CN101483899B - Method, system and network anchor point for initiating source network bearing release in switching process - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及移动通信领域，特别涉及一种在切换过程中发起源网络承载释放的方法、系统和网络锚点。The invention relates to the field of mobile communication, in particular to a method, a system and a network anchor point for initiating source network bearer release during handover.
背景技术Background technique
传统的移动通信网络，如GSM(Global system for mobile communications，全球移动通信系统)、UMTS(Universal Mobile Telecommunications System，通用移动通讯系统)等，由于系统频率资源有限、传输环境恶劣等因素，无法提供高的接入速率。随着人们对无线网络的接入速度的要求不断提高，出现了一些新兴的宽带无线接入技术，例如WLAN(无线局域网，Wireless Local AreaNetwork)和WiMAX(全球微波互联接入，Worldwide Interoperability forMicrowave Access)等宽带无线接入技术。这些宽带无线接入技术可以提供更高速率的宽带无线接入业务，大大提高了无线通信的接入速率。因此，传统的移动通信网络与宽带无线接入技术的融合将成为今后电信网络的演进趋势。Traditional mobile communication networks, such as GSM (Global system for mobile communications, Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System), etc., cannot provide high access rate. As people's requirements for wireless network access speed continue to increase, some emerging broadband wireless access technologies have emerged, such as WLAN (Wireless Local Area Network, Wireless Local Area Network) and WiMAX (Worldwide Interoperability for Microwave Access) and other broadband wireless access technologies. These broadband wireless access technologies can provide higher-speed broadband wireless access services, greatly improving the access rate of wireless communications. Therefore, the integration of traditional mobile communication network and broadband wireless access technology will become the evolution trend of telecommunication network in the future.
在演进无线网络架构中，移动终端可以通过不同的接入网络，比如，WLAN、WiMAX，UMTS等，获得业务数据，这就要求移动终端可以在不同的接入网络之间进行切换，同时又能保持业务的连续性。In the evolved wireless network architecture, mobile terminals can obtain service data through different access networks, such as WLAN, WiMAX, UMTS, etc., which requires mobile terminals to be able to switch between different access networks, while being able to Maintain business continuity.
通常，移动终端从源网络切换到目标网络需要经过两个过程：目标网络承载建立过程和源网络承载释放过程。在移动终端完成从源网络到目标网络切换后，源网络的承载此时处于闲置状态，需要进行释放，以提高资源的利用率。Usually, the mobile terminal needs to go through two processes when switching from the source network to the target network: the target network bearer establishment process and the source network bearer release process. After the mobile terminal completes the handover from the source network to the target network, the bearer of the source network is in an idle state at this time and needs to be released to improve resource utilization.
在演进的网络架构中，由于移动终端可以通过不同的接入网络获得业务数据。因此，移动终端在网络中的切换可能会包括同质网络之间的切换和异质网络之间的切换。同质网络之间的切换，如3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)网络之间的切换，两个网络中的MME(MobilityManagement Entity，移动性管理实体)或SGSN(Serving General Packet RadioService Support Node，通用无线分组业务服务支持节点)之间是有连接的，在终端切换到目标网络后，目标网络的MME或SGSN会通过源网络的MME或SGSN进行资源的释放。但是，异质网络的之间切换，如3GPP网络与非3GPP网络之间的切换，由于基于不同的接入技术，会导致异质网络之间的切换更加复杂。In an evolved network architecture, a mobile terminal can obtain service data through different access networks. Therefore, the handover of the mobile terminal in the network may include handover between homogeneous networks and handover between heterogeneous networks. Handover between homogeneous networks, such as handover between 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) networks, MME (Mobility Management Entity, Mobility Management Entity) or SGSN (Serving General Packet) in two networks There is a connection between the RadioService Support Node (GPRS) and after the terminal switches to the target network, the MME or SGSN of the target network will release resources through the MME or SGSN of the source network. However, handover between heterogeneous networks, such as handover between a 3GPP network and a non-3GPP network, is based on different access technologies, making the handover between heterogeneous networks more complicated.
例如，在当前的标准中，对于3GPP网络和非3GPP网络之间的切换，提供了两种切换类型：基本切换和优化切换。基本切换主要是满足终端能够将业务顺利切换到目标网络，而不保证无缝和无损。而优化切换是对于切换进行了优化处理，根据实际布局场景使异质网络之间的切换更加快速，以便实现切换的无缝和无损。在基本切换过程中，移动终端从源网络切换到目标网络后，源网络的资源释放由终端的网络锚点发起；在优化切换过程中，移动终端从源网络切换到目标网络后，源网络资源的释放由源网络的MME发起。For example, in the current standard, for the handover between the 3GPP network and the non-3GPP network, two handover types are provided: basic handover and optimized handover. The basic handover is mainly to satisfy the terminal that the service can be handed over to the target network smoothly, without guaranteeing seamlessness and losslessness. The optimized handover is to optimize the handover, and make the handover between heterogeneous networks faster according to the actual layout scene, so as to realize the seamless and lossless handover. In the basic handover process, after the mobile terminal switches from the source network to the target network, the resource release of the source network is initiated by the network anchor of the terminal; in the optimized handover process, after the mobile terminal switches from the source network to the target network, the resource release of the source network The release of is initiated by the MME of the source network.
然而，在无线网络中，如果同时存在基本切换与优化切换(一些终端使用基本切换方式，而另一些终端使用优化切换方式)就会导致网络锚点无法确定哪些用户需要由自身发起承载释放，而哪些用户不需要由自身发起承载释放。However, in a wireless network, if there are basic handover and optimized handover at the same time (some terminals use the basic handover mode, while others use the optimized handover mode), the network anchor cannot determine which users need to initiate bearer release by itself, and Which users do not need to initiate bearer release by themselves.
发明内容Contents of the invention
有鉴于此，本发明实施例提供一种在切换过程中发起源网络承载释放的方法、系统及网络锚点。In view of this, the embodiments of the present invention provide a method, a system and a network anchor point for initiating the release of the source network bearer during the handover process.
本发明实施例提供一种切换过程中发起源网络承载释放的方法，包含以下步骤：An embodiment of the present invention provides a method for releasing a source network bearer during a handover process, including the following steps:
网络锚点接收目标网络控制面管理实体发送的指示参数，所述指示参数用于指示网络锚点是否在终端切换到目标网络后发起源网络的承载释放；The network anchor receives an indication parameter sent by the target network control plane management entity, where the indication parameter is used to indicate whether the network anchor initiates the bearer release of the source network after the terminal switches to the target network;
所述网络锚点根据接收到的所述指示参数确定是否在终端切换到目标网络后发起源网络的承载释放。The network anchor determines whether to initiate the bearer release of the source network after the terminal switches to the target network according to the received indication parameter.
