WO2011160384A1 - 一种通信方法及网关设备 - Google Patents

一种通信方法及网关设备 Download PDF

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Publication number
WO2011160384A1
WO2011160384A1 PCT/CN2010/078774 CN2010078774W WO2011160384A1 WO 2011160384 A1 WO2011160384 A1 WO 2011160384A1 CN 2010078774 W CN2010078774 W CN 2010078774W WO 2011160384 A1 WO2011160384 A1 WO 2011160384A1
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WIPO (PCT)
Prior art keywords
board
terminal
gateway
network element
user
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PCT/CN2010/078774
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English (en)
French (fr)
Inventor
郭俊杰
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中兴通讯股份有限公司
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Publication of WO2011160384A1 publication Critical patent/WO2011160384A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method and a gateway device.
  • Wimax The Worldwide Interoperability for Microwave Access (Wimax) network is widely used as a communication network currently used.
  • the network side needs to include multiple functions and types of network elements, such as an AAA server that provides authentication, and an online charging system (OCS) device/offline payment that provides authorization and accounting functions.
  • OCS online charging system
  • DHCP dynamic host control
  • media surface data service device that provides content service function.
  • a large number of network elements on the network side are processed through internal and network elements. , constitutes the Wimax network.
  • the expansion of the NEs is poor. Once deployed, the NEs cannot be changed. If you need to upgrade the devices on the network, you need to re-deploy the NEs, NEs, and upgrades. The process is complex and difficult to achieve.
  • each network element on the network side has its own characteristics.
  • the home agent (HA) device needs to have strong data forwarding performance, and the authentication and authorization devices need strong real-time processing capability and higher. Security requirements.
  • HA home agent
  • Security requirements With the development of network technology, more and more enterprises need to establish an enterprise-level network architecture. If an enterprise-level network is also established according to the current network architecture deployment mode, high-performance network elements will increase the difficulty of deploying enterprise-level networks. Deployment costs.
  • the purpose of the embodiments of the present invention is to provide a communication method and a gateway device, which are used to solve the problem that the expansion performance of the network element in the network side existing in the prior art is poor, and the network element update and upgrade process is complicated and difficult to implement.
  • the present invention provides a communication method, including: The gateway determines the operation requested by the terminal according to the signaling message from the terminal, where the gateway includes multiple blade servers; the gateway determines the network element board that provides the service for the operation requested by the terminal, and the function of the network element board passes the blade type.
  • the server carries the bearer; the gateway indicates that the determined network element board provides services for the operation requested by the terminal.
  • the present invention also provides a gateway device, where the gateway device is a blade server architecture, and the function of the network element board in the gateway device is carried by the blade server, and the gateway device is set to be based on signaling messages from the terminal. Determining the operation requested by the terminal, and determining the network element board that provides the service for the operation requested by the terminal, so that the determined network element board provides services for the operation requested by the terminal.
  • the embodiment of the present invention transforms a traditional gateway into a gateway with multiple blade server architectures, and the functions of the network element boards in the gateway are carried by the blade server, so that the modified gateway integrates the functions of the gateway itself and other networks.
  • the function of the element can replace the current conventional network architecture through a blade gateway and a conventional base station, which simplifies the function expansion and maintenance of the network element.
  • FIG. 1 is a schematic diagram of a gateway structure of a blade server architecture
  • FIG. 2 is a schematic diagram of a communication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a method for transmitting a message according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic diagram of a terminal authentication operation method according to Embodiment 3 of the present invention.
  • the present invention transforms the gateway device on the network side, transforms the traditional gateway into a new type of gateway with multiple blade server architectures, and carries the data processing function of the gateway itself through at least one blade server.
  • the slot is added to the gateway, and the NE boards with various network functions are inserted into the slots.
  • the functions of the NE boards are also carried by the blade server, so that the new gateway integrates the functions of the gateway itself and other functions.
  • the function of the network element Since the functions of the network elements are carried by the blade server of the gateway, the current conventional network architecture can be replaced by a blade gateway and a conventional base station, which simplifies the function expansion and maintenance of the network element, and does not require a large number of deployments. Network element devices reduce the difficulty of deploying enterprise-class networks and deploy them into Ben.
  • the gateway involved in the embodiments of the present invention may be a gateway in the core network.
  • the gateway involved may be an Access Service Network GateWay (ASN GW).
