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WO2014161319A1 - 一种实现控制与承载分离的方法及接入网系统 - Google Patents

一种实现控制与承载分离的方法及接入网系统 Download PDF

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Publication number
WO2014161319A1
WO2014161319A1 PCT/CN2013/087604 CN2013087604W WO2014161319A1 WO 2014161319 A1 WO2014161319 A1 WO 2014161319A1 CN 2013087604 W CN2013087604 W CN 2013087604W WO 2014161319 A1 WO2014161319 A1 WO 2014161319A1
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WO
WIPO (PCT)
Prior art keywords
pbg
pdsn
user terminal
route
bearer
Prior art date
Application number
PCT/CN2013/087604
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English (en)
French (fr)
Inventor
王飞
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014161319A1 publication Critical patent/WO2014161319A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements

Definitions

  • the present invention relates to communication technologies, and in particular, to a method for implementing control and bearer separation and an access network system. Background technique
  • China Telecom's wireless broadband service integration called Code Division Multiple Access (CDMA) + 3G, the 3rd Generation network + WLAN (Wireless Local Area Networks)
  • CDMA Code Division Multiple Access
  • 3G the 3rd Generation network + WLAN (Wireless Local Area Networks)
  • CDMA Code Division Multiple Access
  • WLAN Wireless Local Area Networks
  • C+W The abbreviation "C+W” network is a key product for China Telecom to transform from a fixed-line operator to a full-service operator. Users of China Telecom's C+W service can choose which network to use under the coverage of telecom signals.
  • FIG. 1 is a schematic diagram of the existing C+W network architecture.
  • WAG wireless access gateway
  • the WAG server forwards data from a packet service data node (PDSN, Package Data Service Node) on the network side.
  • PDSN packet service data node
  • the WAG server handles both control plane data and bearer plane data.
  • WAG servers are rare resources, and each province's WAG servers have only one or two; and, when there are two WAG servers, they are divided into primary servers and standby servers, which actually work. Only the primary WAG server works, and the standby WAG server works only when the primary WAG server crashes.
  • the main purpose of the embodiments of the present invention is to provide a method for implementing control and bearer separation and an access network system, which can reduce the load of the WAG server and improve the stability of the C+W service.
  • An embodiment of the present invention provides a method for implementing control and bearer separation, where the method is applied to an access network system, where the access network system includes a wireless access gateway WAG server, a packet service data node PDSN, and one or more point-to-point protocols.
  • the data bearer gateway PBG; the method further includes:
  • the WAG server When receiving the service request sent by the user terminal, the WAG server selects, for the user terminal, a PBG that carries bearer plane data of the service;
  • Transmitting plane data of the service related to the user terminal is transmitted through a route between the PBG and the PDSN.
  • the method further includes:
  • the WAG server notifies the user terminal of the information of the PBG
  • the method further includes:
  • the WAG server When receiving the service termination request sent by the user terminal, the WAG server notifies the PBG to release the route between the PBG and the PDSN.
  • the method further includes:
  • the route between the user terminal and the PBG is released.
  • the notifying the PBG to establish a route between the PBG and the PDSN includes:
  • the PBG establishes a PBG to PDSN route according to the Internet Protocol IP address information and port information allocated by the PDSN carried in the request for the enhanced bearer channel to the user terminal, and
  • the WAG server returns the bearer channel identity code assigned to the user terminal by the PBG.
  • the notifying the PBG to release the route between the PBG and the PDSN includes:
  • the PBG deletes the route from the PBG to the PDSN according to the bearer channel ID carried in the request for deleting the bearer channel, and returns a response of deleting the bearer channel to the WAG server.
  • the embodiment of the present invention further provides an access network system that implements control and bearer separation, and the access network system includes: a wireless access gateway WAG server, a packet service data node PDSN, and one or more point-to-point protocol data bearer gateways PBG; among them,
  • the WAG server is configured to: when receiving the service request sent by the user terminal, select a PBG that carries the bearer plane data of the service for the user terminal; and notify the PBG to establish a route between the PBG and the PDSN. ;
  • the PBG is configured to establish a route between the PBG and the PDSN, and transmit, by using the route between the PBG and the PDSN, bearer plane data of the service related to the user terminal.
  • the WAG server is further configured to notify the user terminal of the information of the PBG, so that the user terminal establishes a route between the user terminal and the PBG.
  • the WAG server is further configured to notify the PBG to release a route between the PBG and the PDSN when receiving a service termination request sent by the user terminal.
  • the WAG server is further configured to send an increase bearer channel request to the PDSN;
  • the PBG is further configured to: establish a PBG-to-PDSN route according to the Internet Protocol IP address information and port information allocated by the PDSN carried in the request to the user terminal, and return the PBG to the WAG server. Adding a bearer channel ID of the bearer channel identity code assigned by the user terminal;
  • the WAG server is further configured to send a delete bearer channel request to the PDSN;
  • the PBG is further configured to delete a route of the PBG to the PDSN according to the bearer channel ID carried in the request for deleting the bearer channel, and return a response of deleting the bearer channel to the WAG server.
  • the WAG server separates the control plane data from the bearer plane data, and the Point to Point Protocol Bearing Gateway (PBG) is based on the WAG month.
  • PBG Point to Point Protocol Bearing Gateway
  • the increased bearer channel sent by the server requests to establish a PBG-to-PDSN route.
  • the user terminal After the user-to-PBG route and the PBG-to-PDSN route are established, the user terminal performs bearer data transmission through the PBG and the PDSN. In this way, by adding PBG to process the bearer plane data, the load of the WAG server is reduced, and the capacity and performance of the WAG server are effectively improved.
  • Figure 1 is a schematic diagram of an existing C+W network architecture
  • FIG. 2 is a schematic diagram of an implementation process of a method for implementing control and bearer separation according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a structure of an access network system for implementing control and bearer separation according to an embodiment of the present invention
  • 4 is a schematic structural diagram of an access network system for implementing control and bearer separation according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an authentication process according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of PPP dialing processing after successful authentication according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of disconnecting PPP dialing processing according to an embodiment of the present invention.
  • the user terminal, the WAG server, and the PBG respectively support the following conditions:
  • the user terminal supports the following conditions:
  • the WAG server supports the following conditions:
  • the WAG server encapsulates parameters such as an IP address, a port number, and a bearer channel ID of the PBG application into a private header field, and adds the message to the Invite 200 OK message.
  • the format of the Invite 200 OK message is as follows:
  • tunnelID-id XXX 0
  • the WAG server (1) receiving an increase bearer channel request from the WAG server, and establishing a PBG to PDSN route request according to the Internet Protocol IP address information and port information allocated by the PDSN carried in the bearer channel request to the user terminal;
  • the WAG server returns an increased bearer channel response carrying a bearer channel identity code (ID, IDentity) allocated by the PBG to the user terminal;
  • ID bearer channel identity code
  • FIG. 2 is a schematic flowchart of an implementation of a method for implementing control and bearer separation according to an embodiment of the present invention.