本发明实施例还提供一种切换过程中发起源网络承载释放的方法，包含以下步骤：The embodiment of the present invention also provides a method for releasing the source network bearer during the handover process, which includes the following steps:
在网络锚点上静态配置或由网络锚点动态获取接入类型的变化与终端切换后承载释放方式的对应关系；Statically configured on the network anchor point or dynamically obtained by the network anchor point, the corresponding relationship between the change of the access type and the bearer release mode after the terminal is switched;
获取源网络的接入类型和目标网络的接入类型；Obtain the access type of the source network and the access type of the target network;
根据所述获取的源网络的接入类型和目标网络的接入类型以及所述以及所述对应关系，确定是否在终端切换到目标网络后发起源网络的承载释放。According to the obtained access type of the source network, the access type of the target network and the corresponding relationship, determine whether to initiate the bearer release of the source network after the terminal is handed over to the target network.
本发明实施例还提供一种切换过程中发起源网络承载释放的系统，所述系统包括：The embodiment of the present invention also provides a system for initiating source network bearer release during the handover process, and the system includes:
目标网络控制面管理实体，用于向网络锚点发送指示参数，所述指示参数指示网络锚点是否在终端切换到目标网络后发起源网络的承载释放；The target network control plane management entity is configured to send an indication parameter to the network anchor, where the indication parameter indicates whether the network anchor initiates the bearer release of the source network after the terminal switches to the target network;
网络锚点，用于根据收到的所述指示参数确定是否在终端切换到目标网络后发起源网络的承载释放过程。The network anchor point is used to determine whether to initiate the bearer release process of the source network after the terminal switches to the target network according to the received indication parameter.
本发明实施例还一种网络锚点，所述网络锚点包括：An embodiment of the present invention also provides a network anchor, where the network anchor includes:
获取单元，用于获取目标网络控制面管理实体发送的指示参数，所述指示参数用于指示网络锚点是否在终端切换到目标网络后发起源网络的承载释放；The acquiring unit is configured to acquire an indication parameter sent by a target network control plane management entity, where the indication parameter is used to indicate whether the network anchor initiates the bearer release of the source network after the terminal switches to the target network;
判断单元，用于根据所述获取单元获取的所述指示参数判断是否在终端切换到目标网络后发起源网络的承载释放。A judging unit, configured to judge whether to initiate bearer release of the source network after the terminal switches to the target network according to the indication parameter acquired by the acquiring unit.
一种网络锚点，其特征在于，所述网络锚点包括：A network anchor, characterized in that the network anchor comprises:
存储单元，用于存储接入类型的变化与终端切换后承载释放方式的对应关系；The storage unit is used to store the corresponding relationship between the change of the access type and the bearer release mode after the terminal is switched;
获取单元，用于获取源网络的接入类型和目标网络的接入类型；an acquiring unit, configured to acquire the access type of the source network and the access type of the target network;
判断单元，用于根据所述获取单元获取的源网络的接入类型和目标网络的接入类型，以及所述存储单元存储的所述对应关系，判断所述网络锚点是否在终端切换到目标网络后发起源网络的承载释放。A judging unit, configured to judge whether the network anchor is switched to the target network at the terminal according to the access type of the source network and the access type of the target network acquired by the acquiring unit, and the corresponding relationship stored in the storage unit. The network post-initiates the bearer release of the source network.
较现有技术相比，通过本发明实施例提供的在切换过程中发起源网络承载释放的方法、系统及网络锚点可以确定哪些终端的切换需要由网络锚点发起源网络的承载释放，哪些不需要由网络锚点发起源网络的承载释放。不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。Compared with the prior art, the method, system and network anchor point provided by the embodiment of the present invention for initiating source network bearer release during the handover process can determine which terminals need to be released by the network anchor point to initiate the source network bearer release, and which The bearer release from the source network need not be initiated by the network anchor. It not only solves the bearer release problem of the source network in the network where basic handover and optimized handover exist at the same time, optimizes the performance of the network, but also makes the network formation and operation of the operator more flexible.
附图说明Description of drawings
图1为本发明方法实施例一的流程示意图。Fig. 1 is a schematic flow chart of Embodiment 1 of the method of the present invention.
图2为本发明方法实施例二的流程示意图。Fig. 2 is a schematic flow chart of the second embodiment of the method of the present invention.
图3为本发明方法实施例三的流程示意图。Fig. 3 is a schematic flow chart of the third embodiment of the method of the present invention.
图4为本发明方法实施例四的流程示意图。Fig. 4 is a schematic flow chart of Embodiment 4 of the method of the present invention.
图5为本发明方法实施例五的流程示意图。Fig. 5 is a schematic flow chart of Embodiment 5 of the method of the present invention.
图6为本发明方法实施例六的流程示意图。Fig. 6 is a schematic flow chart of Embodiment 6 of the method of the present invention.
具体实施方式Detailed ways
本发明实施例提供一种切换过程中发起源网络承载释放的方法，该方法包括以下步骤：An embodiment of the present invention provides a method for releasing a source network bearer during a handover process, the method including the following steps:
网络锚点接收目标网络控制面管理实体发送的指示参数，该指示参数用于指示网络锚点是否在终端切换到目标网络后发起源网络的承载释放；The network anchor receives an indication parameter sent by the target network control plane management entity, and the indication parameter is used to indicate whether the network anchor initiates the bearer release of the source network after the terminal switches to the target network;
该网络锚点根据接收到的指示参数确定是否在终端切换到目标网络后发起源网络的承载释放。The network anchor determines whether to initiate the bearer release of the source network after the terminal switches to the target network according to the received indication parameter.
该实施例中，网络锚点根据目标网络控制面管理实体发送的指示参数就可以确定哪些用户终端的切换需要由网络锚点发起源网络的承载释放，哪些不需要由网络锚点发起源网络的承载释放。这样，不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, the network anchor can determine which user terminal handover needs to be initiated by the network anchor to release the bearer of the source network according to the indication parameters sent by the target network control plane management entity, and which user terminals do not need to be initiated by the network anchor. Bearer release. In this way, it not only solves the bearer release problem of the source network in the network where basic handover and optimized handover exist simultaneously, but also optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
以下结合附图和具体实施方式对本发明做进一步详细的说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
图1为本发明实施例一的流程示意图。以下结合图1对该实施例进行详细的描述：FIG. 1 is a schematic flow chart of Embodiment 1 of the present invention. Below in conjunction with Fig. 1 this embodiment is described in detail:
步骤101，终端接入源网络，通过网络锚点进行业务访问。Step 101, the terminal accesses the source network, and performs service access through the network anchor point.
本步骤中，终端接入的源网络可以是3GPP网络(例如，UMTS网络)，也可以是非3GPP网络(例如，WLAN网络或WIMAX网络)。通常，该网络锚点可以是一个PDN GW(Packet Data Network Gateway，分组数据网网关)。In this step, the source network accessed by the terminal may be a 3GPP network (for example, a UMTS network), or a non-3GPP network (for example, a WLAN network or a WIMAX network). Usually, the network anchor point can be a PDN GW (Packet Data Network Gateway, packet data network gateway).
步骤102，发起从源网络到目标网络的切换流程。Step 102, initiate a handover process from the source network to the target network.
本步骤中，终端或网络侧发起的从源网络到目标网络的切换流程可以是基本切换流程或者优化切换流程。In this step, the handover process from the source network to the target network initiated by the terminal or the network side may be a basic handover process or an optimized handover process.
