WO2011026355A1 - 节点接入家乡代理的方法、家乡代理集群系统及业务路由器 - Google Patents

节点接入家乡代理的方法、家乡代理集群系统及业务路由器 Download PDF

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Publication number
WO2011026355A1
WO2011026355A1 PCT/CN2010/073200 CN2010073200W WO2011026355A1 WO 2011026355 A1 WO2011026355 A1 WO 2011026355A1 CN 2010073200 W CN2010073200 W CN 2010073200W WO 2011026355 A1 WO2011026355 A1 WO 2011026355A1
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WIPO (PCT)
Prior art keywords
home agent
address
service
home
routing
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PCT/CN2010/073200
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English (en)
French (fr)
Inventor
金仁康
钮远
王霞
Original Assignee
中兴通讯股份有限公司
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Publication of WO2011026355A1 publication Critical patent/WO2011026355A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/12Mobility data transfer between location registers or mobility servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04Network layer protocols, e.g. mobile IP [Internet Protocol]

Definitions

  • the present invention relates to the field of communications, and more particularly to a method for a node to access a home agent, a home agent cluster system, and a service router in a mobile Internet protocol IP domain of a mobile communication system.
  • IP Mobile Internet Protocol
  • proxy mobile IP technologies are widely used in mobile communications.
  • Mobile IP technology and proxy mobile IP technology involve the following systems: mobile terminal, foreign agent, home agent, and authentication and accounting authorization system (AAA).
  • AAA authentication and accounting authorization system
  • the single-system deployment mode that is, the home agent system includes only one home agent 10, as shown in Fig. 1, in the home agent system, the mobile node 11 accesses the home network or the Internet through the foreign agent 12 and the home agent 10.
  • the single-system deployment method has a small system capacity and poor scalability, and is now rarely used in commercial offices.
  • the existing cluster system includes several single systems, and each single system publicly discloses the address and is visible to the outside.
  • the existing cluster deployment mode since the cluster presents multiple home agents externally, it is necessary to select a home agent as a centralized control point for load sharing, that is, a network element node needs to identify and allocate which users access the home agent.
  • Implement user load sharing within the cluster system There are many kinds of user allocation technologies, such as RFC4433 and 3GPP2-X.S0011-002-D.
  • the existing cluster deployment methods have some shortcomings.
  • the centralized control point selects the dynamic home agent technology and assigns the home agent to provide services to the user, the external network element is required.
  • Many old terminals on the current network cannot support the corresponding protocols, and cannot be upgraded to a version that supports the corresponding protocol.
  • deploying a cluster system requires the elimination of old equipment, which is too costly, and increases the carrier deployment cluster system. Concerns.
  • each network node is added or reduced, such as an accounting authentication authority server (AAA) and a foreign agent (FA) network.
  • AAA accounting authentication authority server
  • FA foreign agent
  • the invention provides a home agent cluster system, which can reduce the cost and reduce the difficulty of networking.
  • the present invention uses the following technical solutions:
  • a method for a node to access a home agent includes: the service router allocates a terminal address pool for each home agent in the home agent cluster system; and the service router accesses the home agent when the node accesses Determining a routing address, and determining, according to the terminal address pool, a home agent corresponding to the routing address as a service home agent;
  • the service router routes the message sent by the node to the serving home agent to complete access of the node to the serving home agent.
  • the service router parses out that the message sent by the node is mobile (Mobile) IP signaling or proxy (Mobile) mobile (Mobile) IP signaling. And the home address (Address) field in the Mobile IP signaling or the Proxy Mobile IP signaling does not include a valid address, and the service router determines the routing address of the packet according to a preset algorithm.
  • the preset algorithm is an algorithm for selecting a dynamic route of a home agent that has the lightest load according to the load of the home agent cluster system; or The algorithm for hash selection of the keyword information of the message, or a polling algorithm.
  • the node after the node accesses the service home agent, the node routes the message as follows:
  • the service router parses the packet as Mobile IP signaling or Proxy Mobile IP signaling, and the Home Address field in the Mobile IP or Proxy Mobile IP signaling includes a valid address, the service router follows the service to which the address belongs.