  • ASN GW Access Service Network GateWay
  • each blade server carries the function of one type of network element board.
  • the network element board in the ASN GW includes multiple user boards that provide media plane data services, a control board that provides signaling plane services, and one for each network element board.
  • a switch board that controls and forwards information, multiple HA boards, and an AAA authentication board.
  • Each board in the ASN GW transmits data and signaling through inter-board messages.
  • the gateway has the functions of a user board, a control board, and a switch board. Therefore, the user board, the control board, and the switch board in the novel gateway of the present invention may be used.
  • the HA board and the AAA authentication board are cards that are added to the gateway slot to enhance the gateway function.
  • FIG. 1 is a schematic diagram of a gateway architecture that can be used in an embodiment of the present invention.
  • the embodiment of the present invention is not limited to modifying a gateway, and a board having a function such as a charging service and a DHCP service is added to the gateway.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • Embodiment 1 of the present invention uses a modified gateway to replace a conventional network function to provide services for a terminal.
  • Step 101 The gateway determines an operation requested by the terminal according to the signaling message from the terminal.
  • the terminal when the terminal (MS or UE) needs to perform a service operation, the terminal may access the gateway through the base station in a conventional manner to transmit the signaling message to the gateway.
  • Step 102 The gateway determines an NE board that provides services for the operation requested by the terminal.
  • the gateway determines, according to the operation requested by the terminal, the NE board involved in performing the operation.
  • Step 103 The gateway instructs the determined network element board to provide services for the operation requested by the terminal.
  • the process of the gateway indicating that the network element provides the service may be that the gateway transmits the signaling message of the terminal to the corresponding network element board, and each of the network element boards has the capability of realizing each specific function, and therefore, receiving The network element board to the signaling message can respond to the signaling message, that is, to achieve the purpose of responding to the request operation of the terminal.
  • only one enhanced gateway and the deployed base station can replace the conventional network architecture, and insert or extract a specific function into the slot in the gateway of the blade server architecture.
  • the board is convenient for extending, upgrading, or adjusting the functions of the gateway, and is suitable for application in the deployment of an enterprise network.
  • Embodiment 2 The solution of the first embodiment of the present invention is described in detail below through specific operations requested by the terminal.
  • Embodiment 2 is described in detail below through specific operations requested by the terminal.
  • the second embodiment of the present invention is a specific implementation manner of the first embodiment.
  • the network involved in the second embodiment is a Wimax network, and the gateway involved is an enhanced ASN GW.
  • a schematic diagram of the steps of the second embodiment of the present invention includes the following steps: Step 201: After the HA board is inserted into the slot of the gateway and is powered on, the HA board is registered on the switch board.
  • Step 202 The terminal sends a signaling message requesting a message transmission operation to the gateway.
  • Step A The switch board determines the available user boards in the ASN GW when it determines that the terminal needs to perform access operations.
  • Step B The switch board selects a user board from the available user boards.
  • the load of the selected user board is less than the set load.
  • the switch board performs the load balancing of the user board according to the terminal identifier, so that the load of each user board is relatively balanced. For the user board whose load is greater than the set load, the load of the user board is considered to be too large. Should not carry more terminal business needs.
  • Step C The selected user board and the terminal perform media plane data access operations, complete the access of the terminal on the user board, and assign an IP address and a general routing encapsulation protocol identifier (Gre Key) to the terminal, where: Gre is A general routing encapsulation protocol, Gre key is an extension field of the general routing encapsulation protocol that identifies a service flow encapsulated by the Gre protocol.
  • Gre is A general routing encapsulation protocol
  • Gre key is an extension field of the general routing encapsulation protocol that identifies a service flow encapsulated by the Gre protocol.
  • Step D The switch board selects an HA board for the terminal from the available HA boards.
  • the switch board can also select the HA board for the terminal according to the principle of load balancing. If the terminal has been connected to the Wimax network, the switch board records the corresponding terminal.
  • the switch board can directly select the HA board corresponding to the terminal.
  • Step E The switch board performs load association between the user board selected by the terminal and the HA board.
  • Step F Control the board and the terminal to perform the signaling plane access operation, and complete the access of the terminal on the control board.
  • Step G The switch board associates the user card selected by the terminal with the HA board through the terminal ID, the IP address of the terminal, and the Gre Key.