需要说明地是，该基本切换或者优化切换主要是指异质网络之间的切换，如：3GPP网络与非3GPP网络之间的切换。当然，本发明实施例并不仅限于3GPP网络与非3GPP网络之间的切换，只要是异质网络之间的切换，都可以适用。It should be noted that the basic handover or optimized handover mainly refers to handover between heterogeneous networks, such as handover between a 3GPP network and a non-3GPP network. Certainly, the embodiment of the present invention is not limited to the handover between the 3GPP network and the non-3GPP network, as long as it is handover between heterogeneous networks, it is applicable.
其中，基本切换是指两个异质网络仅以网络锚点作为唯一的通信接口发生的切换。在此场景下，终端在切换到目标网络后，源网络的承载释放由网络锚点发起。优化切换是指两个异质网络除了网络锚点作为通信接口外，还使用其他实体之间的接口作为通信接口发生的切换。在此场景下，终端在切换到目标网络后，源网络的承载释放不是由网络锚点发起。Among them, the basic handover refers to the handover in which two heterogeneous networks only use the network anchor as the only communication interface. In this scenario, after the terminal switches to the target network, the bearer release of the source network is initiated by the network anchor. Optimal handover refers to the handover that occurs when two heterogeneous networks use the interface between other entities as the communication interface in addition to the network anchor as the communication interface. In this scenario, after the terminal switches to the target network, the bearer release of the source network is not initiated by the network anchor.
步骤103、目标网络控制面管理实体向网络锚点发送用户面切换请求消息。Step 103, the target network control plane management entity sends a user plane handover request message to the network anchor.
本步骤中，目标网络控制面管理实体发送用户面切换请求，要求网络锚点将终端的上下行用户面切换到目标网络。在该步骤中，可通过该用户面切换请求消息指示网络锚点是否发起源网络的承载释放。In this step, the control plane management entity of the target network sends a user plane switching request, requesting the network anchor to switch the uplink and downlink user planes of the terminal to the target network. In this step, the user plane handover request message may indicate whether the network anchor initiates the release of the bearer of the source network.
在该步骤中，通过该用户面切换请求消息指示网络锚点是否发起源网络的承载释放可以采用多种方式实现：In this step, the user plane handover request message indicates whether the network anchor initiates the bearer release of the source network, which can be implemented in various ways:
例如，可以在该用户面切换请求消息中携带直接指示参数，用来直接指示网络锚点是否发起源网络的承载释放。比如，如果是基本切换，则该直接指示参数可以设置为“要求释放”，即：要求网络锚点在终端切换到目标网络后发起源网络的承载释放；如果是优化切换，则该直接指示参数可以设置为“不要求释放”，即：要求网络锚点在终端切换到目标网络后不要发起源网络的承载释放。For example, a direct indication parameter may be carried in the user plane handover request message to directly indicate whether the network anchor initiates the bearer release of the source network. For example, if it is a basic handover, the direct indication parameter can be set to "require release", that is, the network anchor is required to initiate the bearer release of the source network after the terminal is handed over to the target network; if it is an optimized handover, the direct indication parameter It can be set to "do not require release", that is, the network anchor point is required not to initiate the bearer release of the source network after the terminal switches to the target network.
或者，还可以在该用户面切换请求消息中携带切换类型参数。其中，该切换类型参数标示终端进行的是基本切换或优化切换。这样，网络锚点就可以根据用户面切换请求消息中携带切换类型参数获知终端当前进行的是基本切换还是优化切换，并进一步确定是否需要在终端切换到目标网络后发起源网络的承载释放。Alternatively, a handover type parameter may also be carried in the user plane handover request message. Wherein, the handover type parameter indicates whether the terminal performs basic handover or optimized handover. In this way, the network anchor can know whether the terminal is currently performing a basic handover or an optimized handover according to the handover type parameter carried in the user plane handover request message, and further determine whether it is necessary to initiate the bearer release of the source network after the terminal handovers to the target network.
本领域人员可以理解地是，在某些网络架构中，目标网络控制面管理实体与网络锚点进行交互的过程可能需要经过服务网关(Serving GW)。Those skilled in the art can understand that in some network architectures, the process of interaction between the target network control plane management entity and the network anchor point may need to go through a serving gateway (Serving GW).
步骤104、网络锚点向目标网络控制面管理实体返回用户面切换回应消息。Step 104, the network anchor returns a user plane handover response message to the target network control plane management entity.
本领域人员可以理解的是，在某些网络架构中，网络锚点向目标网络控制面管理实体返回的用户面切换回应消息，也可能需要经过服务网关。Those skilled in the art can understand that in some network architectures, the user plane handover response message returned by the network anchor to the target network control plane management entity may also need to go through the serving gateway.
步骤105、执行剩余的切换流程。Step 105, execute the rest of the handover process.
本步骤中，网络锚点根据收到的用户面切换请求消息中携带的直接指示参数或切换类型参数确定是否发起源网络的承载释放过程。如果网络锚点确定需要发起源网络的承载释放，该剩余切换流程还包括了网络锚点发起的源网络的承载释放过程。In this step, the network anchor determines whether to initiate the bearer release process of the source network according to the direct indication parameter or the handover type parameter carried in the received user plane handover request message. If the network anchor determines that it is necessary to initiate the release of the bearer of the source network, the remaining handover process also includes the process of releasing the bearer of the source network initiated by the network anchor.
本领域技术人员可以理解地是，本实施例中的目标网络控制面管理实体的功能在不同的网络架构中可以由不同的实体实现。例如，在3GPP网络中目标网络控制面管理实体为移动性管理实体MME或SGSN(服务通用分组无线业务支持节点，Serving GPRS Support Node)；在WIMAX网络中目标网络控制面管理实体为ASN GW(接入服务网络网关，Access Service NetworkGate Way)；在可信非3GPP(trusted non3GPP)网络中为HRPD AN(高速分组数据接入网，High Rate Packet Data Access Network)；在非可信非3GPP(untrusted non3GPP)网络中为ePDG(演进分组数据网关，Evolved PacketData Gateway)。Those skilled in the art can understand that the function of the target network control plane management entity in this embodiment may be implemented by different entities in different network architectures. For example, in the 3GPP network, the target network control plane management entity is the mobility management entity MME or SGSN (Serving GPRS Support Node); in the WIMAX network, the target network control plane management entity is the ASN GW (connection Incoming service network gateway, Access Service NetworkGate Way); in trusted non-3GPP (trusted non3GPP) network, it is HRPD AN (high-speed packet data access network, High Rate Packet Data Access Network); in untrusted non-3GPP (untrusted non3GPP) network ) network is ePDG (Evolved Packet Data Gateway, Evolved Packet Data Gateway).
