技术领域technical field
本发明属于移动通信技术领域，尤其涉及一种建立隧道的方法、用户设备及NNI接口网关。The invention belongs to the technical field of mobile communication, and in particular relates to a method for establishing a tunnel, user equipment and an NNI interface gateway.
背景技术Background technique
长期演进(Long Term Evolution，LTE)项目是3G的演进，始于2004年3GPP的多伦多会议。LTE是3G与4G技术之间的一个过渡，是3.9G的全球标准，它改进并增强了3G的空中接入技术，采用正交频分复用技术（OrthogonalFrequency Division Multiplexing，OFDM）和多输入输出天线系统（Multiple-Input Multiple-Out-put，MIMO）作为其无线网络演进的唯一标准。在20MHz频谱带宽下能够提供下行326Mbit/s与上行86Mbit/s的峰值速率，改善了小区边缘用户的性能，可以提高小区容量和降低系统延迟。The Long Term Evolution (LTE) project is the evolution of 3G, which started at the Toronto Conference of 3GPP in 2004. LTE is a transition between 3G and 4G technology, and is the global standard of 3.9G. It improves and enhances the air access technology of 3G, adopts Orthogonal Frequency Division Multiplexing (OFDM) and multiple input and output The antenna system (Multiple-Input Multiple-Out-put, MIMO) is the only standard for its wireless network evolution. Under the 20MHz spectrum bandwidth, it can provide the peak rate of downlink 326Mbit/s and uplink 86Mbit/s, which improves the performance of cell edge users, can increase cell capacity and reduce system delay.
与3G相比，LTE更具技术优势，具体体现在：高数据速率、分组传送、延迟降低、广域覆盖和向下兼容。Compared with 3G, LTE has more technical advantages, which are embodied in: high data rate, packet transmission, reduced delay, wide area coverage and backward compatibility.
近年来，国家宽带网络在全球如雨后春笋般破土而出，为电信业的发展和全球信息化带来新的气息，国家宽带网络应该具备开放的网络架构。In recent years, national broadband networks have sprung up all over the world, bringing new breath to the development of the telecommunications industry and global informatization. National broadband networks should have an open network architecture.
考虑到各种复杂的网络场景和业务需求，国家宽带网络应充分具备融合的特性，并保证提供不同的服务质量（Quality of Service，QoS）和服务水平协议（Service-Level Agreement，SLA）。国家宽带网络需要考虑兼容性网络之间互连的协议（Internet Protocol，IP）、时分复用（Time Division Multiplex，TDM）、异步传输模式（Asynchronous Transfer Mode，ATM）等不同的网络类型，业务的多样性（语音、视频和数据等）和统一的接入（固定、移动）等。国家宽带网络应致力于帮助建立一个融合的网络，让用户可以随时随地享受到宽带生活。Considering various complex network scenarios and business requirements, the national broadband network should fully have the characteristics of integration, and guarantee to provide different quality of service (Quality of Service, QoS) and service level agreement (Service-Level Agreement, SLA). The National Broadband Network needs to consider different network types such as Internet Protocol (IP), Time Division Multiplex (TDM), and Asynchronous Transfer Mode (ATM) among compatible networks. Diversity (voice, video and data, etc.) and unified access (fixed, mobile), etc. The National Broadband Network should be committed to helping build a converged network so that users can enjoy broadband anytime, anywhere.
随着业务和网络的发展，传统的业务运营商逐渐分离为网络管道提供商（Channel Provider，CP）和业务提供商（Service Provider，SP），而作为网络管道提供商，要对所有的SP提供公平的业务接入，允许用户自由地选择SP。With the development of business and network, traditional business operators are gradually separated into network channel provider (Channel Provider, CP) and service provider (Service Provider, SP). As a network channel provider, it is necessary to provide all SPs with Fair service access allows users to choose SP freely.
随着国家宽带向农村地带覆盖，使用光纤网络成本较高，而使用LTE无线网络，成为很有竞争力的选择。With the national broadband covering rural areas, the cost of using optical fiber networks is relatively high, while using LTE wireless networks has become a very competitive choice.
在国家宽带网络中，提出了新的要求，为了保证公平的接入，必须在网络管道提供商的用户与网络接口（User Network Interface，UNI）和网络与网络接口（Network-Network Interface，NNI）接口提供二层的以太网Ethernet特性，提供虚拟局域网（Virtual Local Area Network，VLAN）特性，所有的用户都采用VLAN来识别和接入到SP网络。In the National Broadband Network, new requirements are put forward. In order to ensure fair access, the user and network interface (User Network Interface, UNI) and network-network interface (Network-Network Interface, NNI) of the network pipe provider must be connected. The interface provides Layer 2 Ethernet features and Virtual Local Area Network (VLAN) features. All users use VLANs to identify and access the SP network.
用户可以直接与SP签订业务协议，由SP提供业务，租赁网络管道提供商的网络UNI/NNI接口。用户可以随时更换SP，并且不需要与网络管道提供商协商。The user can directly sign a service agreement with the SP, and the SP will provide the service and lease the network UNI/NNI interface of the network pipe provider. Users can replace the SP at any time without negotiating with the network pipe provider.