  • the switch board records the parameters and boards required for the packet transmission operation after the terminal accesses the Wimax.
  • Step 203 During the uplink packet transmission, the switching board receives the Gre message sent by the terminal, and the corresponding user card is determined according to the Gre Key in the packet, and the Gre message is sent to the user board.
  • Step 204 The user board that receives the Gre message queries the associated HA board, and sends the Gre message to the HA board.
  • the user board can query the associated HA board through the inter-board communication between the board and the board.
  • the board can be used to exchange the user board with the HA through the IP address and Gre Key.
  • the board is associated, the related information is sent to the user board and the HA board.
  • Step 205 The HA board forwards the packet to the high-level network element, that is, the network element in the Internet network, and completes the uplink transmission operation of the packet.
  • Step 206 When the downlink packet is transmitted, the switching board receives the packet sent by the high-level network element, determines the corresponding HA board according to the IP address in the packet, and sends the packet to the corresponding HA. veneer.
  • Step 207 The HA board queries the associated user card, and sends the received packet to the user board.
  • Step 208 The user board sends the packet to the terminal according to the IP address in the packet and the context information of the terminal accessing, and completes the downlink transmission operation of the packet.
  • the forwarding mode of the HA board in order to enable the HA board to have a strong forwarding capability, can be set to a composite mode of multiple blade servers, and the ASN GW provides two interface addresses, one for the external interface. It is the address of the ASN GW R3 interface, and the address of the HA board.
  • the MIP session can still be established between the control board and the HA board, and the MIP signaling of the ASN GW R3 interface becomes an inter-board message, further improving signaling. The reliability of the transmission.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the third embodiment of the present invention is a specific implementation manner of the first embodiment, and the network involved in the third embodiment is a Wimax network, and the gateway involved is an enhanced ASN GW.
  • Step 301 After the AAA authentication board is inserted into the slot of the gateway and the device is powered on, the AAA authentication board is registered on the exchange board.
  • Step 302 The terminal sends a signaling message requesting the terminal to perform the terminal authentication operation to the gateway.
  • the terminal also needs to access the Wimax network. Since the terminal authentication operation does not need to perform the media plane data access operation, the terminal needs to complete the access on the control board. After the terminal accesses the control board, the switch board associates the control board with the AAA authentication board.
  • Step 303 The switching board sends a signaling message to the control board.
  • Step 304 The control board queries the associated AAA authentication board, and sends the authentication signaling including the terminal identifier to the AAA authentication board.
  • the control board can query the associated AAA authentication board through the inter-board communication between the board and the switch board. The association information is sent to the control board and the AAA authentication board.
  • Step 305 After the AAA authentication board authenticates the terminal, the AAA authentication board returns the authentication result to the control board.
  • the internal forwarding of the signaling message is performed by the switch board to ensure the independence of the boards.
  • the AAA authentication board is only responsible for processing the authentication and authorization functions of the terminal on the ASN GW. You can save external IP address resources without providing external addresses.
  • the solution of the first embodiment can be applied to the operation of performing IP address allocation for the terminal through the DHCP board, and the charging operation for the terminal through the OCS/OFCS board. .
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the fourth embodiment of the present invention provides a gateway device.
  • the structure of the gateway device can be as shown in FIG. 1 , including a switch board, a control board, and a user board to complete gateway-to-terminal access and data forwarding.
  • the switching board is configured to determine the operation requested by the terminal according to the signaling message from the terminal, and determine the network element board that provides the service for the operation requested by the terminal, and then the determined network element board provides the operation requested by the terminal.
  • the process of providing a service for the operation requested by the terminal may be performed by the determined network element board and the switching board.
  • the gateway in this embodiment may be an ASN GW.
  • the network board in the gateway includes at least a user board, a control board, and a switch board.
  • the network board in the gateway further includes an HA board.
  • the switch board is configured to: when the operation requested by the terminal is a packet transmission operation, select a load from multiple user boards according to the operation requested by the terminal.
  • the user board that is smaller than the set load, and the IP address assigned to the terminal by the selected user board, and the Gre Key, the user board is associated with the HA board; accordingly, the user board is set to be in the determining terminal. After the terminal access operation is completed on the control board and the user board, the terminal is assigned an IP address and a Gre Key.