在本实施例中，通过用户面切换请求消息中携带的直接指示参数或切换类型参数就可以确定哪些终端的切换需要由网络锚点发起源网络的承载释放，哪些不需要由网络锚点发起源网络的承载释放。这样，不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, it can be determined which terminal handover needs to be initiated by the network anchor point to initiate the bearer release of the network through the direct indication parameter or handover type parameter carried in the user plane handover request message, and which terminals do not need to be initiated by the network anchor point. Network bearer release. In this way, it not only solves the bearer release problem of the source network in the network where basic handover and optimized handover exist simultaneously, but also optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
本领域技术人员可以理解地是，如果网络锚点被设置了一种默认的源网络承载释放控制方式；那么，与该默认控制方式对应的切换过程中就可以不携带指示参数给网络锚点了。例如：如果网络锚点默认在终端切换到目标网络后发起源网络的承载释放，则终端进行基本切换时，目标网络控制面管理实体就可以不携带指示参数给网络锚点；在终端进行优化切换时，目标网络控制面管理实体携带指示参数给网络锚点。如果网络锚点默认在终端切换到目标网络后不发起源网络的承载释放，则终端在进行优化切换时，目标网络控制面管理实体可以不携带指示给网络锚点；而终端在进行基本切换时，目标网络控制面管理实体需要携带指示参数给网络锚点。Those skilled in the art can understand that if the network anchor point is set with a default source network bearer release control mode; then, the indication parameter may not be carried to the network anchor point during the handover process corresponding to the default control mode . For example: if the network anchor initiates the bearer release of the source network by default after the terminal switches to the target network, when the terminal performs a basic handover, the management entity of the control plane of the target network does not need to carry the indication parameter to the network anchor; the optimal handover is performed on the terminal When , the target network control plane management entity carries the indication parameter to the network anchor. If the network anchor does not initiate the bearer release of the source network by default after the terminal switches to the target network, when the terminal performs an optimized handover, the target network control plane management entity may not carry an indication to the network anchor; while the terminal performs a basic handover , the target network control plane management entity needs to carry indication parameters to the network anchor.
当然，对于两种切换类型，在终端进行切换过程中，目标网络控制面管理实体都可以携带指示参数给网络锚点。Certainly, for the two handover types, during the handover process of the terminal, the management entity of the control plane of the target network can carry the indication parameter to the network anchor.
图2为本发明方法实施例二的流程示意图。如图2所示，本流程示意图为终端从3GPP网络向非3GPP网络切换的过程。以下结合图2对该实施例进行详细描述：Fig. 2 is a schematic flow chart of the second embodiment of the method of the present invention. As shown in FIG. 2 , the schematic flow diagram of this flow is a process of handover of a terminal from a 3GPP network to a non-3GPP network. Below in conjunction with Fig. 2 this embodiment is described in detail:
步骤201、终端接入3GPP网络，并通过PDN GW进行业务访问。Step 201, the terminal accesses the 3GPP network, and performs service access through the PDN GW.
步骤202、发起从3GPP网络到非3GPP网络的切换流程。Step 202: Initiate a handover process from the 3GPP network to the non-3GPP network.
本步骤中，终端或网络侧发起的切换流程可以是基本切换流程或优化切换流程。In this step, the handover process initiated by the terminal or the network side may be a basic handover process or an optimized handover process.
步骤203、非3GPP aGW(Non 3GPP access GateWay，非3GPP接入网关)向PDN GW发送代理绑定更新消息。Step 203, the non-3GPP aGW (Non 3GPP access GateWay, non-3GPP access gateway) sends a proxy binding update message to the PDN GW.
本领域技术人员可以理解地是，非3GPP aGW可以是：在Wimax网络中的ASN GW(接入服务网络网关，Access Service Network Gate Way)或者在可信非3GPP(trusted non3GPP)网络中的HRPD AN(高速分组数据接入网，High Rate Packet Data Access Network)或者在非可信非3GPP(untrustednon3GPP)网络中的ePDG(演进分组数据网关，Evolved Packet DataGateway)。Those skilled in the art can understand that the non-3GPP aGW can be: an ASN GW (Access Service Network Gateway, Access Service Network Gate Way) in a Wimax network or an HRPD AN in a trusted non-3GPP (trusted non3GPP) network (High Rate Packet Data Access Network, High Rate Packet Data Access Network) or ePDG (Evolved Packet Data Gateway, Evolved Packet Data Gateway) in an untrusted non-3GPP (untrustednon3GPP) network.
本步骤中，非3GPP aGW确定需要通知PDN GW切换终端的上下行用户面到非3GPP网络时，向PDN GW发送代理绑定更新消息。同时，在该代理绑定更新消息中携带指示参数，用来指示PDN GW是否发起源网络的承载释放。In this step, when the non-3GPP aGW determines that it is necessary to notify the PDN GW to switch the uplink and downlink user planes of the terminal to a non-3GPP network, it sends a proxy binding update message to the PDN GW. At the same time, an indication parameter is carried in the proxy binding update message, which is used to indicate whether the PDN GW initiates the bearer release of the source network.
通过该代理绑定更新消息指示PDN GW是否发起源网络的承载释放可以采用多种方式实现：Instructing the PDN GW whether to initiate the bearer release of the source network through the proxy binding update message can be implemented in various ways:
例如，可以在该代理绑定更新消息中携带直接指示参数，用来直接指示PDN GW是否发起源网络的承载释放。如果是基本切换，则该直接指示参数可以设置为“要求释放”，即：要求PDN GW在终端切换到目标网络后发起源网络的承载释放；如果是优化切换，则该直接指示参数可以设置为“不要求释放”，即：要求PDN GW在终端切换到目标网络后不要发起源网络的承载释放。For example, a direct indication parameter may be carried in the proxy binding update message to directly indicate whether the PDN GW initiates the bearer release of the source network. If it is a basic handover, then the direct indication parameter can be set to "request release", that is: the PDN GW is required to initiate the release of the bearer of the source network after the terminal is handed over to the target network; if it is an optimized handover, then the direct indication parameter can be set to "Release is not required", that is, the PDN GW is required not to initiate the bearer release of the source network after the terminal switches to the target network.
或者，还可以在该代理绑定更新消息中携带切换类型参数。这样，PDNGW就可以根据该切换类型参数获知当前进行的切换类型是基本切换还是优化切换，并进一步确定是否需要在终端切换到目标网络后发起源网络的承载释放。Alternatively, a switch type parameter may also be carried in the proxy binding update message. In this way, the PDNGW can know whether the current handover type is basic handover or optimized handover according to the handover type parameter, and further determine whether it is necessary to initiate the bearer release of the source network after the terminal is handed over to the target network.
以上通过代理绑定更新消息中携带指示参数用于指示PDN GW是否发起源网络的承载释放的方法，在具体实现时可以在代理绑定更新消息中扩展一个Mobility Option(移动选项)，其结构举例如下：The above method of carrying the indication parameter in the proxy binding update message is used to indicate whether the PDN GW initiates the bearer release of the source network. In the specific implementation, a Mobility Option (mobility option) can be extended in the proxy binding update message. The structure is an example as follows:
0 1 2 3 40 1 2 2 3 3 4
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+-+-+-+-+-+-+
|Option Type |Option Length |Option Data.....................|Option Type |Option Length |Option Data..........................
