技术领域Technical field
本发明涉及通信技术领域，尤其涉及一种QoS流控制方法及通信装置。The present invention relates to the field of communication technology, and in particular, to a QoS flow control method and a communication device.
背景技术Background technique
5G网络中会话管理网元(session management function，SMF)和用户面网元(user plane function，UPF)拓扑增强(enhancing topology of SMF and UPF in 5Gnetworks，ETSUN)场景中，随着终端设备的移动，终端设备与需要访问的服务器距离比较远时，会插入中间用户面网元，而该中间用户面网元不在锚点会话管理网元的服务区域内，锚点会话管理网元的服务区域指的是锚点会话管理网元控制的所有用户面网元的服务区域之和，则会插入用于控制该中间用户面网元的中间会话管理网元。终端设备通过中间用户面网元、该锚点会话管理网元控制的锚点用户面网元与数据网络建立会话进行通信。而服务质量(quality of service，QoS)流是会话中最精细的QoS区分粒度，在现有ETSUN场景中不存在一种完善的机制在ETSUN场景中实现对会话中的QoS流进行分流。In the scenario of enhancing topology of SMF and UPF in 5G networks (ETSUN) of session management function (SMF) and user plane function (UPF) in 5G networks, as the terminal equipment moves, When the terminal device is far away from the server that needs to be accessed, an intermediate user plane network element will be inserted. However, the intermediate user plane network element is not within the service area of the anchor session management network element. The service area of the anchor session management network element refers to is the sum of the service areas of all user plane network elements controlled by the anchor session management network element, then an intermediate session management network element used to control the intermediate user plane network element will be inserted. The terminal device establishes a session with the data network through the intermediate user plane network element and the anchor user plane network element controlled by the anchor session management network element to communicate. Quality of service (QoS) flow is the most refined QoS differentiation granularity in a session. In the existing ETSUN scenario, there is no perfect mechanism to offload the QoS flow in the session.
发明内容Contents of the invention
本申请实施例提供了一种QoS流控制方法及通信装置，可以方便对第一QoS流以及从第一QoS流分流出的第一业务流进行管理，并且能避免锚点会话管理网元分配重复的QoS流标识。Embodiments of the present application provide a QoS flow control method and communication device, which can facilitate the management of the first QoS flow and the first service flow branched from the first QoS flow, and can avoid duplication of anchor session management network element allocation. QoS flow identifier.
第一方面，本申请实施例提供了一种QoS流控制方法，该方法可以适用于通信系统，该通信系统可以包括中间会话管理网元和锚点会话管理网元。其中，该方法可以由通信系统中的中间会话管理网元执行，也可以由中间会话管理网元的部件(例如处理器、芯片、或芯片系统等)执行。该QoS流控制方法可以包括：中间会话管理网元确定将第一QoS流中的第一业务流进行分流，该第一QoS流可以包括至少两个业务流，该至少两个业务流中包括第一业务流。In the first aspect, embodiments of the present application provide a QoS flow control method, which can be applied to a communication system. The communication system can include an intermediate session management network element and an anchor session management network element. The method may be executed by an intermediate session management network element in the communication system, or may be executed by a component of the intermediate session management network element (such as a processor, a chip, or a chip system, etc.). The QoS flow control method may include: the intermediate session management network element determines to offload the first service flow in the first QoS flow. The first QoS flow may include at least two service flows, and the at least two service flows include the first service flow. A business flow.
中间会话管理网元进一步将第一QoS流中分流出的第一业务流绑定到第二QoS流，并为该第二QoS流分配QoS流标识。中间会话管理网元将为该第二QoS流分配的QoS流标识发送给锚点会话管理网元，锚点会话管理网元在后续分配QoS流标识过程中，可以避免分配与该第二QoS流的QoS流标识重复的QoS流标识。The intermediate session management network element further binds the first service flow branched out of the first QoS flow to the second QoS flow, and allocates a QoS flow identifier to the second QoS flow. The intermediate session management network element sends the QoS flow identifier assigned to the second QoS flow to the anchor session management network element. The anchor session management network element can avoid assigning the QoS flow identifier to the second QoS flow in the subsequent process of allocating the QoS flow identifier. The QoS flow ID is a duplicate QoS flow ID.
通过实施第一方面所描述的方法，中间会话管理网元将从第一QoS流中分流出的第一业务流绑定到第二QoS流，并为该第二QoS流分配QoS流标识，可以极大的方便对第一QoS流以及从第一QoS流分流出的第一业务流进行管理，例如，对两个QoS流分别对应的CNPDB进行管理。并且中间会话管理网元将为第二QoS流分配的QoS流标识发送给锚点会话管理网元，也可以避免锚点会话管理网元分配重复的QoS流标识。By implementing the method described in the first aspect, the intermediate session management network element binds the first service flow diverted from the first QoS flow to the second QoS flow, and allocates a QoS flow identifier to the second QoS flow. It is extremely convenient to manage the first QoS flow and the first service flow branched from the first QoS flow, for example, to manage the CNPDB corresponding to the two QoS flows. And the intermediate session management network element sends the QoS flow identifier assigned to the second QoS flow to the anchor session management network element, which can also prevent the anchor session management network element from allocating duplicate QoS flow identifiers.
在第一方面的一种可能的实现方式中，中间会话管理网元可以确定第二QoS流对应的核心网报文延迟预算(Core Network Packet Delay Budget，CN PDB)，并将该第二QoS流对应的CN PDB发送给接入网设备。In a possible implementation of the first aspect, the intermediate session management network element can determine the Core Network Packet Delay Budget (CN PDB) corresponding to the second QoS flow, and assign the second QoS flow to The corresponding CN PDB is sent to the access network device.
具体可选的，中间会话管理网元可以根据第二QoS流对应的第一CN PDB和该第二QoS流对应的第二CN PDB，确定第二QoS流对应的CN PDB。其中，该第二QoS流对应的第一CNPDB可以是该第二QoS流的用户面连接所经过的接入网设备和中间用户面网元之间的CNPDB，该中间用户面网元与该中间会话管理网元相连。示例性的，该中间用户面网元可以是与该接入网设备相连的中间用户面网元。Specifically and optionally, the intermediate session management network element may determine the CN PDB corresponding to the second QoS flow based on the first CN PDB corresponding to the second QoS flow and the second CN PDB corresponding to the second QoS flow. Wherein, the first CNPDB corresponding to the second QoS flow may be the CNPDB between the access network equipment through which the user plane connection of the second QoS flow passes and the intermediate user plane network element, and the intermediate user plane network element and the intermediate user plane network element The session management network element is connected. For example, the intermediate user plane network element may be an intermediate user plane network element connected to the access network device.
该第二QoS流对应的第二CN PDB可以是该第二QoS流的用户面连接所经过的该中间用户面网元与锚点用户面网元之间的CN PDB，该锚点用户面网元可以是该中间会话管理网元为分流出的第一业务流所插入的锚点会话管理网元。该锚点用户面网元与该中间会话管理网元相连，并由该中间会话管理网元控制。The second CN PDB corresponding to the second QoS flow may be the CN PDB between the intermediate user plane network element and the anchor user plane network element through which the user plane connection of the second QoS flow passes. The anchor user plane network element The element may be an anchor session management network element inserted by the intermediate session management network element for the outgoing first service flow. The anchor user plane network element is connected to the intermediate session management network element and is controlled by the intermediate session management network element.
示例性的，接入网设备将第二QoS流对应的CN PDB发送给接入网设备时，可以是将第二QoS流的QoS流标识与该第二QoS流对应的CN PDB之间的对应关系发送给接入网设备。相应的，接入网设备可以根据第二QoS流的5G QoS标识(5G QoS identifier，5QI)，确定第二QoS流对应的报文延迟预算(packet delay budget，PDB)，进一步根据第二QoS流对应的PDB和第二QoS流对应的CN PDB，确定第二QoS流对应的接入网报文延迟预算(accessnetwork packet delay budget，AN PDB)。For example, when the access network device sends the CN PDB corresponding to the second QoS flow to the access network device, it may be a correspondence between the QoS flow identifier of the second QoS flow and the CN PDB corresponding to the second QoS flow. The relationship is sent to the access network device. Correspondingly, the access network device can determine the packet delay budget (PDB) corresponding to the second QoS flow based on the 5G QoS identifier (5QI) of the second QoS flow, and further determine the packet delay budget (PDB) corresponding to the second QoS flow based on the 5G QoS identifier (5QI) of the second QoS flow. The corresponding PDB and the CN PDB corresponding to the second QoS flow determine the access network packet delay budget (AN PDB) corresponding to the second QoS flow.
通过实施该方法，中间会话管理网元可以确定第二QoS流对应CN PDB，并发送给接入网设备，便于接入网设备识别该CN PDB所对应的QoS流，也方便接入网设备确定该第二QoS流对应的AN PDB。By implementing this method, the intermediate session management network element can determine the CN PDB corresponding to the second QoS flow and send it to the access network device, which facilitates the access network device to identify the QoS flow corresponding to the CN PDB, and also facilitates the access network device to determine AN PDB corresponding to the second QoS flow.
在第一方面的一种可能的实现方式中，该中间会话管理网元从锚点会话管理网元接收指示信息，该指示信息可以用于指示中间会话管理网元将第一业务流绑定到第二QoS流；或者，该指示信息可以指示中间会话管理网元将第一业务流进行分流；或者，该指示信息还可以指示中间会话管理网元为第二QoS流分配QoS流标识；或者，该指示信息可以包括第一业务流的业务数据流(service data flow，SDF)标识等等。In a possible implementation of the first aspect, the intermediate session management network element receives indication information from the anchor session management network element, and the indication information can be used to instruct the intermediate session management network element to bind the first service flow to the second QoS flow; or, the indication information can instruct the intermediate session management network element to offload the first service flow; or, the indication information can also instruct the intermediate session management network element to allocate a QoS flow identifier to the second QoS flow; or, The indication information may include a service data flow (SDF) identifier of the first service flow and so on.
通过实施该方法，锚点会话网元可以向中间会话管理网元发送的指示信息，以指示将第一业务流进行分流，而不需要中间会话管理网元进行决策，减轻中间会话管理网元的负载。By implementing this method, the anchor session network element can send instruction information to the intermediate session management network element to instruct the first service flow to be diverted, without the need for the intermediate session management network element to make decisions, thereby alleviating the burden of the intermediate session management network element. load.
第二方面，本申请实施例提供了一种QoS流控制方法，该方法可以适用于通信系统，该通信系统可以包括中间会话管理网元和锚点会话管理网元。其中，该方法可以由第一会话管理网元执行，也可以由第一会话管理网元的部件(例如处理器、芯片、或芯片系统等)执行。该第一会话管理网元可以是通信系统中的中间会话管理网元或者锚点会话管理网元。其中，该QoS流控制方法可以包括：第一会话管理网元获取QoS流对应的第一CN PDB，该第一CN PDB可以为接入网设备与中间用户面网元之间的CN PDB，其中，中间会话管理网元与中间用户面网元相连。可选的，该中间用户面网元可以是与接入网设备相连的中间用户面网元。In the second aspect, embodiments of the present application provide a QoS flow control method, which can be applied to a communication system. The communication system can include an intermediate session management network element and an anchor session management network element. The method may be executed by the first session management network element, or may be executed by a component of the first session management network element (such as a processor, a chip, or a chip system, etc.). The first session management network element may be an intermediate session management network element or an anchor session management network element in the communication system. Wherein, the QoS flow control method may include: the first session management network element obtains the first CN PDB corresponding to the QoS flow, and the first CN PDB may be the CN PDB between the access network device and the intermediate user plane network element, where , the intermediate session management network element is connected to the intermediate user plane network element. Optionally, the intermediate user plane network element may be an intermediate user plane network element connected to the access network device.
该第一会话管理网元获取QoS流对应的第二CN PDB，该第二CN PDB为该中间用户面网元与锚点用户面网元之间的CN PDB。其中，锚点会话管理网元与该锚点用户面网元相连。The first session management network element obtains the second CN PDB corresponding to the QoS flow, and the second CN PDB is the CN PDB between the intermediate user plane network element and the anchor user plane network element. Among them, the anchor session management network element is connected to the anchor user plane network element.
上述接入网设备、中间用户面网元以及锚点用户面网元可以是QoS流的用户面连接所经过的网元。The above-mentioned access network equipment, intermediate user plane network elements and anchor user plane network elements may be network elements through which the user plane connection of the QoS flow passes.
进一步，第一会话管理网元根据QoS流对应的第一CN PDB和QoS流对应的第二CNPDB，确定QoS流对应的CN PDB。Further, the first session management network element determines the CN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow and the second CNPDB corresponding to the QoS flow.
其中，当第一会话管理网元为锚点会话管理网元时，该第一会话管理网元获取QoS流对应的第一CN PDB包括：该第一会话管理网元从中间会话管理网元接收QoS流对应的第一CN PDB。或者，当第一会话管理网元为中间会话管理网元时，该第一会话管理网元获取QoS流对应的第二CN PDB包括：该第一会话管理网元从锚点会话管理网元接收QoS流对应的第二CN PDB。Wherein, when the first session management network element is an anchor session management network element, the first session management network element obtaining the first CN PDB corresponding to the QoS flow includes: the first session management network element receives from the intermediate session management network element The first CN PDB corresponding to the QoS flow. Or, when the first session management network element is an intermediate session management network element, the first session management network element obtaining the second CN PDB corresponding to the QoS flow includes: the first session management network element receives from the anchor session management network element The second CN PDB corresponding to the QoS flow.
通过实施第二方面所描述的方法，可以实现在ETSUN场景下由中间会话管理网元或锚点会话管理网元确定QoS流对应的CN PDB。By implementing the method described in the second aspect, it is possible to determine the CN PDB corresponding to the QoS flow by the intermediate session management network element or the anchor session management network element in the ETSUN scenario.
在第二方面的一种可能的实现方式中，第一会话管理网元还可以向接入网设备发送QoS流对应的CN PDB。相应的，接入网设备可以根据QoS流的5QI，确定QoS流对应的PDB，进一步根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。In a possible implementation manner of the second aspect, the first session management network element may also send the CN PDB corresponding to the QoS flow to the access network device. Correspondingly, the access network device can determine the PDB corresponding to the QoS flow based on the 5QI of the QoS flow, and further determine the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow.
通过实施该方法，可以方便接入网设备准确确定QoS流对应的AN PDB。By implementing this method, the access network device can conveniently determine the AN PDB corresponding to the QoS flow.
在第二方面的一种可能的实现方式中，QoS流对应的CN PDB等于QoS流对应的第一CN PDB与QoS流对应的第二CN PDB的和。In a possible implementation manner of the second aspect, the CN PDB corresponding to the QoS flow is equal to the sum of the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow.
在第二方面的一种可能的实现方式中，第一会话管理网元为锚点会话管理网元，该锚点会话管理网元从中间会话管理网元接收QoS流对应的第一CN PDB的方式可以是，该锚点会话管理网元可以从中间会话管理网元接收第一消息，该第一消息可以包括QoS流对应的第一CN PDB。In a possible implementation of the second aspect, the first session management network element is an anchor session management network element, and the anchor session management network element receives the first CN PDB corresponding to the QoS flow from the intermediate session management network element. The method may be that the anchor session management network element may receive a first message from an intermediate session management network element, and the first message may include the first CN PDB corresponding to the QoS flow.
可选的，中间会话管理网元可以在会话修改流程、或Xn或N2切换流程或服务请求流程通过第一消息，将QoS流对应的第一CN PDB发送给锚点会话管理网元。示例性的，该第一消息可以是会话更新请求消息。Optionally, the intermediate session management network element may send the first CN PDB corresponding to the QoS flow to the anchor session management network element through the first message during the session modification process, or the Xn or N2 handover process or the service request process. For example, the first message may be a session update request message.
通过实施该方法，中间会话管理网元可以在诸如会话修改流程、或Xn或N2切换流程或服务请求流程，将QoS流对应的第一CN PDB发送给锚点会话管理网元，并由锚点会话管理网元确定QoS流对应的CN PDB。从而实现在ETSUN场景下快速由锚点会话管理网元确定QoS流对应的CN PDB，提高CN PDB确定效率。By implementing this method, the intermediate session management network element can send the first CN PDB corresponding to the QoS flow to the anchor session management network element during, for example, the session modification process, or the Xn or N2 handover process or the service request process, and the anchor session management network element will The session management network element determines the CN PDB corresponding to the QoS flow. This enables the anchor session management network element to quickly determine the CN PDB corresponding to the QoS flow in the ETSUN scenario, improving the efficiency of CN PDB determination.
在第二方面的一种可能的实现方式中，第一会话管理网元为锚点会话管理网元，该锚点会话管理网元从中间会话管理网元接收QoS流对应的第一CN PDB的方式可以是，该锚点会话管理网元可以从中间会话管理网元接收第二消息，该第二消息包括与第一拓扑关联的至少一个5G QoS标识5QI与至少一个第一CN PDB之间的对应关系，可选的，该对应关系可以是以列表的形式下发，一个5QI对应一个第一CN PDB。该第一拓扑包括QoS流的用户面连接所经过的接入网设备和中间用户面网元之间的拓扑组合。该中间用户面网元可以是与接入网设备相连的中间用户面网元。In a possible implementation of the second aspect, the first session management network element is an anchor session management network element, and the anchor session management network element receives the first CN PDB corresponding to the QoS flow from the intermediate session management network element. The method may be that the anchor session management network element may receive a second message from the intermediate session management network element. The second message includes a link between at least one 5G QoS identifier 5QI associated with the first topology and at least one first CN PDB. Correspondence, optionally, the correspondence can be issued in the form of a list, one 5QI corresponds to one first CN PDB. The first topology includes a topological combination between access network equipment and intermediate user plane network elements through which the user plane connection of the QoS flow passes. The intermediate user plane network element may be an intermediate user plane network element connected to the access network device.
可选的，中间会话管理网元可以是在会话建立流程中通过第二消息将上述对应关系发送给锚点会话管理网元。示例性的，该第二消息可以是会话创建请求消息。Optionally, the intermediate session management network element may send the above corresponding relationship to the anchor session management network element through a second message during the session establishment process. For example, the second message may be a session creation request message.
锚点会话管理网元可以根据QoS流的5QI和对应关系，确定QoS流对应的第一CNPDB。例如，该锚点会话管理网元从对应关系中选择与QoS流的5QI对应的第一CN PDB作为QoS流对应的第一CN PDB。The anchor session management network element can determine the first CNPDB corresponding to the QoS flow based on the 5QI of the QoS flow and the corresponding relationship. For example, the anchor session management network element selects the first CN PDB corresponding to the 5QI of the QoS flow from the corresponding relationship as the first CN PDB corresponding to the QoS flow.
通过实施该方法，可以实现在诸如会话建立流程中由锚点会话管理网元确定QoS流对应的CN PDB。By implementing this method, the anchor session management network element can determine the CN PDB corresponding to the QoS flow in processes such as session establishment.
在第二方面的一种可能的实现方式中，第一会话管理网元为中间会话管理网元，该中间会话管理网元从锚点会话管理网元接收QoS流对应的第二CN PDB的方式可以是，该中间会话管理网元从锚点会话管理网元接收第三消息，该第三消息包括QoS流对应的第二CN PDB。In a possible implementation manner of the second aspect, the first session management network element is an intermediate session management network element, and the intermediate session management network element receives the second CN PDB corresponding to the QoS flow from the anchor session management network element. It may be that the intermediate session management network element receives a third message from the anchor session management network element, where the third message includes the second CN PDB corresponding to the QoS flow.
可选的，锚点会话管理网元可以在会话建立流程、或者会话修改流程、或Xn或N2切换流程或服务请求流程通过第三消息，将QoS流对应的第二CN PDB发送给中间会话管理网元。示例性的，如果锚点会话管理网元是在会话建立流程将QoS流对应的第二CN PDB发送给中间会话管理网元，则该第三消息可以是会话创建响应消息。如果锚点会话管理网元是在其他流程将QoS流对应的第二CN PDB发送给中间会话管理网元，则该第三消息可以是会话更新响应消息。Optionally, the anchor session management network element may send the second CN PDB corresponding to the QoS flow to the intermediate session management through a third message during the session establishment process, session modification process, Xn or N2 switching process or service request process. network element. For example, if the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element during the session establishment process, the third message may be a session creation response message. If the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element in other processes, the third message may be a session update response message.
通过实施该方法，锚点会话管理网元可以在诸如会话创建流程、或会话修改流程、或Xn或N2切换流程或服务请求流程，将QoS流对应的第二CN PDB发送给中间会话管理网元，并由中间会话管理网元确定QoS流对应的CN PDB。从而实现在ETSUN场景下快速由中间会话管理网元确定QoS流对应的CN PDB，提高CN PDB确定效率。By implementing this method, the anchor session management network element can send the second CN PDB corresponding to the QoS flow to the intermediate session management network element during, for example, the session creation process, or session modification process, or Xn or N2 switching process, or service request process. , and the intermediate session management network element determines the CN PDB corresponding to the QoS flow. This enables the intermediate session management network element to quickly determine the CN PDB corresponding to the QoS flow in the ETSUN scenario, improving the efficiency of CN PDB determination.