当网络管道提供商使用LTE网络作为给用户和SP的接入网络时，必须要在LTE的网络用户侧和网络侧分别配置二层Ethernet特性的处理模块，在网络中，可能形成的形态为UE集成数据链路层L2功能，对用户体现UNI接口，而在网络侧提供单独的NNI接口网关（Network-Network Interface Gateway，NNI-GW）来提供二层接口，或者在分组数据网络网关（Packet Data NetworkGateway，PDN-GW）中集成二层接口功能，对网络侧体现NNI接口。When the network pipe provider uses the LTE network as the access network for users and SPs, it is necessary to configure Layer 2 Ethernet feature processing modules on the user side and network side of the LTE network. In the network, the possible form is UE Integrate the data link layer L2 function, reflect the UNI interface to the user, and provide a separate NNI interface gateway (Network-Network Interface Gateway, NNI-GW) on the network side to provide a layer 2 interface, or in the packet data network gateway (Packet Data Network Gateway) NetworkGateway, PDN-GW) integrates the Layer 2 interface function, and embodies the NNI interface on the network side.
组网如图1所示，其中，End user E为末端用户设备（End userEquipment），UE为用户设备（User Equipment），eNode B为演进型节点B（E-UTRAN Node B），S-GW为服务网关（Serving Gateway），PDN-GW为分组数据网络网关（Packet Data Network Gateway），NNI-GW为NNI接口网关（Network-Network Interface Gateway），MME为移动管理实体（MobilityManagement Entity），HSS为家庭用户管理服务器（Home Subscriber Server），ISP为互联网服务提供商（Internet Service Provider）。其中，隧道建立在UE和NNI-GW之间，每个UE可以建立多个到NNI-GW的隧道。The networking is shown in Figure 1, where End user E is End user Equipment, UE is User Equipment, eNode B is Evolved Node B (E-UTRAN Node B), and S-GW is Serving Gateway, PDN-GW is Packet Data Network Gateway, NNI-GW is NNI Interface Gateway (Network-Network Interface Gateway), MME is Mobility Management Entity, HSS is Home User Management Server (Home Subscriber Server), ISP is Internet Service Provider (Internet Service Provider). Wherein, the tunnel is established between the UE and the NNI-GW, and each UE can establish multiple tunnels to the NNI-GW.
现有技术采用任播Anycast方案，将隧道的多个端点（NNI-GW）配置相同的IP地址与UE建立隧道，由前一个路由设备（PDN-GW）配置优先路由。这样，隧道报文会优先在默认优先路由上转发，当一个NNI-GW出现故障的时候，前一个路由设备（PDN-GW）会按照路由表搜索下一条路由，重新将隧道报文发送到新的NNI-GW，由于对NNI-GW配置的IP是不变的，所以UE无法感知到隧道的变更。The existing technology adopts the Anycast Anycast solution, and multiple endpoints (NNI-GW) of the tunnel are configured with the same IP address to establish a tunnel with the UE, and the previous routing device (PDN-GW) configures a preferential route. In this way, tunnel packets will be forwarded on the default priority route first. When an NNI-GW fails, the previous routing device (PDN-GW) will search for the next route according to the routing table and resend the tunnel packets to the new NNI-GW. Since the IP configured for the NNI-GW is unchanged, the UE cannot perceive the change of the tunnel.
另外，为了解决单点故障的隐患，全部隧道需要至少1+1的IP配置，而且必须对每个隧道都要配置路由优先查找表，比较适合隧道数目少的场景，对隧道数目多的场景不太适用。In addition, in order to solve the hidden danger of a single point of failure, all tunnels need at least 1+1 IP configuration, and each tunnel must be configured with a routing priority lookup table, which is more suitable for scenarios with a small number of tunnels, but not for scenarios with a large number of tunnels. too applicable.
发明内容Contents of the invention
本发明实施例提供了一种建立隧道的方法、用户设备及NNI接口网关，旨在解决现有技术对隧道数目多的场景不太适用的问题。Embodiments of the present invention provide a method for establishing a tunnel, user equipment and an NNI interface gateway, aiming at solving the problem that the prior art is not applicable to scenarios with a large number of tunnels.
一方面，提供了一种建立隧道的方法，所述方法包括：In one aspect, a method for establishing a tunnel is provided, the method comprising:
用户设备UE从内部预置的集群地址池内选择一个隧道主控节点IP地址；The user equipment UE selects a tunnel master control node IP address from the internal preset cluster address pool;
发送建立隧道请求报文至与所述隧道主控节点IP地址对应的隧道主控节点，以由所述隧道主控节点为所述UE分配网络隧道端点并返回所述网络隧道端点的IP地址至所述UE；Sending a tunnel establishment request message to the tunnel master control node corresponding to the IP address of the tunnel master control node, so that the tunnel master control node allocates a network tunnel endpoint for the UE and returns the IP address of the network tunnel endpoint to the UE;
接收所述隧道主控节点发送的所述网络隧道端点的IP地址；receiving the IP address of the network tunnel endpoint sent by the tunnel master control node;
根据所述网络隧道端点的IP地址与所述网络隧道端点建立隧道。Establishing a tunnel with the network tunnel endpoint according to the IP address of the network tunnel endpoint.