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- +-+-+-+-+-+-+-+
其中，0、1、2、3和4分别表示第一个字节到第四个字节。Option type为选项类型，占第一个字节，其具体数值有待于IANA(因特网地址分配组织，Internet Assigned Number Authority)定义；Option Length为选项长度，占第二个字节，确定了Option Data的长度；Option Data为选项数据，即：用来指示PDN GW是否发起源网络承载释放的指示参数。其中，该OptionData占用的字节数可变，可以占用一个或多个字节长度。Among them, 0, 1, 2, 3 and 4 represent the first byte to the fourth byte respectively. Option type is the option type, occupying the first byte, and its specific value is to be defined by IANA (Internet Assigned Number Authority); Option Length is the option length, occupying the second byte, which determines the Option Data Length; Option Data is option data, that is, an indication parameter used to indicate whether the PDN GW initiates the release of the source network bearer. Wherein, the number of bytes occupied by the OptionData is variable, and may occupy one or more bytes in length.
204、PDN GW返回代理绑定回应消息给非3GPP aGW。204. The PDN GW returns a Proxy Binding Response message to the non-3GPP aGW.
205、执行剩余的切换流程。205. Execute the rest of the switching process.
本步骤中，PDN GW根据收到的代理绑定更新消息中携带的指示参数(直接指示参数或切换类型参数)确定是否发起源网络的承载释放过程。如果PDN GW确定需要发起源网络的承载释放，该剩余切换流程还包括了源网络的承载释放过程。In this step, the PDN GW determines whether to initiate the bearer release process of the source network according to the indication parameter (direct indication parameter or handover type parameter) carried in the received proxy binding update message. If the PDN GW determines that it is necessary to initiate the bearer release of the source network, the remaining handover process also includes the bearer release process of the source network.
本实施例中，通过代理绑定更新消息中携带的直接指示参数或切换类型参数就可以确定哪些终端的切换需要由PDN GW发起源网络的承载释放，哪些不需要由PDN GW发起源网络的承载释放。这样，不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, the direct indication parameter or the handover type parameter carried in the proxy binding update message can determine which terminals need to be released by the PDN GW to initiate the bearer release of the source network, and which ones do not need to be initiated by the PDN GW. freed. In this way, it not only solves the bearer release problem of the source network in the network where basic handover and optimized handover exist simultaneously, but also optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
与实施例一类似，如果做为网络锚点的PDN GW默认定义了一种承载释放控制方式；那么，与此默认控制方式对应的切换过程中就可以不携带指示参数给网络锚点PDN GW了。Similar to Embodiment 1, if the PDN GW as the network anchor defines a bearer release control mode by default; then, the indication parameter may not be carried to the network anchor PDN GW during the handover process corresponding to the default control mode .
图3为本发明方法实施例三的流程示意图。如图3所示，本流程示意图为终端从非3GPP网络切换到3GPP网络的过程。以下结合图3对该实施例进行详细描述：Fig. 3 is a schematic flow chart of the third embodiment of the method of the present invention. As shown in FIG. 3 , the schematic flow diagram of this flow is a process in which a terminal switches from a non-3GPP network to a 3GPP network. Below in conjunction with Fig. 3 this embodiment is described in detail:
步骤301、终端接入非3GPP网络，通过PDN GW进行业务访问。Step 301, the terminal accesses the non-3GPP network, and performs service access through the PDN GW.
步骤302、发起非3GPP网络到3GPP网络的切换流程。Step 302: Initiate a handover procedure from the non-3GPP network to the 3GPP network.
本步骤中，终端或网络侧发起的切换流程可以是基本切换流程或优化切换流程。In this step, the handover process initiated by the terminal or the network side may be a basic handover process or an optimized handover process.
步骤303、目标网络的MME向服务网关发送建立承载请求消息。Step 303, the MME of the target network sends a bearer establishment request message to the serving gateway.
本步骤中，当目标网络的MME确定需要通知PDN GW将终端的上下行用户面切换到3GPP网络时，向服务网关发送建立承载请求消息。此时，可以在该建立承载请求消息中携带指示参数，用来指示PDN GW是否发起源网络的承载释放。In this step, when the MME of the target network determines that it is necessary to notify the PDN GW to switch the uplink and downlink user planes of the terminal to the 3GPP network, it sends a bearer establishment request message to the serving gateway. At this time, an indication parameter may be carried in the bearer establishment request message to indicate whether the PDN GW initiates the release of the bearer of the source network.
通过该建立承载请求消息指示PDN GW是否发起源网络的承载释放可以采用多种方式实现：Instructing the PDN GW whether to initiate the bearer release of the source network through the bearer establishment request message can be implemented in various ways:
例如，可以在该建立承载请求消息中携带直接指示参数，用来直接指示PDN GW是否发起源网络的承载释放。如果是基本切换，则该直接指示参数可以设置为“要求释放”，即：要求PDN GW在终端切换到目标网络后发起源网络的承载释放；如果是优化切换，则该直接指示参数可以设置为“不要求释放”，即：要求PDN GW在终端切换到目标网络后不要发起源网络的承载释放。For example, a direct indication parameter may be carried in the bearer establishment request message to directly indicate whether the PDN GW initiates the release of the bearer of the source network. If it is a basic handover, then the direct indication parameter can be set to "request release", that is: the PDN GW is required to initiate the release of the bearer of the source network after the terminal is handed over to the target network; if it is an optimized handover, then the direct indication parameter can be set to "Release is not required", that is, the PDN GW is required not to initiate the bearer release of the source network after the terminal switches to the target network.
或者，还可以在该建立承载请求消息中携带切换类型参数。这样，PDNGW就可以根据该切换类型参数获知当前进行的是基本切换还是优化切换，并进一步确定是否需要在终端切换到目标网络后发起源网络的承载释放。Alternatively, the switch type parameter may also be carried in the bearer establishment request message. In this way, the PDNGW can know whether the current handover is a basic handover or an optimized handover according to the handover type parameter, and further determine whether it is necessary to initiate the bearer release of the source network after the terminal is handed over to the target network.
步骤304、服务网关发送向PDN GW发送建立承载请求消息。Step 304, the serving gateway sends a bearer establishment request message to the PDN GW.
本步骤中，服务网关在收到目标网络的MME发送来的建立承载请求消息后，向PDN GW发送建立承载请求消息，要求PDN GW切换上下行用户面到3GPP网络。需要说明地是，将目标网络的MME发送来的建立承载请求消息中的指示参数携带在服务网关发送向PDN GW发送的建立承载请求消息中。PDN GW收到服务网关发送的建立承载请求消息后，根据服务网关发送的建立承载请求消息中携带的指示参数，确定是否在终端切换到目标网络后发起非3GPP网络的承载释放。In this step, after receiving the establishment bearer request message sent by the MME of the target network, the serving gateway sends the establishment bearer request message to the PDN GW, requesting the PDN GW to switch the uplink and downlink user planes to the 3GPP network. It should be noted that the indication parameter in the bearer establishment request message sent by the MME of the target network is carried in the bearer establishment request message sent by the serving gateway to the PDN GW. After receiving the bearer establishment request message sent by the serving gateway, the PDN GW determines whether to initiate the bearer release of the non-3GPP network after the terminal switches to the target network according to the indication parameters carried in the bearer establishment request message sent by the serving gateway.