第三方面，本申请实施例提供了一种QoS流控制方法，该方法可以适用于通信系统，该通信系统可以包括接入网设备、中间会话管理网元和锚点会话管理网元。其中，该方法可以由接入网设备执行，也可以由接入网设备的部件(例如处理器、芯片、或芯片系统等)执行。其中，该QoS流控制方法可以包括：接入网设备从中间会话管理网元接收QoS流对应的第一CN PDB，从锚点会话管理网元接收QoS流对应的第二CN PDB，其中，第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB。中间会话管理网元与中间用户面网元相连，锚点会话管理网元与锚点用户面网元相连。In the third aspect, embodiments of the present application provide a QoS flow control method, which can be applied to a communication system. The communication system can include an access network device, an intermediate session management network element, and an anchor session management network element. The method may be executed by the access network device, or may be executed by a component of the access network device (such as a processor, a chip, or a chip system, etc.). Wherein, the QoS flow control method may include: the access network device receives the first CN PDB corresponding to the QoS flow from the intermediate session management network element, and receives the second CN PDB corresponding to the QoS flow from the anchor session management network element, wherein the One CN PDB is a CN PDB between the access network equipment and the intermediate user plane network element, and the second CN PDB is a CN PDB between the intermediate user plane network element and the anchor user plane network element. The intermediate session management network element is connected to the intermediate user plane network element, and the anchor session management network element is connected to the anchor user plane network element.
示例性的，锚点会话管理网元确定QoS流对应的第一CN PDB，并将QoS流对应的第二CN PDB发送给中间会话管理网元，例如，锚点会话管理网元可以通过会话创建响应消息或者会话更新响应消息将QoS流对应的第二CN PDB发送给中间会话管理网元。进一步，中间会话管理网元确定QoS流对应的第二CN PDB，并将QoS流对应的第二CN PDB和从锚点会话管理网元接收的QoS流对应的第一CN PDB发送给接入网设备。Exemplarily, the anchor session management network element determines the first CN PDB corresponding to the QoS flow, and sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element. For example, the anchor session management network element can create a session through the session The response message or session update response message sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element. Further, the intermediate session management network element determines the second CN PDB corresponding to the QoS flow, and sends the second CN PDB corresponding to the QoS flow and the first CN PDB corresponding to the QoS flow received from the anchor session management network element to the access network. equipment.
接入网设备可以根据QoS流的5QI，确定QoS流对应的PDB；进一步，接入网设备根据QoS流对应的第一CN PDB、QoS流对应的第二CN PDB和QoS流对应的PDB，确定QoS流对应的ANPDB。The access network device can determine the PDB corresponding to the QoS flow based on the 5QI of the QoS flow; further, the access network device determines the PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow, the second CN PDB corresponding to the QoS flow, and the PDB corresponding to the QoS flow. ANPDB corresponding to the QoS flow.
通过实施第三方面所描述的方法，中间会话管理网元将QoS流对应的第一CN PDB发送给接入网设备，锚点会话管理网元将QoS流对应的第二CN PDB发送给接入网设备，从而使得接入网设备精准确定QoS流对应的AN PDB。By implementing the method described in the third aspect, the intermediate session management network element sends the first CN PDB corresponding to the QoS flow to the access network device, and the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the access network device. network equipment, thereby allowing the access network equipment to accurately determine the AN PDB corresponding to the QoS flow.
在第三方面的一种可能的实现方式中，QoS流对应的AN PDB等于QoS流对应的PDB减去QoS流对应的第一CN PDB，并减去QoS流对应的第二CN PDB得到的值。In a possible implementation of the third aspect, the AN PDB corresponding to the QoS flow is equal to the value obtained by subtracting the first CN PDB corresponding to the QoS flow from the PDB corresponding to the QoS flow and subtracting the second CN PDB corresponding to the QoS flow. .
第四方面，本申请实施例提供了一种通信装置，包括用于执行第一方面至第三方面任一方面的方法的各个模块或单元。In a fourth aspect, embodiments of the present application provide a communication device, including various modules or units for executing the method of any one of the first to third aspects.
第五方面，本申请实施例提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面至第三方面任一方面的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。In a fifth aspect, embodiments of the present application provide a communication device, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the method of any one of the above-mentioned first to third aspects. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.
第六方面，本申请实施例提供了一种处理器，包括：输入电路、输出电路和处理电路。所述处理电路用于通过所述输入电路接收信号，并通过所述输出电路发射信号，使得所述处理器执行第一方面至第三方面任一方面的方法。In a sixth aspect, embodiments of the present application provide a processor, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method of any one of the first to third aspects.
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。In the specific implementation process, the above-mentioned processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. . The input signal received by the input circuit may be received and input by, for example, but not limited to, the receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output A circuit may be the same circuit that functions as an input circuit and an output circuit at different times. The embodiments of this application do not limit the specific implementation methods of the processor and various circuits.
第七方面，本申请实施例提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面至第三方面任一方面的方法。In a seventh aspect, embodiments of the present application provide a processing device, including a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the method of any one of the first to third aspects.
可选地，所述处理器为一个或多个，所述存储器为一个或多个。Optionally, there are one or more processors and one or more memories.
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。Alternatively, the memory may be integrated with the processor, or the memory may be provided separately from the processor.
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated on the same chip as the processor, or can be set in different On the chip, the embodiment of the present application does not limit the type of memory and the arrangement of the memory and the processor.
应理解，相关的数据交互过程例如发送CN PDB可以为从处理器输出CN PDB的过程，接收CN PDB可以为处理器接收CN PDB的过程。具体地，处理器输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。It should be understood that the relevant data interaction process, for example, sending the CN PDB may be a process of outputting the CN PDB from the processor, and receiving the CN PDB may be a process of the processor receiving the CN PDB. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can be from the receiver. Among them, the transmitter and receiver can be collectively called a transceiver.
上述第七方面中的处理装置可以是一个或多个芯片。该处理装置中的处理器可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。The processing device in the above seventh aspect may be one or more chips. The processor in the processing device can be implemented by hardware or software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general processor, which is implemented by reading software codes stored in a memory, and the memory can Integrated in the processor, it can be located outside the processor and exist independently.
第八方面，本申请实施例提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面至第三方面任一方面的方法。In an eighth aspect, embodiments of the present application provide a computer program product. The computer program product includes: a computer program (which may also be called a code, or an instruction). When the computer program is run, it causes the computer to execute the above-mentioned first aspect. Any method from the first aspect to the third aspect.
第九方面，本申请实施例提供了一种可读存储介质，所述可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得上述第一方面至第三方面任一方面的方法被实现。In a ninth aspect, embodiments of the present application provide a readable storage medium that stores a computer program (which may also be called code, or instructions) that when run on a computer causes the above-mentioned first aspect The method of any aspect to the third aspect is implemented.
第十方面，本申请实施例提供了一种通信系统，包括前述中间会话管理网元和锚点会话管理网元。In a tenth aspect, embodiments of the present application provide a communication system, including the aforementioned intermediate session management network element and the anchor session management network element.
可选的，该通信系统还可以包括接入网设备。Optionally, the communication system may also include access network equipment.
第十一方面，提供了一种芯片系统，该芯片系统包括处理器和接口电路，处理器用于从存储器中调用并运行存储器中存储的计算机程序(也可以称为代码，或指令)，以实现第一方面至第三方面任一方面所涉及的功能，在一种可能的设计中，该芯片系统还包括存储器，存储器用于保存必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。In an eleventh aspect, a chip system is provided. The chip system includes a processor and an interface circuit. The processor is used to call and run the computer program (also called code, or instructions) stored in the memory from the memory to implement For the functions involved in any one of the first to third aspects, in a possible design, the chip system also includes a memory, and the memory is used to save necessary program instructions and data. The chip system may be composed of chips, or may include chips and other discrete devices.
附图说明Description of drawings
图1是本申请提供的一种ETSUN场景下的5G系统架构图；Figure 1 is a 5G system architecture diagram in an ETSUN scenario provided by this application;
图2a至图2b是本申请实施例适用的网络架构图；Figures 2a to 2b are network architecture diagrams applicable to the embodiments of this application;
图3是本申请提供的一种QoS流控制方法的流程示意图；Figure 3 is a schematic flow chart of a QoS flow control method provided by this application;
图4是本申请提供的一种QoS流控制方法的具体示例的示意性流程图；Figure 4 is a schematic flow chart of a specific example of a QoS flow control method provided by this application;
图5是本申请提供的一种QoS流控制方法的流程示意图；Figure 5 is a schematic flow chart of a QoS flow control method provided by this application;
图6是本申请提供的一种QoS流控制方法的具体示例的示意性流程图；Figure 6 is a schematic flow chart of a specific example of a QoS flow control method provided by this application;
图7是本申请提供的一种QoS流控制方法的流程示意图；Figure 7 is a schematic flow chart of a QoS flow control method provided by this application;
图8是本申请提供的一种QoS流控制方法的具体示例的示意性流程图；Figure 8 is a schematic flow chart of a specific example of a QoS flow control method provided by this application;
图9是本申请提供的一种QoS流控制方法的流程示意图；Figure 9 is a schematic flow chart of a QoS flow control method provided by this application;
图10是本申请提供的一种QoS流控制方法的具体示例的示意性流程图；Figure 10 is a schematic flow chart of a specific example of a QoS flow control method provided by this application;
图11是本申请实施例提供的通信装置的示意性框图；Figure 11 is a schematic block diagram of a communication device provided by an embodiment of the present application;
图12是本申请实施例提供的另一通信装置的示意性框图；Figure 12 is a schematic block diagram of another communication device provided by an embodiment of the present application;
图13是本申请实施例提供的一种芯片的结构示意图。Figure 13 is a schematic structural diagram of a chip provided by an embodiment of the present application.
具体实施方式Detailed ways
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long termevolution，LTE)系统、通用移动通信系统(universal mobile telecommunicationsystem，UMTS)、第五代(5th generation，5G)系统、新无线(new radio，NR)以及随着技术的发展出现的其他新的系统等。The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, universal mobile telecommunication system (UMTS), fifth generation (5th generation, 5G) system, New radio (NR) and other new systems emerging with the development of technology.
图1示出了一种可以应用于本申请的ETSUN场景下的5G系统的示意图。如图1所示，该系统可以分为接入网和核心网两部分。接入网用于实现无线接入有关的功能，主要包括接入网络(access network，AN)设备，接入网络设备可以为无线接入网络(radio accessnetwork，RAN)设备以及其它通过空口接入的设备(比如WiFi)。核心网主要包括以下几个关键逻辑网元：用户面功能(user plane function，UPF)、中间用户面功能(IntermediateUPF，I-UPF)、接入及移动管理功能(access and mobility management function，AMF)、会话管理功能(session management function，SMF)、中间会话管理功能(IntermediateSMF，I-SMF)、策略控制功能(policy control function，PCF)、统一数据管理功能(unifieddata management，UDM)。该系统还可以包括用户设备(user equipment，UE)、数据网络(data network，DN)和应用功能(application function，AF)。各网元之间的接口如图1中所示。应理解，网元之间还可以采用服务化接口进行通信。Figure 1 shows a schematic diagram of a 5G system in the ETSUN scenario that can be applied to this application. As shown in Figure 1, the system can be divided into two parts: the access network and the core network. The access network is used to implement functions related to wireless access, and mainly includes access network (AN) equipment. The access network equipment can be a wireless access network (RAN) equipment and other devices accessed through the air interface. Device (such as WiFi). The core network mainly includes the following key logical network elements: user plane function (UPF), intermediate user plane function (IntermediateUPF, I-UPF), access and mobility management function (AMF) , session management function (SMF), intermediate session management function (IntermediateSMF, I-SMF), policy control function (PCF), unified data management function (UDM). The system may also include user equipment (UE), data network (DN), and application function (AF). The interfaces between each network element are shown in Figure 1. It should be understood that service-oriented interfaces can also be used for communication between network elements.
可以理解的是，该系统架构中可以包括至少一个I-UPF，以及至少一个I-SMF，图中以包括一个I-UPF和一个I-SMF作为举例说明。It can be understood that the system architecture may include at least one I-UPF and at least one I-SMF. The figure includes one I-UPF and one I-SMF as an example.
UE，也可以称为终端设备。终端设备可以经AN设备与一个或多个核心网(corenetwork，CN)进行通信。终端设备可称为接入终端、终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线网络设备、用户代理或用户装置。终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless localloop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它设备、车载设备、可穿戴设备或物联网、车辆网中的终端设备以及未来网络中的任意形态的终端设备等。UE can also be called terminal equipment. The terminal device can communicate with one or more core networks (corenetwork, CN) via the AN device. A terminal device may be referred to as an access terminal, terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless network equipment, user agent or user device. The terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities Devices, computing devices or other devices connected to wireless modems, in-vehicle devices, wearable devices or the Internet of Things, terminal devices in vehicle networks, and any form of terminal devices in future networks, etc.
AN设备，是一种将终端设备接入到无线网络的设备，具体可以为基站。基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等。具体可以为：无线局域网(wireless local area network，WLAN)中的接入点(access point，AP)，全球移动通信系统(global system for mobile communications，GSM)或码分多址接入(codedivision multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolved Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及5G系统中的下一代节点B(the next generation Node B，gNB)或者未来演进的公用陆地移动网(public land mobile network，PLMN)网络中的基站等。AN equipment is a device that connects terminal equipment to a wireless network. Specifically, it can be a base station. Base stations can include various forms of base stations, such as macro base stations, micro base stations (also called small stations), relay stations, access points, etc. Specifically, it can be: an access point (AP) in a wireless local area network (WLAN), a global system for mobile communications (GSM) or a code division multiple access (codedivision multiple access) , a base transceiver station (BTS) in CDMA), a base station (NodeB, NB) in wideband code division multiple access (WCDMA), or an evolved base station (NB) in LTE Evolved Node B (eNB or eNodeB), or relay station or access point, or vehicle-mounted equipment, wearable devices, and the next generation Node B (gNB) in the 5G system or future evolved public land mobile network ( Base stations in public land mobile network (PLMN) networks, etc.
UDM，具备管理用户的签约数据，生成用户的认证信息等功能。UDM has functions such as managing user contract data and generating user authentication information.
AMF，主要负责UE的注册管理、UE的连接管理、UE的可达性管理、UE的接入授权和接入鉴权、UE的安全功能，UE的移动性管理，网络切片(network slice)选择，SMF选择等功能。AMF作为N1/N2接口信令连接的锚点并为SMF提供N1/N2接口会话管理(sessionmanagement，SM)消息的路由，维护和管理UE的状态信息。AMF是5G系统中的一种移动管理网元。AMF is mainly responsible for UE registration management, UE connection management, UE reachability management, UE access authorization and access authentication, UE security functions, UE mobility management, and network slice selection. , SMF selection and other functions. AMF serves as the anchor point of the N1/N2 interface signaling connection and provides SMF with routing of N1/N2 interface session management (SM) messages, maintaining and managing the status information of the UE. AMF is a mobile management network element in the 5G system.
SMF，主要负责UE会话管理的所有控制面功能，包括UPF的选择与控制，网络互连协议(internet protocol，IP)地址分配及管理，会话的服务质量(quality of service，QoS)管理，从PCF获取策略与计费控制(policy and charging control，PCC)策略等。SMF还作为非接入层(non-access stratum，NAS)消息中SM部分的终结点。SMF is mainly responsible for all control plane functions of UE session management, including UPF selection and control, Internet protocol (IP) address allocation and management, session quality of service (QoS) management, from PCF Obtain policy and charging control (PCC) policies, etc. SMF also serves as the termination point for the SM part of non-access stratum (NAS) messages.
I-SMF，主要负责I-UPF的选择与控制等功能。I-SMF is mainly responsible for the selection and control of I-UPF.
PCF，具备向控制面功能实体提供策略规则等功能。PCF has functions such as providing policy rules to control plane functional entities.
AF，可以是应用服务器，其可以属于运营商，也可以属于第三方。AF can be an application server, which can belong to the operator or a third party.
UPF，主要负责对用户报文进行处理，如转发、计费等，可以作为协议数据单元(protocol data unit，PDU)会话(session)连接的锚定点，即PDU会话锚点(PDU sessionanchor，PSA)，负责对UE的数据报文过滤、数据传输/转发、速率控制、生成计费信息、用户面QoS处理、上行传输认证、传输等级验证、下行数据包缓存及下行数据通知触发等。UPF还可以作为多宿主(multi-homed)PDU会话的分支点。UPF is mainly responsible for processing user messages, such as forwarding, accounting, etc., and can be used as the anchor point for protocol data unit (PDU) session (session) connection, that is, PDU session anchor (PDU session anchor, PSA) , responsible for UE data packet filtering, data transmission/forwarding, rate control, generation of accounting information, user plane QoS processing, uplink transmission authentication, transmission level verification, downlink data packet caching and downlink data notification triggering, etc. UPF can also serve as a branch point for multi-homed PDU sessions.
I-UPF，主要负责报文的中间转发。I-UPF is mainly responsible for the intermediate forwarding of messages.
DN，为用户提供数据传输服务的网络，例如，IP多媒体业务(IP Multi-mediaservice,IMS)、互联网等。DN中可以包括应用服务器(application server，AS)，AS是一种软件框架，提供一个应用程序运行的环境，用于为应用程序提供安全、数据、事务支持、负载平衡大型分布式系统管理等服务。UE通过与AS通信获取应用报文。需要说明的是，上述AF为AS的控制面。DN is a network that provides data transmission services to users, such as IP Multi-media Service (IMS), Internet, etc. DN can include application server (AS). AS is a software framework that provides an environment for application running and is used to provide security, data, transaction support, load balancing, large distributed system management and other services for applications. . The UE obtains the application message by communicating with the AS. It should be noted that the above-mentioned AF is the control surface of the AS.
应理解，本申请实施例并不限定只应用于图1所示的系统架构中。例如，可以应用本申请实施例的会话管理方法的通信系统中可以包括更多或更少的网元或设备。图1中的设备或网元可以是硬件，也可以是从功能上划分的软件或者以上二者的结合。图1中的设备或网元之间可以通过其他设备或网元通信。It should be understood that the embodiments of the present application are not limited to be applied only to the system architecture shown in FIG. 1 . For example, the communication system to which the session management method of the embodiment of the present application may be applied may include more or fewer network elements or devices. The equipment or network elements in Figure 1 can be hardware, functionally divided software, or a combination of the above two. The devices or network elements in Figure 1 can communicate with each other through other devices or network elements.
如图2a，为适用于本申请的一种简化的系统架构图，如图所示，该系统架构包括终端设备、接入网设备、中间用户面网元、锚点用户面网元、数据网络、接入及移动管理设备、中间会话管理网元、锚点会话管理网元。其中，本申请实施例的中间用户面网元可以是指与接入网设备相连的用户面网元，该中间用户面网元与中间会话管理网元相连，并由该中间会话管理网元控制。本申请实施例的锚点用户面网元可以是指与数据网络相连的用户面网元，该锚点用户面网元与锚点会话管理网元相连，并由该锚点会话管理网元控制。可以理解的是，接入网设备与锚点用户面网元之间可以存在一个或多个中间用户面网元，本申请实施例不作限定。Figure 2a is a simplified system architecture diagram suitable for this application. As shown in the figure, the system architecture includes terminal equipment, access network equipment, intermediate user plane network elements, anchor user plane network elements, and data networks. , access and mobility management equipment, intermediate session management network elements, and anchor session management network elements. Among them, the intermediate user plane network element in the embodiment of the present application may refer to the user plane network element connected to the access network device. The intermediate user plane network element is connected to the intermediate session management network element and is controlled by the intermediate session management network element. . The anchor user plane network element in the embodiment of this application may refer to the user plane network element connected to the data network. The anchor user plane network element is connected to the anchor session management network element and is controlled by the anchor session management network element. . It can be understood that one or more intermediate user plane network elements may exist between the access network device and the anchor user plane network element, which is not limited in the embodiments of this application.
本申请实施例中的第一CN PDB可以是指接入网设备与中间用户面网元之间的CNPDB，第二CN PDB可以是指该中间用户面网元与锚点用户面网元之间的CN PDB。The first CN PDB in the embodiment of this application may refer to the CNPDB between the access network device and the intermediate user plane network element, and the second CN PDB may refer to the CNPDB between the intermediate user plane network element and the anchor user plane network element. CN PDB.
可选的，在图2a中，接入网设备可以是图1中的RAN，中间用户面网元可以是图1中与RAN连接的I-UPF，中间会话管理网元可以是图1中的I-SMF，该I-UPF由I-SMF控制。锚点用户面网元可以是图1中与SMF连接的UPF，锚点会话管理网元可以是图1中的SMF，该UPF由SMF控制。相应的，该第一CN PDB可以是指RAN与I-UPF之间的N3 CN PDB，该第二CN PDB可以是指I-UPF与UPF之间的N9 CN PDB。Optionally, in Figure 2a, the access network device may be the RAN in Figure 1, the intermediate user plane network element may be the I-UPF connected to the RAN in Figure 1, and the intermediate session management network element may be the I-SMF, this I-UPF is controlled by I-SMF. The anchor user plane network element may be the UPF connected to the SMF in Figure 1, and the anchor session management network element may be the SMF in Figure 1. The UPF is controlled by the SMF. Correspondingly, the first CN PDB may refer to the N3 CN PDB between the RAN and the I-UPF, and the second CN PDB may refer to the N9 CN PDB between the I-UPF and the UPF.