另一方面，提供了一种用户设备，所述用户设备包括：In another aspect, a user equipment is provided, and the user equipment includes:
主控节点确定单元，用于从内部预置的集群地址池内选择一个隧道主控节点IP地址；The master control node determination unit is used to select a tunnel master control node IP address from the internal preset cluster address pool;
隧道请求发送单元，用于发送建立隧道请求报文至与所述隧道主控节点IP地址对应的隧道主控节点，以由所述隧道主控节点为所述UE分配网络隧道端点并返回所述网络隧道端点的IP地址至所述UE；A tunnel request sending unit, configured to send a tunnel establishment request message to the tunnel master control node corresponding to the IP address of the tunnel master control node, so that the tunnel master control node allocates a network tunnel endpoint for the UE and returns the the IP address of the network tunnel endpoint to the UE;
地址接收单元，用于接收所述隧道主控节点发送的所述网络隧道端点的IP地址；an address receiving unit, configured to receive the IP address of the network tunnel endpoint sent by the tunnel master control node;
第一隧道建立单元，用于根据所述网络隧道端点的IP地址与所述网络隧道端点建立隧道。A first tunnel establishing unit, configured to establish a tunnel with the network tunnel endpoint according to the IP address of the network tunnel endpoint.
再一方面，提供了一种建立隧道的方法，所述方法包括：In yet another aspect, a method for establishing a tunnel is provided, the method comprising:
接收用户设备UE发送的建立隧道请求报文；receiving a tunnel establishment request message sent by the user equipment UE;
为所述UE分配网络隧道端点；Allocating a network tunnel endpoint for the UE;
发送所述网络隧道端点的IP地址至所述UE，以由所述UE与所述IP地址对应的网络隧道端点建立隧道。sending the IP address of the network tunnel endpoint to the UE, so that the UE establishes a tunnel with the network tunnel endpoint corresponding to the IP address.
又一方面，提供了一种隧道主控节点，所述隧道主控节点包括：In yet another aspect, a tunnel master control node is provided, and the tunnel master control node includes:
隧道请求接收单元，用于接收用户设备UE发送的建立隧道请求报文；A tunnel request receiving unit, configured to receive a tunnel establishment request message sent by the user equipment UE;
第一隧道端点分配单元，用于为所述UE分配网络隧道端点；a first tunnel endpoint allocation unit, configured to allocate a network tunnel endpoint for the UE;
地址发送单元，用于发送所述网络隧道端点的IP地址至所述UE，以由所述UE与所述IP地址对应的网络隧道端点建立隧道。An address sending unit, configured to send the IP address of the network tunnel endpoint to the UE, so that the UE can establish a tunnel with the network tunnel endpoint corresponding to the IP address.
再一方面，提供了一种NNI接口网关，所述NNI接口网关包括如上所述的隧道主控节点和网络隧道端点，所述网络隧道端点是所述NNI接口网关的一个虚拟的接口。In yet another aspect, an NNI interface gateway is provided, and the NNI interface gateway includes the above-mentioned tunnel master node and a network tunnel endpoint, and the network tunnel endpoint is a virtual interface of the NNI interface gateway.
在本发明实施例中，UE不需要事先知道网络隧道端点IP地址，只需要知道隧道主控节点TMN的IP地址，即可在集群的隧道主控节点TMN上获取到相应的网络隧道端点IP地址，适用范围与隧道的数目没有关系，并可在所有的网络隧道端点上进行负载均衡，当隧道主控节点TMN和网络隧道端点NTE内置于NNI接口网关中时，即是实现了所有的NNI接口网关都可以为UE服务，使得在所有的NNI接口网关上进行负载均衡，保证了UE工作在负载均衡模式，另外，网络侧的NNI-GW数量不受限制，随着网络容量的增长，可以实现每增加一台，容量就平滑扩容一些，具备对于网络隧道集群的平滑扩容功能。In the embodiment of the present invention, the UE does not need to know the IP address of the network tunnel endpoint in advance, but only needs to know the IP address of the tunnel master node TMN, and can obtain the corresponding network tunnel endpoint IP address on the tunnel master node TMN of the cluster , the scope of application has nothing to do with the number of tunnels, and load balancing can be performed on all network tunnel endpoints. When the tunnel master control node TMN and the network tunnel endpoint NTE are built in the NNI interface gateway, all NNI interfaces are realized All gateways can serve UEs, so that load balancing is performed on all NNI interface gateways, ensuring that UEs work in load balancing mode. In addition, the number of NNI-GWs on the network side is not limited. With the increase of network capacity, it can realize Every time one is added, the capacity will be expanded smoothly, and it has the function of smooth expansion for network tunnel clusters.
附图说明Description of drawings
图1是国家宽带网络的组网结构示意图；Figure 1 is a schematic diagram of the network structure of the National Broadband Network;
图2是本发明实施例一提供的建立隧道的方法的实现流程图；FIG. 2 is an implementation flowchart of a method for establishing a tunnel provided by Embodiment 1 of the present invention;
图3是本发明实施例二提供的建立隧道的方法的实现流程图；FIG. 3 is an implementation flowchart of a method for establishing a tunnel provided by Embodiment 2 of the present invention;
图4是本发明实施例三提供的建立隧道的方法的实现流程图；FIG. 4 is an implementation flowchart of a method for establishing a tunnel provided by Embodiment 3 of the present invention;
图5是本发明实施例四提供的建立隧道的方法的实现流程图；FIG. 5 is an implementation flowchart of a method for establishing a tunnel provided by Embodiment 4 of the present invention;
图6是本发明实施例五提供的用户设备的结构框图；FIG. 6 is a structural block diagram of a user equipment provided in Embodiment 5 of the present invention;
图7是本发明实施例六提供的隧道主控节点的结构框图。FIG. 7 is a structural block diagram of a tunnel master control node provided by Embodiment 6 of the present invention.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
在本发明实施例中，在UE请求建立隧道请求的时候，首先选择一个隧道主控节点TMN，然后向该隧道主控节点发出隧道请求报文，由该隧道主控节点为所述UE分配网络隧道端点并返回所述网络隧道端点的IP地址至所述UE，当UE接收到隧道主控节点返回的NTE的IP地址后，后续报文将依照UE的IP和NTE的IP来作为隧道端点。In the embodiment of the present invention, when the UE requests to establish a tunnel request, it first selects a tunnel master control node TMN, and then sends a tunnel request message to the tunnel master control node, and the tunnel master control node allocates a network for the UE. The tunnel endpoint returns the IP address of the network tunnel endpoint to the UE. When the UE receives the IP address of the NTE returned by the tunnel master control node, subsequent messages will be used as the tunnel endpoint according to the IP of the UE and the IP of the NTE.