  • the method is applied to an access network system, where the access network system includes a WAG server, a PDSN, and one or more PBGs;
  • the method for implementing control and bearer separation in this embodiment includes the following steps:
  • Step 201 When the WAG server receives the service request sent by the user terminal, the PBG that carries the bearer plane data of the service is selected for the user terminal.
  • Step 202 The PBG is notified to establish a route between the PBG and the PDSN, and the bearer plane data of the service related to the user terminal is transmitted through a route between the PBG and the PDSN.
  • the method further includes:
  • the WAG server notifies the user terminal of the information of the PBG
  • the method further includes:
  • the WAG server When receiving the service termination request sent by the user terminal, the WAG server notifies the PBG to release the route between the PBG and the PDSN.
  • the method further includes:
  • the route between the user terminal and the PBG is released.
  • the service termination request generally refers to a Bye request.
  • the notifying the PBG to establish a route between the PBG and the PDSN includes:
  • the PBG establishes a PBG to PDSN route according to the IP address information and the port information allocated by the PDSN carried in the request for the user terminal, and returns a bearer channel that the PBG carries the terminal to the WAG server.
  • the increase in ID carries the channel response.
  • the method further includes:
  • the WAG server After receiving the Invite message sent by the user equipment, the WAG server initiates a Generic Routing Encapsulation (GRE) tunnel registration request to the PDSN, and requests the PDSN to establish a GRE tunnel.
  • GRE Generic Routing Encapsulation
  • the PDSN After completing the establishment of the GRE tunnel, the PDSN returns a GRE tunnel registration response to the WAG server; after receiving the GRE tunnel registration response, the WAG server sends an add bearer channel request to the PBG.
  • the method further includes:
  • the WAG server After receiving the service termination request message sent by the user terminal, the WAG server obtains the bearer channel ID of the current PBG from the service termination request message, and sends a delete bearer channel to the PBG. Request.
  • the method further includes:
  • the WAG server returns an Invite success message carrying the private header field information of the PBG to the user terminal;
  • the terminal After receiving the Invite success message, the terminal locally establishes a route from the terminal to the PBG.
  • the private header domain information of the PBG includes at least the following information:
  • channel ID of the PBG IP address, port number, and 7
  • IP address, port number, and flow identifier of the PDSN IP address, port number, and flow identifier of the PDSN
  • the request to increase the bearer channel includes at least the following information:
  • WIFI IP and port number PDSN IP and port
  • the GRE tunnel registration response message carries the private header field information of the PDSN.
  • the method before the WAG server receives the Invite message sent by the user terminal, the method further includes:
  • the user terminal automatically initiates unified authentication and authentication, and sends an Invite message to the WAG server after the authentication succeeds.
  • the notifying the PBG to release the route between the PBG and the PDSN includes:
  • the PBG deletes the route from the PBG to the PDSN according to the bearer channel ID carried in the request for deleting the bearer channel, and returns a response of deleting the bearer channel to the WAG server.
  • FIG. 3 is a schematic structural diagram of a structure of an access network system for implementing control and bearer separation according to an embodiment of the present invention.
  • the access network system includes: a WAG server, a PDSN, and a On PBG; among them,
  • the WAG server is configured to: when receiving the service request sent by the user terminal, select a PBG that carries the bearer plane data of the service for the user terminal; and notify the PBG to establish a route between the PBG and the PDSN. ;
  • the PBG is configured to establish a route between the PBG and the PDSN, and transmit, by using the route between the PBG and the PDSN, bearer plane data of the service related to the user terminal.
  • the WAG server is further configured to notify the user terminal of the information of the PBG, so that the user terminal establishes a route between the user terminal and the PBG.
  • the WAG server is further configured to: when receiving the service termination request sent by the user terminal, notify the PBG to release the route between the PBG and the PDSN.
  • the WAG server is further configured to send an increase bearer channel request to the PDSN;
  • the PBG is further configured to: establish a PBG-to-PDSN route according to the Internet Protocol IP address information and port information allocated by the PDSN carried in the request to the user terminal, and return the PBG to the WAG server.
  • the WAG server is further configured to send a delete bearer channel request to the PDSN;
  • the PBG is further configured to delete a route of the PBG to the PDSN according to the bearer channel ID carried in the request for deleting the bearer channel, and return a response of deleting the bearer channel to the WAG server.
  • FIG. 4 is a schematic structural diagram of an access network system for implementing control and bearer separation according to an embodiment of the present invention.
  • the access network system architecture includes: a user terminal, an access node (AP, Access Point), and an interface.
  • An access node configured to provide a WIFI wireless link for the user terminal
  • the access node ensures that the user terminal can access the network side.
  • the AN-AAA server is configured to provide authentication data and authentication data for the WAG server, and charge the access user.
  • the PDSN is configured to establish a user terminal Point-to-Point Protocol (PPP) link, transmit a route of the terminal service flow to the service network, and perform charging for the terminal service flow.
  • PPP Point-to-Point Protocol
  • the access node, the AN-AAA server, and the PDSN have the same functions as the access network system in the C+W network in the prior art.
  • the access network system architecture further includes: a WAG server and one or more PBGs;
  • the WAG server is configured to separate the control plane data from the bearer plane data; and is further configured to send a request for adding or deleting a bearer channel to the PBG;
  • the PBG is configured to establish/release a route of the PBG to the PDSN according to the add/delete bearer channel request sent by the WAG server.
  • the WAG server is configured to process signaling conversion, service differentiation and aggregation, service flow routing, and the like when the terminal accesses the mobile core network, and shields the broadband network from the mobile core network.
  • the PBG is configured to carry PPP service data separated from the WAG server.
  • the system further includes: a local area network switch (LANS), configured to aggregate routes of each PBG, and configured to forward IP packets.
  • LSS local area network switch
  • the PBG is further configured to:
  • the PBG to the PDSN After receiving the request for the increase of the bearer channel sent by the WAG server, the PBG to the PDSN is established according to the IP address information and the port information allocated by the PDSN carried in the request to the user terminal, and is returned to the WAG server. PBG is the user terminal The assigned 7
  • the route of the PBG to the PDSN is deleted according to the bearer channel ID carried in the request for deleting the bearer channel, and the response of the bearer channel is deleted from the WAG server.
  • the WAG server is further configured to: after receiving the Invite message sent by the user terminal, initiate a GRE tunnel registration request to the PDSN, requesting the PDSN to establish a GRE tunnel;
  • the PDSN is further configured to return a GRE tunnel registration response to the WAG server after the GRE tunnel is established;
  • the WAG server is further configured to send an boost to the PBG after receiving the GRE tunnel registration response. 7 channel request;
  • the WAG server is further configured to: after receiving the service termination request message sent by the terminal, obtain the bearer channel ID of the current PBG from the service termination request, and send a request to delete the bearer channel to the PBG.