在图2a中，会话中QoS流的用户面连接所经过的网元可以是路径1所经过的网元，在一些可选的场景中，可以通过分流的方式，将QoS流中的一个或多个业务流分流到本地路由。如图2b所示，中间会话管理网元决定插入本地会话锚点用户面网元(Local PDUsession anchor UPF，Local PSAUPF)作为另一个锚点用户面网元，为方便描述，后续实施例将其简称为L-UPF。中间会话管理网元插入分流点以实现将QoS流中的一个或多个业务流分流发送到本地会话锚点用户面网元。分流场景下，终端设备的同一个会话具有多个不同的锚点用户面网元，如图2b所示，同一个会话具有锚点用户面网元1和锚点用户面网元2。同一个会话不同业务流的报文，可以分发到不同的锚点用户面网元。如图2b所示，同一个会话不同业务流的报文可以分别通过路径1发送到锚点用户面网元1，通过路径2发送到锚点用户面网元2。In Figure 2a, the network element through which the user plane connection of the QoS flow in the session passes can be the network element through which path 1 passes. In some optional scenarios, one or more QoS flows can be diverted through offloading. Service flows are diverted to local routes. As shown in Figure 2b, the intermediate session management network element decides to insert the local session anchor user plane network element (Local PDUsession anchor UPF, Local PSAUPF) as another anchor user plane network element. For convenience of description, subsequent embodiments will abbreviate it for L-UPF. The intermediate session management network element is inserted into the offloading point to implement offloading and sending of one or more service flows in the QoS flow to the local session anchor user plane network element. In the offload scenario, the same session of the terminal device has multiple different anchor user plane network elements. As shown in Figure 2b, the same session has anchor user plane network element 1 and anchor user plane network element 2. Packets of different service flows in the same session can be distributed to different anchor user plane network elements. As shown in Figure 2b, packets of different service flows in the same session can be sent to anchor user plane network element 1 through path 1, and to anchor user plane network element 2 through path 2.
其中，该分流点可以有两种实现方式：(1)分支点(branching point，BP)方式，即在用户面路径1上插入BP实现；(2)上行分类器(uplink classifier，ULCL)方式，即在用户面路径1上插入ULCL实现。可以理解的是，该分流点可以是QoS流的用户面连接所经过的中间用户面网元，或者也可以是中间会话管理网元重新选择的一个新的中间用户面网元。Among them, the branching point can be implemented in two ways: (1) branching point (BP) method, that is, inserting BP implementation on user plane path 1; (2) uplink classifier (ULCL) method, That is, insert the ULCL implementation on user plane path 1. It can be understood that the offloading point may be an intermediate user plane network element through which the user plane connection of the QoS flow passes, or it may be a new intermediate user plane network element reselected by the intermediate session management network element.
终端设备的会话具有多个锚点用户面网元，对于上行业务流(uplink，UL)，分流点按照转发规则将接收到的UL业务流发送到不同的锚点用户面网元；对于下行业务流(downlink，DL)，分流点按照转发规则将DL业务流发送至UE。The session of the terminal device has multiple anchor user plane network elements. For the uplink service flow (uplink, UL), the distribution point sends the received UL service flow to different anchor user plane network elements according to the forwarding rules; for the downlink service Flow (downlink, DL), the offloading point sends the DL service flow to the UE according to the forwarding rules.
在详细介绍本申请的方法之前，首先对本申请涉及的一些概念作简单介绍。Before introducing the method of this application in detail, some concepts involved in this application will be briefly introduced.
1、QoS流(例如：QoS Flow)1. QoS flow (for example: QoS Flow)
一个PDU会话可以包括一个或多个QoS流。在5G系统中一个QoS流标识(QoS flowidentity，QFI)用于标识一条QoS流；PDU会话中具有相同QFI的用户面数据会获得相同的转发处理(如相同的调度、相同的准入门限等)。A PDU session can include one or more QoS flows. In the 5G system, a QoS flow identity (QFI) is used to identify a QoS flow; user plane data with the same QFI in the PDU session will receive the same forwarding processing (such as the same scheduling, the same admission threshold, etc.) .
QoS流可以是被SMF控制的，其可以是预配置或通过PDU会话建立或修改流程来建立。SMF可以将QoS流的QoS规则(例如：QoS rule)发送给UE，QoS规则包含QFI、报文过滤集(packet filter set)等，UE可以根据QoS规则对上行业务流进行分类和标记，即终端设备可以根据QoS规则将上行数据关联到对应的QoS流去。QoS flows may be SMF controlled, which may be pre-configured or established through PDU session establishment or modification procedures. SMF can send the QoS rules (for example: QoS rule) of the QoS flow to the UE. The QoS rules include QFI, packet filter set (packet filter set), etc. The UE can classify and mark the upstream service flow according to the QoS rules, that is, the terminal The device can associate upstream data to the corresponding QoS flow according to QoS rules.
SMF可以将QoS流的QoS文档(例如：QoS profile)发送至RAN，QoS文档包含5QI、分配保持优先级(allocation and retention priority，ARP)、保证流比特率(guaranteedflow bit rate，GFBR)、最大流比特率(maximum flow bit rate，MFBR)等。一个QoS文档与一个QFI对应。RAN可以根据QoS文档对业务流进行控制。SMF can send the QoS document (for example: QoS profile) of the QoS flow to the RAN. The QoS document contains 5QI, allocation and retention priority (allocation and retention priority, ARP), guaranteed flow bit rate (guaranteedflow bit rate, GFBR), maximum flow Bit rate (maximum flow bit rate, MFBR), etc. A QoS document corresponds to a QFI. RAN can control service flows based on QoS documents.
其中，QoS流的资源类型可以分为如下几种：保证比特率(guaranteed bit rate，GBR)QoS流、时延关键型GBR(例如：delay-critical GBR)QoS流以及非保证比特率Non-GBRQoS流。Among them, the resource types of QoS flows can be divided into the following types: guaranteed bit rate (GBR) QoS flow, delay-critical GBR (for example: delay-critical GBR) QoS flow, and non-guaranteed bit rate Non-GBR QoS flow.
2、5G QoS标识(5G QoS identifier，5QI)2. 5G QoS identifier (5QI)
5QI用于表示QoS流的5G QoS特征，5QI是一个标量，用于索引一个5G QoS特性，QoS特性可以包括资源类型、优先级水平、PDB、误包率、平均窗口等等中的至少一项。5QI is used to represent the 5G QoS characteristics of the QoS flow. 5QI is a scalar used to index a 5G QoS characteristic. The QoS characteristic can include at least one of resource type, priority level, PDB, packet error rate, average window, etc. .
3、PDB3. PDB
PDB指的是报文在终端设备和锚点用户面网元之间传输的时延上限。锚点用户面网元在5G系统中可以指的是终结N6接口的UPF。PDB可以用于支持调度和链路层功能配置，如设置调度优先级权重。PDB refers to the upper limit of packet transmission delay between the terminal device and the anchor user plane network element. The anchor user plane network element in the 5G system can refer to the UPF that terminates the N6 interface. PDB can be used to support scheduling and link layer function configuration, such as setting scheduling priority weights.
其中，PDB可以划分为两部分：AN PDB和CN PDB。AN PDB指的是报文在终端设备和接入网设备之间传输的时延上限。CN PDB指的是报文在接入网设备和锚点用户面网元之间传输的时延上限。PDB等于AN PDB和CN PDB之和。Among them, PDB can be divided into two parts: AN PDB and CN PDB. AN PDB refers to the upper limit of packet transmission delay between terminal equipment and access network equipment. CN PDB refers to the upper limit of packet transmission delay between access network equipment and anchor user plane network elements. PDB is equal to the sum of AN PDB and CN PDB.
CN PDB可以配置在会话管理网元上，在会话建立过程中、或会话修改过程中、或切换(handover,HO)过程中、或服务请求过程中，会话管理网元可以将QoS流对应的CN PDB发送至接入网设备，接入网设备可以根据QoS流的5QI索引得到该QoS流对应的PDB，进一步根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。The CN PDB can be configured on the session management network element. During the session establishment process, session modification process, handover (HO) process, or service request process, the session management network element can transfer the CN corresponding to the QoS flow. The PDB is sent to the access network device, and the access network device can obtain the PDB corresponding to the QoS flow based on the 5QI index of the QoS flow, and further determine the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow.
本申请实施例中的CN PDB可以包括第一CN PDB和第二CN PDB。该第一CN PDB可以是指接入网设备与中间用户面网元之间的CN PDB，第二CN PDB可以是指该中间用户面网元与锚点用户面网元之间的CN PDB。针对一个QoS流，CN PDB等于第一CN PDB和第二CN PDB之和。The CN PDB in the embodiment of the present application may include a first CN PDB and a second CN PDB. The first CN PDB may refer to the CN PDB between the access network device and the intermediate user plane network element, and the second CN PDB may refer to the CN PDB between the intermediate user plane network element and the anchor user plane network element. For a QoS flow, the CN PDB is equal to the sum of the first CN PDB and the second CN PDB.
该第一CN PDB可以被配置在用于控制该中间用户面网元的中间会话管理网元上，该第二CN PDB可以被配置在用于控制该锚点用户面网元的锚点会话管理网元上。The first CN PDB may be configured on the intermediate session management network element used to control the intermediate user plane network element, and the second CN PDB may be configured on the anchor session management network element used to control the anchor user plane network element. on the network element.
可以理解的是，本申请实施例中可以分别配置上行CN PDB和/或下行CN PDB，或者也可以不分上下行配置，而配置CN PDB，该种场景下，上行CN PDB和下行CN PDB可以相同。如果配置的是上行CN PDB和/或下行CN PDB，相应的，在确定上行AN PDB时，可以采用上行PDB和上行CN PDB进行计算。而在确定下行AN PDB时，可以采用下行PDB和下行CN PDB进行计算。It can be understood that in the embodiment of the present application, the uplink CN PDB and/or the downlink CN PDB can be configured separately, or the CN PDB can be configured regardless of the uplink and downlink configurations. In this scenario, the uplink CN PDB and the downlink CN PDB can be configured. same. If upstream CN PDB and/or downstream CN PDB are configured, accordingly, when determining the upstream AN PDB, the upstream PDB and upstream CN PDB can be used for calculation. When determining the downlink AN PDB, the downlink PDB and the downlink CN PDB can be used for calculation.
请参照图3，为本申请实施例提供的一种QoS流控制方法的流程示意图，本实施例涉及的是在包括中间会话管理网元和锚点会话管理网元的通信系统中进行分流的场景，图2b为该场景的网络架构示例。如图3所示，该方法可以包括：S101、S102、S103，可选的，还可以包括S104、S105和S106。其中，S101、S102、S103、S104、S105和S106的执行顺序，本申请实施例不作限制。如图所示，本申请实施例的QoS流控制方法包括但不限于以下步骤：Please refer to Figure 3, which is a schematic flow chart of a QoS flow control method provided by an embodiment of the present application. This embodiment relates to a scenario of offloading in a communication system including an intermediate session management network element and an anchor session management network element. , Figure 2b is an example of the network architecture for this scenario. As shown in Figure 3, the method may include: S101, S102, S103, and optionally, may also include S104, S105 and S106. Among them, the execution order of S101, S102, S103, S104, S105 and S106 is not limited by the embodiment of this application. As shown in the figure, the QoS flow control method in this embodiment of the present application includes but is not limited to the following steps:
S101，中间会话管理网元确定将第一QoS流中的第一业务流进行分流，所述第一QoS流包括至少两个业务流，所述至少两个业务流中包括所述第一业务流。S101. The intermediate session management network element determines to offload the first service flow in the first QoS flow. The first QoS flow includes at least two service flows, and the at least two service flows include the first service flow. .
在一个实施例中，终端设备为会话建立了用户面连接，该会话可以是协议数据单元(Protocol Data Unit，PDU)会话，该用户面连接可以经过终端设备、接入网设备、中间用户面网元、锚点用户面网元以及数据网络，例如，可以是图2b中路径1所经过的网元。终端设备可以通过该用户面连接实现对数据网络的访问。其中，中间用户面网元可以与中间会话管理网元相连，并由该中间会话管理网元控制。锚点用户面网元可以与锚点会话管理网元相连，并由锚点会话管理网元控制。In one embodiment, the terminal device establishes a user plane connection for the session. The session may be a Protocol Data Unit (PDU) session. The user plane connection may pass through the terminal device, the access network device, and the intermediate user plane network. Element, anchor user plane network element and data network, for example, can be the network element passed by path 1 in Figure 2b. The terminal device can access the data network through this user plane connection. Among them, the intermediate user plane network element can be connected to the intermediate session management network element and controlled by the intermediate session management network element. The anchor user plane network element can be connected to the anchor session management network element and is controlled by the anchor session management network element.
其中，该会话中可以包括第一QoS流，该第一QoS流中可以包括至少两个业务流。随着终端设备的移动，当终端设备移动到特定位置时，该中间会话管理网元可以确定对第一QoS流中的业务流进行分流。例如，中间会话管理网元检测到终端设备移动到数据网络接入点标识(data network access identifier，DNAI)所对应的位置区域时，确定对第一QoS流中的业务流进行分流。可选的，该DNAI可以是中间会话管理网元从锚点会话管理网元中获取的。The session may include a first QoS flow, and the first QoS flow may include at least two service flows. As the terminal device moves, when the terminal device moves to a specific location, the intermediate session management network element may determine to offload the service flow in the first QoS flow. For example, when the intermediate session management network element detects that the terminal device moves to a location area corresponding to a data network access point identifier (DNAI), it determines to offload the service flow in the first QoS flow. Optionally, the DNAI may be obtained by the intermediate session management network element from the anchor session management network element.
在中间会话管理网元确定分流后，中间会话管理网元可以插入本地会话锚点用户面网元(例如：Local PSA UPF)作为另一个锚点用户面网元，并向该本地会话锚点用户面网元发起会话建立流程，以建立该中间会话管理网元与该本地会话锚点用户面网元之间的控制关系。中间会话管理网元进一步选择分流点以实现将业务流分流到本地会话锚点用户面网元。其中，该分流点可以是会话的用户面连接所经过的中间用户面网元，也可以是中间会话管理网元重新选择的中间用户面网元。若该分流点是中间会话管理网元重新选择的中间用户面网元，则该中间会话管理网元可以向该分流点发起会话建立流程，以建立该中间会话管理网元与该分流点之间的控制关系。After the intermediate session management network element determines the offloading, the intermediate session management network element can insert the local session anchor user plane network element (for example: Local PSA UPF) as another anchor user plane network element and provide services to the local session anchor user. The plane network element initiates a session establishment process to establish a control relationship between the intermediate session management network element and the local session anchor user plane network element. The intermediate session management network element further selects a distribution point to distribute the service flow to the local session anchor user plane network element. The offloading point may be an intermediate user plane network element through which the user plane connection of the session passes, or it may be an intermediate user plane network element reselected by the intermediate session management network element. If the offloading point is an intermediate user plane network element reselected by the intermediate session management network element, the intermediate session management network element can initiate a session establishment process to the offloading point to establish a connection between the intermediate session management network element and the offloading point. control relationship.
示例性的，中间会话管理网元可以根据与该会话关联的策略信息，确定将第一QoS流中的第一业务流进行分流。或者，该中间会话管理网元可以从锚点会话管理网元接收指示信息，并根据该指示信息确定将第一业务流进行分流。可选的，该指示信息可以指示中间会话管理网元将第一业务流绑定到第二QoS流；或者，该指示信息可以指示中间会话管理网元将第一业务流进行分流；或者，该指示信息还可以指示中间会话管理网元为第二QoS流分配QoS流标识；或者，该指示信息可以包括第一业务流的业务数据流(service data flow，SDF)标识等等。For example, the intermediate session management network element may determine to offload the first service flow in the first QoS flow according to the policy information associated with the session. Alternatively, the intermediate session management network element may receive indication information from the anchor session management network element, and determine to offload the first service flow based on the indication information. Optionally, the indication information may instruct the intermediate session management network element to bind the first service flow to the second QoS flow; or, the indication information may instruct the intermediate session management network element to offload the first service flow; or, the indication information may instruct the intermediate session management network element to offload the first service flow; The indication information may also instruct the intermediate session management network element to allocate a QoS flow identifier for the second QoS flow; or the indication information may include a service data flow (service data flow, SDF) identifier of the first service flow, and so on.
可选的，锚点会话管理网元可以通过会话更新响应消息向该中间会话管理网元发送该指示信息，进一步可选的，该会话更新响应消息还可以包括5QI、QoS规则以及QoS文档等。可选的，该会话更新响应消息中的5QI、QoS规则以及QoS文档等可以是与第一业务流对应，例如，锚点会话管理网元可以根据第一QoS流的5QI、QoS规则以及QoS文档，确定与第一业务流对应的5QI、QoS规则以及QoS文档。或者，该会话更新响应消息中的5QI、QoS规则以及QoS文档等也可以是与第一QoS流对应。Optionally, the anchor session management network element can send the instruction information to the intermediate session management network element through a session update response message. Further optionally, the session update response message can also include 5QI, QoS rules, QoS documents, etc. Optionally, the 5QI, QoS rules, and QoS documents in the session update response message may correspond to the first service flow. For example, the anchor session management network element may be based on the 5QI, QoS rules, and QoS documents of the first QoS flow. , determine the 5QI, QoS rules and QoS documents corresponding to the first service flow. Alternatively, the 5QI, QoS rules, QoS document, etc. in the session update response message may also correspond to the first QoS flow.
可以理解的是，在中间会话管理网元从锚点会话管理网元接收会话更新响应消息之前，该中间会话管理网元可以向锚点会话管理网元发送会话更新请求消息，该会话更新请求消息可以包括用于指示对第一QoS流进行分流的分流指示信息，示例性的，该会话更新请求消息可以包括插入分流点的分流指示信息，该锚点会话管理网元可以根据该分流指示信息确定将第一业务流进行分流。示例性的，锚点会话管理网元可以根据从PCF接收到的与会话关联的策略信息、以及中间会话管理网元支持的DNAI列表，确定将第一业务流分流到本地。其中，与会话关联的策略信息，具体可以是DNAI与业务流的对应关系。It can be understood that, before the intermediate session management network element receives the session update response message from the anchor session management network element, the intermediate session management network element can send a session update request message to the anchor session management network element. The session update request message It may include offload indication information for instructing to offload the first QoS flow. For example, the session update request message may include offload indication information inserted into the offload point, and the anchor session management network element may determine based on the offload indication information. Divert the first business flow. For example, the anchor session management network element may determine to offload the first service flow locally based on the policy information associated with the session received from the PCF and the DNAI list supported by the intermediate session management network element. The policy information associated with the session may specifically be the corresponding relationship between DNAI and service flow.
S102，中间会话管理网元将第一业务流绑定到第二QoS流，并为第二QoS流分配QoS流标识；S102. The intermediate session management network element binds the first service flow to the second QoS flow and assigns a QoS flow identifier to the second QoS flow;
在一个实施例中，中间会话管理网元对第一业务流执行QoS流绑定(例如，QoSflow binding)，例如，将第一业务流绑定到第二QoS流。中间会话管理网元为该第二QoS流分配QoS流标识。In one embodiment, the intermediate session management network element performs QoS flow binding (eg, QoSflow binding) on the first service flow, for example, binds the first service flow to the second QoS flow. The intermediate session management network element allocates a QoS flow identifier to the second QoS flow.
进一步的，中间会话管理网元可以确定第二QoS流的QoS规则、QoS文档以及5QI。可选的，该第二QoS流的QoS规则、QoS文档以及5QI可以是中间会话管理网元根据从锚点会话管理网元接收的5QI、QoS规则以及QoS文档确定的。Further, the intermediate session management network element can determine the QoS rules, QoS documents and 5QI of the second QoS flow. Optionally, the QoS rules, QoS documents and 5QI of the second QoS flow may be determined by the intermediate session management network element based on the 5QI, QoS rules and QoS documents received from the anchor session management network element.
其中，第二QoS流的QoS文档可以与第一QoS流的QoS文档相同；第二QoS流的QoS规则包含第二QoS流的QoS流标识、第一业务流对应的报文过滤集(packet filter set)等。The QoS document of the second QoS flow may be the same as the QoS document of the first QoS flow; the QoS rule of the second QoS flow includes the QoS flow identifier of the second QoS flow and the packet filter set (packet filter) corresponding to the first service flow. set) etc.
S103，中间会话管理网元将QoS流标识发送给锚点会话管理网元。S103. The intermediate session management network element sends the QoS flow identifier to the anchor session management network element.
在一个实施例中，中间会话管理网元可以向锚点会话管理网元发送会话更新请求消息，该会话更新请求消息包括为该第二QoS流分配的QoS流标识。相应的，锚点会话管理网元接收该QoS流标识，后续在执行QoS流绑定时，可以避免锚点会话管理网元分配重复的QFI。In one embodiment, the intermediate session management network element may send a session update request message to the anchor session management network element, where the session update request message includes the QoS flow identifier allocated for the second QoS flow. Correspondingly, the anchor session management network element receives the QoS flow identifier, and when subsequently performing QoS flow binding, the anchor session management network element can be prevented from allocating duplicate QFIs.
进一步可选的，该中间会话管理网元还可以将为该第二QoS流分配的QoS流标识发送给接入网设备以及终端设备。例如，中间会话管理网元可以通过N1N2消息传输请求中的N1 SM信息将第二QoS流的QoS流标识发送给终端设备，通过N1N2消息传输请求中的N2 SM信息将第二QoS流的QoS流标识发送给接入网设备。其中，N1 SM信息还可以包括发送至终端设备的该第二QoS流的QoS规则；N2 SM信息还可以包括发送至接入网设备的该第二QoS流的QoS文档。Further optionally, the intermediate session management network element may also send the QoS flow identifier assigned to the second QoS flow to the access network device and the terminal device. For example, the intermediate session management network element may send the QoS flow identifier of the second QoS flow to the terminal device through the N1 SM information in the N1N2 message transmission request, and transmit the QoS flow identifier of the second QoS flow through the N2 SM information in the N1N2 message transmission request. The identification is sent to the access network equipment. The N1 SM information may also include the QoS rules of the second QoS flow sent to the terminal device; the N2 SM information may also include the QoS document of the second QoS flow sent to the access network device.
S104，中间会话管理网元确定第二QoS流对应的CN PDB。S104: The intermediate session management network element determines the CN PDB corresponding to the second QoS flow.
在一个实施例中，第二QoS流的用户面连接所经过的网元可以包括终端设备、接入网设备、中间用户面网元以及本地会话锚点用户面网元，例如，可以是图2b中路径2所经过的网元。可选的，该中间用户面网元可以是与接入网设备相连的用户面网元。In one embodiment, the network elements passed by the user plane connection of the second QoS flow may include terminal equipment, access network equipment, intermediate user plane network elements, and local session anchor user plane network elements. For example, it may be as shown in Figure 2b The network elements passed by path 2. Optionally, the intermediate user plane network element may be a user plane network element connected to the access network device.