需要说明地是，本步骤中服务网关可以向PDN GW发送代理绑定更新消息，并在该代理绑定更新消息携带指示参数。例如，可以在代理绑定更新消息中扩展一个Mobility Option(移动选项)来携带该指示参数。具体实现方法可参见实施例2中的描述，不再赘述。It should be noted that in this step, the serving gateway may send a proxy binding update message to the PDN GW, and carry an indication parameter in the proxy binding update message. For example, a Mobility Option (mobility option) may be extended in the proxy binding update message to carry the indication parameter. For a specific implementation method, reference may be made to the description in Embodiment 2, and details are not repeated here.
步骤305、PDN GW返回建立承载回应消息给服务网关。In step 305, the PDN GW returns a bearer establishment response message to the serving gateway.
当然，如果步骤304中服务网关发送的是代理绑定更新消息，本步骤中PDN GW返回的就是代理绑定回应消息。Certainly, if the service gateway sends the proxy binding update message in step 304, what the PDN GW returns in this step is the proxy binding response message.
步骤306、服务网关发送建立承载回应消息给目标网络的MME。Step 306, the serving gateway sends a bearer establishment response message to the MME of the target network.
步骤307、执行剩余的优化切换过程。Step 307: Execute the rest of the optimal switching process.
本步骤与实施例二中的205类似，不再赘述。This step is similar to step 205 in Embodiment 2 and will not be repeated here.
与实施例一类似，如果作为网络锚点的PDN GW默认定义了一种承载释放控制方式；那么，与此默认控制方式对应的切换过程中就可以不携带指示参数给PDN GW了。Similar to Embodiment 1, if the PDN GW as the network anchor defines a bearer release control mode by default; then, the indication parameter may not be carried to the PDN GW during the handover process corresponding to the default control mode.
本实施例中，通过建立承载请求消息或代理绑定更新消息中携带的直接指示参数或切换类型参数就可以确定哪些终端的切换需要由PDN GW发起源网络的承载释放，哪些不需要由PDN GW发起源网络的承载释放。这样，不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, it can be determined which terminals need to be released by the PDN GW to initiate the bearer release of the source network by the direct indication parameter or the handover type parameter carried in the bearer establishment request message or the proxy binding update message, and which ones do not need to be released by the PDN GW. Initiates the bearer release of the source network. In this way, it not only solves the bearer release problem of the source network in the network where basic handover and optimized handover exist simultaneously, but also optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
图4为本发明方法实施例四的流程示意图。本实施例中，在网络锚点上保存接入类型的变化与终端切换到目标网络后承载释放方式的对应关系，例如：当切换时的接入技术从E-UTRAN(Evolved UMTS Territorial Radio AccessNetwork，演进的UMTS陆地无线接入网)到IWLAN(Interworking WirelessLocal Area Network，无线局域网互联)，则对应的终端切换到目标网络后承载释放方式为网络锚点发起到E-UTRAN的承载释放。其中，该接入类型可以包括接入技术类型(RAT Type，Radio access technology Type)和/或IP-CAN类型(IP Connectivity Access Network Type)。Fig. 4 is a schematic flow chart of Embodiment 4 of the method of the present invention. In this embodiment, the corresponding relationship between the change of the access type and the bearer release mode after the terminal switches to the target network is stored on the network anchor point, for example: when switching, the access technology changes from E-UTRAN (Evolved UMTS Territorial Radio AccessNetwork, Evolved UMTS terrestrial wireless access network) to IWLAN (Interworking Wireless Local Area Network, wireless local area network interconnection), then the bearer release method after the corresponding terminal switches to the target network is the bearer release method initiated by the network anchor point to E-UTRAN. Wherein, the access type may include an access technology type (RAT Type, Radio access technology Type) and/or an IP-CAN type (IP Connectivity Access Network Type).
本实施例中，接入类型的变化与终端切换到目标网络后承载释放方式的对应关系可以是静态配置在网络锚点上的，也可以动态获取。例如：PDN GW可以通过与归属用户服务器HSS或授权、验证和计费服务器AAA Server或域名服务器DNS或其他数据存储服务器交互，动态获取该接入类型的变化与终端切换到目标网络后承载释放方式的对应关系。In this embodiment, the correspondence between the change of the access type and the bearer release mode after the terminal switches to the target network may be statically configured on the network anchor point, or may be dynamically acquired. For example: PDN GW can dynamically obtain the change of the access type and the bearer release mode after the terminal switches to the target network by interacting with the home user server HSS or the authorization, authentication and accounting server AAA Server or domain name server DNS or other data storage servers corresponding relationship.
以下结合图4对该实施例进行详细描述：Below in conjunction with Fig. 4 this embodiment is described in detail:
步骤401-402、与实施例一中的步骤101-102类似，不再赘述。Steps 401-402 are similar to steps 101-102 in Embodiment 1, and will not be repeated here.
步骤403、目标网络控制面管理实体与网络锚点进行信令交互，要求网络锚点切换终端的上下行用户面到目标网络。Step 403, the target network control plane management entity performs signaling interaction with the network anchor point, requesting the network anchor point to switch the uplink and downlink user planes of the terminal to the target network.
步骤404、网络锚点判断是否在终端切换到目标网络后发起源网络的承载释放。Step 404, the network anchor judges whether to initiate the bearer release of the source network after the terminal is handed over to the target network.
本步骤中，网络锚点获取源网络的接入类型和目标网络的接入类型，并根据该获取的源网络的接入类型和目标网络的接入类型，以及接入类型的变化与终端切换到目标网络后承载释放方式的对应关系，确定是否在终端切换到目标网络后发起源网络的承载释放。In this step, the network anchor obtains the access type of the source network and the access type of the target network, and according to the obtained access type of the source network and the access type of the target network, as well as the change of the access type and the terminal switching The corresponding relationship of the bearer release mode after arriving at the target network determines whether to initiate the bearer release of the source network after the terminal switches to the target network.
需要说明地是，当终端接入源网络时，源网络的控制面管理实体或PCRF(Policy Control Rule Function策略控制规则)会将接入类型通知PDN GW。所以，PDN GW是可以知道源网络的接入类型信息的。It should be noted that when the terminal accesses the source network, the control plane management entity or PCRF (Policy Control Rule Function) of the source network will notify the PDN GW of the access type. Therefore, the PDN GW can know the access type information of the source network.
在切换过程中，目标网络的控制面管理实体可以将目标网络的接入类型通知PDN GW，或者PCRF将接入类型通知PDN GW。所以，PDN GW也可以知道目标网络的接入类型信息。During the handover process, the control plane management entity of the target network may notify the PDN GW of the access type of the target network, or the PCRF may notify the PDN GW of the access type. Therefore, the PDN GW can also know the access type information of the target network.
需要说明地是，步骤403与步骤404没有严格的时序关系。It should be noted that step 403 and step 404 do not have a strict time sequence relationship.
步骤405、执行剩余的切换流程。Step 405, Execute the rest of the switching process.
本步骤与实施例一中的步骤105类似，不再赘述。This step is similar to step 105 in Embodiment 1, and will not be repeated here.