  • the WAG server is further configured to: after the PBG returns an increased bearer channel response carrying the bearer channel ID allocated by the PBG to the terminal, return the private header domain information carrying the PDSN and the private header field of the PBG to the terminal.
  • the Invite success message of the information is further configured to establish a route from the terminal to the PBG locally after receiving the Invite success message.
  • the private header domain information of the PBG includes at least the following information:
  • channel ID of the PBG IP address, port number, and 7
  • IP address, port number, and stream ID of the PDSN IP address, port number, and stream ID of the PDSN
  • the request to increase the bearer channel includes at least the following information:
  • WIFI IP and port PDSN IP and port
  • the GRE tunnel registration response message carries the private header domain information of the PDSN.
  • the user terminal automatically initiates a unified authentication and authentication before receiving the Invite message sent by the user terminal, and sends an Invite message to the WAG server after the authentication succeeds.
  • the user terminal performs bearer data transmission by using the PBG and the PDSN after the user terminal establishes the route of the user terminal to the PBG and the PBG establishes a PBG to the PDSN.
  • FIG. 5 is a schematic diagram of an authentication process according to an embodiment of the present invention. As shown in FIG. 5, the process includes the following steps:
  • Step 501 The terminal initiates a SIP (Signal) request message to the WAG server.
  • the WIFI switch on the terminal is turned on, scanning the open hotspots around, and automatically connecting to the hotspot with higher priority, and then automatically sending a Register request message to the WAG server through the WIFI link.
  • the terminal scans to three open hotspots, according to the order of priority: ChinaNet_HomeCW, ChinaNet_CW, ChinaNet, then the terminal will automatically connect to the highest priority ChinaNet_HomeCW hotspot.
  • the register request message of the SIP signaling carries the type of the authentication algorithm supported by the user identity card of the terminal.
  • the authentication algorithm may be a Cellular Authentication and Voice Encryption Algorithm (CAVE) or a Message Digest Algorithm 5 (MD5).
  • Step 502 After receiving the Register request message sent by the terminal, the WAG server selects an algorithm carried in the Register request message, and then returns an Unauthorized challenge message to the terminal.
  • the Unauthorized challenge message carries an authentication random number corresponding to the WAG selected authentication algorithm.
  • Step 503 After receiving the Unauthorized challenge message, the terminal parses the authentication random number from the Unauthorized challenge message, and calculates the authentication data according to the agreed authentication algorithm by the user identity card of the terminal. After the authentication data is calculated, the Register request message is re-initiated to the WAG server.
  • the Register Request message initiated to the WAG server carries both the authentication random number and the calculated authentication data.
  • Step 504 to step 505 After receiving the Register request message re-initiated by the terminal, the WAG server parses out the authentication random number and the authentication data, and sends the authentication random number, the authentication data, and the authentication algorithm. Go to the AN-AAA server for authentication.
  • Step 506 After receiving the authentication data sent by the WAG server, the AN-AAA server calculates the authentication data according to the authentication algorithm according to the authentication random number.
  • the authentication success message is returned to the WAG server, indicating that the authentication succeeds; if not, the authentication failure message is returned.
  • Step 507 to step 508 After receiving the authentication response message sent by the AN-AAA server, the WAG server returns the authentication response message to the terminal.
  • the terminal after receiving the authentication response message, the terminal presents the authentication result to the user in the form of a dialog box or a voice.
  • the terminal receives the authentication success response message, that is, after the authentication succeeds, the PPP dialing process flow as shown in FIG. 6 can be performed.
  • FIG. 6 is a schematic flowchart of PPP dialing processing after successful authentication according to an embodiment of the present invention. As shown in FIG. 6, the process includes the following steps:
  • Step 601 The terminal initiates an Invite message to the WAG server.
  • Step 602 to step 603 After receiving the Invite message sent by the terminal, the WAG server returns a tring response message to the terminal, and initiates a GRE tunnel registration request (Register Req) message to the PDSN to request the PDSN to establish a GRE tunnel of the A10 interface.
  • the WAG server After receiving the Invite message sent by the terminal, the WAG server returns a tring response message to the terminal, and initiates a GRE tunnel registration request (Register Req) message to the PDSN to request the PDSN to establish a GRE tunnel of the A10 interface.
  • a GRE tunnel registration request (Register Req) message
  • Step 604 After successfully establishing the GRE tunnel of the A10 interface, the PDSN returns a GRE tunnel registration reply (Register Reply) message to the WAG server.
  • GRE tunnel registration reply (Register Reply)
  • Step 605 After receiving the Register Reply message sent by the PDSN, the WAG server sends a Tunnel Establish Req message to the PBG.
  • the bearer channel setup request message carries the IP address and port information of the WIFI, the IP address and port information of the PDSN.
  • Step 606 to Step 607 After receiving the bearer channel setup request message sent by the WAG server, the PBG performs the following operations:
  • the tunnel Establish Reply message carries the channel ID information.
  • Step 608 After receiving the bearer channel setup response message sent by the PBG, the WAG server returns an invite success message to the terminal.
  • the message carries the GRE tunnel parameter allocated by the PDSN for the terminal: IP + Port
  • Step 609 to Step 610 After receiving the invite success response message returned by the WAG server, the terminal performs the following operations:
  • the parameters configured by the terminal for the PPP dialup process include: the IP and port number of the PBG, And the flow identification of the PDSN.
  • Step 611 After receiving the PPP dialing negotiation request sent by the terminal, the PBG finds the corresponding channel according to the IP address and the port number, and forwards the PPP dialing negotiation request message to the PDSN.
  • Step 612 to step 613 The PDSN returns a PPP dial-up negotiation response to the terminal through the PBG,
  • the identity security authentication may be performed by using a Challenge Handshake Authentication Protocol (CHP).
  • CHP Challenge Handshake Authentication Protocol
  • the CHAP is a 3-way handshake authentication protocol in the prior art, and does not directly transmit the user's plaintext password, and provides a secure identity verification by using the MD5 and the corresponding mechanism of the challenge.
  • the terminal After the PPP channel is successfully established, the terminal performs data services through the established PPP channel.
  • FIG. 7 is a schematic diagram of a process for disconnecting a PPP dialing process according to an embodiment of the present invention. As shown in FIG. 7, the process includes the following steps:
  • Step 701 The terminal initiates a Terminate Req message to the PBG.
  • the terminal closes the data switch and sends a Terminate Req request to the PBG.
  • Step 702 The PBG forwards the termination request message sent by the terminal to the PDSN.
  • Step 703 to step 704 After receiving the termination request message, the PDSN releases the Stream ID allocated to the terminal locally, and returns a Terminate Ack message to the terminal through the PBG. Steps 705 to 706: After the terminal waits for the set duration Terminating the connection; then initiating a Downe Req message to the WAG server;
  • the set duration may be set according to actual conditions, for example, may be set to 2s.