可选的，中间会话管理网元可以通过以下两种方式确定第二QoS流对应的CN PDB，可以理解的是，以下两种方式仅为举例，不构成对本申请的限定：Optionally, the intermediate session management network element can determine the CN PDB corresponding to the second QoS flow through the following two methods. It can be understood that the following two methods are only examples and do not constitute a limitation on this application:
方式一，接入网设备与中间用户面网元之间的用户面连接、以及中间用户面网元与本地会话锚点用户面网元之间的用户面连接均由中间会话管理网元管理。该中间会话管理网元上可以配置了第一CN PDB配置信息和第二CN PDB配置信息。该第一CN PDB配置信息可以包括各种拓扑组合、各个5QI与各个第一CN PDB之间的对应关系，该各种拓扑组合可以是各个接入网设备与该中间会话管理网元控制的各个中间用户面网元的拓扑组合。例如，可以是一种拓扑组合、一个5QI对应一个第一CN PDB。该第二CN PDB配置信息可以包括各种拓扑组合、各个5QI与各个第二CN PDB之间的对应关系，该各种拓扑组合可以是该中间会话管理网元控制的各个中间用户面网元与该中间会话管理网元控制的各个本地会话锚点用户面网元的拓扑组合。例如，可以是一种拓扑组合、一个5QI对应一个第二CN PDB。Method 1: The user plane connection between the access network device and the intermediate user plane network element, and the user plane connection between the intermediate user plane network element and the local session anchor user plane network element are all managed by the intermediate session management network element. The first CN PDB configuration information and the second CN PDB configuration information may be configured on the intermediate session management network element. The first CN PDB configuration information may include various topology combinations and corresponding relationships between each 5QI and each first CN PDB. The various topology combinations may be various topology combinations controlled by each access network device and the intermediate session management network element. Topological combination of intermediate user plane network elements. For example, it can be a topology combination, and one 5QI corresponds to a first CN PDB. The second CN PDB configuration information may include various topology combinations and the corresponding relationships between each 5QI and each second CN PDB. The various topology combinations may be between each intermediate user plane network element controlled by the intermediate session management network element and The intermediate session management network element controls the topological combination of each local session anchor user plane network element. For example, it can be a topology combination, and one 5QI corresponds to a second CN PDB.
中间会话管理网元可以根据第一CN PDB配置信息、第二QoS流的5QI和第二QoS流的用户面连接所经过的接入网设备与中间用户面网元，确定第二QoS流对应的第一CN PDB。中间会话管理网元可以根据第二CN PDB配置信息、第二QoS流的5QI和第二QoS流的用户面连接所经过的中间用户面网元和本地会话锚点用户面网元，确定第二QoS流对应的第二CNPDB。其中，第二QoS流的5QI可以来自于锚点会话管理网元，或者，也可以是中间会话管理网元根据会话的策略得到的。The intermediate session management network element may determine the access network device and intermediate user plane network element corresponding to the second QoS flow based on the first CN PDB configuration information, the 5QI of the second QoS flow, and the access network device and intermediate user plane network element through which the user plane connection of the second QoS flow passes. First CN PDB. The intermediate session management network element may determine the second CN PDB configuration information, the 5QI of the second QoS flow, and the intermediate user plane network element and the local session anchor user plane network element through which the user plane connection of the second QoS flow passes. The second CNPDB corresponding to the QoS flow. The 5QI of the second QoS flow may come from the anchor session management network element, or may be obtained from the intermediate session management network element according to the session policy.
进一步，中间会话管理网元可以根据第二QoS流对应的第一CN PDB和第二QoS流对应的第二CN PDB，确定该第二QoS流对应的CN PDB。Further, the intermediate session management network element may determine the CN PDB corresponding to the second QoS flow based on the first CN PDB corresponding to the second QoS flow and the second CN PDB corresponding to the second QoS flow.
下面以第一CN PDB为N3 CN PDB，第二CN PDB为N9 CN PDB，中间会话管理网元为I-SMF，接入网设备为RAN，中间用户面网元为I-UPF，本地会话锚点用户面网元为L-UPF作为举例对确定第二QoS流对应的CN PDB进行说明，该I-SMF上可以配置N3 CN PDB配置信息和N9 CN PDB配置信息，其中，N3 CN PDB配置信息可以如表格一所示，N9 CN PDB配置信息可以如表格二所示。In the following, the first CN PDB is N3 CN PDB, the second CN PDB is N9 CN PDB, the intermediate session management network element is I-SMF, the access network device is RAN, the intermediate user plane network element is I-UPF, and the local session anchor The point user plane network element is L-UPF as an example to illustrate the determination of the CN PDB corresponding to the second QoS flow. The N3 CN PDB configuration information and the N9 CN PDB configuration information can be configured on the I-SMF. Among them, the N3 CN PDB configuration information It can be as shown in Table 1, and the N9 CN PDB configuration information can be as shown in Table 2.
表格一Form 1
表格二Form 2
例如，第二QoS流的用户面连接经过RAN2、I-UPF1和L-UPF2，且QoS流的5QI为5QI2，则可以从表格一索引得到第二QoS流对应N3 CN PDB3。从表格二索引得到第二QoS流对应N9CN PDB3。进一步，I-SMF确定第二QoS流对应的CN PDB为N3 CN PDB3与N9 CN PDB3之和。For example, if the user plane connection of the second QoS flow passes through RAN2, I-UPF1 and L-UPF2, and the 5QI of the QoS flow is 5QI2, then the N3 CN PDB3 corresponding to the second QoS flow can be obtained from the index in Table 1. The second QoS flow corresponding to N9CN PDB3 is obtained from the index in Table 2. Further, the I-SMF determines that the CN PDB corresponding to the second QoS flow is the sum of N3 CN PDB3 and N9 CN PDB3.
方式二，接入网设备与中间用户面网元之间的用户面连接、以及中间用户面网元与本地会话锚点用户面网元之间的用户面连接均由中间会话管理网元管理。该中间会话管理网元上可以配置CN PDB配置信息，该CN PDB配置信息可以包括各种拓扑组合、各个5QI与各个CN PDB之间的对应关系，该各种拓扑组合可以是各个接入网设备、该中间会话管理网元控制的各个中间用户面网元和该中间会话管理网元控制的各个本地会话锚点用户面网元之间的拓扑组合。例如，可以是一种拓扑组合、一个5QI对应一个CN PDB。Method 2: The user plane connection between the access network device and the intermediate user plane network element, and the user plane connection between the intermediate user plane network element and the local session anchor user plane network element are all managed by the intermediate session management network element. The CN PDB configuration information can be configured on the intermediate session management network element. The CN PDB configuration information can include various topology combinations and the correspondence between each 5QI and each CN PDB. The various topology combinations can be each access network device. , a topological combination between each intermediate user plane network element controlled by the intermediate session management network element and each local session anchor user plane network element controlled by the intermediate session management network element. For example, it can be a topology combination and one 5QI corresponding to one CN PDB.
中间会话管理网元可以根据CN PDB配置信息、第二QoS流的5QI和第二QoS流的用户面连接所经过的接入网设备与中间用户面网元和本地会话锚点用户面网元，确定第二QoS流对应的CN PDB。The intermediate session management network element can be based on the CN PDB configuration information, the 5QI of the second QoS flow and the user plane connection of the second QoS flow through the access network equipment and the intermediate user plane network element and the local session anchor user plane network element. Determine the CN PDB corresponding to the second QoS flow.
下面继续以中间会话管理网元为I-SMF，接入网设备为RAN，中间用户面网元为I-UPF，本地会话锚点用户面网元为L-UPF作为举例，对确定第二QoS流对应的CN PDB进行说明，该I-SMF上可以配置CN PDB配置信息，该CN PDB配置信息可以如表格三所示。The following continues to take the intermediate session management network element as I-SMF, the access network equipment as RAN, the intermediate user plane network element as I-UPF, and the local session anchor user plane network element as L-UPF as an example to determine the second QoS. The CN PDB corresponding to the flow is described. The CN PDB configuration information can be configured on the I-SMF. The CN PDB configuration information can be as shown in Table 3.
表格三Form 3
例如，第二QoS流的用户面连接经过RAN2、I-UPF1和L-UPF2，且QoS流的5QI为5QI2，则I-SMF从表格三索引得到第二QoS流对应CN PDB3。For example, the user plane connection of the second QoS flow passes through RAN2, I-UPF1 and L-UPF2, and the 5QI of the QoS flow is 5QI2, then I-SMF obtains the corresponding CN PDB3 of the second QoS flow from the index in Table 3.
S105，中间会话管理网元将第二QoS流对应的CN PDB发送给接入网设备。S105: The intermediate session management network element sends the CN PDB corresponding to the second QoS flow to the access network device.
S106，接入网设备根据第二QoS流对应的PDB和第二QoS流对应的CN PDB，确定第二QoS流对应的AN PDB。S106: The access network device determines the AN PDB corresponding to the second QoS flow based on the PDB corresponding to the second QoS flow and the CN PDB corresponding to the second QoS flow.
在一个实施例中，中间会话管理网元可以将第二QoS流的QoS流标识与该第二QoS流对应的CN PDB之间的对应关系发送给接入网设备。进一步可选的，接入网设备可以根据第二QoS流的5QI，确定该第二QoS流对应的PDB，并根据第二QoS流对应的PDB和该第二QoS流对应的CN PDB，确定该第二QoS流对应的AN PDB。In one embodiment, the intermediate session management network element may send the corresponding relationship between the QoS flow identifier of the second QoS flow and the CN PDB corresponding to the second QoS flow to the access network device. Further optionally, the access network device may determine the PDB corresponding to the second QoS flow according to the 5QI of the second QoS flow, and determine the PDB corresponding to the second QoS flow and the CN PDB corresponding to the second QoS flow. AN PDB corresponding to the second QoS flow.
进一步可选的，中间会话管理网元也可以将第一QoS流的QoS流标识与第一QoS流对应的CN PDB之间的对应关系发送给接入网设备，并由接入网设备确定第一QoS流对应的AN PDB。其中，第一QoS流对应的CN PDB可以是由中间会话管理网元确定的，具体可以参照图7和图8实施例中的描述。或者，第一QoS流对应的CN PDB也可以是由锚点会话管理网元确定的，具体可以参照图5和图6实施例中的描述。Further optionally, the intermediate session management network element may also send the corresponding relationship between the QoS flow identifier of the first QoS flow and the CN PDB corresponding to the first QoS flow to the access network device, and the access network device determines the second QoS flow identifier. AN PDB corresponding to a QoS flow. The CN PDB corresponding to the first QoS flow may be determined by the intermediate session management network element. For details, please refer to the description in the embodiments of FIG. 7 and FIG. 8 . Alternatively, the CN PDB corresponding to the first QoS flow may also be determined by the anchor session management network element. For details, please refer to the description in the embodiments of FIG. 5 and FIG. 6 .
或者，还可以是中间会话管理网元将第一QoS流对应的第一CN PDB发送给接入网设备，锚点会话管理网元将第一QoS流对应的第二CN PDB发送给接入网设备，并由接入网设备确定第一QoS流对应的AN PDB，具体可以参照图9和图10实施例的描述。Alternatively, the intermediate session management network element may also send the first CN PDB corresponding to the first QoS flow to the access network device, and the anchor session management network element may send the second CN PDB corresponding to the first QoS flow to the access network. equipment, and the access network equipment determines the AN PDB corresponding to the first QoS flow. For details, refer to the description of the embodiments in Figures 9 and 10.
结合图4，对图3所示的方法进行更详细的介绍。为便于理解，图4中以终端设备为UE，移动管理网元为AMF，接入网设备为RAN，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，中间用户面网元为I-UPF，锚点用户面网元为UPF为例进行说明。Combined with Figure 4, the method shown in Figure 3 is introduced in more detail. For ease of understanding, in Figure 4, the terminal device is UE, the mobility management network element is AMF, the access network device is RAN, the intermediate session management network element is I-SMF, the anchor session management network element is SMF, and the intermediate user plane network The network element is I-UPF and the anchor user plane network element is UPF. This is explained as an example.
S201，UE建立PDU会话。其中，该PDU会话的用户面连接经过UE、RAN、I-UPF、UPF。其中I-UPF由I-SMF控制，UPF由SMF控制。该PDU会话可以包括第一QoS流。S201, the UE establishes a PDU session. Among them, the user plane connection of this PDU session passes through UE, RAN, I-UPF, and UPF. Among them, I-UPF is controlled by I-SMF, and UPF is controlled by SMF. The PDU session may include the first QoS flow.
S202，I-SMF决定插入本地会话锚点用户面网元(例如L-UPF)作为会话的另一个锚点用户面网元。I-SMF选择L-UPF，并向L-UPF发起N4会话建立过程。S202. The I-SMF decides to insert the local session anchor user plane network element (for example, L-UPF) as another anchor user plane network element of the session. I-SMF selects L-UPF and initiates the N4 session establishment process to L-UPF.
S203，I-SMF选择分流点，其中，该分流点可以是会话的用户面连接所经过的I-UPF，或者也可以是I-SMF重新选择的I-UPF，若该分流点是I-SMF重新选择的，I-SMF可以向分流点发起N4会话建立流程。S203. The I-SMF selects a distribution point. The distribution point may be the I-UPF through which the user plane connection of the session passes, or it may be the I-UPF reselected by the I-SMF. If the distribution point is the I-SMF If reselected, I-SMF can initiate the N4 session establishment process to the offloading point.
S204，I-SMF向SMF发送会话更新请求消息，该会话更新请求消息可以包括I-SMF所插入的分流点的指示信息。S204. The I-SMF sends a session update request message to the SMF. The session update request message may include indication information of the offloading point inserted by the I-SMF.
其中，该会话更新请求消息可以对应到服务化接口Nsmf_PDUSession_update_request。The session update request message may correspond to the service interface Nsmf_PDUSession_update_request.
S205，SMF更新UPF，即SMF向UPF发起N4会话修改流程。其中，若步骤S203中分流点是I-SMF重新选择的，则SMF可以通过N4会话修改流程建立分流点和该UPF之间的下行隧道。若步骤S203中的分流点不是I-SMF重新选择的，则SMF可以不用向UPF发起N4会话修改流程。S205, SMF updates UPF, that is, SMF initiates the N4 session modification process to UPF. Among them, if the offloading point is reselected by I-SMF in step S203, the SMF can establish a downlink tunnel between the offloading point and the UPF through the N4 session modification process. If the offloading point in step S203 is not reselected by the I-SMF, the SMF does not need to initiate the N4 session modification process to the UPF.
S206，SMF向I-SMF发送会话更新响应消息，可选的，该会话更新响应消息可以包括指示信息，该指示信息可以指示I-SMF将第一业务流进行分流，或者该指示信息可以是指示I-SMF将第一业务流绑定到第二QoS流；或者，该指示信息可以指示I-SMF为第二QoS流分配QoS流标识；或者，该指示信息还可以包括第一业务流的业务数据流标识SDF1。其中，SMF可以是根据会话的策略信息，确定进行分流的第一业务流。S206. The SMF sends a session update response message to the I-SMF. Optionally, the session update response message may include indication information. The indication information may instruct the I-SMF to offload the first service flow, or the indication information may be an indication. The I-SMF binds the first service flow to the second QoS flow; or the indication information may instruct the I-SMF to allocate a QoS flow identifier to the second QoS flow; or the indication information may also include the service of the first service flow. Data flow identifier SDF1. The SMF may determine the first service flow to be offloaded based on session policy information.
可选的，该指示信息可以是包含在会话更新响应消息中的N4信息中，I-SMF通过解析该N4信息获得指示信息，具体的，该指示信息可以是N4信息中的已有参数，如第一业务流标识SDF1。示例性的，该会话更新响应消息还可以包括用于指示I-SMF解析N4信息的指示信息。Optionally, the indication information may be N4 information contained in the session update response message. I-SMF obtains the indication information by parsing the N4 information. Specifically, the indication information may be existing parameters in the N4 information, such as The first service flow identifier SDF1. Exemplarily, the session update response message may also include instruction information used to instruct the I-SMF to parse N4 information.
可以理解的是，用于指示I-SMF将第一业务流进行分流的指示信息也可以不包含在N4信息中，例如，可以与N4信息并列包含在会话更新响应消息中。It can be understood that the instruction information used to instruct the I-SMF to offload the first service flow may not be included in the N4 information. For example, it may be included in the session update response message in parallel with the N4 information.
其中，该会话更新响应消息可以对应到服务化接口Nsmf_PDUSession_update_response。Among them, the session update response message can correspond to the service interface Nsmf_PDUSession_update_response.
S207，I-SMF根据指示信息，确定将第一业务流分流到本地。具体的，I-SMF对第一业务流执行QoS流绑定(例如，QoS flow binding)，从而将第一业务流绑定到第二QoS流，并为该第二QoS流分配QoS流标识。S207: The I-SMF determines to offload the first service flow to the local based on the indication information. Specifically, the I-SMF performs QoS flow binding (for example, QoS flow binding) on the first service flow, thereby binding the first service flow to the second QoS flow, and allocates a QoS flow identifier to the second QoS flow.
S208，I-SMF可以向SMF发送为该第二QoS流分配的QoS流标识，例如，I-SMF向SMF发送会话更新请求消息，该会话更新请求消息包括为该第二QoS流分配的QoS流标识。后续流程中，当SMF执行QoS流绑定时，可以避免分配重复的QoS流标识。S208. The I-SMF may send the QoS flow identifier allocated to the second QoS flow to the SMF. For example, the I-SMF sends a session update request message to the SMF. The session update request message includes the QoS flow allocated to the second QoS flow. logo. In subsequent processes, when SMF performs QoS flow binding, it can avoid assigning duplicate QoS flow identifiers.
进一步，I-SMF可以根据N3 CN PDB配置信息和N9 CN PDB配置信息，确定该第二QoS流对应的CN PDB，或者，I-SMF可以根据CN PDB配置信息，确定该第二QoS流对应的CNPDB。具体确定方法可以参照图3中步骤S104的描述，在此不再赘述。Further, the I-SMF can determine the CN PDB corresponding to the second QoS flow based on the N3 CN PDB configuration information and the N9 CN PDB configuration information, or the I-SMF can determine the CN PDB corresponding to the second QoS flow based on the CN PDB configuration information. CNPDB. For the specific determination method, reference can be made to the description of step S104 in Figure 3, which will not be described again here.
S209，I-SMF向L-UPF发起N4会话修改过程，例如，通过N4会话修改过程将分流点的信息发送至L-UPF。S209: I-SMF initiates an N4 session modification process to L-UPF, for example, sends the offloading point information to L-UPF through the N4 session modification process.
I-SMF向分流点发起N4会话修改过程，例如，通过N4会话修改过程指示分流点将第一业务流分流发送至L-UPF。The I-SMF initiates an N4 session modification process to the offloading point, for example, instructs the offloading point to offload and send the first service flow to the L-UPF through the N4 session modification process.
S210，I-SMF向AMF发送N1N2消息传输请求，该N1N2消息传输请求包括PDU会话标识、N2 SM信息、N1 SM信息，其中，N1 SM信息是指I-SMF发送给UE的关于会话的信息，N2 SM信息是指I-SMF发送给RAN的关于会话的信息。S210. The I-SMF sends an N1N2 message transmission request to the AMF. The N1N2 message transmission request includes the PDU session identifier, N2 SM information, and N1 SM information. The N1 SM information refers to the session information sent by the I-SMF to the UE. N2 SM information refers to the session information sent by I-SMF to RAN.
其中，N1N2消息传输请求还可以包括第二QoS流对应的CN PDB。示例性的，第二QoS流对应的CN PDB可以被包含在N2 SM信息中。The N1N2 message transmission request may also include the CN PDB corresponding to the second QoS flow. For example, the CN PDB corresponding to the second QoS flow may be included in the N2 SM information.
可选的，N2 SM信息还可以包括会话标识、第二QoS流对应的QoS流标识、第二QoS流对应的QoS文档等。N1 SM信息可以包括第二QoS流对应的QoS规则以及第二QoS流对应的QoS流标识。Optionally, the N2 SM information may also include a session identifier, a QoS flow identifier corresponding to the second QoS flow, a QoS document corresponding to the second QoS flow, etc. The N1 SM information may include the QoS rule corresponding to the second QoS flow and the QoS flow identifier corresponding to the second QoS flow.
S211，AMF向RAN发送N2 PDU会话请求，该N2 PDU会话请求包括N2 SM信息、NAS消息。其中NAS消息包含N1 SM信息。S211. The AMF sends an N2 PDU session request to the RAN. The N2 PDU session request includes N2 SM information and NAS messages. The NAS message contains N1 SM information.
S212，分流点插入流程的其他步骤。S212, other steps of the branch point insertion process.
可以理解的是，上述各个步骤的执行顺序本申请不作限定。It can be understood that the execution order of each of the above steps is not limited in this application.