本实施例中，通过在网络锚点上静态配置或由网络锚点动态获取接入类型的变化与切换后承载释放方式的对应关系，网络锚点就可以根据源网络的接入类型和目标网络的接入类型确定是否在终端切换到目标网络后发起源网络的承载释放。这样，就可以确定哪些终端的切换需要由网络锚点发起源网络的承载释放，哪些不需要由网络锚点发起源网络的承载释放。这不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, by statically configuring on the network anchor point or dynamically obtaining the corresponding relationship between the change of the access type and the bearer release mode after switching, the network anchor point can The access type of determines whether to initiate the bearer release of the source network after the terminal is handed over to the target network. In this way, it can be determined which terminal handovers need to be initiated by the network anchor to release the bearer of the source network, and which terminals do not need to be initiated by the network anchor to release the bearer of the source network. This not only solves the bearer release problem of the source network in the network where both basic handover and optimized handover exist, and optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
图5为本发明方法实施例五的流程示意图，如图5所示，本实施例为终端从3GPP网络切换到非3GPP网络的过程。本实施例中，在PDN GW上静态配置或PDN GW动态获取接入类型的变化与终端切换到目标网络后承载释放方式的对应关系。其中，该接入类型可以包括接入技术类型(RAT Type)和/或IP-CAN类型。FIG. 5 is a schematic flowchart of Embodiment 5 of the method of the present invention. As shown in FIG. 5 , this embodiment is a process in which a terminal switches from a 3GPP network to a non-3GPP network. In this embodiment, the corresponding relationship between the change of the access type and the bearer release mode after the terminal switches to the target network is statically configured on the PDN GW or dynamically acquired by the PDN GW. Wherein, the access type may include an access technology type (RAT Type) and/or an IP-CAN type.
本实施例中，PDN GW可以通过与归属用户服务器HSS或授权、验证和计费服务器AAA Server或域名服务器DNS或其他数据存储服务器的交互，动态获取接入类型的变化与终端切换到目标网络后承载释放方式的对应关系。In this embodiment, the PDN GW can dynamically obtain the change of the access type and the information after the terminal switches to the target network by interacting with the home subscriber server HSS or the authorization, verification and accounting server AAA Server or the domain name server DNS or other data storage servers. Correspondence between bearer release modes.
以下结合图5对该实施例进行详细描述：Below in conjunction with Fig. 5 this embodiment is described in detail:
步骤501-502与实施例二中的步骤202-203类似，不再赘述。Steps 501-502 are similar to steps 202-203 in Embodiment 2, and will not be repeated here.
步骤503、Non 3GPP aGW与PDN GW进行信令交互，要求PDN GW切换终端的上下行用户面到非3GPP网络。Step 503, the Non 3GPP aGW performs signaling interaction with the PDN GW, requiring the PDN GW to switch the uplink and downlink user planes of the terminal to the non-3GPP network.
步骤504、PDN GW根据3GPP网络(即：源网络)和非3GPP网络(即：目标网络)的接入类型，以及接入类型的变化与终端切换到目标网络后承载释放方式的对应关系，确定是否需要在终端切换到非3GPP网络后由PDNGW发起3GPP网络的承载释放。Step 504, the PDN GW determines according to the access types of the 3GPP network (i.e. the source network) and the non-3GPP network (i.e. the target network) and the corresponding relationship between the change of the access type and the bearer release mode after the terminal switches to the target network Whether it is necessary for the PDNGW to initiate the bearer release of the 3GPP network after the terminal switches to a non-3GPP network.
需要说明地是，步骤503与步骤504没有严格的时序关系。It should be noted that there is no strict timing relationship between step 503 and step 504 .
步骤505、执行剩余的切换流程。Step 505, execute the rest of the switching process.
该步骤与实施例二中的步骤205类似，不再赘述。This step is similar to step 205 in Embodiment 2, and will not be repeated here.
本实施例中，在PDN GW上静态配置或PDN GW动态获取接入类型的变化与切换后承载释放方式的对应关系，PDN GW就可以根据源网络的接入类型和目标网络的接入类型确定是否在终端切换到目标网络后发起源网络的承载释放。这样，就可以确定哪些终端的切换需要由PDN GW发起源网络的承载释放，哪些不需要由PDN GW发起源网络的承载释放。这不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, the corresponding relationship between the change of the access type and the bearer release mode after handover is statically configured on the PDN GW or dynamically obtained by the PDN GW, and the PDN GW can determine the access type according to the access type of the source network and the access type of the target network. Whether to initiate the bearer release of the source network after the terminal switches to the target network. In this way, it can be determined which terminal handovers need to be released by the PDN GW from the source network, and which ones do not need to be released from the source network by the PDN GW. This not only solves the bearer release problem of the source network in the network where both basic handover and optimized handover exist, and optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
图6为本发明方法实施例六的流程示意图。如图6所示，本实施例为终端从非3GPP网络切换到3GPP网络的过程。本实施例中，在PDN GW上静态配置或PDN GW动态获取接入类型的变化与终端切换到目标网络后承载释放方式的对应关系。其中，该接入类型可以包括接入技术类型(RAT Type)和/或IP-CAN类型。Fig. 6 is a schematic flow chart of Embodiment 6 of the method of the present invention. As shown in FIG. 6 , this embodiment is a process in which a terminal switches from a non-3GPP network to a 3GPP network. In this embodiment, the corresponding relationship between the change of the access type and the bearer release mode after the terminal switches to the target network is statically configured on the PDN GW or dynamically acquired by the PDN GW. Wherein, the access type may include an access technology type (RAT Type) and/or an IP-CAN type.
本实施例中，PDN GW可以通过与归属用户服务器HSS或授权、验证和计费服务器AAA Server或域名服务器DNS或其他数据存储服务器的交互，动态获取接入类型的变化与终端切换到目标网络后承载释放方式的对应关系。In this embodiment, the PDN GW can dynamically obtain the change of the access type and the information after the terminal switches to the target network by interacting with the home subscriber server HSS or the authorization, verification and accounting server AAA Server or the domain name server DNS or other data storage servers. Correspondence between bearer release modes.
以下结合图6对该实施例进行详细描述：This embodiment is described in detail below in conjunction with FIG. 6:
步骤601-602与方法实施例二中的201-202类似，不再赘述。Steps 601-602 are similar to 201-202 in the second method embodiment, and will not be repeated here.
步骤603、目标网络的MME通过服务网关与PDN GW进行信令交互，要求PDN GW切换上下行用户面到3GPP网络。Step 603: The MME of the target network performs signaling interaction with the PDN GW through the serving gateway, requesting the PDN GW to switch the uplink and downlink user planes to the 3GPP network.
本步骤中目标网络的MME与PDN GW进行信令交互所采用的是承载建立请求/回应消息。In this step, the signaling exchange between the MME of the target network and the PDN GW uses bearer establishment request/response messages.
步骤604、PDN GW根据非3GPP网络的接入类型和3GPP网络的接入类型，以及接入类型的变化与终端切换到目标网络后承载释放方式的对应关系，确定是否需要在终端切换到目标网络后由PDN GW发起3GPP网络的承载释放。Step 604: The PDN GW determines whether it is necessary to switch the terminal to the target network according to the access type of the non-3GPP network and the access type of the 3GPP network, as well as the correspondence between the change of the access type and the bearer release mode after the terminal switches to the target network Afterwards, the PDN GW initiates the bearer release of the 3GPP network.