  • the Bye Req message carries an X-CT-Tunnel and a Pbg-timnel.
  • Step 707 After receiving the Bye Req message sent by the terminal, the WAG server initiates a GRE tunnel registration request (Unregister Req) message to the PDSN.
  • GRE tunnel registration request Unregister Req
  • Step 708 After receiving the removal registration request message, the PDSN returns a GRE tunnel registration response (Unregister Reply) message to the WAG.
  • GRE tunnel registration response Unregister Reply
  • Step 709 After receiving the Unregister Reply message sent by the PDSN, the WAG server initiates a Tunnel Del Req message to the PBG.
  • the Tunnel Del Req message carries the channel ID assigned by the PDSN to the terminal.
  • the channel ID that is, the tunnel ID.
  • Step 710 After receiving the bearer channel deletion request message sent by the WAG server, the PBG deletes the established channel according to the channel ID carried in the request message, and then returns a Tunnel Del Reply message to the WAG server.
  • Step 712 After receiving the Tunnel Del Reply message sent by the PBG, the WAG server returns a downlink success response message to the terminal.
  • the terminal may be a terminal, or a tablet computer, or a terminal such as a smart TV.
  • the invention can process the bearer plane data by adding PBG, which not only can reduce the load of the WAG server, but also can effectively improve the capacity and performance of the WAG server, and can also greatly improve the stability of the C+W service.
  • the WAG server when receiving the service request sent by the user terminal, the WAG server selects a PBG that carries the bearer plane data of the service for the user terminal, and notifies the PBG to establish a route between the PBG and the PDSN. Transmitting plane data of the service related to the user terminal by using a route between the PBG and the PDSN. So, not only has it been reduced
  • the load of the WAG server effectively improves the capacity and performance of the WAG server, and also improves the stability of the C+W service.

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Abstract

本发明公开了一种实现控制和承载分离的方法,所述方法应用于接入网系统,所述接入网系统包括无线接入网关WAG服务器、分组业务数据节点PDSN和一个以上点对点协议数据承载网关PBG;其中,所述方法包括:WAG服务器接收到用户终端发送的业务请求时,为用户终端选择承载所述业务的承载面数据的PBG;通知所述PBG建立所述PBG到所述PDSN之间的路由;通过所述PBG到所述PDSN之间的路由传输与所述用户终端相关的所述业务的承载面数据。本发明还同时公开了一种实现控制和承载分离的接入网系统。

Description

一种实现控制与承载分离的方法及接入网系统 技术领域
本发明涉及通信技术, 尤其涉及一种实现控制与承载分离的方法及接 入网系统。 背景技术
目前, 中国电信无线宽带业务整合, 即称码分多址 (Code Division Multiple Access, CDMA ) +第三代移动通信技术 ( 3G, the 3rd Generation ) 网络 +无线局域网络( WLAN, Wireless Local Area Networks ) ,简称 "C+W" 网络, 是中国电信从固网运营商向全业务运营商转型的重点产品。 开通中 国电信 C+W 业务的用户在电信信号覆盖面下可自如选择利用哪种网络上 网。
图 1为现有的 C+W网络架构示意图, 终端在接入网络前, 需经无线接 入网关( WAG, Wireless Access Gateway )服务器认证; 接入网络后, 进行 数据业务传输时,也要通过 WAG服务器转发来自网络侧的分组业务数据节 点( PDSN, Package Data Service Node )的数据。 也就是说, WAG服务器既 要处理控制面数据, 也要处理承载面数据。
而在中国电信的 C+W网络中, WAG服务器属于稀有资源, 每个省的 WAG服务器只有一个或两个; 并且, 当有两个 WAG服务器时, 分为主用 服务器和备用服务器, 实际工作时, 只有主用 WAG服务器工作, 只有在主 用 WAG服务器死机时, 备用 WAG服务器才会工作。
因此, 在用户的 C+W业务量大时, 势必会给 WAG服务器带来沉重的 负荷, 在超负荷工作时, WAG服务器就可能面临死机的危险。 发明内容
有鉴于此, 本发明实施例的主要目的在于提供一种实现控制与承载分 离的方法及接入网系统, 能降低 WAG服务器的负荷, 提升 C+W业务的稳 定性。
为达到上述目的, 本发明实施例的技术方案是这样实现的:
本发明实施例提供了一种实现控制与承载分离的方法, 所述方法应用 于接入网系统, 所述接入网系统包括无线接入网关 WAG服务器、分组业务 数据节点 PDSN和一个以上点对点协议数据承载网关 PBG; 所述方法还包 括:
所述 WAG服务器接收到用户终端发送的业务请求时,为所述用户终端 选择承载所述业务的承载面数据的 PBG;
通知所述 PBG建立所述 PBG到所述 PDSN之间的路由;
通过所述 PBG到所述 PDSN之间的路由传输与所述用户终端相关的所 述业务的承载面数据。
优选地, 所述方法还包括:
所述 WAG服务器将所述 PBG的信息通知用户终端;
由所述用户终端建立所述用户终端到所述 PBG之间的路由; 通过所述用户终端到所述 PBG之间的路由传输与所述用户终端相关的 所述业务的承载面数据。
优选地, 所述方法还包括:
所述 WAG服务器接收到用户终端发送的业务终止请求时, 通知所述 PBG释放所述 PBG到所述 PDSN之间的路由。
优选地, 所述方法还包括:
所述用户终端发送业务终止请求时, 释放所述用户终端到所述 PBG之 间的路由。 优选地, 所述通知所述 PBG建立所述 PBG到所述 PDSN之间的路由, 包括:
所述 WAG服务器向所述 PDSN发送增加承载通道请求;
所述 PBG根据所述增加承载通道请求中携带的 PDSN为所述用户终端 分配的互联网协议 IP地址信息和端口信息建立 PBG到 PDSN的路由,并向
WAG服务器返回携带有 PBG为所述用户终端分配的承载通道身份识别码
ID的增力 07|载通道响应。
优选地, 所述通知所述 PBG释放所述 PBG到所述 PDSN之间的路由, 包括:
所述 WAG服务器向所述 PDSN发送删除承载通道请求;
所述 PBG根据所述删除承载通道请求中携带的承载通道 ID删除 PBG 到 PDSN的路由, 并向 WAG服务器返回删除承载通道响应。
本发明实施例还提供了一种实现控制与承载分离的接入网系统, 所述 接入网系统包括: 无线接入网关 WAG服务器、分组业务数据节点 PDSN和 一个以上点对点协议数据承载网关 PBG; 其中,
所述 WAG服务器, 配置为接收到用户终端发送的业务请求时, 为所述 用户终端选择承载所述业务的承载面数据的 PBG;通知所述 PBG建立所述 PBG到所述 PDSN之间的路由;
所述 PBG, 配置为建立所述 PBG到所述 PDSN之间的路由, 通过所述 PBG到所述 PDSN之间的路由传输与所述用户终端相关的所述业务的承载 面数据。
优选地, 所述 WAG服务器还配置为, 将所述 PBG的信息通知用户终 端, 以由所述用户终端建立所述用户终端到所述 PBG之间的路由。
优选地, 所述 WAG服务器还配置为,接收到用户终端发送的业务终止 请求时, 通知所述 PBG释放所述 PBG到所述 PDSN之间的路由。 优选地,所述 WAG服务器,还配置为向所述 PDSN发送增加承载通道 请求;
所述 PBG还配置为, 根据所述增加承载通道请求中携带的 PDSN为所 述用户终端分配的互联网协议 IP地址信息和端口信息建立 PBG到 PDSN 的路由, 并向 WAG服务器返回携带有 PBG为所述用户终端分配的承载通 道身份识别码 ID的增加承载通道响应;
优选地,所述 WAG服务器,还配置为向所述 PDSN发送删除承载通道 请求;
所述 PBG, 还配置为根据所述删除承载通道请求中携带的承载通道 ID 删除 PBG到 PDSN的路由, 并向 WAG服务器返回删除承载通道响应。
本发明实施例所提供的实现控制与承载分离的方法及接入网系统, WAG服务器将控制面数据与承载面数据分离, 点对点协议数据承载网关 ( PBG , Point to Point Protocol Bearing Gateway )根据 WAG月良务器发送的增 加承载通道请求建立 PBG到 PDSN的路由, 在用户终端到 PBG的路由、 PBG到 PDSN的路由均建立完成后,用户终端通过所述 PBG与 PDSN进行 承载数据传输。 如此, 通过增加 PBG来处理承载面数据, 降低了 WAG服 务器的负荷, 有效地提升了 WAG服务器的容量和性能, 由于 WAG服务器 只需负责处理终端接入 C+W网络时的控制面数据,因此,不但增加了 WAG 的处理能力, 也提升了 C+W业务的稳定性。 此外, 所述 PBG的数量可根 据业务需要进行扩充。 附图说明
图 1为现有的 C+W网络架构示意图;
图 2为本发明实施例实现控制与承载分离方法的实现流程示意图; 图 3 为本发明实施例实现控制与承载分离的接入网系统的组成结构示 意图; 图 4为本发明实施例实现控制与承载分离的接入网系统的架构示意图; 图 5为本发明实施例鉴权流程示意图;
图 6为本发明实施例鉴权成功后 PPP拨号处理的流程示意图; 图 7为本发明实施例断开 PPP拨号处理流程示意图。 具体实施方式
下面结合附图及具体实施例对本发明作进一步详细的说明。
本发明实施例中, 为实现 C+W网络中控制与承载的分离, 用户终端、 WAG服务器和 PBG分别需支持下述条件:
1、 用户终端支持下述条件:
( 1 )增加 /删除本地到 PBG的路由;
( 2 )解析来自 WAG服务器的邀请 ( Invite )成功响应( 200 OK )消息 中的私有头域; 所述消息表示为:
Pbg-Tunnel : IP4 ; IPaddr=XXX. XXX. XXX. XXX ; Port=XXX ; tunnelID-id=XXX0
2、 WAG服务器支持下述条件:
( 1 ) 向 PBG发送增加 /删除承载通道请求;
( 2 ) 向用户终端发送 Invite 200 OK消息, 在所述 Invite 200 OK消息 中添加 PBG的私有头域信息;
具体地, 所述 WAG服务器将从 PBG申请的 IP地址、 端口 (Port ) 号 和承载通道 ID等参数封装成私有头域,增加到 Invite 200 OK消息中,所述 Invite 200 OK消息的格式如下:
Pbg-Tunnel: IP4; IPaddr=XXX.XXX.XXX.XXX; Port=XXX;
tunnelID-id=XXX0
( 3 )接收用户终端发送的下线 (Bye )请求消息, 从所述下线请求消 息中获取当前 PBG的承载通道 ID; ( 4 )携带 TunnellD向 PBG发送删除承载通道请求。
3、 PBG支持处理:
( 1 )接收来自 WAG服务器的增加承载通道请求, 按照所述增加承载 通道请求中携带的 PDSN为所述用户终端分配的互联网协议 IP地址信息和 端口信息建立 PBG到 PDSN的路由该请求; 并向 WAG服务器返回携带有 PBG为所述用户终端分配的承载通道身份识别码(ID, IDentity )的增加承 载通道响应;
( 2 )接收来自 WAG服务器的删除承载通道请求, 根据所述删除承载 通道请求中携带的承载通道 ID删除 PBG到 PDSN的路由,并向 WAG服务 器返回删除承载通道响应。
下面, 结合具体实施例对本发明作进一步阐述。
图 2 为本发明实施例实现控制与承载分离方法的实现流程示意图, 所 述方法应用于接入网系统, 所述接入网系统包括 WAG服务器、 PDSN和一 个以上 PBG; 如图 2所示, 本实施例实现控制与承载分离方法包括以下步 骤:
步骤 201 : 所述 WAG服务器接收到用户终端发送的业务请求时, 为所 述用户终端选择承载所述业务的承载面数据的 PBG;