以下结合具体实施例对本发明的实现进行详细描述：The realization of the present invention is described in detail below in conjunction with specific embodiment:
实施例一Embodiment one
图2示出了本发明实施例一提供的建立隧道的方法的实现流程，以用户设备侧为例来进行说明，详述如下：FIG. 2 shows the implementation process of the method for establishing a tunnel provided by Embodiment 1 of the present invention. The user equipment side is taken as an example for illustration, and the details are as follows:
在步骤S201中，用户设备UE从内部预置的集群地址池内选择一个隧道主控节点IP地址。In step S201, the user equipment UE selects an IP address of a tunnel master control node from an internal preset cluster address pool.
由于UE发出建立隧道请求报文的时候，并不知道NNI接口网关的哪个端口是空闲的，并且一个端口可以包含多个网络隧道端点，所以，如果UE很多，NNI接口网关就无法准确的选择网络隧道端点（Network Tunnel Endpoint，NTE）。Since the UE does not know which port of the NNI interface gateway is idle when sending a tunnel establishment request message, and a port can contain multiple network tunnel endpoints, so if there are many UEs, the NNI interface gateway cannot accurately select the network Tunnel endpoint (Network Tunnel Endpoint, NTE).
本实施例由隧道主控节点TMN负责根据业务流量以及配置原则，进行网络隧道端点NTE的选择，其中隧道主控节点TMN位于NNI接口网关上，可以与NNI接口网关集成在一起，也可以是与NNI接口网关分立的网络单元。In this embodiment, the tunnel master control node TMN is responsible for selecting the network tunnel endpoint NTE according to the service flow and configuration principles, wherein the tunnel master control node TMN is located on the NNI interface gateway, and can be integrated with the NNI interface gateway, or can be integrated with the NNI interface gateway. NNI interface gateway discrete network element.
在本实施例中，预先在UE的内部配置集群地址池，该集群地址池内存储有多个隧道主控节点IP地址，并将其中一个隧道主控节点IP地址作为默认的隧道主控节点IP地址，当UE需要建立隧道时，可以先从集群地址池查找到该默认的隧道主控节点IP地址，然后向该隧道主控节点IP地址对应的隧道主控节点发送隧道请求报文。In this embodiment, a cluster address pool is pre-configured inside the UE, and multiple tunnel master node IP addresses are stored in the cluster address pool, and one of the tunnel master node IP addresses is used as the default tunnel master node IP address , when the UE needs to establish a tunnel, it can first find the default tunnel master control node IP address from the cluster address pool, and then send a tunnel request message to the tunnel master control node corresponding to the tunnel master control node IP address.
在步骤S202中，发送建立隧道请求报文至与所述隧道主控节点IP地址对应的隧道主控节点，以由所述隧道主控节点为所述UE分配网络隧道端点并返回所述网络隧道端点的IP地址至所述UE。In step S202, send a tunnel establishment request message to the tunnel master control node corresponding to the IP address of the tunnel master control node, so that the tunnel master control node allocates a network tunnel endpoint for the UE and returns the network tunnel IP address of the endpoint to the UE.
在本实施例中，UE查找到默认的隧道主控节点IP地址，发送隧道请求报文至与该隧道主控节点IP地址对应的隧道主控节点，该隧道主控节点接收到UE发送的建立隧道请求报文后，向内部配置的网元列表中的多个网络隧道端点NTE中的一个网络隧道端点NTE发送查询请求，接收到查询请求的网络隧道端点NTE将当前可以分配的隧道信息反馈给该隧道主控节点，如果隧道建立不成功，则由所述网络隧道端点NTE反馈隧道建立失败的信息至该隧道主控节点，该隧道主控节点将重新向网元列表中的其它网络隧道端点NTE以及相应的端口发送查询请求，直至确定UE与所述网络隧道端点NTE之间的隧道建立成功为止，这样，当一个网络隧道端点NTE出现故障时，所有相关的UE重新会选择新的NTE，建立起隧道，不影响整个网络的运营。In this embodiment, the UE finds the default IP address of the tunnel master control node, sends a tunnel request message to the tunnel master control node corresponding to the IP address of the tunnel master control node, and the tunnel master control node receives the establishment After the tunnel request message, send a query request to one of the multiple network tunnel endpoints NTE in the internally configured network element list, and the network tunnel endpoint NTE that receives the query request feeds back the currently available tunnel information to the The tunnel master control node, if the tunnel establishment is unsuccessful, the tunnel establishment failure information will be fed back by the network tunnel endpoint NTE to the tunnel master control node, and the tunnel master control node will redirect to other network tunnel endpoints in the network element list The NTE and the corresponding port send query requests until it is determined that the tunnel between the UE and the network tunnel endpoint NTE is successfully established, so that when a network tunnel endpoint NTE fails, all relevant UEs will select a new NTE again, The tunnel is established without affecting the operation of the entire network.