  • the home agent directly routes to the service home agent;
  • the service router parses the packet as a tunnel encapsulation packet, and the destination address of the packet Is the service home agent address, according to the source address of the tunnel inner layer IP to the service home agent to which the service home agent address belongs;
  • the service router parses that the source address of the packet is a service home agent address, routing to the Internet or a home network, a bearer network, or a foreign agent according to the destination address;
  • the service router parses the packet as a packet from the Internet or the home network, and the destination address of the packet is a terminal address, routing the packet to the service home agent accessed by the terminal according to the destination address.
  • the method further includes: the service router allocates a new terminal address pool for the newly added home agent; and the service router sends the newly added home agent The terminal address pool is added to the calculation result set of the preset algorithm.
  • the method further includes: the service router deleting the terminal address pool of the home agent to be deleted from the calculation result set of the preset algorithm;
  • the home agent to be deleted retains the current online session, and after the end of all the sessions, the service router deletes the terminal address pool of the home agent to be deleted; or directly ends the current online session of the home agent to be deleted. The service router deletes the terminal address pool of the home agent to be deleted.
  • the invention also discloses a home agent cluster system, comprising a plurality of home agents, further comprising a service router, the service router comprising an address management module and a routing module, wherein the address management module is set to be each of the home agent cluster systems
  • the home agent allocates a terminal address pool; the routing module is configured to determine a routing address when the node accesses the home agent, and determine, according to the terminal address pool, the home agent corresponding to the routing address as a service home agent; and send the node The message is routed to the service home agent to complete the access of the node to the service home agent.
  • the routing module is configured to parse out that the packet sent by the node is Mobile IP signaling or Proxy Mobile IP signaling, and Mobile IP signaling or Proxy Mobile If the home address field in the IP signaling does not contain a valid address, the routing address of the packet is determined according to a preset algorithm.
  • the routing module is configured to parse out that the email is Mobile IP signaling or Proxy Mobile IP signaling, and the Home Address in Mobile IP or Proxy Mobile IP signaling If the domain contains a valid address, the service home agent to which the address belongs is directly routed to the service home agent; the packet is parsed as a tunnel encapsulation packet, and the destination address of the packet is the service home agent address.
  • the address management module is further configured to allocate a new terminal address pool for the newly added home agent when adding a home agent in the home agent cluster system, and Adding a terminal address pool of the newly added home agent to the calculation result set of the preset algorithm; and/or
  • the terminal address pool of the home agent to be deleted is deleted from the calculation result set of the preset algorithm, and the terminal address pool of the home agent to be deleted is deleted.
  • the invention also discloses a service router, wherein the service router is applied to a home agent cluster system, and includes an address management module and a routing module.
  • the address management module is configured to allocate a terminal address pool for each home agent in the home agent cluster system
  • the routing module is configured to determine a routing address when the node accesses the home agent, and determine, according to the terminal address pool, the home agent corresponding to the routing address as a service home agent; and route the packet sent by the node to the node
  • the service home agent completes the access of the node to the service home agent.
  • the routing module includes: a first determining unit, configured to parse the packet sent by the node to be Mobile Internet Protocol IP signaling or proxy mobile IP signaling, and the mobile IP signaling or The home address field in the proxy mobile IP signaling does not include a valid address, and the routing address of the packet is determined according to a preset algorithm.
  • the routing module includes: a first routing unit configured to parse the message as mobile IP signaling or proxy mobile IP signaling, and the home address domain in the mobile IP or the proxy mobile IP signaling If a valid address is included, it is directly routed to the service home agent according to the service home agent to which the address belongs;
  • a second routing unit configured to parse the packet as a tunnel encapsulation packet, and the destination address of the packet is the proxy address of the service home, and routing to the service hometown according to the source address of the inner layer IP of the tunnel The service home agent to which the proxy address belongs;
  • a third routing unit configured to parse the source address of the message as a service home agent address, and then route to an internet/home network, a bearer network, or a foreign agent according to the destination address;
  • a fourth routing unit configured to parse the message as a message from the Internet/home network, and the routing destination address is a terminal address, and then route to the service home agent accessed by the terminal according to the destination address.
  • the address management module is further configured to:
  • the terminal address pool of the home agent to be deleted is deleted from the calculation result set of the preset algorithm, and the terminal address pool of the home agent to be deleted is deleted.