在图5-图10实施例中，通信系统包括锚点会话管理网元和中间会话管理网元，该中间会话管理网元控制中间用户面网元，该锚点会话管理网元控制锚点用户面网元。该中间会话管理网元上配置了第一CN PDB配置信息，该第一CN PDB配置信息可以包括各种拓扑组合、各个5QI与各个第一CN PDB之间的对应关系，该各种拓扑组合可以是各个接入网设备与该中间会话管理网元控制的各个中间用户面网元之间的拓扑组合。例如，可以是一种拓扑组合、一个5QI对应一个第一CN PDB。该锚点会话管理网元上配置了第二CN PDB配置信息，该第二CN PDB配置信息可以包括各种拓扑组合、各个5QI与各个第二CN PDB之间的对应关系，该各种拓扑组合可以是各个中间用户面网元与该锚点会话管理网元控制的各个锚点用户面网元之间的拓扑组合。例如，可以是一种拓扑组合、一个5QI对应一个第二CN PDB。In the embodiments of Figures 5 to 10, the communication system includes an anchor session management network element and an intermediate session management network element. The intermediate session management network element controls the intermediate user plane network element. The anchor session management network element controls the anchor user. Surface network elements. The first CN PDB configuration information is configured on the intermediate session management network element. The first CN PDB configuration information may include various topology combinations and the corresponding relationships between each 5QI and each first CN PDB. The various topology combinations may It is the topological combination between each access network device and each intermediate user plane network element controlled by the intermediate session management network element. For example, it can be a topology combination, and one 5QI corresponds to a first CN PDB. The second CN PDB configuration information is configured on the anchor session management network element. The second CN PDB configuration information may include various topology combinations and the correspondence between each 5QI and each second CN PDB. The various topology combinations It may be a topological combination between each intermediate user plane network element and each anchor user plane network element controlled by the anchor session management network element. For example, it can be a topology combination, and one 5QI corresponds to a second CN PDB.
下面以第一CN PDB为N3 CN PDB，第二CN PDB为N9 CN PDB，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，接入网设备为RAN，中间用户面网元为I-UPF，锚点用户面网元为UPF作为举例说明。In the following, the first CN PDB is N3 CN PDB, the second CN PDB is N9 CN PDB, the intermediate session management network element is I-SMF, the anchor session management network element is SMF, the access network equipment is RAN, and the intermediate user plane network The element is I-UPF, and the anchor user plane network element is UPF as an example.
其中，I-SMF上配置的第一CN PDB配置信息可以如表格四所示，该表格四中包括各个RAN和I-SMF控制的各个I-UPF的各种拓扑组合、各个5QI与各个N3 CN PDB之间的对应关系。Among them, the first CN PDB configuration information configured on the I-SMF can be as shown in Table 4. Table 4 includes various topology combinations of each RAN and each I-UPF controlled by the I-SMF, each 5QI and each N3 CN Correspondence between PDBs.
表格四Form 4
其中，SMF上配置的第二CN PDB配置信息可以如表格五所示，该表格五中包括各个I-UPF和SMF控制的各个UPF的各种拓扑组合、各个5QI与各个N9 CN PDB之间的对应关系。Among them, the configuration information of the second CN PDB configured on the SMF can be as shown in Table 5. Table 5 includes various topological combinations of each I-UPF and each UPF controlled by the SMF, and the relationship between each 5QI and each N9 CN PDB. Correspondence.
表格五Form 5
基于中间会话管理网元上配置了第一CN PDB配置信息，锚点会话管理网元上配置了第二CN PDB配置信息。请参照图5和图6所示，中间会话管理网元可以将QoS流对应的第一CN PDB发送给锚点会话管理网元，并由锚点会话管理网元确定QoS流对应的CN PDB，可选的，最终由接入网设备根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的ANPDB。或者，请参照图7和图8所示，锚点会话管理网元可以将QoS流对应的第二CN PDB发送给中间会话管理网元，并由中间会话管理网元确定QoS流对应的CN PDB，可选的，最终由接入网设备根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。或者，请参照图9和图10所示，中间会话管理网元可以将QoS流对应的第一CN PDB发送给接入网设备，锚点会话管理网元将QoS流对应的第二CN PDB发送给接入网设备，最终由接入网设备根据QoS流对应的PDB、QoS流对应的第一CN PDB以及QoS流对应的第二CN PDB，确定QoS流对应的ANPDB。Based on the fact that the first CN PDB configuration information is configured on the intermediate session management network element, the second CN PDB configuration information is configured on the anchor session management network element. Please refer to Figure 5 and Figure 6. The intermediate session management network element can send the first CN PDB corresponding to the QoS flow to the anchor session management network element, and the anchor session management network element determines the CN PDB corresponding to the QoS flow. Optionally, the access network device ultimately determines the ANPDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow. Alternatively, please refer to Figures 7 and 8. The anchor session management network element can send the second CN PDB corresponding to the QoS flow to the intermediate session management network element, and the intermediate session management network element determines the CN PDB corresponding to the QoS flow. , optionally, the access network device ultimately determines the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow. Alternatively, please refer to Figures 9 and 10. The intermediate session management network element can send the first CN PDB corresponding to the QoS flow to the access network device, and the anchor session management network element can send the second CN PDB corresponding to the QoS flow. to the access network device, and finally the access network device determines the ANPDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow, the first CN PDB corresponding to the QoS flow, and the second CN PDB corresponding to the QoS flow.
下面分别对图5-图10的实施例进行具体阐述。其中，图2a和图2b可以为实施各实施例的两种网络架构示例，其中，在图2b所示分流场景的网络架构中，本申请实施例的QoS流可以是指路径1所对应的QoS流。The embodiments of Figures 5 to 10 will be described in detail below respectively. Among them, Figure 2a and Figure 2b can be two network architecture examples for implementing various embodiments. In the network architecture of the offloading scenario shown in Figure 2b, the QoS flow in the embodiment of the present application can refer to the QoS corresponding to path 1. flow.
请参照图5，为本申请实施例提供的一种QoS流控制方法的流程示意图，本实施例涉及的是在包括中间会话管理网元和锚点会话管理网元的通信系统中，由锚点会话管理网元确定CN PDB的场景，如图5所示，该方法可以包括：S301、S302、S303，可选的，还可以用包括S304和S305。其中，S301、S302、S303、S304和S305的执行顺序，本申请实施例不作限制。如图所示，本申请实施例的QoS流控制方法包括但不限于以下步骤：Please refer to Figure 5, which is a schematic flow chart of a QoS flow control method provided by an embodiment of the present application. This embodiment relates to a communication system including an intermediate session management network element and an anchor session management network element. The scenario in which the session management network element determines the CN PDB is shown in Figure 5. The method may include: S301, S302, S303, and optionally, S304 and S305. Among them, the execution order of S301, S302, S303, S304 and S305 is not limited by the embodiment of this application. As shown in the figure, the QoS flow control method in this embodiment of the present application includes but is not limited to the following steps:
S301，中间会话管理网元将QoS流对应的第一CN PDB发送给锚点会话管理网元，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，其中，所述中间会话管理网元与所述中间用户面网元相连。S301. The intermediate session management network element sends the first CN PDB corresponding to the QoS flow to the anchor session management network element. The first CN PDB is the CN PDB between the access network device and the intermediate user plane network element, where, The intermediate session management network element is connected to the intermediate user plane network element.
方式1，在中间会话管理网元获取到QoS流的5QI的情况下，中间会话管理网元可以根据QoS流的用户面连接所经过的接入网设备和中间用户面网元的拓扑组合、QoS流的5QI以及配置在中间会话管理网元上的第一CN PDB配置信息，确定该QoS流对应的第一CN PDB。例如，中间会话管理网元从第一CN PDB配置信息中选择该拓扑组合、QoS流的5QI对应的第一CN PDB，作为QoS流对应的第一CN PDB。其中，中间会话管理网元获取QoS流的5QI可以是在会话建立过程中获取到的。例如，锚点会话管理网元将QoS流的5QI发送给中间会话管理网元，或者，中间会话管理网元通过解析QoS流对应的QoS文档获得QoS流的5QI。进一步，中间会话管理网元将所确定的QoS流对应的第一CN PDB发送给锚点会话管理网元。Method 1: When the intermediate session management network element obtains the 5QI of the QoS flow, the intermediate session management network element can use the topology combination and QoS of the access network equipment and intermediate user plane network elements through which the user plane connection of the QoS flow passes. The 5QI of the flow and the first CN PDB configuration information configured on the intermediate session management network element determine the first CN PDB corresponding to the QoS flow. For example, the intermediate session management network element selects the first CN PDB corresponding to the topology combination and the 5QI of the QoS flow from the first CN PDB configuration information as the first CN PDB corresponding to the QoS flow. The intermediate session management network element may obtain the 5QI of the QoS flow during the session establishment process. For example, the anchor session management network element sends the 5QI of the QoS flow to the intermediate session management network element, or the intermediate session management network element obtains the 5QI of the QoS flow by parsing the QoS document corresponding to the QoS flow. Further, the intermediate session management network element sends the first CN PDB corresponding to the determined QoS flow to the anchor session management network element.
进一步，中间会话管理网元可以通过第一消息将QoS流对应的第一CN PDB发送给锚点会话管理网元。其中，中间会话管理网元可以通过会话修改流程、Xn或N2切换流程或服务请求流程将QoS流对应的第一CN PDB发送给锚点会话管理网元。可选的，该第一消息可以是会话更新请求消息(例如：Nsmf_PDUSession_Update Request)。Further, the intermediate session management network element may send the first CN PDB corresponding to the QoS flow to the anchor session management network element through the first message. Among them, the intermediate session management network element can send the first CN PDB corresponding to the QoS flow to the anchor session management network element through the session modification process, Xn or N2 switching process or service request process. Optionally, the first message may be a session update request message (for example: Nsmf_PDUSession_Update Request).
具体的，以第一CN PDB为N3 CN PDB，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，接入网设备为RAN，中间用户面网元为I-UPF，I-SMF上配置的第一CN PDB配置信息为表格四作为举例。如果QoS流的用户面连接经过RAN2和I-UPF1，且QoS流的5QI为5QI2，则确定QoS流对应N3 CN PDB3。I-SMF可以通过会话更新请求消息将QoS流对应的N3 CN PDB3发送给SMF。Specifically, the first CN PDB is the N3 CN PDB, the intermediate session management network element is the I-SMF, the anchor session management network element is the SMF, the access network equipment is the RAN, and the intermediate user plane network element is the I-UPF. -The first CN PDB configuration information configured on the SMF is Table 4 as an example. If the user plane connection of the QoS flow passes through RAN2 and I-UPF1, and the 5QI of the QoS flow is 5QI2, it is determined that the QoS flow corresponds to N3 CN PDB3. I-SMF can send the N3 CN PDB3 corresponding to the QoS flow to SMF through the session update request message.
方式2，在中间会话管理网元未获取到QoS流的5QI的情况下，中间会话管理网元可以根据QoS流的用户面连接所经过的接入网设备和中间用户面网元的拓扑组合以及配置在中间会话管理网元上的第一CN PDB配置信息，确定该拓扑组合对应的第一CN PDB列表。例如，中间会话管理网元从第一CN PDB配置信息中选择该拓扑组合对应的第一CN PDB列表。该第一CN PDB列表可以包括至少一个5QI与至少一个第一CN PDB之间的对应关系，其中，一个5QI可以对应一个第一CN PDB。Method 2: When the intermediate session management network element does not obtain the 5QI of the QoS flow, the intermediate session management network element can use the topology combination of the access network equipment and the intermediate user plane network element through which the user plane connection of the QoS flow passes and The first CN PDB configuration information configured on the intermediate session management network element determines the first CN PDB list corresponding to the topology combination. For example, the intermediate session management network element selects the first CN PDB list corresponding to the topology combination from the first CN PDB configuration information. The first CN PDB list may include a correspondence relationship between at least one 5QI and at least one first CN PDB, where one 5QI may correspond to one first CN PDB.
进一步，中间会话管理网元可以通过第二消息将该第一CN PDB列表发送给锚点会话管理网元。其中，中间会话管理网元可以通过会话建立流程将第一CN PDB列表发送给锚点会话管理网元。可选的，该第二消息可以是会话创建请求消息(例如：Nsmf_PDUSession_Create Request)。Further, the intermediate session management network element may send the first CN PDB list to the anchor session management network element through a second message. The intermediate session management network element may send the first CN PDB list to the anchor session management network element through the session establishment process. Optionally, the second message may be a session creation request message (for example: Nsmf_PDUSession_Create Request).
相应的，锚点会话管理网元接收该第一CN PDB列表，在锚点会话管理网元从PCF获取到与会话关联的策略时，可以确定该会话包含的QoS流的5QI。锚点会话管理网元进一步根据QoS流的5QI，从第一CN PDB列表中确定QoS流对应的第一CN PDB。Correspondingly, the anchor session management network element receives the first CN PDB list, and when the anchor session management network element obtains the policy associated with the session from the PCF, it can determine the 5QI of the QoS flow included in the session. The anchor session management network element further determines the first CN PDB corresponding to the QoS flow from the first CN PDB list based on the 5QI of the QoS flow.
具体的，以第一CN PDB为N3 CN PDB，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，接入网设备为RAN，中间用户面网元为I-UPF，I-SMF上配置的第一CN PDB配置信息为表格四作为举例。如果QoS流的用户面连接经过RAN2和I-UPF1，由于未获取到QoS流的5QI，因此，I-SMF根据QoS流的用户面连接经过RAN2和I-UPF1，从表格四中确定RAN2和I-UPF1拓扑组合对应的第一CN PDB列表，该第一CN PDB列表包括5QI1与N3 CN PDB2的对应关系和5QI2与N3 CN PDB3的对应关系。I-SMF可以通过会话创建请求消息将该第一CN PDB列表发送给SMF。在SMF从PCF获取到与会话关联的策略时，如果确定该会话包含的QoS流的5QI为5QI1，则可以从该第一CN PDB列表中确定QoS流对应的N3 CN PDB为N3 CN PDB2。Specifically, the first CN PDB is the N3 CN PDB, the intermediate session management network element is the I-SMF, the anchor session management network element is the SMF, the access network equipment is the RAN, and the intermediate user plane network element is the I-UPF. -The first CN PDB configuration information configured on the SMF is Table 4 as an example. If the user plane connection of the QoS flow passes through RAN2 and I-UPF1, since the 5QI of the QoS flow is not obtained, I-SMF determines RAN2 and I from Table 4 based on the user plane connection of the QoS flow through RAN2 and I-UPF1. -The first CN PDB list corresponding to the UPF1 topology combination. The first CN PDB list includes the corresponding relationship between 5QI1 and N3 CN PDB2 and the corresponding relationship between 5QI2 and N3 CN PDB3. The I-SMF may send the first CN PDB list to the SMF through a session creation request message. When the SMF obtains the policy associated with the session from the PCF, if it is determined that the 5QI of the QoS flow contained in the session is 5QI1, it can determine from the first CN PDB list that the N3 CN PDB corresponding to the QoS flow is N3 CN PDB2.
S302，锚点会话管理网元获取QoS流对应的第二CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，其中，所述锚点会话管理网元与所述锚点用户面网元相连。S302: The anchor session management network element obtains the second CN PDB corresponding to the QoS flow. The second CN PDB is the CN PDB between the intermediate user plane network element and the anchor user plane network element, wherein the anchor The point session management network element is connected to the anchor user plane network element.
在一个实施例中，锚点会话管理网元可以根据QoS流的用户面连接所经过的中间用户面网元和锚点用户面网元的拓扑组合、QoS流的5QI以及配置在锚点会话管理网元上的第二CN PDB配置信息，确定QoS流对应的第二CN PDB。例如，锚点会话管理网元从第二CNPDB配置信息中选择该拓扑组合、QoS流的5QI对应的第二CN PDB，作为QoS流对应的第二CNPDB。In one embodiment, the anchor session management network element can be based on the topological combination of the intermediate user plane network element and the anchor user plane network element through which the user plane connection of the QoS flow passes, the 5QI of the QoS flow, and the configuration in the anchor session management The second CN PDB configuration information on the network element determines the second CN PDB corresponding to the QoS flow. For example, the anchor session management network element selects the second CN PDB corresponding to the topology combination and the 5QI of the QoS flow from the second CNPDB configuration information as the second CNPDB corresponding to the QoS flow.
具体的，以第二CN PDB为N9 CN PDB，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，中间用户面网元为I-UPF，锚点用户面网元为UPF，SMF上配置的第二CN PDB配置信息为表格五作为举例。如果QoS流的用户面连接经过I-UPF1和UPF1，且QoS流的5QI为5QI2，则确定QoS流对应N9 CN PDB2。Specifically, the second CN PDB is the N9 CN PDB, the intermediate session management network element is I-SMF, the anchor session management network element is SMF, the intermediate user plane network element is I-UPF, and the anchor user plane network element is UPF. , the second CN PDB configuration information configured on the SMF is in Table 5 as an example. If the user plane connection of the QoS flow passes through I-UPF1 and UPF1, and the 5QI of the QoS flow is 5QI2, it is determined that the QoS flow corresponds to N9 CN PDB2.
S303，锚点会话管理网元根据QoS流对应的第一CN PDB和QoS流对应的第二CNPDB，确定QoS流对应的CN PDB。S303: The anchor session management network element determines the CN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow and the second CNPDB corresponding to the QoS flow.
在一个实施例中，QoS流对应的CN PDB等于QoS流对应的第一CN PDB和QoS流对应的第二CN PDB之和。例如，QoS流对应的第一CN PDB为N3 CN PDB3，QoS流对应的第二CN PDB为N9 CN PDB2，则QoS流对应的CN PDB等于N3 CN PDB3和N9 CN PDB2之和。In one embodiment, the CN PDB corresponding to the QoS flow is equal to the sum of the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow. For example, the first CN PDB corresponding to the QoS flow is N3 CN PDB3, and the second CN PDB corresponding to the QoS flow is N9 CN PDB2, then the CN PDB corresponding to the QoS flow is equal to the sum of N3 CN PDB3 and N9 CN PDB2.
可选的，还可以包括步骤S304和S305。Optionally, steps S304 and S305 may also be included.
S304，锚点会话管理网元将QoS流对应的CN PDB发送给接入网设备。S304: The anchor session management network element sends the CN PDB corresponding to the QoS flow to the access network device.
S305，接入网设备根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。S305: The access network device determines the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow.
在一个实施例中，锚点会话管理网元可以通过会话建立流程中的会话创建响应消息(例如：Nsmf_PDUSession_Create Response)将QoS流对应的CN PDB发送给中间会话管理网元。可选的，QoS流对应的CN PDB可以被包含在会话创建响应消息中的QoS文档(QoSprofile)中。或者，锚点会话管理网元也可以通过会话修改流程、Xn或N2切换流程或服务请求流程中的会话更新响应消息(例如：Nsmf_PDUSession_Update Response)将QoS流对应的CN PDB发送给中间会话管理网元。In one embodiment, the anchor session management network element can send the CN PDB corresponding to the QoS flow to the intermediate session management network element through the session creation response message (for example: Nsmf_PDUSession_Create Response) in the session establishment process. Optionally, the CN PDB corresponding to the QoS flow may be included in the QoS profile (QoSprofile) in the session creation response message. Alternatively, the anchor session management network element can also send the CN PDB corresponding to the QoS flow to the intermediate session management network element through the session update response message (for example: Nsmf_PDUSession_Update Response) in the session modification process, Xn or N2 handover process or service request process. .
中间会话管理网元可以将QoS流对应的CN PDB发送给接入网设备。接入网设备可以根据QoS流的5QI，获取QoS流对应的PDB。进一步，接入网设备根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。The intermediate session management network element can send the CN PDB corresponding to the QoS flow to the access network device. The access network device can obtain the PDB corresponding to the QoS flow based on the 5QI of the QoS flow. Further, the access network device determines the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow.
结合图6，对图5所示的方法进行更详细的介绍。为便于理解，图6中以终端设备为UE，移动管理网元为AMF，接入网设备为RAN，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，中间用户面网元为I-UPF，锚点用户面网元为UPF为例进行说明。Combined with Figure 6, the method shown in Figure 5 is introduced in more detail. For ease of understanding, in Figure 6, the terminal device is UE, the mobility management network element is AMF, the access network device is RAN, the intermediate session management network element is I-SMF, the anchor session management network element is SMF, and the intermediate user plane network The network element is I-UPF and the anchor user plane network element is UPF. This is explained as an example.
示例性的，I-SMF上配置的第一CN PDB配置信息可以如表格四所示。SMF上配置的第二CN PDB配置信息可以如表格五所示。For example, the first CN PDB configuration information configured on the I-SMF may be as shown in Table 4. The second CN PDB configuration information configured on the SMF can be as shown in Table 5.
S401，UE向AMF发送会话建立请求消息，其中，该会话建立请求消息可以是包含在上行非接入层(non-access stratum，NAS)传输消息中，该NAS传输消息还可以包括UE ID、PDU会话标识。S401. The UE sends a session establishment request message to the AMF. The session establishment request message may be included in an uplink non-access stratum (NAS) transmission message. The NAS transmission message may also include the UE ID and PDU. Session ID.
S402，AMF选择I-SMF和SMF。AMF向I-SMF发送创建会话管理上下文请求消息，该创建会话管理上下文请求消息包括UE ID、PDU会话标识、会话建立请求消息、SMF ID。该创建会话管理上下文请求消息可以对应到服务化接口Nsmf_PDUSession_CreateSMContextrequest。S402, AMF selects I-SMF and SMF. The AMF sends a create session management context request message to the I-SMF. The create session management context request message includes the UE ID, PDU session identification, session establishment request message, and SMF ID. The create session management context request message may correspond to the service interface Nsmf_PDUSession_CreateSMContextrequest.
S403，I-SMF向AMF发送创建会话管理上下文响应消息。该创建会话管理上下文响应消息可以对应到服务化接口Nsmf_PDUSession_CreateSMContext response。S403, I-SMF sends a create session management context response message to AMF. The create session management context response message may correspond to the service interface Nsmf_PDUSession_CreateSMContext response.
S404，I-SMF选择I-UPF；该I-SMF向选择的I-UPF发起N4会话创建过程。S404, the I-SMF selects the I-UPF; the I-SMF initiates the N4 session creation process to the selected I-UPF.