  • the network element board in the gateway further includes: an AAA authentication board, where the switch board is configured to: perform AAA authentication of the terminal authentication operation when the operation requested by the terminal is a terminal authentication operation.
  • the board is associated with the control board, and sends a signaling message requesting the terminal to perform the authentication operation to the control board.
  • the control board is configured to send the terminal identifier carried in the received signaling message to the associated AAA.
  • the authentication board sends the authentication result returned by the AAA authentication board to the terminal.
  • the gateway and the base station of the blade server architecture can complete the functions of various large-scale devices.
  • the network element boards in the gateway can be directly extended, and the gateway can automatically The extended board is processed and maintained, so that the scalability of each NE card in the gateway is better. For example, if the HA performance is required, the number of HA boards can be increased within the gateway. If the functions of the HA board are not affected, the functions of the intra-area terminals can be provided.
  • the gateway in the present invention is particularly suitable for the network construction needs of enterprise users. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions
  • the present invention simplifies the function expansion of the network element by transforming the traditional gateway into a gateway with multiple blade server architectures, and the functions of the network element boards in the gateway are carried by the blade server. maintain.

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Abstract

本发明公开了一种通信方法及网关设备，主要内容包括：通过将传统的网关改造为具有多个刀片式服务器架构的网关，且网关中网元单板的功能通过刀片式服务器承载，使改造后的网关整合了网关自身的功能以及其他网元的功能，通过一台刀片式网关以及常规的基站就可以替代目前常规的网络架构，简化了对网元的功能扩展和维护。

Description

一种通信方法及网关设备
技术领域
本发明涉及通信技术领域， 尤其涉及一种通信方法及网关设备。
背景技术