步骤 202: 通知所述 PBG建立所述 PBG到所述 PDSN之间的路由; 通 过所述 PBG到所述 PDSN之间的路由传输与所述用户终端相关的所述业务 的承载面数据。
优选地, 所述方法还包括:
所述 WAG服务器将所述 PBG的信息通知用户终端;
由所述用户终端建立所述用户终端到所述 PBG之间的路由; 通过所述用户终端到所述 PBG之间的路由传输与所述用户终端相关的 所述业务的承载面数据。 优选地, 所述方法还包括:
所述 WAG服务器接收到用户终端发送的业务终止请求时, 通知所述 PBG释放所述 PBG到所述 PDSN之间的路由。
优选地, 所述方法还包括:
所述用户终端发送业务终止请求时, 释放所述用户终端到所述 PBG之 间的路由。
这里, 所述业务终止请求通常指 Bye请求。
具体地, 所述通知所述 PBG建立所述 PBG到所述 PDSN之间的路由, 包括:
所述 WAG服务器向所述 PDSN发送增加承载通道请求;
所述 PBG根据所述增加承载通道请求中携带的 PDSN为所述用户终端 分配的 IP地址信息和端口信息建立 PBG到 PDSN的路由,并向 WAG服务 器返回携带有 PBG为所述终端分配的承载通道 ID的增加承载通道响应。
优选地,所述 PBG接收到 WAG服务器发送的增加承载通道请求之前, 所述方法还包括:
WAG服务器接收到用户终端发送的 Invite消息后, 向 PDSN发起通用 路由封装 ( GRE, Generic Routing Encapsulation )隧道注册请求,请求 PDSN 建立 GRE隧道;
PDSN完成 GRE隧道建立后,向 WAG服务器返回 GRE隧道注册响应; WAG服务器接收到所述 GRE隧道注册响应后, 向 PBG发送增加承载 通道请求;
所述 PBG接收到 WAG服务器发送的删除承载通道请求之前, 所述方 法还包括:
WAG服务器接收到用户终端发送的业务终止请求消息后, 从所述业务 终止请求消息中获取当前 PBG的承载通道 ID, 向 PBG发送删除承载通道 请求。
优选地,所述 PBG向 WAG服务器返回携带有 PBG为所述用户终端分 配的承载通道 ID的增加承载通道响应之后, 所述方法还包括:
WAG服务器向用户终端返回携带有 PBG的私有头域信息的 Invite成功 消息;
所述终端接收到所述 Invite成功消息后, 在本地建立终端到 PBG的路 由。
优选地, 所述 PBG的私有头域信息, 至少包括以下信息:
PBG的 IP地址、 端口号、 以及 7|载通道 ID;
所述 PDSN的私有头域信息至少包括以下信息:
PDSN的 IP地址、 端口号、 以及流标识;
所述增加承载通道请求至少包括以下信息:
WIFI的 IP和端口号、 PDSN的 IP和端口;
所述 GRE隧道注册响应消息中携带有 PDSN的私有头域信息。
优选地, 所述 WAG服务器接收到用户终端发送的 Invite消息之前, 所 述方法还包括:
用户终端自动发起统一认证鉴权,在鉴权成功后, 向 WAG服务器发送 Invite消息。
具体地, 所述通知所述 PBG释放所述 PBG到所述 PDSN之间的路由, 包括:
所述 WAG服务器向所述 PDSN发送删除承载通道请求;
所述 PBG根据所述删除承载通道请求中携带的承载通道 ID删除 PBG 到 PDSN的路由, 并向 WAG服务器返回删除承载通道响应。
图 3 为本发明实施例实现控制与承载分离的接入网系统的组成结构示 意图, 如图 3所示, 所述接入网系统包括: WAG服务器、 PDSN和一个以 上 PBG; 其中,
所述 WAG服务器, 配置为接收到用户终端发送的业务请求时, 为所述 用户终端选择承载所述业务的承载面数据的 PBG;通知所述 PBG建立所述 PBG到所述 PDSN之间的路由;
所述 PBG, 配置为建立所述 PBG到所述 PDSN之间的路由, 通过所述 PBG到所述 PDSN之间的路由传输与所述用户终端相关的所述业务的承载 面数据。
优选地, 所述 WAG服务器还配置为, 将所述 PBG的信息通知用户终 端, 以由所述用户终端建立所述用户终端到所述 PBG之间的路由。
优选地, 所述 WAG服务器还配置为,接收到用户终端发送的业务终止 请求时, 通知所述 PBG释放所述 PBG到所述 PDSN之间的路由。
优选地,所述 WAG服务器,还配置为向所述 PDSN发送增加承载通道 请求;
所述 PBG还配置为, 根据所述增加承载通道请求中携带的 PDSN为所 述用户终端分配的互联网协议 IP地址信息和端口信息建立 PBG到 PDSN 的路由, 并向 WAG服务器返回携带有 PBG为所述终端分配的承载通道 ID 的增力口 载通道响应;
优选地,所述 WAG服务器,还配置为向所述 PDSN发送删除承载通道 请求;
所述 PBG, 还配置为根据所述删除承载通道请求中携带的承载通道 ID 删除 PBG到 PDSN的路由, 并向 WAG服务器返回删除承载通道响应。
图 4为本发明实施例实现控制与承载分离的接入网系统架构示意图, 如图 4所示,所述接入网系统架构中包括:用户终端、接入节点( AP, Access Point )、接入网鉴权、授权与计帳( AN- AAA, Access Network- Authentication , Accounting, Authorization )服务器、分组业务数据节点( PDSN, Package Data Service Node ); 其中:
接入节点, 配置为为用户终端提供 WIFI无线链路;
这里, 所述接入节点保证用户终端能够接入到网络侧。
AN-AAA服务器, 配置为为 WAG服务器提供鉴权数据、 认证数据, 并对接入用户进行计费。
PDSN,配置为建立用户终端点对点协议( PPP , Point to Point Protocol ) 链路, 传输终端业务流到业务网络的路由, 对终端业务流进行计费等。
上述接入节点、 AN-AAA服务器、 PDSN与现有技术中 C+W网络中接 入网系统的功能相同。
为实现 C+W网络中控制与承载的分离,在本发明实现控制与承载分离 的接入网系统架构中, 所述接入网系统架构中还包括: WAG服务器和一个 以上 PBG; 其中,
所述 WAG服务器, 配置为将控制面数据与承载面数据分离; 还配置为 向 PBG发送增加或删除承载通道请求;
所述 PBG, 配置为根据所述 WAG服务器发送的增加 /删除承载通道请 求建立 /释放 PBG到 PDSN的路由。
也就是说, 所述 WAG服务器, 配置为处理终端接入移动核心网时的信 令转换、 业务区分与汇聚、 业务流路由传输等, 对移动核心网屏蔽宽带网 络。 所述 PBG, 配置为承载从 WAG服务器上分离出来的 PPP业务数据。
优选地, 所述系统还包括: 局域网交换机( LANS, Local Areal network Switch ), 配置为汇聚各 PBG的路由、 还配置为转发 IP报文。
优选地, 所述 PBG, 还配置为:
接收到 WAG服务器发送的增加承载通道请求后,根据所述增加承载通 道请求中携带的 PDSN为所述用户终端分配的 IP地址信息和端口信息建立 PBG到 PDSN的路由, 并向 WAG服务器返回携带有 PBG为所述用户终端 分配的 7|载通道 ID的增加 7|载通道响应;
接收到 WAG服务器发送的删除承载通道请求后,根据所述删除承载通 道请求中携带的承载通道 ID删除 PBG到 PDSN的路由,并向 WAG服务器 返回删除承载通道响应。
优选地, WAG服务器还配置为,接收到用户终端发送的 Invite消息后, 向 PDSN发起 GRE隧道注册请求, 请求 PDSN建立 GRE隧道;