具体的，隧道主控节点内部配置的网元列表中保存有所有的网络隧道端点NTE的工作状态信息，所述工作状态信息包括端口数量、端口号、流量信息、是否故障、优先等级等等。主控节点需要了解的所有NTE的工作状态，以便主控节点进行NTE以及相应端口的选择。同时，为了避免所有的UE同时发起建立隧道请求，隧道主控节点TMN会执行流量限制算法，限制能够接入的请求的数量。Specifically, the network element list configured inside the tunnel master control node stores the working status information of all network tunnel endpoints NTE, and the working status information includes port quantity, port number, flow information, failure or not, priority and so on. The master control node needs to know the working status of all NTEs, so that the master control node can select the NTE and the corresponding port. At the same time, in order to prevent all UEs from simultaneously initiating tunnel establishment requests, the tunnel master node TMN will execute a flow limiting algorithm to limit the number of requests that can be accessed.
具体的，隧道主控节点根据NTE的流量信息以及预设的配置原则来进行网络隧道端点NTE的选择。其中，主要根据流量信息来进行网络隧道端点NTE的选择，原因在于：NTE(也就是NNI-GW)之间进行负载均衡后，可以避免某些NTE流量过大，具体实施时是否依据流量信息来进行网络隧道端点NTE的选择，是产品的一种使用方法，不是严格要求的，也可以只根据NTE列表顺序（优先等级）进行NTE选取。预设的配置原则主要是指如何在NTE上进行选择，比如，配置所有的端口地位相等，都可以使用，或者配置某些端口只能给某些IP使用，或者某个NTE只能当作备用，这只是一种人为的使用配置。Specifically, the tunnel master control node selects the network tunnel endpoint NTE according to the traffic information of the NTE and a preset configuration principle. Among them, the selection of network tunnel endpoint NTE is mainly based on traffic information. The reason is that after load balancing between NTEs (that is, NNI-GW), some NTE traffic can be avoided. The selection of the network tunnel endpoint NTE is a method of using the product, and it is not strictly required. You can also select the NTE only according to the order (priority) of the NTE list. The default configuration principle mainly refers to how to choose on the NTE, for example, configure all ports to be equal and can be used, or configure some ports to be used only by certain IPs, or a certain NTE can only be used as a backup , which is just an artificial usage configuration.
在步骤S203中，接收所述隧道主控节点发送的所述网络隧道端点的IP地址。In step S203, the IP address of the network tunnel endpoint sent by the tunnel master control node is received.
在步骤S204中，根据所述网络隧道端点的IP地址与所述网络隧道端点建立隧道。In step S204, a tunnel is established with the network tunnel endpoint according to the IP address of the network tunnel endpoint.
在本实施例中，UE接收到隧道主控节点发送的所述网络隧道端点的IP地址后，即可根据所述网络隧道端点的IP地址与所述网络隧道端点建立隧道。In this embodiment, after receiving the IP address of the network tunnel endpoint sent by the tunnel master control node, the UE can establish a tunnel with the network tunnel endpoint according to the IP address of the network tunnel endpoint.
本实施例，UE不需要事先知道网络隧道端点IP地址，只需要知道隧道主控节点TMN的IP地址，即可在集群的隧道主控节点TMN上获取到相应的网络隧道端点IP地址，适用范围与隧道的数目没有关系，并可在所有的网络隧道端点上进行负载均衡，当隧道主控节点TMN和网络隧道端点NTE内置于NNI接口网关中时，即是实现了所有的NNI接口网关都可以为UE服务，使得在所有的NNI接口网关上进行负载均衡，保证了UE工作在负载均衡模式。In this embodiment, the UE does not need to know the IP address of the network tunnel endpoint in advance, but only needs to know the IP address of the tunnel master node TMN, and can obtain the corresponding network tunnel endpoint IP address on the tunnel master node TMN of the cluster, applicable scope It has nothing to do with the number of tunnels, and can perform load balancing on all network tunnel endpoints. When the tunnel master control node TMN and the network tunnel endpoint NTE are built in the NNI interface gateway, it means that all NNI interface gateways can Serving the UE enables load balancing to be performed on all NNI interface gateways, ensuring that the UE works in load balancing mode.
实施例二Embodiment two
图3示出了本发明实施例二提供的建立隧道的方法的实现流程，以用户设备侧为例来进行说明，详述如下：FIG. 3 shows the implementation process of the method for establishing a tunnel provided by Embodiment 2 of the present invention. The user equipment side is taken as an example for illustration, and the details are as follows:
在步骤S301中，用户设备UE从内部预置的集群地址池内选择一个隧道主控节点IP地址。In step S301, the user equipment UE selects an IP address of a tunnel master control node from an internal preset cluster address pool.
在步骤S302中，发送建立隧道请求报文至与所述隧道主控节点IP地址对应的隧道主控节点，以由所述隧道主控节点为所述UE分配网络隧道端点并返回所述网络隧道端点的IP地址至所述UE。In step S302, send a tunnel establishment request message to the tunnel master control node corresponding to the IP address of the tunnel master control node, so that the tunnel master control node allocates a network tunnel endpoint for the UE and returns the network tunnel IP address of the endpoint to the UE.
在步骤S303中，如果在预设的时间内没有接收到所述隧道主控节点发送的所述网络隧道端点的IP地址，则执行步骤S304，否则执行步骤S305。In step S303, if the IP address of the network tunnel endpoint sent by the tunnel master control node is not received within the preset time, then step S304 is executed; otherwise, step S305 is executed.