微波存取全球互通 ( Worldwide Interoperability for Microwave Access, Wimax ) 网络作为目前常用的通信网络得到广泛应用。 对于一个 Wimax网络 架构而言， 网络侧需要包含多种功能和类型的网元， 如提供鉴权功能的 AAA 服务器， 提供授权、 计费功能的在线付费 （ Online charging system, OCS )设 备 /离线付费（ Offline charging system, OFCS 殳备，提供动态主机控制（ DHCP ) 服务的 DHCP服务器， 以及提供内容服务功能的媒体面数据业务设备等。 网 络侧的大量网元通过内部以及网元之间的信息处理， 构成 Wimax网络。
目前的网络侧（包括 Wimax网络在内的核心网 ) 内部的网元的扩展性能 较差， 一旦部署就无法改变， 如果需要对网络侧进行设备升级就需要重新部 署网元， 网元更新、 升级过程复杂， 难以实现。
另夕卜， 网络侧的各网元都具有自身的特性， 如家乡代理（ Home Agent , HA )设备需要有较强的数据转发性能， 鉴权、 授权设备需要较强的实时处理 能力以及较高的安全性要求。 随着网络技术的发展， 越来越多的企业需要建 立针对企业级的网络架构， 如果也按照目前的网络架构部署方式建立企业级 网络， 高性能的网元会增加企业级网络的部署难度以及部署成本。
发明内容
本发明实施例的目的在于提供一种通信方法及网关设备， 用以解决现有 技术中存在的网络侧内部的网元的扩展性能较差， 以及网元更新、 升级过程 复杂， 难以实现的问题。 本发明提供一种通信方法， 包括： 网关根据来自终端的信令消息确定终端请求的操作， 所述网关包括多个 刀片式服务器； 网关确定为终端请求的操作提供服务的网元单板， 所述网元 单板的功能通过刀片式服务器承载； 网关指示确定的网元单板为终端请求的 操作提供服务。
本发明还提供一种网关设备， 所述网关设备为刀片式服务器架构， 网关 设备内的网元单板的功能通过所述刀片式服务器承载， 所述网关设备设置成 根据来自终端的信令消息确定终端请求的操作， 并确定为终端请求的操作提 供服务的网元单板， 以使所确定的网元单板为终端请求的操作提供服务。
本发明实施例通过将传统的网关改造为具有多个刀片式服务器架构的网 关， 且网关中网元单板的功能通过刀片式服务器承载， 使改造后的网关整合 了网关自身的功能以及其他网元的功能， 通过一台刀片式网关以及常规的基 站就可以替代目前常规的网络架构， 简化了对网元的功能扩展和维护。
附图概述
图 1为刀片式服务器架构的网关结构示意图；
图 2为本发明实施例一通信方法示意图；
图 3为本发明实施例二报文传输操作方法示意图；
图 4为本发明实施例三终端认证操作方法示意图。
本发明的较佳实施方式
为实现本发明目的， 本发明对网络侧的网关设备进行改造， 将传统的网 关改造为具有多个刀片式服务器架构的新型网关， 将网关自身具有的数据处 理功能通过至少一个刀片服务器来承载， 并在网关中增加插槽， 将具有各种 网络功能的网元单板插入插槽， 将这些网元单板的功能也通过刀片服务器来 承载， 使得新型的网关整合了网关自身的功能以及其他网元的功能。 由于各 网元的功能通过网关的刀片服务器来承载， 通过一台刀片式网关以及常规的 基站就可以替代目前常规的网络架构， 简化了对网元的功能扩展和维护， 且 由于不需要部署大量的网元设备， 降低了企业级网络的部署难度以及部署成 本。
下面结合说明书附图对本发明实施例进行详细描述。
本发明各实施例中涉及的网关可以是核心网中的网关，例如：针对 Wimax 网络， 涉及的网关可以是接入服务网络网关 （ Access Service Network GateWay, ASN GW ) 。 以 ASN GW为例， 釆用图 1所示的刀片式服务器架 构的网关中， 每一个刀片服务器承载一种网元单板的功能。 在图 1所示的架 构图中， ASN GW中的网元单板包括多个提供媒体面数据业务的用户单板、 一个提供信令面业务的控制单板、 一个对各网元单板进行控制并进行信息转 发的交换单板、多个 HA单板以及一个 AAA认证单板。 ASN GW内的各单板 通过板间消息进行数据和信令的传输。 需要说明的是， 对于一个常规网关而 言， 网关具有用户单板、 控制单板和交换单板的功能， 因此， 本发明涉及的 新型网关中的用户单板、 控制单板和交换单板可以是网关将自身的数据处理 功能承载在刀片上得到的单板， HA单板和 AAA认证单板是根据实际需求在 网关的插槽内插入的用于增强网关功能的单板。
图 1是本发明实施例可用的一种网关架构示意图， 本发明实施例也不限 于对网关进行改造， 以及在网关中增加具有诸如计费服务、 DHCP服务功能 的单板。