相应的, PDSN还配置为, 完成 GRE隧道建立后, 向 WAG服务器返 回 GRE隧道注册响应;
WAG服务器还配置为, 接收到所述 GRE隧道注册响应后, 向 PBG发 送增力。7 载通道请求;
WAG服务器, 还配置为接收到终端发送的业务终止请求消息后, 从所 述业务终止请求消获取当前 PBG的承载通道 ID, 向 PBG发送删除承载通 道请求。
WAG服务器, 还配置为在所述 PBG向 WAG服务器返回携带有 PBG 为所述终端分配的承载通道 ID的增加承载通道响应之后, 向终端返回携带 有 PDSN的私有头域信息以及 PBG的私有头域信息的 Invite成功消息; 所述终端还配置为,接收到所述 Invite成功消息后,在本地建立终端到 PBG的路由。
优选地, 所述 PBG的私有头域信息, 至少包括以下信息:
PBG的 IP地址、 端口号、 以及 7|载通道 ID;
所述 PDSN的私有头域信息至少包括以下信息:
PDSN的 IP地址、 端口号、 以及流标识 ( Stream ID );
所述增加承载通道请求至少包括以下信息:
WIFI的 IP和端口、 PDSN的 IP和端口;
所述 GRE隧道注册响应消息中携带有 PDSN的私有头域信息。 优选地, 所述用户终端, 在所述 WAG服务器接收到用户终端发送的 Invite消息之前, 自动发起统一认证鉴权, 在鉴权成功后, 向 WAG服务器 发送 Invite消息。
优选地, 所述用户终端, 在所述用户终端建立所述用户终端到 PBG的 路由、 所述 PBG建立 PBG到 PDSN的路由之后, 通过所述 PBG与 PDSN 进行承载数据传输。
图 5为本发明实施例鉴权流程示意图, 如图 5所示, 该流程包括以下 步骤:
步骤 501 : 终端向 WAG服务器发起 SIP信令的注册( Register )请求消 息。
具体的, 终端上的 WIFI开关打开, 扫描周围的开放热点, 并自动连接 到优先级较高的热点,随后自动通过 WIFI链路向 WAG服务器发起 Register 请求消息。
这里, 假设终端扫描到三个开放热点, 按照优先级由高到底依次为: ChinaNet_HomeCW、 ChinaNet_CW、 ChinaNet, 那么, 终端将自动连接优 先级最高的 ChinaNet_HomeCW热点。
这里,所述 SIP信令的 Register请求消息中携带有终端的用户身份识别 卡所支持的鉴权算法类型。 比如, 所述鉴权算法可以为蜂窝认证和语音加 密算法 ( CAVE, Cellular Authentication and Voice Encryption algorithm )、 或 者消息摘要算法 5 ( MD5, Message Digest Algorithm 5 )。
步骤 502: WAG服务器接收到终端发送的 Register请求消息后, 选择 该 Register 请求消息中携带的一种算法, 然后向终端返回越权 ( Unauthorized )质询消息。
这里,该 Unauthorized质询消息中携带有 WAG所选鉴权算法对应的鉴 权随机数。 步骤 503: 终端接收到该 Unauthorized质询消息后, 从该 Unauthorized 质询消息中解析出鉴权随机数, 并由终端的用户身份标识卡按照约定的鉴 权算法计算鉴权数据。计算出鉴权数据后,重新向 WAG服务器发起 Register 请求消息。
这里, 重新向 WAG服务器发起的 Register请求消息中同时携带有鉴权 随机数和计算得到的鉴权数据。
步骤 504〜步骤 505: WAG服务器在接收到终端重新发起的 Register请 求消息后, 解析出其中的鉴权随机数和鉴权数据, 并将所述鉴权随机数、 鉴权数据以及鉴权算法发送到 AN-AAA服务器进行鉴权。
步骤 506: AN- AAA服务器接收到 WAG服务器发送的鉴权数据后, 在 本地根据鉴权随机数按照鉴权算法计算鉴权数据。
具体地, 如果 AN-AAA服务器本地计算的鉴权数据和终端计算的鉴权 数据一致, 则向 WAG服务器返回鉴权成功消息, 指示鉴权成功; 如果不一 致, 则返回鉴权失败消息。
步骤 507〜步骤 508: WAG服务器接收到 AN-AAA服务器发送的鉴权 响应消息后, 向终端返回所述鉴权响应消息。
这里, 终端接收到鉴权响应消息后, 以对话框或语音等形式向用户提 示鉴权结果。
这里, 当终端接收到鉴权成功响应消息后, 即鉴权成功后, 可进行如 图 6所示的 PPP拨号处理流程。
图 6为本发明实施例鉴权成功后 PPP拨号处理的流程示意图, 如图 6 所示, 该流程包括以下步骤:
步骤 601: 终端向 WAG服务器发起邀请 ( Invite ) 消息。
在鉴权成功后,用户可通过触发客户端或者打开数据开关来向 WAG服 务器发起 invite消息。 步骤 602〜步骤 603: WAG服务器接收到终端发送的 Invite消息后, 向 终端返回尝试( tring )响应消息,并向 PDSN发起 GRE隧道注册请求( Register Req ) 消息, 以请求 PDSN建立 A10接口的 GRE隧道。
步骤 604: PDSN在建立 A10接口的 GRE隧道成功后, 向 WAG服务 器返回 GRE隧道注册应答( Register Reply ) 消息。
步骤 605: WAG服务器接收到 PDSN发送的 Register Reply消息后, 向 PBG发送承载通道建立请求( Tunnel Establish Req ) 消息。
这里, 所述承载通道建立请求消息中携带有 WIFI 的 IP 地址和端口 ( Port )信息、 PDSN的 IP地址和端口信息。
步骤 606〜步骤 607: PBG接收到 WAG服务器发送的承载通道建立请 求消息后, 将执行下述操作:
( 1 )利用 PDSN的 IP和端口在本地建立 PBG到 PDSN的路由;
( 2 ) 向 WAG服务器返回承载通道建立响应 ( Tunnel Establish Reply ) 消息。
其中, 所述 Tunnel Establish Reply消息中携带有通道 ID信息。
步骤 608: WAG服务器接收到 PBG发送的承载通道建立响应消息后, 向终端返回 invite成功消息。
这里,在该消息中携带有 PDSN为终端分配的 GRE隧道参数: IP + Port
+ Stream ID。
步骤 609〜步骤 610: 终端接收到 WAG服务器返回的 invite成功响应消 息后, 将执行下述操作:
( 1 )利用 PBG分配的通道的 IP和端口号在路由表中增加 UE到 PBG 的路由;
( 2 )启动 PPP拨号进程,向 PBG发起 PPP拨号协商请求消息。
这里, 终端为 PPP拨号进程配置的参数包括: PBG的 IP和端口号、 以 及 PDSN的流标识。
步骤 611 : PBG接收到终端发送的 PPP拨号协商请求后,根据 IP地址、 端口号找到对应的通道, 并把 PPP拨号协商请求消息转发到 PDSN;
步骤 612〜步骤 613 : PDSN通过 PBG向终端返回 PPP拨号协商应答消 自、
这里, 在 PDSN向终端返回 PPP拨号协商应答消息后, 可通过质询握 手身份验证协议 ( CHAP, Challenge Handshake Authentication Protocol )进 行身份安全认证。