在本实施例中，UE检测是否在预设的时间内接收到所述隧道主控节点发送的所述网络隧道端点的IP地址，如果没有接收到，则执行步骤S304，否则执行步骤S305。其中，没有接收到所述隧道主控节点发送的所述网络隧道端点的IP地址，表示隧道建立失败，需要重新建立。In this embodiment, the UE detects whether the IP address of the network tunnel endpoint sent by the tunnel master control node is received within a preset time, and if not, executes step S304, otherwise executes step S305. Wherein, if the IP address of the network tunnel endpoint sent by the tunnel master control node is not received, it means that the tunnel establishment fails and needs to be re-established.
在步骤S304中，在内部预置的集群地址池内随机选择或者按照预先配置好的原则选取一个新的隧道主控节点IP地址，并向与所述新的隧道主控节点IP地址对应的隧道主控节点发送建立隧道请求报文，直至在预设的时间内接收到所述新的隧道主控节点发送的响应消息，所述响应消息中包括所述新的隧道主控节点为所述UE分配的网络隧道端点的IP地址。In step S304, a new IP address of the tunnel master control node is randomly selected from the internal preset cluster address pool or according to the pre-configured principle, and the tunnel master corresponding to the new tunnel master control node IP address The control node sends a tunnel establishment request message until it receives a response message sent by the new tunnel master control node within a preset time, and the response message includes the channel allocated by the new tunnel master control node for the UE. The IP address of the network tunnel endpoint.
在本实施例中，当隧道建立失败时，UE从集群地址池内随机选择或者按照预先配置好的原则选取一个新的隧道主控节点IP地址，并向与所述新的隧道主控节点IP地址对应的隧道主控节点发送建立隧道请求报文，直至在预设的时间内接收到所述新的隧道主控节点发送的响应消息，所述响应消息中包括所述新的隧道主控节点为所述UE分配的网络隧道端点的IP地址。In this embodiment, when the tunnel establishment fails, the UE randomly selects a new tunnel master control node IP address from the cluster address pool or selects a new tunnel master control node IP address according to a pre-configured principle, and sends The corresponding tunnel master control node sends a tunnel establishment request message until a response message sent by the new tunnel master control node is received within a preset time, and the response message includes that the new tunnel master control node is The IP address of the network tunnel endpoint allocated by the UE.
在本实施例中，隧道主控节点可以内置于NNI接口网关中，在NNI接口网关出现故障时，可以重新选择新的NNI接口网关，当一个NNI接口网关出现故障时，不影响整个网络的运营，所有相关的UE重新会选择新的NNI接口网关，建立起隧道。In this embodiment, the tunnel master control node can be built into the NNI interface gateway. When the NNI interface gateway fails, a new NNI interface gateway can be selected again. When an NNI interface gateway fails, the operation of the entire network will not be affected. , all relevant UEs will select a new NNI interface gateway again and establish a tunnel.
在步骤S305中，根据所述网络隧道端点的IP地址与所述网络隧道端点建立隧道。In step S305, a tunnel is established with the network tunnel endpoint according to the IP address of the network tunnel endpoint.
本实施例，当隧道主控节点出现故障时，不影响整个网络的运营，所有相关的UE重新会选择新的NNI接口网关，建立起隧道。In this embodiment, when the tunnel master control node fails, the operation of the entire network will not be affected, and all relevant UEs will reselect a new NNI interface gateway to establish a tunnel.
实施例三Embodiment three
图4示出了本发明实施例三提供的建立隧道的方法的实现流程，以隧道主控节点侧为例来进行说明，详述如下：FIG. 4 shows the implementation process of the method for establishing a tunnel provided by Embodiment 3 of the present invention. The tunnel master control node side is used as an example for illustration, and the details are as follows:
在步骤S401中，接收用户设备UE发送的建立隧道请求报文。In step S401, a tunnel establishment request message sent by a user equipment UE is received.
在步骤S402中，为所述UE分配网络隧道端点。In step S402, a network tunnel endpoint is allocated to the UE.
在本实施例中，隧道主控节点根据本地存储的所有网络隧道端点的业务流量以及预置的配置原则为所述UE分配网络隧道端点。In this embodiment, the tunnel master control node allocates network tunnel endpoints to the UE according to locally stored service flows of all network tunnel endpoints and preset configuration principles.
具体的，隧道主控节点内部配置的网元列表中保存有所有的网络隧道端点NTE的工作状态信息，所述工作状态信息包括端口数量、端口号、流量信息、是否故障、优先等级等等。主控节点需要了解的所有NTE的工作状态，以便主控节点进行NTE以及相应端口的选择。同时，为了避免所有的UE同时发起建立隧道请求，隧道主控节点TMN会执行流量限制算法，限制能够接入的请求的数量。Specifically, the network element list configured inside the tunnel master control node stores the working status information of all network tunnel endpoints NTE, and the working status information includes port quantity, port number, flow information, failure or not, priority and so on. The master control node needs to know the working status of all NTEs, so that the master control node can select the NTE and the corresponding port. At the same time, in order to prevent all UEs from simultaneously initiating tunnel establishment requests, the tunnel master node TMN will execute a flow limiting algorithm to limit the number of requests that can be accessed.