S405，I-SMF向SMF发送会话创建请求消息，该会话创建请求消息包括UE ID、I-SMFID、所选择的I-UPF ID、PDU会话标识以及N3 CN PDB列表，该N3 CN PDB列表可以是I-SMF根据QoS流的用户面连接所经过的RAN和I-UPF确定的。例如，I-SMF从表格四中选择QoS流的用户面连接所经过的RAN和I-UPF的拓扑组合对应的N3 CN PDB列表。S405, I-SMF sends a session creation request message to SMF. The session creation request message includes UE ID, I-SMFID, selected I-UPF ID, PDU session identifier, and N3 CN PDB list. The N3 CN PDB list can be I-SMF is determined based on the RAN and I-UPF passed by the user plane connection of the QoS flow. For example, I-SMF selects from Table 4 the N3 CN PDB list corresponding to the topological combination of RAN and I-UPF that the user plane connection of the QoS flow passes through.
该会话创建请求消息可以对应到服务化接口Nsmf_PDUSession_Create request。The session creation request message can correspond to the service interface Nsmf_PDUSession_Create request.
S406，SMF向PCF发起会话管理策略关联建立流程，以获取该会话关联的策略。SMF根据会话关联的策略中获取会话包含的QoS流的5QI。可以理解的是，该会话可以包括至少一个QoS流，该SMF可以分别获取该至少一个QoS流中一个或多个QoS流的5QI。S406: The SMF initiates a session management policy association establishment process to the PCF to obtain the policy associated with the session. SMF obtains the 5QI of the QoS flow included in the session based on the policy associated with the session. It can be understood that the session may include at least one QoS flow, and the SMF may respectively obtain the 5QI of one or more QoS flows in the at least one QoS flow.
S407，SMF根据QoS流的5QI从N3 CN PDB列表中选择该QoS流对应的N3 CN PDB。S407: The SMF selects the N3 CN PDB corresponding to the QoS flow from the N3 CN PDB list according to the 5QI of the QoS flow.
S408，SMF选择UPF，并向该选择的UPF发起N4会话创建过程。S408: The SMF selects a UPF and initiates an N4 session creation process to the selected UPF.
S409，SMF根据QoS流的用户面连接所经过的I-UPF和UPF拓扑组合、QoS流的5QI，确定QoS流对应的N9 CN PDB。例如，SMF从表格五中选择QoS流的用户面连接所经过的I-UPF和UPF的拓扑组合和QoS流的5QI对应的N9 CN PDB。S409: The SMF determines the N9 CN PDB corresponding to the QoS flow based on the I-UPF and UPF topology combination passed by the user plane connection of the QoS flow and the 5QI of the QoS flow. For example, SMF selects the topological combination of I-UPF and UPF through which the user plane connection of the QoS flow passes and the N9 CN PDB corresponding to the 5QI of the QoS flow from Table 5.
进一步，SMF根据QoS流对应的N3 CN PDB和QoS流对应的N9 CN PDB，确定QoS流对应的CN PDB。Further, SMF determines the CN PDB corresponding to the QoS flow based on the N3 CN PDB corresponding to the QoS flow and the N9 CN PDB corresponding to the QoS flow.
其中，CN PDB＝N3 CN PDB+N9 CN PDB。Among them, CN PDB=N3 CN PDB+N9 CN PDB.
S410，SMF向I-SMF发送会话创建响应消息，该会话创建响应消息包括QoS流的QoS规则、QoS流的QoS文档、QoS流的QoS流标识以及QoS流对应的CN PDB。可选的，QoS流对应的CN PDB也可以包含在QoS流的QoS文档中。S410. The SMF sends a session creation response message to the I-SMF. The session creation response message includes the QoS rules of the QoS flow, the QoS document of the QoS flow, the QoS flow identifier of the QoS flow, and the CN PDB corresponding to the QoS flow. Optionally, the CN PDB corresponding to the QoS flow can also be included in the QoS document of the QoS flow.
S411，I-SMF向AMF发送N1N2消息传输请求，该N1N2消息传输请求携带PDU会话标识、N2 SM信息、N1 SM信息。其中，N1 SM信息是指I-SMF发送给UE的与会话相关的信息，N2SM信息是指I-SMF发送给RAN的关于会话的信息。S411. The I-SMF sends an N1N2 message transmission request to the AMF. The N1N2 message transmission request carries the PDU session identifier, N2 SM information, and N1 SM information. Among them, the N1 SM information refers to the session-related information sent by the I-SMF to the UE, and the N2SM information refers to the session-related information sent by the I-SMF to the RAN.
其中，N1N2消息传输请求还可以包括QoS流对应的CN PDB。示例性的，N2 SM信息可以包括QoS流对应的CN PDB。Among them, the N1N2 message transmission request may also include the CN PDB corresponding to the QoS flow. For example, the N2 SM information may include the CN PDB corresponding to the QoS flow.
N2 SM信息还可以包括会话标识、QoS流对应的QoS流标识、QoS流对应的QoS文档等。N1 SM信息可以包括QoS流对应的QoS规则。The N2 SM information may also include a session identifier, a QoS flow identifier corresponding to the QoS flow, a QoS document corresponding to the QoS flow, etc. N1 SM information may include QoS rules corresponding to the QoS flow.
S412，AMF向RAN发送N2 PDU会话请求，该N2 PDU会话请求包括N2 SM信息、NAS消息。其中NAS消息包含N1 SM信息。S412. The AMF sends an N2 PDU session request to the RAN. The N2 PDU session request includes N2 SM information and NAS messages. The NAS message contains N1 SM information.
S413，会话建立流程的其他步骤。例如空口资源建立、核心网用户面路径更新等。S413, other steps of the session establishment process. For example, air interface resource establishment, core network user plane path update, etc.
可以理解的是，上述各个步骤的执行顺序本申请不作限定。It can be understood that the execution order of each of the above steps is not limited in this application.
请参照图7，为本申请实施例提供的一种QoS流控制方法的流程示意图，本实施例涉及的是在包括中间会话管理网元和锚点会话管理网元的通信系统中，由中间会话管理网元确定CN PDB的场景，如图7所示，该方法可以包括：S501、S502、S503，可选的，还可以包括S504和S505。其中，S501、S502、S503、S504和S505的执行顺序，本申请实施例不作限制。如图所示，本申请实施例的QoS流控制方法包括但不限于以下步骤：Please refer to Figure 7, which is a schematic flow chart of a QoS flow control method provided by an embodiment of the present application. This embodiment relates to a communication system including an intermediate session management network element and an anchor session management network element. The scenario where the management network element determines the CN PDB is as shown in Figure 7. The method may include: S501, S502, S503, and optionally, S504 and S505. The execution order of S501, S502, S503, S504 and S505 is not limited by the embodiment of this application. As shown in the figure, the QoS flow control method in this embodiment of the present application includes but is not limited to the following steps:
S501，锚点会话管理网元将QoS流对应的第二CN PDB发送给中间会话管理网元。S501: The anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element.
在一个实施例中，锚点会话管理网元可以根据QoS流的用户面连接所经过的中间用户面网元和锚点用户面网元的拓扑组合、QoS流的5QI以及配置在锚点会话管理网元上的第二CN PDB配置信息，确定QoS流对应的第二CN PDB。例如，锚点会话管理网元从第二CNPDB配置信息中选择该拓扑组合、QoS流的5QI对应的第二CN PDB，作为QoS流对应的第二CNPDB。其中，QoS流的5QI可以是锚点会话管理网元从会话关联的策略中获取的。In one embodiment, the anchor session management network element can be based on the topological combination of the intermediate user plane network element and the anchor user plane network element through which the user plane connection of the QoS flow passes, the 5QI of the QoS flow, and the configuration in the anchor session management The second CN PDB configuration information on the network element determines the second CN PDB corresponding to the QoS flow. For example, the anchor session management network element selects the second CN PDB corresponding to the topology combination and the 5QI of the QoS flow from the second CNPDB configuration information as the second CNPDB corresponding to the QoS flow. Among them, the 5QI of the QoS flow can be obtained by the anchor session management network element from the policy associated with the session.
进一步，锚点会话管理网元将QoS流对应的第二CN PDB发送给中间会话管理网元。可选的，锚点会话管理网元可以在会话建立流程、或会话修改流程、或HO流程、或服务请求流程中通过第三消息将QoS流对应的第二CN PDB发送给中间会话管理网元。示例性的，如果锚点会话管理网元是通过会话建立流程将QoS流对应的第二CN PDB发送给中间会话管理网元，则第三消息可以是会话创建响应消息(例如：Nsmf_PDUSession_Create Response)。如果锚点会话管理网元是通过其他流程将QoS流对应的第二CN PDB发送给中间会话管理网元，则第三消息可以是会话更新响应消息(例如：Nsmf_PDUSession_Update Response)。Further, the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element. Optionally, the anchor session management network element may send the second CN PDB corresponding to the QoS flow to the intermediate session management network element through a third message during the session establishment process, session modification process, HO process, or service request process. . For example, if the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element through the session establishment process, the third message may be a session creation response message (for example: Nsmf_PDUSession_Create Response). If the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element through other processes, the third message may be a session update response message (for example: Nsmf_PDUSession_Update Response).
可选的，第二CN PDB可以是包含在QoS文档中发送给中间会话管理网元。中间会话管理网元通过解析QoS文档获取到第二CN PDB。Optionally, the second CN PDB may be included in the QoS document and sent to the intermediate session management network element. The intermediate session management network element obtains the second CN PDB by parsing the QoS document.
具体的，以第二CN PDB为N9 CN PDB，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，中间用户面网元为I-UPF，锚点用户面网元为UPF，SMF上配置的第二CN PDB配置信息为表格五作为举例。如果QoS流的用户面连接经过I-UPF1和UPF1，且QoS流的5QI为5QI2，则SMF确定QoS流对应N9 CN PDB2，并将N9 CN PDB2发送给I-SMF。Specifically, the second CN PDB is the N9 CN PDB, the intermediate session management network element is I-SMF, the anchor session management network element is SMF, the intermediate user plane network element is I-UPF, and the anchor user plane network element is UPF. , the second CN PDB configuration information configured on the SMF is in Table 5 as an example. If the user plane connection of the QoS flow passes through I-UPF1 and UPF1, and the 5QI of the QoS flow is 5QI2, the SMF determines that the QoS flow corresponds to N9 CN PDB2, and sends N9 CN PDB2 to I-SMF.
S502，中间会话管理网元获取QoS流对应的第一CN PDB。S502: The intermediate session management network element obtains the first CN PDB corresponding to the QoS flow.
在一个实施例中，中间会话管理网元可以根据QoS流的用户面连接所经过的接入网设备和中间用户面网元的拓扑组合、QoS流的5QI以及配置在中间会话管理网元上的第一CN PDB配置信息，确定QoS流对应的第一CN PDB。例如，中间会话管理网元从第一CN PDB配置信息中选择该拓扑组合、QoS流的5QI对应的第一CN PDB，作为QoS流对应的第一CN PDB。其中，中间会话管理网元获取QoS流的5QI可以是在会话建立流程中获取到的。例如，锚点会话管理网元可以通过会话建立流程中的会话创建响应消息将QoS流的5QI发送给中间会话管理网元。In one embodiment, the intermediate session management network element can be configured according to the topological combination of the access network device and the intermediate user plane network element through which the user plane connection of the QoS flow passes, the 5QI of the QoS flow, and the 5QI configured on the intermediate session management network element. The first CN PDB configuration information determines the first CN PDB corresponding to the QoS flow. For example, the intermediate session management network element selects the first CN PDB corresponding to the topology combination and the 5QI of the QoS flow from the first CN PDB configuration information as the first CN PDB corresponding to the QoS flow. The intermediate session management network element obtains the 5QI of the QoS flow during the session establishment process. For example, the anchor session management network element can send the 5QI of the QoS flow to the intermediate session management network element through the session creation response message in the session establishment process.
具体的，以第一CN PDB为N3 CN PDB，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，接入网设备为RAN，中间用户面网元为I-UPF，I-SMF上配置的第一CN PDB配置信息为表格四作为举例。如果QoS流的用户面连接经过RAN2和I-UPF1，且QoS流的5QI为5QI2，则确定QoS流对应N3 CN PDB3。Specifically, the first CN PDB is the N3 CN PDB, the intermediate session management network element is the I-SMF, the anchor session management network element is the SMF, the access network equipment is the RAN, and the intermediate user plane network element is the I-UPF. -The first CN PDB configuration information configured on the SMF is Table 4 as an example. If the user plane connection of the QoS flow passes through RAN2 and I-UPF1, and the 5QI of the QoS flow is 5QI2, it is determined that the QoS flow corresponds to N3 CN PDB3.
S503，中间会话管理网元根据QoS流对应的第一CN PDB和QoS流对应的第二CNPDB，确定QoS流对应的CN PDB。S503: The intermediate session management network element determines the CN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow and the second CNPDB corresponding to the QoS flow.
在一个实施例中，QoS流对应的CN PDB等于QoS流对应的第一CN PDB和QoS流对应的第二CN PDB之和。例如，QoS流对应的第一CN PDB为N3 CN PDB3，QoS流对应的第二CN PDB为N9 CN PDB2，则QoS流对应的CN PDB等于N3 CN PDB3和N9 CN PDB2之和。In one embodiment, the CN PDB corresponding to the QoS flow is equal to the sum of the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow. For example, the first CN PDB corresponding to the QoS flow is N3 CN PDB3, and the second CN PDB corresponding to the QoS flow is N9 CN PDB2, then the CN PDB corresponding to the QoS flow is equal to the sum of N3 CN PDB3 and N9 CN PDB2.
可选的，还可以包括步骤S504和S505。Optionally, steps S504 and S505 may also be included.
S504，中间会话管理网元将QoS流对应的CN PDB发送给接入网设备。S504: The intermediate session management network element sends the CN PDB corresponding to the QoS flow to the access network device.
S505，接入网设备根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。S505: The access network device determines the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow.
在一个实施例中，中间会话管理网元可以将QoS流对应的CN PDB发送给接入网设备，例如，中间会话管理网元通过N1N2消息传输请求中的N2 SM信息将CN PDB发送给接入网设备。可选的，中间会话管理网元可以将CN PDB包含在QoS文档中发送给接入网设备。In one embodiment, the intermediate session management network element can send the CN PDB corresponding to the QoS flow to the access network device. For example, the intermediate session management network element sends the CN PDB to the access network device through the N2 SM information in the N1N2 message transmission request. network equipment. Optionally, the intermediate session management network element can include the CN PDB in the QoS document and send it to the access network device.
接入网设备可以根据QoS流的5QI，获取QoS流对应的PDB。进一步，接入网设备根据QoS流对应的PDB和QoS流对应的CN PDB，确定QoS流对应的AN PDB。The access network device can obtain the PDB corresponding to the QoS flow based on the 5QI of the QoS flow. Further, the access network device determines the AN PDB corresponding to the QoS flow based on the PDB corresponding to the QoS flow and the CN PDB corresponding to the QoS flow.
结合图8，对图7所示的方法进行更详细的介绍。为便于理解，图8中以终端设备为UE，移动管理网元为AMF，接入网设备为RAN，中间会话管理网元为I-SMF，锚点会话管理网元为SMF为例进行说明，中间用户面网元为I-UPF，锚点用户面网元为UPF为例进行说明。Combined with Figure 8, the method shown in Figure 7 is introduced in more detail. For ease of understanding, Figure 8 takes the terminal device as UE, the mobility management network element as AMF, the access network device as RAN, the intermediate session management network element as I-SMF, and the anchor session management network element as SMF as an example for illustration. The intermediate user plane network element is I-UPF, and the anchor user plane network element is UPF. This is explained as an example.
示例性的，I-SMF上配置的第一CN PDB配置信息可以如表格四所示。SMF上配置的第二CN PDB配置信息可以如表格五所示。For example, the first CN PDB configuration information configured on the I-SMF may be as shown in Table 4. The second CN PDB configuration information configured on the SMF can be as shown in Table 5.
S601，UE向AMF发送会话建立请求消息。S601. The UE sends a session establishment request message to the AMF.
S602，AMF选择I-SMF和SMF。AMF向I-SMF发送创建会话管理上下文请求消息。S602, AMF selects I-SMF and SMF. AMF sends a create session management context request message to I-SMF.
S603，I-SMF向AMF发送创建会话管理上下文响应消息。S603, I-SMF sends a create session management context response message to AMF.
S604，I-SMF选择I-UPF；该I-SMF向选择的I-UPF发起N4会话创建过程。S604, the I-SMF selects the I-UPF; the I-SMF initiates the N4 session creation process to the selected I-UPF.
其中，步骤S601-步骤S604请参照图6实施例的步骤S401-步骤S404，在此不再赘述。For steps S601 to S604, please refer to steps S401 to S404 in the embodiment of FIG. 6 , which will not be described again here.
S605，I-SMF向SMF发送会话创建请求消息，该会话创建请求消息包括UE ID、I-SMFID、所选择的I-UPF ID、PDU会话标识。S605. The I-SMF sends a session creation request message to the SMF. The session creation request message includes the UE ID, I-SMFID, the selected I-UPF ID, and the PDU session identifier.
该会话创建请求消息对应到服务化接口Nsmf_PDUSession_Create request。The session creation request message corresponds to the service interface Nsmf_PDUSession_Create request.
S606，SMF向PCF发起会话管理策略关联建立流程，以获取该会话关联的策略。SMF根据会话关联的策略中获取会话包含的QoS流的5QI。可以理解的是，该会话可以包括至少一个QoS流，该SMF可以分别获取该至少一个QoS流中一个或多个QoS流的5QI。S606: The SMF initiates a session management policy association establishment process to the PCF to obtain the policy associated with the session. SMF obtains the 5QI of the QoS flow included in the session based on the policy associated with the session. It can be understood that the session may include at least one QoS flow, and the SMF may respectively obtain the 5QI of one or more QoS flows in the at least one QoS flow.
S607，SMF选择UPF，并向该选择的UPF发起N4会话创建过程。SMF根据QoS流的用户面连接所经过的I-UPF和UPF拓扑组合、QoS流的5QI，确定QoS流对应的N9 CN PDB。例如，SMF从表格五中选择QoS流的用户面连接所经过的I-UPF和UPF的拓扑组合和QoS流的5QI对应的N9 CN PDB。S607: The SMF selects a UPF and initiates an N4 session creation process to the selected UPF. SMF determines the N9 CN PDB corresponding to the QoS flow based on the I-UPF and UPF topology combination passed by the user plane connection of the QoS flow and the 5QI of the QoS flow. For example, SMF selects the topological combination of I-UPF and UPF through which the user plane connection of the QoS flow passes and the N9 CN PDB corresponding to the 5QI of the QoS flow from Table 5.
S608，SMF向I-SMF发送会话创建响应消息，该会话创建响应消息包括QoS流的QoS规则、QoS流的QoS文档、QoS流的QoS流标识、QoS流的5QI以及QoS流对应的N9 CN PDB。可选的，QoS流对应的N9 CN PDB也可以包含在QoS流的QoS文档中，如果N9 CN PDB包含在QoS文档中，则I-SMF可以解析该QoS文档，从而获得QoS流对应的N9 CN PDB。其中，QoS流的5QI也可以被包含在QoS流的QoS文档中，I-SMF可以解析该QoS文档，从而获得QoS流的5QI。S608. The SMF sends a session creation response message to the I-SMF. The session creation response message includes the QoS rules of the QoS flow, the QoS document of the QoS flow, the QoS flow identifier of the QoS flow, the 5QI of the QoS flow, and the N9 CN PDB corresponding to the QoS flow. . Optionally, the N9 CN PDB corresponding to the QoS flow can also be included in the QoS document of the QoS flow. If the N9 CN PDB is included in the QoS document, I-SMF can parse the QoS document to obtain the N9 CN corresponding to the QoS flow. PDB. Among them, the 5QI of the QoS flow can also be included in the QoS document of the QoS flow, and I-SMF can parse the QoS document to obtain the 5QI of the QoS flow.
S609，I-SMF根据QoS流的用户面连接所经过的RAN和I-UPF拓扑组合、QoS流的5QI，确定QoS流对应的N3 CN PDB。例如，I-SMF从表格四中选择QoS流的用户面连接所经过的RAN和I-UPF的拓扑组合和QoS流的5QI对应的N3 CN PDB。S609: The I-SMF determines the N3 CN PDB corresponding to the QoS flow based on the RAN and I-UPF topology combination passed by the user plane connection of the QoS flow and the 5QI of the QoS flow. For example, I-SMF selects the topological combination of RAN and I-UPF through which the user plane connection of the QoS flow passes and the N3 CN PDB corresponding to the 5QI of the QoS flow from Table 4.
进一步，I-SMF根据QoS流对应的N3 CN PDB和QoS流对应的N9 CN PDB，确定QoS流对应的CN PDB。Further, the I-SMF determines the CN PDB corresponding to the QoS flow based on the N3 CN PDB corresponding to the QoS flow and the N9 CN PDB corresponding to the QoS flow.
其中，CN PDB＝N3 CN PDB+N9 CN PDB。Among them, CN PDB=N3 CN PDB+N9 CN PDB.
S610，I-SMF向AMF发送N1N2消息传输请求。S610. The I-SMF sends an N1N2 message transmission request to the AMF.
S611，AMF向RAN发送N2 PDU会话请求。S611. The AMF sends an N2 PDU session request to the RAN.
可选的，I-SMF可以将QoS流对应的CN PDB包含在QoS文档中发送给RAN。Optionally, I-SMF can include the CN PDB corresponding to the QoS flow in the QoS document and send it to the RAN.
S612，会话建立流程的其他步骤。例如空口资源建立、核心网用户面路径更新等。S612, other steps of the session establishment process. For example, air interface resource establishment, core network user plane path update, etc.