实施例一：
如图 2所示， 为本发明实施例一中的通信方法示意图， 本发明实施例一 利用改造后的网关来替代常规的网络功能， 为终端提供服务。
本发明实施例一的方案包括以下步骤：
步骤 101 : 网关根据来自终端的信令消息确定终端请求的操作。
本步骤中， 终端 （MS或 UE )在需要进行业务操作时， 可以按照常规方 式通过基站接入网关， 将信令消息传递至网关。
步骤 102: 网关确定为终端请求的操作提供服务的网元单板。
在本步骤中， 网关根据终端请求的操作确定为执行该操作需要涉及到的 网元单板。
步骤 103: 网关指示确定的网元单板为终端请求的操作提供服务。 在本步骤中， 网关指示网元单板提供服务的过程可以是网关将终端的信 令消息传输给相应的网元单板, 由于各网元单板具有实现各自特定功能的能 力， 因此， 接收到信令消息的网元单板可以响应该信令消息， 也就是达到响 应终端请求操作的目的。
通过上述实施例一的方案， 只需要一台增强型的网关以及部署的基站就 可以替代常规的网络架构， 通过对刀片式服务器架构的网关内的插槽中插入 或拔出具有特定功能的单板， 方便对网关的功能进行扩展、 升级或调整， 适 合应用在企业级网络的部署中。
下面通过终端请求的具体操作对本发明实施例一的方案进行详细说明。 实施例二：
本发明实施例二以终端请求的操作为报文传输操作为例， 来说明实施例 一的具体实现方式， 本实施例二涉及的网络为 Wimax网络， 涉及的网关为增 强的 ASN GW。
如图 3所示， 为本发明实施例二的步骤示意图， 包括以下步骤： 步骤 201 : HA单板插入网关的插槽且上电后， HA单板在交换单板进行 注册。
在本步骤中， 当有新的单板插入网关时， 在开机上电后， 新插入的单板 需要在交换板进行注册， 将自身的信息 （如： 标识、 负载能力等）发送给交 换单板。
步骤 202: 终端向网关发送请求进行报文传输操作的信令消息。
在本步骤中 ,终端在向网关发送请求进行报文传输操作的信令消息之前， 还应该先接入 Wimax网络， 因此， 需要进行接入流程， 由于进行报文传输操 作需要涉及 HA单板、 用户单板、 交换单板和控制单板， 因此， 接入流程的 具体步骤如下： 步骤 A: 交换单板在确定需要为终端进行接入操作时， 确定 ASN GW中 的可用的用户单板。
步骤 B: 交换单板从可用的用户单板中选择一个用户单板， 选择的用户 单板的负荷小于设定负荷。 在本步骤中， 交换单板根据终端标识进行用户单板的负荷分担， 使各用 户单板的负荷相对均衡， 对于负荷大于设定负荷的用户单板， 认为该用户单 板的负荷过大， 不应再承载更多终端的业务需求。
步骤 C: 选择的用户单板与终端进行媒体面数据接入操作， 完成终端在 用户单板上的接入， 并为终端分配 IP地址以及通用路由封装协议标识（ Gre Key ) , 其中： Gre是通用路由封装协议， Gre key是通用路由封装协议的扩 展字段标识用 Gre协议封装的一条业务流。
步骤 D: 交换单板从可用的 HA单板中为终端选择一个 HA单板。
本步骤中， 交换单板也可以按照负荷均衡的原则为终端选择 HA单板。 如果终端之前已接入过 Wimax 网络， 交换单板中记录了该终端对应的
HA单板， 则本步骤中， 交换单板可以直接选择终端对应的 HA单板。
步骤 E: 交换单板将为终端选择的用户单板和 HA单板进行负荷关联。 步骤 F: 控制单板与终端进行信令面接入操作， 完成终端在控制单板上 的接入。
步骤 G: 交换单板通过终端标识、 终端的 IP地址、 Gre Key将为终端选 择的用户单板和 HA单板关联。
此时， 交换单板上记录了终端接入 Wimax后进行报文传输操作时所需要 的各参数以及单板。
步骤 203: 在上行报文传输时， 交换单板接收终端发送的 Gre报文， 根 据报文中携带 Gre Key确定对应的用户单板， 并将该 Gre报文发送至该用户 单板中。
步骤 204: 接收到 Gre报文的用户单板查询关联的 HA单板， 并将该 Gre 报文发给 HA单板。
在本步骤中， 用户单板可以通过与交换单板之间进行的板间消息通信查 询关联的 HA单板， 也可以是在交换单板通过 IP地址、 Gre Key等信息将用 户单板与 HA单板关联时， 将关联信息分别发送给用户单板和 HA单板。
步骤 205： HA单板将报文转发至高层网元， 即 Internet网络中的网元， 完成报文的上行传输操作。 步骤 206: 在下行报文传输时， 交换单板接收到高层网元发送的报文时， 根据报文中的 IP地址确定对应的 HA单板， 并将该报文发送至所述对应的 HA单板。
步骤 207: HA单板查询关联的用户单板， 并将接收到的报文发送给该用 户单板。