具体的，隧道主控节点根据NTE的流量信息以及预设的配置原则来进行网络隧道端点NTE的选择。其中，主要根据流量信息来进行网络隧道端点NTE的选择，原因在于：NTE(也就是NNI-GW)之间要进行负载均衡，可以避免某些NTE流量过大，是否依据流量信息，是产品的一种使用方法，不是严格要求的，也可以只根据NTE列表顺序（优先等级）选取。Specifically, the tunnel master control node selects the network tunnel endpoint NTE according to the traffic information of the NTE and a preset configuration principle. Among them, the selection of network tunnel endpoint NTE is mainly based on traffic information. The reason is that load balancing between NTEs (that is, NNI-GW) can avoid excessive traffic of some NTEs. Whether it is based on traffic information is a product decision. A method of use is not strictly required, and can also be selected only according to the order (priority) of the NTE list.
预设的配置原则主要是指如何在NTE上进行选择，比如，配置所有的端口地位相等，都可以使用，或者某些端口只能给某些IP使用，或者某个NTE只能当作备用，这只是一种人为的使用配置。The default configuration principle mainly refers to how to choose on the NTE, for example, configure all ports to be equal and can be used, or some ports can only be used by certain IPs, or a certain NTE can only be used as a backup. This is just an artificial usage configuration.
在步骤S403中，发送所述网络隧道端点的IP地址至所述UE，以由所述UE与所述IP地址对应的网络隧道端点建立隧道。In step S403, the IP address of the network tunnel endpoint is sent to the UE, so that the UE establishes a tunnel with the network tunnel endpoint corresponding to the IP address.
本实施例，通过隧道主控节点为UE分配网络隧道端点，实现了网络隧道端点分配的集中控制。In this embodiment, the network tunnel endpoint is allocated to the UE by the tunnel master control node, thereby realizing the centralized control of network tunnel endpoint allocation.
实施例四Embodiment four
图5示出了本发明实施例四提供的建立隧道的方法的实现流程，以隧道主控节点侧为例来进行说明，详述如下：FIG. 5 shows the implementation process of the method for establishing a tunnel provided by Embodiment 4 of the present invention, and the tunnel master control node side is used as an example for illustration, and the details are as follows:
在步骤S501中，接收用户设备UE发送的建立隧道请求报文。In step S501, a tunnel establishment request message sent by a user equipment UE is received.
在步骤S502中，为所述UE分配网络隧道端点。In step S502, a network tunnel endpoint is allocated to the UE.
在步骤S503中，发送查询请求至所分配的网络隧道端点。In step S503, a query request is sent to the allocated network tunnel endpoint.
在步骤S504中，接收所述网络隧道端点反馈的当前工作状态信息，根据所述当前工作状态信息确定隧道能否建立成功，如果建立不成功，则为所述UE分配新的网络隧道端点，直至所述UE与所述新的网络隧道端点之间的隧道建立成功，如果成功，则执行步骤S505。In step S504, receiving the current working status information fed back by the network tunnel endpoint, determining whether the tunnel can be successfully established according to the current working status information, and if the establishment is unsuccessful, assigning a new network tunnel endpoint to the UE until The tunnel between the UE and the new network tunnel endpoint is successfully established, and if successful, step S505 is performed.
在步骤S505中，发送所述网络隧道端点的IP地址至所述UE，以由所述UE与所述IP地址对应的网络隧道端点建立隧道。In step S505, the IP address of the network tunnel endpoint is sent to the UE, so that the UE establishes a tunnel with the network tunnel endpoint corresponding to the IP address.
本实施例，通过隧道主控节点为UE分配网络隧道端点，当一个网络隧道端点故障时，隧道主控节点可以为UE重新选择新的网络隧道端点，不影响整个网络的运营。In this embodiment, the tunnel master control node allocates network tunnel endpoints to UEs. When a network tunnel endpoint fails, the tunnel master control node can reselect a new network tunnel endpoint for the UE without affecting the operation of the entire network.
实施例五Embodiment five
图6示出了本发明实施例五提供的用户设备的结构框图，为了便于说明，仅示出了与本发明实施例相关的部分。所述用户设备包括：主控节点确定单元61、隧道请求发送单元62、地址接收单元63和第一隧道建立单元64。FIG. 6 shows a structural block diagram of a user equipment provided by Embodiment 5 of the present invention. For ease of description, only parts related to the embodiment of the present invention are shown. The user equipment includes: a master control node determining unit 61 , a tunnel request sending unit 62 , an address receiving unit 63 and a first tunnel establishing unit 64 .
其中，主控节点确定单元61，用于从内部预置的集群地址池内选择一个隧道主控节点IP地址；Wherein, the master control node determination unit 61 is used to select a tunnel master control node IP address from the internal preset cluster address pool;
隧道请求发送单元62，用于发送建立隧道请求报文至与所述隧道主控节点IP地址对应的隧道主控节点，以由所述隧道主控节点为所述UE分配网络隧道端点并返回所述网络隧道端点的IP地址至所述UE；A tunnel request sending unit 62, configured to send a tunnel establishment request message to the tunnel master control node corresponding to the IP address of the tunnel master control node, so that the tunnel master control node allocates a network tunnel endpoint for the UE and returns the the IP address of the network tunnel endpoint to the UE;
地址接收单元63，用于接收所述隧道主控节点发送的所述网络隧道端点的IP地址；An address receiving unit 63, configured to receive the IP address of the network tunnel endpoint sent by the tunnel master control node;
第一隧道建立单元64，用于根据所述网络隧道端点的IP地址与所述网络隧道端点建立隧道。The first tunnel establishing unit 64 is configured to establish a tunnel with the network tunnel endpoint according to the IP address of the network tunnel endpoint.