其中，步骤S610-步骤S612请参照图6实施例的步骤S411-步骤S413，在此不再赘述。For steps S610 to S612, please refer to steps S411 to S413 in the embodiment of FIG. 6 , which will not be described again here.
可以理解的是，上述各个步骤的执行顺序本申请不作限定。It can be understood that the execution order of each of the above steps is not limited in this application.
请参照图9，为本申请实施例提供的一种QoS流控制方法的流程示意图，本实施例涉及的是在包括中间会话管理网元和锚点会话管理网元的通信系统中，接入网设备分别根据来自中间会话管理网元的第一CN PDB和来自锚点会话管理网元的第二CN PDB，确定ANPDB的场景。如图9所示，该方法可以包括：S701、S702、S703和S704。其中，S701、S702、S703和S704的执行顺序，本申请实施例不作限制。如图所示，本申请实施例的QoS流控制方法包括但不限于以下步骤：Please refer to Figure 9, which is a schematic flow chart of a QoS flow control method provided by an embodiment of the present application. This embodiment relates to an access network in a communication system including an intermediate session management network element and an anchor session management network element. The device determines the ANPDB scenario based on the first CN PDB from the intermediate session management network element and the second CN PDB from the anchor session management network element. As shown in Figure 9, the method may include: S701, S702, S703 and S704. The execution order of S701, S702, S703 and S704 is not limited by the embodiment of this application. As shown in the figure, the QoS flow control method in this embodiment of the present application includes but is not limited to the following steps:
S701，中间会话管理网元将QoS流对应的第一CN PDB发送给接入网设备。S701. The intermediate session management network element sends the first CN PDB corresponding to the QoS flow to the access network device.
S702，锚点会话管理网元将QoS流对应的第二CN PDB发送给接入网设备。S702: The anchor session management network element sends the second CN PDB corresponding to the QoS flow to the access network device.
在一个实施例中，锚点会话管理网元可以通过中间会话管理网元将QoS流对应的第二CN PDB发送给接入网设备。In one embodiment, the anchor session management network element may send the second CN PDB corresponding to the QoS flow to the access network device through the intermediate session management network element.
示例性的，锚点会话管理网元确定QoS流对应的第一CN PDB，并将QoS流对应的第二CN PDB发送给中间会话管理网元。中间会话管理网元确定QoS流对应的第二CN PDB，并将QoS流对应的第一CN PDB和QoS流对应的第二CN PDB发送给接入网设备。Exemplarily, the anchor session management network element determines the first CN PDB corresponding to the QoS flow, and sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element. The intermediate session management network element determines the second CN PDB corresponding to the QoS flow, and sends the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow to the access network device.
可选的，锚点会话管理网元确定QoS流对应的第一CN PDB的确定方法可以参照图5实施例中S302的描述，中间会话管理网元确定QoS流对应的第二CN PDB的确定方法可以参照图7实施例中S502的描述，在此不再赘述。Optionally, the method for the anchor session management network element to determine the first CN PDB corresponding to the QoS flow may refer to the description of S302 in the embodiment of Figure 5, and the method for the intermediate session management network element to determine the second CN PDB corresponding to the QoS flow. Reference may be made to the description of S502 in the embodiment of FIG. 7 , which will not be described again here.
可选的，锚点会话管理网元可以在会话建立流程、或会话修改流程、或HO流程、或服务请求流程中通过第四消息将QoS流对应的第二CN PDB发送给中间会话管理网元。如果锚点会话管理网元是通过会话建立流程将QoS流对应的第二CN PDB发送给中间会话管理网元，则第四消息可以是会话创建响应消息(例如：Nsmf_PDUSession_Create Response)；如果锚点会话管理网元是通过其他流程将QoS流对应的第二CN PDB发送给中间会话管理网元，则第四消息可以是会话更新响应消息(例如：Nsmf_PDUSession_Update Response)。Optionally, the anchor session management network element may send the second CN PDB corresponding to the QoS flow to the intermediate session management network element through the fourth message during the session establishment process, session modification process, HO process, or service request process. . If the anchor session management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element through the session establishment process, the fourth message may be a session creation response message (for example: Nsmf_PDUSession_Create Response); if the anchor session The management network element sends the second CN PDB corresponding to the QoS flow to the intermediate session management network element through other processes, and the fourth message may be a session update response message (for example: Nsmf_PDUSession_Update Response).
相应的，中间会话管理网元也可以是在会话建立流程、或会话修改流程、或HO流程、或服务请求流程中通过第五消息将QoS流对应的第一CN PDB和QoS流对应的第二CN PDB发送给接入及移动管理设备，并由接入及移动管理设备通过第六消息将QoS流对应的第一CN PDB和QoS流对应的第二CN PDB发送给接入网设备。可选的，第五消息可以是N1N2传输请求，第六消息可以是N2 PDU会话请求。Correspondingly, the intermediate session management network element may also use the fifth message in the session establishment process, or session modification process, or HO process, or service request process to combine the first CN PDB corresponding to the QoS flow and the second corresponding QoS flow. The CN PDB is sent to the access and mobility management device, and the access and mobility management device sends the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow to the access network device through the sixth message. Optionally, the fifth message may be an N1N2 transmission request, and the sixth message may be an N2 PDU session request.
可以理解的是，中间会话管理网元也可以分别通过不同的消息将QoS流对应的第一CN PDB和QoS流对应的第二CN PDB发送给接入网设备，本申请实施例不作限定。It can be understood that the intermediate session management network element can also send the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow to the access network device through different messages, which are not limited in the embodiments of this application.
S703，接入网设备确定QoS流对应的PDB。S703: The access network device determines the PDB corresponding to the QoS flow.
在一个实施例中，接入网设备可以根据QoS流的5QI，确定QoS流对应的PDB。In one embodiment, the access network device can determine the PDB corresponding to the QoS flow based on the 5QI of the QoS flow.
S704，接入网设备根据QoS流对应的第一CN PDB、QoS流对应的第二CN PDB和QoS流对应的PDB，确定QoS流对应的AN PDB。S704: The access network device determines the AN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow, the second CN PDB corresponding to the QoS flow, and the PDB corresponding to the QoS flow.
在一个实施例中，QoS流对应的AN PDB等于QoS流对应的PDB减去QoS流对应的第一CN PDB，并减去QoS流对应的第二CN PDB得到的值。例如，例如，QoS流对应的第一CN PDB为N3 CN PDB3，QoS流对应的第二CN PDB为N9 CN PDB2，则AN PDB＝PDB-N3CN PDB3-N9 CNPDB2。In one embodiment, the AN PDB corresponding to the QoS flow is equal to the value obtained by subtracting the first CN PDB corresponding to the QoS flow from the PDB corresponding to the QoS flow and subtracting the second CN PDB corresponding to the QoS flow. For example, if the first CN PDB corresponding to the QoS flow is N3 CN PDB3, and the second CN PDB corresponding to the QoS flow is N9 CN PDB2, then AN PDB=PDB-N3CN PDB3-N9 CNPDB2.
结合图10，对图9所示的方法进行更详细的介绍。为便于理解，图10中以终端设备为UE，移动管理网元为AMF，接入网设备为RAN，中间会话管理网元为I-SMF，锚点会话管理网元为SMF，中间用户面网元为I-UPF，锚点用户面网元为UPF为例进行说明。Combined with Figure 10, the method shown in Figure 9 is introduced in more detail. For ease of understanding, in Figure 10, the terminal device is UE, the mobility management network element is AMF, the access network device is RAN, the intermediate session management network element is I-SMF, the anchor session management network element is SMF, and the intermediate user plane network The network element is I-UPF and the anchor user plane network element is UPF. This is explained as an example.
示例性的，I-SMF上配置的第一CN PDB配置信息可以如表格四所示。SMF上配置的第二CN PDB配置信息可以如表格五所示。For example, the first CN PDB configuration information configured on the I-SMF may be as shown in Table 4. The second CN PDB configuration information configured on the SMF can be as shown in Table 5.
S801，UE向AMF发送会话建立请求消息。S801. The UE sends a session establishment request message to the AMF.
S802，AMF选择I-SMF和SMF。AMF向I-SMF发送创建会话管理上下文请求消息。S802, AMF selects I-SMF and SMF. AMF sends a create session management context request message to I-SMF.
S803，I-SMF向AMF发送创建会话管理上下文响应消息。S803, I-SMF sends a create session management context response message to AMF.
S804，I-SMF选择I-UPF；该I-SMF向选择的I-UPF发起N4会话创建过程。S804, the I-SMF selects the I-UPF; the I-SMF initiates the N4 session creation process to the selected I-UPF.
其中，步骤S801-步骤S804请参照图6实施例的步骤S401-步骤S404，在此不再赘述。For steps S801 to S804, please refer to steps S401 to S404 in the embodiment of FIG. 6 , which will not be described again here.
S805，I-SMF向SMF发送会话创建请求消息，该会话创建请求消息包括UE ID、I-SMFID、所选择的I-UPF ID、PDU会话标识。S805. The I-SMF sends a session creation request message to the SMF. The session creation request message includes the UE ID, I-SMFID, the selected I-UPF ID, and the PDU session identifier.
该会话创建请求消息对应到服务化接口Nsmf_PDUSession_Create request。The session creation request message corresponds to the service interface Nsmf_PDUSession_Create request.
S806，SMF向PCF发起会话管理策略关联建立流程，以获取该会话关联的策略。SMF根据会话关联的策略中获取会话包含的QoS流的5QI。可以理解的是，该会话可以包括至少一个QoS流，该SMF可以分别获取该至少一个QoS流中一个或多个QoS流的5QI。S806: The SMF initiates a session management policy association establishment process to the PCF to obtain the policy associated with the session. SMF obtains the 5QI of the QoS flow included in the session based on the policy associated with the session. It can be understood that the session may include at least one QoS flow, and the SMF may respectively obtain the 5QI of one or more QoS flows in the at least one QoS flow.
S807，SMF选择UPF，并向该选择的UPF发起N4会话创建过程。SMF根据QoS流的用户面连接所经过的I-UPF和UPF拓扑组合、QoS流的5QI，确定QoS流对应的N9 CN PDB。例如，SMF从表格五中选择QoS流的用户面连接所经过的I-UPF和UPF的拓扑组合和QoS流的5QI对应的N9 CN PDB。S807: The SMF selects a UPF and initiates an N4 session creation process to the selected UPF. SMF determines the N9 CN PDB corresponding to the QoS flow based on the I-UPF and UPF topology combination passed by the user plane connection of the QoS flow and the 5QI of the QoS flow. For example, SMF selects the topological combination of I-UPF and UPF through which the user plane connection of the QoS flow passes and the N9 CN PDB corresponding to the 5QI of the QoS flow from Table 5.
S808，SMF向I-SMF发送会话创建响应消息，该会话创建响应消息包括QoS流的QoS规则、QoS流的QoS文档、QoS流的QoS流标识、QoS流的5QI以及QoS流对应的N9 CN PDB。可选的，QoS流对应的N9 CN PDB也可以包含在QoS流的QoS文档中。其中，QoS流的5QI也可以被包含在QoS流的QoS文档中，I-SMF可以解析该QoS文档，从而获得QoS流的5QI。S808. The SMF sends a session creation response message to the I-SMF. The session creation response message includes the QoS rules of the QoS flow, the QoS document of the QoS flow, the QoS flow identifier of the QoS flow, the 5QI of the QoS flow, and the N9 CN PDB corresponding to the QoS flow. . Optionally, the N9 CN PDB corresponding to the QoS flow can also be included in the QoS document of the QoS flow. Among them, the 5QI of the QoS flow can also be included in the QoS document of the QoS flow, and I-SMF can parse the QoS document to obtain the 5QI of the QoS flow.
S809，I-SMF根据QoS流的用户面连接所经过的RAN和I-UPF拓扑组合、QoS流的5QI，确定QoS流对应的N3 CN PDB。例如，I-SMF从表格四中选择QoS流的用户面连接所经过的RAN和I-UPF的拓扑组合和QoS流的5QI对应的N3 CN PDB。S809. The I-SMF determines the N3 CN PDB corresponding to the QoS flow based on the RAN and I-UPF topology combination passed by the user plane connection of the QoS flow and the 5QI of the QoS flow. For example, I-SMF selects the topological combination of RAN and I-UPF through which the user plane connection of the QoS flow passes and the N3 CN PDB corresponding to the 5QI of the QoS flow from Table 4.
S810，I-SMF向AMF发送N1N2消息传输请求，该N1N2消息传输请求包括N2 SM信息和N1 SM信息，该N2 SM信息包括QoS流对应的N3 CN PDB和QoS流对应的N9 CN PDB。S810. The I-SMF sends an N1N2 message transmission request to the AMF. The N1N2 message transmission request includes N2 SM information and N1 SM information. The N2 SM information includes the N3 CN PDB corresponding to the QoS flow and the N9 CN PDB corresponding to the QoS flow.
S811，AMF向RAN发送N2 PDU会话请求。该N2 PDU会话请求可以包括N2 SM信息、NAS消息。其中NAS消息包含N1 SM信息。S811. The AMF sends an N2 PDU session request to the RAN. The N2 PDU session request may include N2 SM information and NAS messages. The NAS message contains N1 SM information.
可选的，QoS流对应的N3 CN PDB和QoS流对应的N9 CN PDB都可以包含在QoS文档中发送给RAN。Optionally, both the N3 CN PDB corresponding to the QoS flow and the N9 CN PDB corresponding to the QoS flow can be included in the QoS document and sent to the RAN.
S812，RAN根据QoS流对应的N3 CN PDB、QoS流对应的N9 CN PDB以及QoS流的5QI对应的PDB，确定QoS流对应的AN PDB。S812: The RAN determines the AN PDB corresponding to the QoS flow based on the N3 CN PDB corresponding to the QoS flow, the N9 CN PDB corresponding to the QoS flow, and the PDB corresponding to the 5QI of the QoS flow.
S813，会话建立流程的其他步骤。例如空口资源建立、核心网用户面路径更新等。S813, other steps of the session establishment process. For example, air interface resource establishment, core network user plane path update, etc.
可以理解的是，上述各个步骤的执行顺序本申请不作限定。It can be understood that the execution order of each of the above steps is not limited in this application.
以上，结合图3至图10详细说明了本申请实施例提供的方法。以下，结合图11至图13详细说明本申请实施例提供的装置。Above, the method provided by the embodiment of the present application is described in detail with reference to FIGS. 3 to 10 . Hereinafter, the device provided by the embodiment of the present application will be described in detail with reference to FIGS. 11 to 13 .
可以理解的是，为了实现上述实施例中功能，中间会话管理网元、锚点会话管理网元以及接入网设备包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本申请中所公开的实施例描述的各示例的单元及方法步骤，本申请能够以硬件、软件、或硬件和软件相结合的形式来实现。某个功能究竟以硬件、软件、或是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用场景和设计约束条件。It can be understood that, in order to implement the functions in the above embodiments, the intermediate session management network element, the anchor session management network element, and the access network device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that the units and method steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in the form of hardware, software, or a combination of hardware and software. Whether a certain function is executed by hardware, software, or computer software driving the hardware depends on the specific application scenarios and design constraints of the technical solution.
图11是本申请实施例提供的通信装置的示意性框图。如图11所示，该通信装置900可以包括处理单元910和收发单元920。处理单元910和收发单元920可以是软件，也可以是硬件，或者是软件和硬件结合。Figure 11 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 11 , the communication device 900 may include a processing unit 910 and a transceiver unit 920 . The processing unit 910 and the transceiver unit 920 may be software, hardware, or a combination of software and hardware.
其中，收发单元920可包括发送单元和接收单元，发送单元用于实现发送功能，接收单元用于实现接收功能，收发单元920可以实现发送功能和/或接收功能。收发单元也可以描述为通信单元。The transceiving unit 920 may include a sending unit and a receiving unit. The sending unit is used to implement the sending function, and the receiving unit is used to implement the receiving function. The transceiving unit 920 may implement the sending function and/or the receiving function. The transceiver unit can also be described as a communication unit.
可选的，收发单元920可以用于接收其他装置发送的信息，还可以用于向其他装置发送信息。处理单元910可以用于进行装置的内部处理。Optionally, the transceiver unit 920 can be used to receive information sent by other devices, and can also be used to send information to other devices. The processing unit 910 may be used to perform internal processing of the device.
在一种可能的设计中，该通信装置900可对应于上述方法实施例中的中间会话管理网元，如该通信装置900可以是中间会话管理网元，也可以是中间会话管理网元中的芯片。该通信装置900可以包括用于执行上述方法实施例中由中间会话管理网元所执行的操作的单元，并且，该通信装置900中的各单元分别为了实现上述方法实施例中由中间会话管理网元所执行的操作。In a possible design, the communication device 900 may correspond to the intermediate session management network element in the above method embodiment. For example, the communication device 900 may be an intermediate session management network element, or may be an intermediate session management network element in the intermediate session management network element. chip. The communication device 900 may include units for performing operations performed by the intermediate session management network element in the above method embodiment, and each unit in the communication device 900 is respectively used to implement the operations performed by the intermediate session management network element in the above method embodiment. The operation performed by the element.
示例性的，处理单元910，用于确定将第一QoS流中的第一业务流进行分流，所述第一QoS流包括至少两个业务流，所述至少两个业务流中包括所述第一业务流；Exemplarily, the processing unit 910 is configured to determine to offload the first service flow in the first QoS flow, the first QoS flow includes at least two service flows, and the at least two service flows include the first service flow. a business flow;
所述处理单元910还用于将所述第一业务流绑定到第二QoS流，并为所述第二QoS流分配QoS流标识；The processing unit 910 is also configured to bind the first service flow to a second QoS flow, and assign a QoS flow identifier to the second QoS flow;
收发单元920，用于将所述QoS流标识发送给所述锚点会话管理网元。The transceiver unit 920 is configured to send the QoS flow identifier to the anchor session management network element.
在一种可能的设计中，该通信装置900可对应于第一会话管理网元，也可以是第一会话管理网元中的芯片。可选的，该第一会话管理网元可以是锚点会话管理网元或中间会话管理网元。若该第一会话管理网元是锚点会话管理网元，该通信装置900可以包括用于执行上述方法实施例中由锚点会话管理网元所执行的操作的单元，并且，该通信装置900中的各单元分别为了实现上述方法实施例中由锚点会话管理网元所执行的操作。若该第一会话管理网元是中间会话管理网元，该通信装置900可以包括用于执行上述方法实施例中由中间会话管理网元所执行的操作的单元，并且，该通信装置900中的各单元分别为了实现上述方法实施例中由中间会话管理网元所执行的操作。In a possible design, the communication device 900 may correspond to the first session management network element, or may be a chip in the first session management network element. Optionally, the first session management network element may be an anchor session management network element or an intermediate session management network element. If the first session management network element is an anchor session management network element, the communication device 900 may include a unit for performing the operations performed by the anchor session management network element in the above method embodiment, and the communication device 900 Each unit in is respectively intended to implement the operations performed by the anchor session management network element in the above method embodiment. If the first session management network element is an intermediate session management network element, the communication device 900 may include a unit for performing the operations performed by the intermediate session management network element in the above method embodiment, and the communication device 900 Each unit is respectively intended to implement the operations performed by the intermediate session management network element in the above method embodiment.
示例性的，处理单元910，用于获取QoS流对应的第一CN PDB，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，其中，所述中间会话管理网元与所述中间用户面网元相连；Exemplarily, the processing unit 910 is configured to obtain the first CN PDB corresponding to the QoS flow. The first CN PDB is the CN PDB between the access network device and the intermediate user plane network element, wherein the intermediate session management The network element is connected to the intermediate user plane network element;
所述处理单元910还用于获取所述QoS流对应的第二CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，其中，所述锚点会话管理网元与所述锚点用户面网元相连；The processing unit 910 is also configured to obtain a second CN PDB corresponding to the QoS flow, where the second CN PDB is a CN PDB between the intermediate user plane network element and the anchor user plane network element, wherein: The anchor session management network element is connected to the anchor user plane network element;
所述处理单元910还用于根据所述QoS流对应的第一CN PDB和所述QoS流对应的第二CN PDB，确定所述QoS流对应的CN PDB；The processing unit 910 is further configured to determine the CN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow;
其中，当所述第一会话管理网元为锚点会话管理网元时，所述处理单元910具体用于通过收发单元920从中间会话管理网元接收所述QoS流对应的第一CN PDB；或者，当所述第一会话管理网元为所述中间会话管理网元时，所述处理单元910具体用于通过所述收发单元920从所述锚点会话管理网元接收所述QoS流对应的第二CN PDB。Wherein, when the first session management network element is an anchor session management network element, the processing unit 910 is specifically configured to receive the first CN PDB corresponding to the QoS flow from the intermediate session management network element through the transceiver unit 920; Or, when the first session management network element is the intermediate session management network element, the processing unit 910 is specifically configured to receive the QoS flow correspondence from the anchor session management network element through the transceiver unit 920 The second CN PDB.
在一种可能的设计中，该通信装置900可对应于上述方法实施例中的接入网设备，如该通信装置900可以是接入网设备，也可以是接入网设备中的芯片。该通信装置900可以包括用于执行上述方法实施例中由接入网设备所执行的操作的单元，并且，该通信装置900中的各单元分别为了实现上述方法实施例中由接入网设备所执行的操作。In a possible design, the communication device 900 may correspond to the access network equipment in the above method embodiment. For example, the communication device 900 may be an access network equipment or a chip in the access network equipment. The communication device 900 may include units for performing operations performed by the access network device in the above method embodiment, and each unit in the communication device 900 is respectively used to implement the operations performed by the access network device in the above method embodiment. The operation performed.