步骤 208：用户单板根据报文中的 IP地址以及终端接入时的上下文信息， 将该报文发送给终端， 完成报文的下行传输操作。
在本实施例二的方案中， 为了使 HA单板有较强的转发能力， 可以设定 HA单板的转发方式为多个刀片服务器的复合分担方式， ASN GW对外提供 两个接口地址， 一个是 ASN GW R3接口地址， 一个是 HA单板的地址。 另 夕卜， 在实施例二的方式下， 控制单板和 HA单板之间仍可以进行 MIP会话的 建立， ASN GW R3接口的 MIP信令就变成了板间消息， 进一步提高了信令 传输的可靠性。
实施例三：
本发明实施例三以终端请求的操作为终端认证操作为例， 来说明实施例 一的具体实现方式， 本实施例三涉及的网络为 Wimax网络， 涉及的网关为增 强的 ASN GW。
如图 4所示， 为本发明实施例三的步骤示意图， 包括以下步骤： 步骤 301 : AAA认证单板插入网关的插槽且上电后， AAA认证单板在交 换单板进行注册。
步骤 302: 终端向网关发送请求进行终端认证操作的信令消息。
与实施例二类似地， 在本步骤中， 终端也需要接入 Wimax网络， 由于终 端认证操作不需要进行媒体面数据接入操作， 因此， 需要完成终端在控制单 板上的接入。在终端接入控制单板后， 交换单板将该控制单板和 AAA认证单 板关联。
步骤 303: 交换单板将信令消息发送给控制单板。
步骤 304: 控制单板查询关联的 AAA认证单板， 并将包含终端标识的认 证信令发给 AAA认证单板。 在本步骤中， 控制单板可以通过与交换单板之间进行的板间消息通信查 询关联的 AAA认证单板， 也可以是在交换单板将控制单板与 AAA认证单板 关联时， 将关联信息发送给控制单板和 AAA认证单板。
步骤 305: AAA认证单板对终端进行认证后， 向控制单板返回认证结果。 步骤 306: 控制单板将认证结果发送给终端， 完成对终端的认证操作。 在上述本实施例二、三的方案中， 通过交换板进行信令消息的内部转发， 保证各单板的独立性， 例如： AAA认证单板只负责处理 ASN GW上终端的 认证、 授权功能， 可以不提供对外的地址， 节省内部 IP地址资源。
除了上述实施例二和实施例三的方案外， 实施例一的方案还可以应用于 通过 DHCP单板为终端进行 IP地址分配的操作、应用于通过 OCS/OFCS单板 为终端进行计费操作等。
实施例四：
本发明实施例四提供一种网关设备，该网关设备的结构可以如图 1所示， 包括交换单板、 控制单板以及用户单板来完成网关对终端的接入以及数据转 发的功能。 特别地， 交换单板设置成根据来自终端的信令消息确定终端请求 的操作， 并确定为终端请求的操作提供服务的网元单板， 然后由确定的网元 单板为终端请求的操作提供服务， 实际为终端请求的操作提供服务的过程可 由确定的网元单板和交换单板协同运行。
本实施例中的网关可以为 ASN GW, 网关中的网元单板至少包括： 用户 单板、 控制单板和交换单板。
该网关中的网元单板还包括 HA单板， 其中， 交换单板设置成： 在终端 请求的操作为报文传输操作时， 根据终端请求的操作从多个用户单板中选择 承载的负荷小于设定负荷的用户单板， 以及通过选择的用户单板为终端分配 的 IP地址、 Gre Key将该用户单板与 HA单板关联； 相应地， 所述用户单板 设置成在确定终端在控制单板和用户单板上完成终端接入操作后， 为终端分 配 IP地址和 Gre Key。
该网关中的网元单板还包括： AAA认证单板， 其中， 所述交换单板设置 成： 在终端请求的操作为终端认证操作时，将执行终端认证操作的 AAA认证 单板和控制单板关联， 并将请求为终端进行认证操作的信令消息发送给控制 单板； 所述控制单板设置成将接收到的信令消息中携带的终端标识发给关联 的 AAA认证单板， 并将 AAA认证单板返回的认证结果发送给终端。
通过本发明各实施例的方案， 只需要一台刀片式服务器架构的网关和基 站便可以完成各种大型设备的功能， 本方案中可以直接对网关内网元单板进 行扩展， 网关内部能够自动处理扩展的单板， 并对其进行维护， 使网关内部 各网元单板的可扩展性较优。 例如： 如果需要较高的 HA性能， 则可以在网 关内部增加 HA单板的数量， 在 HA单板自身的功能不受影响的情况下， 还 能够提供给企业内部终端跨地区访问的功能。 本发明中的网关尤其适用于企 业级用户的建网需求。 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。
工业实用性
与现有技术相比， 本发明通过将传统的网关改造为具有多个刀片式服务 器架构的网关， 且网关中网元单板的功能通过刀片式服务器承载， 简化了对 网元的功能扩展和维护。