步骤605、执行剩余的切换流程。Step 605, execute the rest of the handover process.
该步骤与实施例二中的步骤205类似，不再赘述。This step is similar to step 205 in Embodiment 2, and will not be repeated here.
本实施例中，在PDN GW上静态配置或由PDN GW动态获取接入类型的变化与切换后承载释放方式的对应关系，PDN GW就可以根据源网络的接入类型和目标网络的接入类型确定是否在终端切换到目标网络后发起源网络的承载释放。这样，就可以确定哪些终端的切换需要由PDN GW发起源网络的承载释放，哪些不需要由PDN GW发起源网络的承载释放。这不仅解决了同时存在基本切换与优化切换的网络中源网络的承载释放问题，优化了网络的性能；也可以使运营商的组网、运营更加灵活。In this embodiment, the PDN GW is statically configured on the PDN GW or the PDN GW dynamically obtains the corresponding relationship between the change of the access type and the bearer release mode after handover, and the PDN GW can Determine whether to initiate bearer release of the source network after the terminal is handed over to the target network. In this way, it can be determined which terminal handovers need to be released by the PDN GW from the source network, and which ones do not need to be released from the source network by the PDN GW. This not only solves the bearer release problem of the source network in the network where both basic handover and optimized handover exist, and optimizes the performance of the network; it also makes the network formation and operation of the operator more flexible.
本发明提供一种在切换过程中源网络承载释放的系统实施例。该系统中包括：一目标网络控制面管理实体，一网络锚点。其中，The present invention provides a system embodiment for releasing the bearer of the source network during the switching process. The system includes: a target network control plane management entity, and a network anchor point. in,
目标网络控制面管理实体用于向网络锚点发送指示参数，该指示参数用于指示网络锚点是否在终端切换到目标网络后发起源网络的承载释放；The target network control plane management entity is used to send an indication parameter to the network anchor, where the indication parameter is used to indicate whether the network anchor initiates the bearer release of the source network after the terminal switches to the target network;
网络锚点用于根据收到的指示参数确定是否在终端切换到目标网络后发起源网络的承载释放过程。The network anchor is used to determine whether to initiate the bearer release process of the source network after the terminal switches to the target network according to the received indication parameters.
其中，该指示参数通过用户面切换请求消息携带，可以为直接指示参数或者切换类型参数。Wherein, the indication parameter is carried by the user plane handover request message, and may be a direct indication parameter or a handover type parameter.
本发明还提供一种网络锚点实施例。该网络锚点包括：The present invention also provides an embodiment of a network anchor point. The network anchors include:
获取单元，用于获取目标网络控制面管理实体发送的指示参数；其中，该指示参数用于指示网络锚点是否在终端切换到目标网络后发起源网络的承载释放。The acquiring unit is configured to acquire an indication parameter sent by the target network control plane management entity; wherein the indication parameter is used to indicate whether the network anchor initiates the bearer release of the source network after the terminal is handed over to the target network.
判断单元，用于根据获取单元所获取的指示参数判断是否在终端切换到目标网络后发起源网络的承载释放。The judging unit is configured to judge whether to initiate the bearer release of the source network after the terminal switches to the target network according to the indication parameter acquired by the acquiring unit.
其中，该指示参数通过用户面切换请求消息携带，可以为直接指示参数或切换类型参数。Wherein, the indication parameter is carried by the user plane handover request message, and may be a direct indication parameter or a handover type parameter.
其中，该用户面切换请求消息可以为代理绑定更新消息或建立承载请求消息。Wherein, the user plane handover request message may be a proxy binding update message or a bearer establishment request message.
本发明还提供另一网络锚点实施例。该网络锚点包括：The present invention also provides another network anchor embodiment. The network anchors include:
存储单元，用于存储接入类型的变化与终端切换后承载释放方式的对应关系；The storage unit is used to store the corresponding relationship between the change of the access type and the bearer release mode after the terminal is switched;
获取单元，用于获取源网络的接入类型和目标网络的接入类型；an acquiring unit, configured to acquire the access type of the source network and the access type of the target network;
判断单元，用于根据获取单元获取的源网络的接入类型和目标网络的接入类型，以及存储单元存储的接入类型的变化与终端切换到目标网络后承载释放方式的对应关系，判断网络锚点是否在终端切换到目标网络后发起源网络的承载释放。The judging unit is configured to judge the network according to the access type of the source network and the access type of the target network acquired by the acquisition unit, and the correspondence between the change of the access type stored in the storage unit and the bearer release mode after the terminal switches to the target network. Whether the anchor initiates the bearer release of the source network after the terminal switches to the target network.
其中，该存储单元存储的接入类型的变化与终端切换后承载释放方式的对应关系可以通过静态配置或动态获取。Wherein, the correspondence between the change of the access type stored in the storage unit and the bearer release mode after the terminal is switched can be statically configured or dynamically acquired.
本实施例中，该接入类型可以包括：接入技术类型和/或IP-CAN类型。In this embodiment, the access type may include: access technology type and/or IP-CAN type.
以上仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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| KR20110020161A (en)* | 2009-08-21 | 2011-03-02 | 엘지전자 주식회사 | A server in charge of a control plane in a mobile communication network and a method for controlling a session based on SPIPO |
| CN102006673B (en)* | 2009-08-28 | 2014-01-01 | 华为技术有限公司 | Method, device and system for releasing connection |
| CN102833879B (en)* | 2009-08-28 | 2015-02-25 | 华为技术有限公司 | Method, device and system for connection release |
| CN102170628B (en)* | 2010-02-25 | 2016-08-03 | 中兴通讯股份有限公司 | Realize the Wimax system without fixed anchor point switching and changing method thereof |
| CN104756541B (en)* | 2013-05-15 | 2019-02-05 | 华为技术有限公司 | A method and device for offloading a wireless network |
| CN108541031B (en)* | 2017-03-03 | 2020-07-21 | 华为技术有限公司 | Service switching method, device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064938A (en)* | 2006-04-28 | 2007-10-31 | 华为技术有限公司 | Method for applying MIP when the mobile terminal switched between 3GPP and non-3GPP access system |
| CN101087475A (en)* | 2006-08-21 | 2007-12-12 | 中兴通讯股份有限公司 | Switching method between evolved wireless system and traditional wireless system |
- 2008
- 2008-01-08CNCN2008100651558Apatent/CN101483899B/ennot_activeExpired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064938A (en)* | 2006-04-28 | 2007-10-31 | 华为技术有限公司 | Method for applying MIP when the mobile terminal switched between 3GPP and non-3GPP access system |
| CN101087475A (en)* | 2006-08-21 | 2007-12-12 | 中兴通讯股份有限公司 | Switching method between evolved wireless system and traditional wireless system |
Non-Patent Citations (1)
| Title |
|---|
| 3rd Generation Partnership Project.3GPP TS 23.402 V8.0.0.Architecture enhancements for non-3GPP accesses.2007,全文.* |
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| CN101483899A (en) | 2009-07-15 |
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