示例性的，收发单元920，用于从中间会话管理网元接收QoS流对应的第一CN PDB，从锚点会话管理网元接收所述QoS流对应的第二CN PDB，其中，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，所述中间会话管理网元与所述中间用户面网元相连，所述锚点会话管理网元与所述锚点用户面网元相连；Exemplarily, the transceiver unit 920 is configured to receive the first CN PDB corresponding to the QoS flow from the intermediate session management network element, and to receive the second CN PDB corresponding to the QoS flow from the anchor session management network element, wherein the first CN PDB corresponding to the QoS flow is received from the anchor session management network element. One CN PDB is a CN PDB between the access network equipment and the intermediate user plane network element. The second CN PDB is a CN PDB between the intermediate user plane network element and the anchor user plane network element. The intermediate The session management network element is connected to the intermediate user plane network element, and the anchor session management network element is connected to the anchor user plane network element;
处理单元910，用于确定所述QoS流对应的报文延迟预算PDB；The processing unit 910 is configured to determine the packet delay budget PDB corresponding to the QoS flow;
所述处理单元910还用于根据所述QoS流对应的第一CN PDB、所述QoS流对应的第二CN PDB和所述QoS流对应的PDB，确定所述QoS流对应的接入网报文延迟预算AN PDB。The processing unit 910 is further configured to determine the access network report corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow, the second CN PDB corresponding to the QoS flow, and the PDB corresponding to the QoS flow. Paper Delay Budget AN PDB.
应理解，上述通信装置900为配置于中间会话管理网元、或锚点会话管理网元或接入网设备中的芯片时，该通信装置900中的收发单元920可以为输入/输出接口。It should be understood that when the communication device 900 is a chip configured in an intermediate session management network element, an anchor session management network element, or an access network device, the transceiver unit 920 in the communication device 900 may be an input/output interface.
应理解，该通信装置900为中间会话管理网元、或锚点会话管理网元或接入网设备时，该通信装置900中的收发单元920可对应于图12中示出的通信接口1010，处理单元910可对应于图12中示出的处理器1020。It should be understood that when the communication device 900 is an intermediate session management network element, an anchor session management network element, or an access network device, the transceiver unit 920 in the communication device 900 may correspond to the communication interface 1010 shown in Figure 12, The processing unit 910 may correspond to the processor 1020 shown in FIG. 12 .
请参照图12，是本申请一个实施例的通信装置的示意性结构图。应理解，图12示出的通信装置1000仅是示例，本申请实施例的通信装置还可包括其他模块或单元，或者包括与图12中的各个模块的功能相似的模块，或者并非要包括图12中所有模块。Please refer to Figure 12, which is a schematic structural diagram of a communication device according to an embodiment of the present application. It should be understood that the communication device 1000 shown in FIG. 12 is only an example. The communication device in the embodiment of the present application may also include other modules or units, or modules with similar functions to the modules in FIG. 12 , or is not intended to include those shown in FIG. All modules in 12.
通信装置1000包括通信接口1010和至少一个处理器1020。Communication device 1000 includes a communication interface 1010 and at least one processor 1020.
该通信装置1000可以对应中间会话管理网元、或锚点会话管理网元或接入网设备中的任一网元或设备。至少一个处理器1020执行程序指令，使得通信装置1000实现上述方法实施例中由对应网元所执行的方法的相应流程。The communication device 1000 may correspond to any network element or device among an intermediate session management network element, an anchor session management network element, or an access network device. At least one processor 1020 executes program instructions, so that the communication device 1000 implements the corresponding process of the method executed by the corresponding network element in the above method embodiment.
在一种可能的设计中，该通信装置1000可对应于上述方法实施例中的中间会话管理网元，如该通信装置100可以是中间会话管理网元，也可以是中间会话管理网元中的芯片。该通信装置1000可以包括用于执行上述方法实施例中由中间会话管理网元所执行的操作的组件。In a possible design, the communication device 1000 may correspond to the intermediate session management network element in the above method embodiment. For example, the communication device 100 may be an intermediate session management network element, or may be an intermediate session management network element in the intermediate session management network element. chip. The communication device 1000 may include components for performing operations performed by the intermediate session management network element in the above method embodiments.
示例性的，处理器1020用于确定将第一QoS流中的第一业务流进行分流，所述第一QoS流包括至少两个业务流，所述至少两个业务流中包括所述第一业务流；Exemplarily, the processor 1020 is configured to determine to offload the first service flow in the first QoS flow, the first QoS flow includes at least two service flows, and the at least two service flows include the first business flow;
处理器1020还用于将所述第一业务流绑定到第二QoS流，并为所述第二QoS流分配QoS流标识；The processor 1020 is also configured to bind the first service flow to a second QoS flow, and assign a QoS flow identifier to the second QoS flow;
通信接口1010用于将所述QoS流标识发送给所述锚点会话管理网元。The communication interface 1010 is used to send the QoS flow identifier to the anchor session management network element.
在一种可能的设计中，该通信装置1000可对应于第一会话管理网元，也可以是第一会话管理网元中的芯片。可选的，该第一会话管理网元可以是锚点会话管理网元或中间会话管理网元。若该第一会话管理网元是锚点会话管理网元，该通信装置1000可以包括用于执行上述方法实施例中由锚点会话管理网元所执行的操作的组件，并且，该通信装置1000中的各组件分别为了实现上述方法实施例中由锚点会话管理网元所执行的操作。若该第一会话管理网元是中间会话管理网元，该通信装置1000可以包括用于执行上述方法实施例中由中间会话管理网元所执行的操作的组件，并且，该通信装置1000中的各组件分别为了实现上述方法实施例中由中间会话管理网元所执行的操作。In a possible design, the communication device 1000 may correspond to the first session management network element, or may be a chip in the first session management network element. Optionally, the first session management network element may be an anchor session management network element or an intermediate session management network element. If the first session management network element is an anchor session management network element, the communication device 1000 may include components for performing operations performed by the anchor session management network element in the above method embodiments, and the communication device 1000 Each component in is respectively intended to implement the operations performed by the anchor session management network element in the above method embodiment. If the first session management network element is an intermediate session management network element, the communication device 1000 may include components for performing the operations performed by the intermediate session management network element in the above method embodiment, and, in the communication device 1000 Each component is respectively intended to implement the operations performed by the intermediate session management network element in the above method embodiment.
示例性的，处理器1020，用于获取QoS流对应的第一CN PDB，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，其中，所述中间会话管理网元与所述中间用户面网元相连；Exemplarily, the processor 1020 is configured to obtain the first CN PDB corresponding to the QoS flow. The first CN PDB is the CN PDB between the access network device and the intermediate user plane network element, wherein the intermediate session management The network element is connected to the intermediate user plane network element;
所述处理器1020还用于获取所述QoS流对应的第二CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，其中，所述锚点会话管理网元与所述锚点用户面网元相连；The processor 1020 is also configured to obtain a second CN PDB corresponding to the QoS flow, where the second CN PDB is a CN PDB between the intermediate user plane network element and the anchor user plane network element, wherein: The anchor session management network element is connected to the anchor user plane network element;
所述处理器1020还用于根据所述QoS流对应的第一CN PDB和所述QoS流对应的第二CN PDB，确定所述QoS流对应的CN PDB；The processor 1020 is further configured to determine the CN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow;
其中，当所述第一会话管理网元为锚点会话管理网元时，所述处理器1020具体用于通过通信接口1010从中间会话管理网元接收所述QoS流对应的第一CN PDB；或者，当所述第一会话管理网元为所述中间会话管理网元时，所述处理器1020具体用于通过所述通信接口1010从所述锚点会话管理网元接收所述QoS流对应的第二CN PDB。Wherein, when the first session management network element is an anchor session management network element, the processor 1020 is specifically configured to receive the first CN PDB corresponding to the QoS flow from the intermediate session management network element through the communication interface 1010; Or, when the first session management network element is the intermediate session management network element, the processor 1020 is specifically configured to receive the QoS flow correspondence from the anchor session management network element through the communication interface 1010 The second CN PDB.
在一种可能的设计中，该通信装置1000可对应于上述方法实施例中的接入网设备，如该通信装置1000可以是接入网设备，也可以是接入网设备中的芯片。该通信装置1000可以包括用于执行上述方法实施例中由接入网设备所执行的操作的组件。In a possible design, the communication device 1000 may correspond to the access network equipment in the above method embodiment. For example, the communication device 1000 may be an access network equipment or a chip in the access network equipment. The communication device 1000 may include components for performing operations performed by the access network device in the above method embodiments.
示例性的，通信接口1010，用于从中间会话管理网元接收QoS流对应的第一CNPDB，从锚点会话管理网元接收所述QoS流对应的第二CN PDB，其中，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，所述中间会话管理网元与所述中间用户面网元相连，所述锚点会话管理网元与所述锚点用户面网元相连；Exemplarily, the communication interface 1010 is configured to receive the first CNPDB corresponding to the QoS flow from the intermediate session management network element, and to receive the second CN PDB corresponding to the QoS flow from the anchor session management network element, wherein the first The CN PDB is the CN PDB between the access network device and the intermediate user plane network element. The second CN PDB is the CN PDB between the intermediate user plane network element and the anchor user plane network element. The intermediate session The management network element is connected to the intermediate user plane network element, and the anchor session management network element is connected to the anchor user plane network element;
处理器1020，用于确定所述QoS流对应的报文延迟预算PDB；Processor 1020, configured to determine the packet delay budget PDB corresponding to the QoS flow;
所述处理器1020还用于根据所述QoS流对应的第一CN PDB、所述QoS流对应的第二CN PDB和所述QoS流对应的PDB，确定所述QoS流对应的接入网报文延迟预算AN PDB。The processor 1020 is further configured to determine the access network report corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow, the second CN PDB corresponding to the QoS flow, and the PDB corresponding to the QoS flow. Paper Delay Budget AN PDB.
可选地，通信装置1000还可以包括存储器。该存储器可以存储程序指令，至少一个处理器1020可以读取存储器所存储的程序指令并执行该程序指令。Optionally, the communication device 1000 may further include a memory. The memory can store program instructions, and at least one processor 1020 can read the program instructions stored in the memory and execute the program instructions.
对于通信装置可以是芯片或芯片系统的情况，可参见图13所示的芯片的结构示意图。图13所示的芯片2000包括处理器2001和接口2002。其中，处理器2001的数量可以是一个或多个，接口2002的数量可以是多个。需要说明的，处理器2001、接口2002各自对应的功能既可以通过硬件设计实现，也可以通过软件设计来实现，还可以通过软硬件结合的方式来实现，这里不作限制。For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 13 . The chip 2000 shown in FIG. 13 includes a processor 2001 and an interface 2002. The number of processors 2001 may be one or more, and the number of interfaces 2002 may be multiple. It should be noted that the corresponding functions of the processor 2001 and the interface 2002 can be realized through hardware design, software design, or a combination of software and hardware, which are not limited here.
在一种可能的设计中，对于芯片用于实现本申请实施例中的中间会话管理网元的功能的情况：处理器2001用于确定将第一QoS流中的第一业务流进行分流，所述第一QoS流包括至少两个业务流，所述至少两个业务流中包括所述第一业务流；In a possible design, when the chip is used to implement the function of the intermediate session management network element in the embodiment of the present application: the processor 2001 is used to determine to offload the first service flow in the first QoS flow, so The first QoS flow includes at least two service flows, and the at least two service flows include the first service flow;
处理器2001还用于将所述第一业务流绑定到第二QoS流，并为所述第二QoS流分配QoS流标识；The processor 2001 is also configured to bind the first service flow to a second QoS flow, and assign a QoS flow identifier to the second QoS flow;
接口2002用于将所述QoS流标识发送给所述锚点会话管理网元。The interface 2002 is used to send the QoS flow identifier to the anchor session management network element.
对于芯片用于实现本申请实施例中第一会话管理网元的功能的情况：处理器2001，用于获取QoS流对应的第一CN PDB，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，其中，所述中间会话管理网元与所述中间用户面网元相连；For the case where the chip is used to implement the function of the first session management network element in the embodiment of the present application: the processor 2001 is used to obtain the first CN PDB corresponding to the QoS flow. The first CN PDB is the access network device and the intermediate CN PDB between user plane network elements, wherein the intermediate session management network element is connected to the intermediate user plane network element;
所述处理器2001还用于获取所述QoS流对应的第二CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，其中，所述锚点会话管理网元与所述锚点用户面网元相连；The processor 2001 is also configured to obtain a second CN PDB corresponding to the QoS flow, where the second CN PDB is a CN PDB between the intermediate user plane network element and the anchor user plane network element, wherein: The anchor session management network element is connected to the anchor user plane network element;
所述处理器2001还用于根据所述QoS流对应的第一CN PDB和所述QoS流对应的第二CN PDB，确定所述QoS流对应的CN PDB；The processor 2001 is further configured to determine the CN PDB corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow and the second CN PDB corresponding to the QoS flow;
其中，当所述第一会话管理网元为锚点会话管理网元时，所述处理器2001具体用于通过接口2002从中间会话管理网元接收所述QoS流对应的第一CN PDB；或者，当所述第一会话管理网元为所述中间会话管理网元时，所述处理器2001具体用于通过所述接口2002从所述锚点会话管理网元接收所述QoS流对应的第二CN PDB。Wherein, when the first session management network element is an anchor session management network element, the processor 2001 is specifically configured to receive the first CN PDB corresponding to the QoS flow from the intermediate session management network element through the interface 2002; or , when the first session management network element is the intermediate session management network element, the processor 2001 is specifically configured to receive the third QoS flow corresponding to the QoS flow from the anchor session management network element through the interface 2002. 2CN PDB.
对于芯片用于实现本申请实施例中接入网设备的功能的情况：接口2002，用于从中间会话管理网元接收QoS流对应的第一CN PDB，从锚点会话管理网元接收所述QoS流对应的第二CN PDB，其中，所述第一CN PDB为接入网设备与中间用户面网元之间的CN PDB，所述第二CN PDB为所述中间用户面网元与锚点用户面网元之间的CN PDB，所述中间会话管理网元与所述中间用户面网元相连，所述锚点会话管理网元与所述锚点用户面网元相连；For the case where the chip is used to implement the functions of the access network device in the embodiment of the present application: the interface 2002 is used to receive the first CN PDB corresponding to the QoS flow from the intermediate session management network element, and to receive the first CN PDB corresponding to the QoS flow from the anchor session management network element. The second CN PDB corresponding to the QoS flow, wherein the first CN PDB is the CN PDB between the access network device and the intermediate user plane network element, and the second CN PDB is the CN PDB between the intermediate user plane network element and the anchor CN PDB between point user plane network elements, the intermediate session management network element is connected to the intermediate user plane network element, and the anchor session management network element is connected to the anchor user plane network element;
处理器2001，用于确定所述QoS流对应的报文延迟预算PDB；Processor 2001, configured to determine the packet delay budget PDB corresponding to the QoS flow;
所述处理器2001还用于根据所述QoS流对应的第一CN PDB、所述QoS流对应的第二CN PDB和所述QoS流对应的PDB，确定所述QoS流对应的接入网报文延迟预算AN PDB。The processor 2001 is further configured to determine the access network report corresponding to the QoS flow based on the first CN PDB corresponding to the QoS flow, the second CN PDB corresponding to the QoS flow, and the PDB corresponding to the QoS flow. Paper Delay Budget AN PDB.
可选的，芯片还包括存储器2003，存储器2003用于存储必要的程序指令和数据。Optionally, the chip also includes a memory 2003, which is used to store necessary program instructions and data.
本申请实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。The processor in the embodiment of the present application may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), or application specific integrated circuits (Application Specific Integrated Circuits). integrated circuit (ASIC), ready-made field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行前述任一方法实施例中的中间会话管理网元侧、锚点会话管理网元侧或接入网设备侧的方法。According to the method provided by the embodiment of the present application, the present application also provides a computer program product. The computer program product includes: computer program code. When the computer program code is run on a computer, it causes the computer to execute any of the foregoing method embodiments. Methods on the intermediate session management network element side, the anchor session management network element side or the access network device side.
本申请的另一实施例中，还提供一种通信系统，该通信系统包括中间会话管理网元和锚点会话管理网元。可选的，该通信系统还可以包括接入网设备。示例性的，中间会话管理网元和锚点会话管理网元可以为图3至图10任一实施例所提供的中间会话管理网元和锚点会话管理网元，且用于执行图3至图10任一实施例中相应网元执行的步骤；和/或，接入网设备可以为图3至图10任一实施例所提供的接入网设备，且用于执行图3至图10任一实施例中接入网设备执行的步骤。In another embodiment of the present application, a communication system is also provided. The communication system includes an intermediate session management network element and an anchor session management network element. Optionally, the communication system may also include access network equipment. Exemplarily, the intermediate session management network element and the anchor session management network element may be the intermediate session management network element and the anchor session management network element provided in any embodiment of Figures 3 to 10, and are used to perform the steps of Figures 3 to 10. Steps performed by the corresponding network element in any embodiment of Figure 10; and/or the access network device can be the access network device provided in any embodiment of Figure 3 to Figure 10, and used to perform Figure 3 to Figure 10 Steps performed by the access network device in any embodiment.
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器用于执行上述任一方法实施例中的方法。An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method in any of the above method embodiments.
应理解，上述处理装置可以是一个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integratedcircuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，还可以是系统芯片(system onchip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。It should be understood that the above processing device may be a chip. For example, the processing device may be a field programmable gate array (FPGA), a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), Off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, system on chip (SoC), or central processing unit (CPU) A central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), or a It can be a programmable logic device (PLD) or other integrated chip. Each method, step and logical block diagram disclosed in the embodiment of this application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rateSDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(directrambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (directrambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks). SSD)) etc.
上述各个装置实施例中的中间会话管理网元、锚点会话管理网元或接入网设备和方法实施例中的中间会话管理网元、锚点会话管理网元或接入网设备完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。The intermediate session management network element, anchor session management network element or access network equipment in each of the above device embodiments and the intermediate session management network element, anchor session management network element or access network equipment in the method embodiments completely correspond, Corresponding steps are performed by corresponding modules or units. For example, the communication unit (transceiver) performs the receiving or transmitting steps in the method embodiment. Other steps except transmitting and receiving may be performed by the processing unit (processor). For the functions of specific units, please refer to the corresponding method embodiments. There can be one or more processors.
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程或执行线程中，部件可位于一个计算机上或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地或远程进程来通信。The terms "component", "module", "system", etc. used in this specification are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process, processor, object, executable file, thread of execution, program or computer running on a processor. Through the illustrations, both applications running on the computing device and the computing device may be components. One or more components can reside in a process or thread of execution, and the component can be localized on one computer or distributed between 2 or more computers. Additionally, these components can execute from various computer-readable media having various data structures stored thereon. A component may, for example, pass a local signal based on a signal with one or more data packets (eg, data from two components interacting with another component, a local system, a distributed system, or a network, such as the Internet, which interacts with other systems via signals). or remote process to communicate.
应理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。It will be understood that reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Therefore, various embodiments are not necessarily referred to the same embodiment throughout this specification. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.
应理解，在本申请实施例中，编号“第一”、“第二”…仅仅为了区分不同的对象，比如为了区分不同的网络设备，并不对本申请实施例的范围构成限制，本申请实施例并不限于此。It should be understood that in the embodiment of the present application, the numbers "first", "second"... are only used to distinguish different objects, such as different network devices, and do not limit the scope of the embodiment of the present application. Examples are not limited to this.
还应理解，在本申请中，“当…时”、“若”以及“如果”均指在某种客观情况下网元会做出相应的处理，并非是限定时间，且也不要求网元实现时一定要有判断的动作，也不意味着存在其它限定。It should also be understood that in this application, "when", "if" and "if" all mean that the network element will make corresponding processing under certain objective circumstances. It does not limit the time and does not require the network element to do so. There must be judgment actions during implementation, and it does not mean that there are other restrictions.
还应理解，在本申请各实施例中，“A对应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。It should also be understood that in various embodiments of the present application, "A corresponds to B" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B only based on A. B can also be determined based on A and/or other information.
还应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。It should also be understood that the term "and/or" in this article is only an association relationship describing related objects, indicating that there can be three relationships. For example, A and/or B can mean: A alone exists, and A and A exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.
本申请中出现的类似于“项目包括如下中的一项或多项：A，B，以及C”表述的含义，如无特别说明，通常是指该项目可以为如下中任一个：A；B；C；A和B；A和C；B和C；A，B和C；A和A；A，A和A；A，A和B；A，A和C，A，B和B；A，C和C；B和B，B，B和B，B，B和C，C和C；C，C和C，以及其他A，B和C的组合。以上是以A，B和C共3个元素进行举例来说明该项目的可选用条目，当表达为“项目包括如下中至少一种：A，B，……，以及X”时，即表达中具有更多元素时，那么该项目可以适用的条目也可以按照前述规则获得。The meaning of expressions similar to "the project includes one or more of the following: A, B, and C" appearing in this application, unless otherwise specified, usually means that the project can be any one of the following: A; B ;C;A and B;A and C;B and C;A,B and C;A and A;A,A and A;A,A and B;A,A and C,A,B and B;A , C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C. The above is an example of three elements A, B and C to illustrate the optional items of the project. When expressed as "the project includes at least one of the following: A, B,..., and X", it is expressed When there are more elements, then the entries to which the project can apply can also be obtained according to the aforementioned rules.
可以理解的，本申请实施例中，中间会话管理网元、锚点会话管理网元或接入网设备可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。It can be understood that in the embodiment of the present application, the intermediate session management network element, the anchor session management network element or the access network device can perform some or all of the steps in the embodiment of the present application. These steps or operations are only examples. The present application Embodiments may also perform other operations or variations of various operations. In addition, various steps may be performed in a different order than those presented in the embodiments of the present application, and it may not be necessary to perform all operations in the embodiments of the present application.
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等各种可以存储程序代码的介质。If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory ROM, random access memory RAM, magnetic disk or optical disk and other various media that can store program codes.
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.
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