Claims

权 利 要 求 书
1、 一种通信方法， 包括：
网关根据来自终端的信令消息确定终端请求的操作， 所述网关包括多个 刀片式服务器；
网关确定为终端请求的操作提供服务的网元单板， 所述网元单板的功能 通过刀片式服务器承载； 以及，
网关指示确定的网元单板为终端请求的操作提供服务。
2、如权利要求 1所述的方法， 其中， 所述网关为接入服务网络网关 ASN GW, 所述 ASN GW中的网元单板至少包括： 提供媒体面数据业务的用户单 板、 提供信令面业务的控制单板以及对各网元单板进行控制并进行信息转发 的交换单板。
3、 如权利要求 2所述的方法， 其中， 所述终端请求的操作为报文传输操 作； 所述 ASN GW中的网元单板还包括： HA单板；
网关确定为终端请求的操作提供服务的网元单板的步骤包括：
交换单板根据终端请求的操作从多个用户单板中选择承载的负荷小于设 定负荷的用户单板；
所述方法在网关确定为终端请求的操作提供服务的网元单板的步骤之 后， 且在网关指示所确定的网元单板为终端提供服务的步骤之前， 还包括： 选择的用户单板在确定终端在控制单板和该用户单板上完成终端接入操 作后， 为终端分配 IP地址和通用路由封装协议标识 Gre Key;
交换单板通过所述 IP地址、 Gre Key将为该终端选择的用户单板与所述 HA单板关联。
4、 如权利要求 3所述的方法， 其中， 网关指示确定的网元单板为终端请 求的操作提供服务的步骤包括：
在上行报文传输时， 交换单板接收到终端发送的报文时， 根据该报文中 的 Gre Key确定用户单板， 并将该报文发送至所确定的用户单板；
该用户单板将接收到的报文发送给与该用户单板关联的 HA单板， 由该 HA单板将报文转发至高层网元。
5、 如权利要求 3所述的方法， 其中， 网关指示确定的网元单板为终端请 求的操作提供服务的步骤包括：
在下行报文传输时， 交换单板接收到高层网元发送的报文时， 根据报文 中的 IP地址确定 HA单板， 并将该报文发送至所确定的 HA单板；
HA单板将接收到的报文发送给与该 HA单板关联的用户单板，由该用户 单板根据报文中的 IP地址将该报文发送给终端。
6、 如权利要求 2所述的方法， 其中， 所述终端请求的操作为终端认证操 作； 所述 ASN GW中的网元单板还包括： AAA认证单板；
网关确定为终端请求的操作提供服务的网元单板的步骤包括：
交换单板根据终端请求的操作确定 AAA认证单板， 并将所确定的 AAA 认证单板和控制单板关联；
网关指示确定的网元单板为终端请求的操作提供服务的步骤包括： 交换单板将请求为终端进行认证操作的信令消息发送给控制单板； 控制单板将接收到的信令消息中携带的终端标识发给与该控制单板关联 的 AAA认证单板， 并将 AAA认证单板返回的认证结果发送给终端。
7、 一种网关设备， 其特征在于， 所述网关设备为刀片式服务器架构， 所 述网关设备内的网元单板的功能通过所述刀片式服务器承载， 所述网关设备 设置成： 根据来自终端的信令消息确定终端请求的操作， 并确定为终端请求 的操作提供服务的网元单板， 以使所确定的网元单板为终端请求的操作提供 服务。
8、 如权利要求 7所述的网关设备， 其中，
所述网关为接入服务网络网关 ASN GW,所述 ASN GW中的网元单板至 少包括：
提供媒体面数据业务的用户单板、 提供信令面业务的控制单板和对各网 元单板进行控制并进行信息转发的交换单板。
9、 如权利要求 8所述的网关设备， 其中， 所述 ASN GW中的网元单板还包括： HA单板；
所述用户单板设置成： 在确定终端在控制单板和本用户单板上完成终端 接入操作后 , 为终端分配 IP地址和 Gre Key;
所述交换单板是设置成通过如下方式对各网元单板进行控制： 在所述终 端请求的操作为报文传输操作时， 根据终端请求的操作从多个用户单板中选 择承载的负荷小于设定负荷的用户单板， 以及， 通过选择的用户单板为终端 分配的 IP地址、 通用路由封装协议标识 Gre Key将该用户单板与所述 HA单 板关联。
10、 如权利要求 8所述的网关设备， 其中，
所述 ASN GW中的网元单板还包括： AAA认证单板；
所述交换单板是设置成通过如下方式对各网元单板进行控制并进行信息 转发： 在终端请求的操作为终端认证操作时，将执行终端认证操作的 AAA认 证单板和控制单板关联， 并将请求为终端进行认证操作的信令消息发送给控 制单板；
所述控制单板设置成将接收到的信令消息中携带的终端标识发给与该控 制单板关联的 AAA认证单板， 并将该 AAA认证单板返回的认证结果发送给 终端。
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