其中, 所述 CHAP是现有技术中的一种 3次握手认证协议, 并不直接 传送用户明文密码,通过使用 MD5和质询相应机制提供一种安全身份验证。
PPP通道建立成功后, 终端通过建立的 PPP通道进行数据业务。
图 7为本发明实施例断开 PPP拨号处理流程示意图, 如图 7所示, 该 流程包括以下步骤:
步骤 701: 终端向 PBG发起终止请求 ( Terminate Req ) 消息; 这里, 当终端不再进行业务数据传输时, 会关闭数据开关, 向 PBG发 起 Terminate Req请求。
步骤 702: PBG向 PDSN转发终端发送的终止请求消息;
步骤 703〜步骤 704: PDSN接收到终止请求消息后,释放本地为终端分 配的 Stream ID, 并通过 PBG向终端返回终止确认 ( Terminate Ack ) 消息; 步骤 705〜步骤 706: 终端在等待设定时长后, 终止连接; 然后向 WAG 服务器发起下线请求( Bye Req ) 消息;
这里, 所述设定时长可根据实际情况进行设定, 比如可设为 2s。
这里, 所述 Bye Req消息中携带有 X-CT-Tunnel和 Pbg-timnel。
这里, 所述 X-CT-Tunnel表示 PDSN的私有域头信息; 所述 Pbg-tunnel 表示 PBG的私有域头信息 。 步骤 707: WAG服务器接收到终端发送的 Bye Req消息后, 向 PDSN 发起移除 GRE隧道注册请求( Unregister Req ) 消息;
步骤 708: PDSN接收移除注册请求消息后, 向 WAG返回移除 GRE 隧道注册应答 ( Unregister Reply ) 消息;
步骤 709: WAG服务器接收到 PDSN发送的 Unregister Reply消息后, 向 PBG发起承载通道删除请求( Tunnel Del Req ) 消息;
这里,所述 Tunnel Del Req消息中携带有 PDSN为终端分配的通道 ID。 这里, 所述通道 ID, 也即 Tunnel ID。
步骤 710〜步骤 711 : PBG接收到 WAG服务器发送的承载通道删除请 求消息后,根据该请求消息中携带的通道 ID删除建立的通道,然后向 WAG 服务器返回承载通道删除应答(Tunnel Del Reply ) 消息。
步骤 712: WAG服务器接收到 PBG发送的 Tunnel Del Reply消息后, 向终端返回下线成功响应消息。
本发明中, 所述终端可为终端、 或为平板电脑、 或为智能电视等终端。 本发明可通过增加 PBG来处理承载面数据, 不仅能够降低 WAG服务 器的负荷, 而且能够有效地提升 WAG服务器的容量和性能, 同时也能够极 大地提升 C+W业务的稳定性。
以上所述, 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范围之内所作的任何修改、 等同替换和改进 等, 均包含在本发明的保护范围之内。 工业实用性
本发明实施例中, WAG服务器接收到用户终端发送的业务请求时, 为用户终端选择承载所述业务的承载面数据的 PBG;通知所述 PBG建立所 述 PBG到所述 PDSN之间的路由; 通过所述 PBG到所述 PDSN之间的路 由传输与所述用户终端相关的所述业务的承载面数据。 如此, 不仅降低了 WAG服务器的负荷, 有效地提升了 WAG服务器的容量和性能, 同时也提 了升 C+W业务的稳定性。

Claims

权利要求书
1、 一种实现控制与承载分离的方法, 所述方法应用于接入网系统, 所 述接入网系统包括无线接入网关 WAG服务器、分组业务数据节点 PDSN和 一个以上点对点协议数据承载网关 PBG; 所述方法还包括:
所述 WAG服务器接收到用户终端发送的业务请求时,为所述用户终端 选择承载所述业务的承载面数据的 PBG;
通知所述 PBG建立所述 PBG到所述 PDSN之间的路由;
通过所述 PBG到所述 PDSN之间的路由传输与所述用户终端相关的所 述业务的承载面数据。
2、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
所述 WAG服务器将所述 PBG的信息通知用户终端;
由所述用户终端建立所述用户终端到所述 PBG之间的路由; 通过所述用户终端到所述 PBG之间的路由传输与所述用户终端相关的 所述业务的承载面数据。
3、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
所述 WAG服务器接收到用户终端发送的业务终止请求时, 通知所述 PBG释放所述 PBG到所述 PDSN之间的路由。
4、 根据权利要求 2所述的方法, 其中, 所述方法还包括:
所述用户终端发送业务终止请求时, 释放所述用户终端到所述 PBG之 间的路由。
5、 根据权利要求 1所述的方法, 其中, 所述通知所述 PBG建立所述 PBG到所述 PDSN之间的路由, 包括:
所述 WAG服务器向所述 PDSN发送增加承载通道请求;
所述 PBG根据所述增加承载通道请求中携带的 PDSN为所述用户终端 分配的互联网协议 IP地址信息和端口信息建立 PBG到 PDSN的路由,并向 WAG服务器返回携带有 PBG为所述用户终端分配的承载通道身份识别码 ID的增力 07|载通道响应。
6、 根据权利要求 3所述的方法, 其中, 所述通知所述 PBG释放所述 PBG到所述 PDSN之间的路由, 包括:
所述 WAG服务器向所述 PDSN发送删除承载通道请求;
所述 PBG根据所述删除承载通道请求中携带的承载通道 ID删除 PBG 到 PDSN的路由, 并向 WAG服务器返回删除承载通道响应。
7、 一种实现控制与承载分离的接入网系统, 所述接入网系统包括: 无 线接入网关 WAG服务器、分组业务数据节点 PDSN和一个以上点对点协议 数据承载网关 PBG; 其中,
所述 WAG服务器, 配置为接收到用户终端发送的业务请求时, 为所述 用户终端选择承载所述业务的承载面数据的 PBG;通知所述 PBG建立所述 PBG到所述 PDSN之间的路由;
所述 PBG, 配置为建立所述 PBG到所述 PDSN之间的路由, 通过所述 PBG到所述 PDSN之间的路由传输与所述用户终端相关的所述业务的承载 面数据。
8、 根据权利要求 7所述的系统, 其中, 所述 WAG服务器还配置为, 将所述 PBG的信息通知用户终端, 以由所述用户终端建立所述用户终端到 所述 PBG之间的路由。
9、 根据权利要求 7所述的系统, 其中, 所述 WAG服务器还配置为, 接收到用户终端发送的业务终止请求时,通知所述 PBG释放所述 PBG到所 述 PDSN之间的路由。
10、 根据权利要求 7所述的系统, 其中, 所述 WAG服务器, 还配置为 向所述 PDSN发送增加承载通道请求;
所述 PBG还配置为, 根据所述增加承载通道请求中携带的 PDSN为所 述用户终端分配的互联网协议 IP地址信息和端口信息建立 PBG到 PDSN 的路由, 并向 WAG服务器返回携带有 PBG为所述用户终端分配的承载通 道身份识别码 ID的增加承载通道响应。
11、 根据权利要求 7所述的系统, 其中, 所述 WAG服务器, 还配置为 向所述 PDSN发送删除承载通道请求;
所述 PBG, 还配置为根据所述删除承载通道请求中携带的承载通道 ID 删除 PBG到 PDSN的路由, 并向 WAG服务器返回删除承载通道响应。
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