作为本发明的一个优选实施例，所述用户设备还包括：第二隧道建立单元，该第二隧道建立单元用于如果在预设的时间内没有接收到所述隧道主控节点发送的所述网络隧道端点的IP地址，则在内部预置的集群地址池内随机选择或者按照预先配置好的原则选取一个新的隧道主控节点IP地址，并向与所述新的隧道主控节点IP地址对应的隧道主控节点发送建立隧道请求报文，直至在预设的时间内接收到所述新的隧道主控节点发送的响应消息，所述响应消息中包括所述新的隧道主控节点为所述UE分配的网络隧道端点的IP地址。As a preferred embodiment of the present invention, the user equipment further includes: a second tunnel establishment unit, configured to if the tunnel master node does not receive the tunnel master control node within a preset time The IP address of the network tunnel endpoint is randomly selected in the internal preset cluster address pool or a new tunnel master control node IP address is selected according to the pre-configured principle, and corresponds to the new tunnel master control node IP address. The tunnel master control node sends a tunnel establishment request message until the response message sent by the new tunnel master control node is received within the preset time, and the response message includes that the new tunnel master control node is the The IP address of the network tunnel endpoint assigned by the UE.
实施例六Embodiment six
图7示出了本发明实施例六提供的隧道主控节点的结构框图，为了便于说明，仅示出了与本发明实施例相关的部分。该隧道主控节点隧道主控节点位于NNI接口网关上，所述隧道主控节点包括：隧道请求接收单元71、第一隧道端点分配单元72和地址发送单元73。FIG. 7 shows a structural block diagram of a tunnel master control node provided by Embodiment 6 of the present invention. For ease of description, only parts related to the embodiment of the present invention are shown. The tunnel master control node The tunnel master control node is located on the NNI interface gateway, and the tunnel master control node includes: a tunnel request receiving unit 71 , a first tunnel endpoint assigning unit 72 and an address sending unit 73 .
隧道请求接收单元71，用于接收用户设备UE发送的建立隧道请求报文；A tunnel request receiving unit 71, configured to receive a tunnel establishment request message sent by the user equipment UE;
第一隧道端点分配单元72，用于为所述UE分配网络隧道端点，所述第一隧道端点分配单元72根据本地存储的所有网络隧道端点的业务流量以及预置的配置原则为所述UE分配网络隧道端点；The first tunnel endpoint allocation unit 72 is configured to allocate a network tunnel endpoint for the UE, and the first tunnel endpoint allocation unit 72 allocates a network tunnel endpoint for the UE according to the service flow of all network tunnel endpoints stored locally and preset configuration principles. network tunnel endpoint;
地址发送单元73，用于发送所述网络隧道端点的IP地址至所述UE，以由所述UE与所述IP地址对应的网络隧道端点建立隧道。The address sending unit 73 is configured to send the IP address of the network tunnel endpoint to the UE, so that the UE establishes a tunnel with the network tunnel endpoint corresponding to the IP address.
作为本发明的一个优选实施例，所述隧道主控节点还包括：查询请求发送单元、当前状态接收单元和第二隧道端点分配单元。As a preferred embodiment of the present invention, the tunnel master control node further includes: a query request sending unit, a current state receiving unit, and a second tunnel endpoint allocating unit.
其中，查询请求发送单元，用于发送查询请求至所分配的网络隧道端点；Wherein, the query request sending unit is used to send the query request to the assigned network tunnel endpoint;
当前状态接收单元，用于接收所述网络隧道端点反馈的当前工作状态信息；a current state receiving unit, configured to receive current working state information fed back by the network tunnel endpoint;
第二隧道端点分配单元，用于根据所述当前工作状态信息确定隧道能否建立成功，如果建立不成功，则为所述UE分配新的网络隧道端点，直至所述UE与所述新的网络隧道端点之间的隧道建立成功。The second tunnel endpoint allocation unit is configured to determine whether the tunnel can be successfully established according to the current working state information, and if the establishment is unsuccessful, allocate a new network tunnel endpoint for the UE until the UE is connected to the new network Tunnel establishment between tunnel endpoints was successful.
值得注意的是，上述系统实施例中，所包括的各个单元只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；另外，各功能单元的具体名称也只是为了便于相互区分，并不用于限制本发明的保护范围。It is worth noting that in the above system embodiments, the units included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit It is only for the convenience of distinguishing each other, and is not used to limit the protection scope of the present invention.
另外，本领域普通技术人员可以理解实现上述各实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，相应的程序可以存储于一计算机可读取存储介质中，所述的存储介质，如ROM/RAM、磁盘或光盘等。In addition, those of ordinary skill in the art can understand that all or part of the steps in the methods of the above-mentioned embodiments can be completed by instructing related hardware through programs, and the corresponding programs can be stored in a computer-readable storage medium. Storage media, such as ROM/RAM, magnetic disk or optical disk, etc.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204617.6ACN102710812B (en) | 2012-06-20 | 2012-06-20 | A kind of method, subscriber equipment and NNI interface gateway setting up tunnel |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204617.6ACN102710812B (en) | 2012-06-20 | 2012-06-20 | A kind of method, subscriber equipment and NNI interface gateway setting up tunnel |
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| CN102710812A CN102710812A (en) | 2012-10-03 |
| CN102710812Btrue CN102710812B (en) | 2015-08-26 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201210204617.6AActiveCN102710812B (en) | 2012-06-20 | 2012-06-20 | A kind of method, subscriber equipment and NNI interface gateway setting up tunnel |
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