  • the invention configures a service router in a home agent cluster system, and the service router allocates a terminal address pool to each home agent in the home agent cluster system, selects and determines a service home agent that the node accesses, and a routing message.
  • the invention does not need the support of the external network element for the corresponding protocol, and does not need to upgrade and replace the device, thereby reducing the cost.
  • the service router is used to make the home agent cluster system externally display as a single system, and the networking is simple and easy to maintain.
  • Figure 1 exemplarily describes the deployment method of the home agent single system
  • FIG. 2 exemplarily describes a deployment mode of an existing home agent cluster system
  • Figure 5 exemplarily depicts the service router of the present invention.
  • the existing home agent cluster system deployment method includes multiple home agents.
  • the terminal user accesses the network, and includes the following processing steps:
  • Step 201 The mobile terminal user, that is, the mobile node 11 accesses the network, and sends a registration request of the mobile IP to the centralized control point home agent cluster system 1 of the load sharing through the foreign agent 12;
  • Step 202 The first home agent 101 in the home agent cluster system 1 selects a home agent according to the situation of the cluster system, for example, the second home agent 102 is used as the home agent of the terminal user access, and the home agent cluster system 1 A home agent 101 responds to the mobile terminal user's mobile IP registration response, rejects the request of the mobile terminal user to access the session, and recommends the second home agent 102 as the home agent of the current access session;
  • Step 203 After receiving the rejection request of the home agent, the mobile terminal user finds that the first home agent 101 has recommended a new second home agent 102, and the mobile terminal user sends the mobile IP registration request to the second home agent 102 again. Request access;
  • Step 204 the second home agent 102 accepts the registration request of the terminal user
  • Step 205 The signaling interaction between the mobile terminal user and the home agent, the message forwarding, and the like are performed by the second home agent 102, and the second home agent 102 provides the mobile terminal user with the service.
  • the first township agent 101 serves as a centralized control point for load sharing, and according to the situation of the cluster system, when the second home agent 102 is selected to provide services to the user, the dynamic hometown of the selection is selected.
  • the proxy technology requires the corresponding protocol support of other network elements such as mobile node (MN), foreign agent (FA), and terminal.
  • the first township agent 101 acts as a centralized control point for load sharing, assigns the second home agent 102 to provide services to the terminal user, needs to respond to the registration response of the terminal user mobile IP, and recommends the second home agent 102 to the terminal user.
  • the end user After receiving the rejection request and recommendation, the end user sends a new request to the recommended second home agent 102, where there is additional signaling interaction, and the signaling interaction is not based on Mobile IP.
  • This requires the network elements in the home agent cluster system to support the corresponding protocols; at the same time, these additional signaling interaction processes increase the user access time and are less efficient.
  • the external network element needs to support the corresponding protocol.
  • many old devices in the current network cannot support the corresponding protocol.
  • the establishment of the home agent cluster system needs to eliminate the old equipment, and the cost is high.
  • step 203 and step 204 in the existing home agent cluster system, there is a centralized control point as load sharing, but this control point cannot shield other home agents due to limitations of its own functions, so all home agents
  • the address is still visible to the outside world, which makes the networking of the home agent cluster system more complicated.
  • Each additional or reduced one home agent requires an external network element, such as a billing authentication authorization server (AAA), a foreign agent (FA), etc.
  • AAA billing authentication authorization server
  • FA foreign agent
  • a home agent cluster system deployment method mainly includes a process of a node accessing a home agent.
  • the process of connecting a node to a home agent mainly includes the following processing steps:
  • the service router allocates a terminal address pool for each home agent in the home agent cluster
  • the service router determines the routing address when the node accesses the home agent, and determines, according to the terminal address pool, the home agent corresponding to the routing address as the agent of the good hometown;
  • the service router routes the packet sent by the node to the service home agent to complete the access of the node to the service home agent.
  • step A1 the service router allocates a terminal address pool to each home agent in the home agent cluster system, because the terminal address pool allocated to each home agent does not overlap, so the corresponding home agent can be judged by the terminal address. Convenient.
  • step A2 the service router determines the routing address when the node accesses the home agent as follows: The service router parses out the message sent by the node is mobile (Mobile) IP signaling or proxy (Proxy) Mobile IP signaling, and The Home address (Address) field in the Mobile IP signaling or Proxy Mobile IP signaling does not contain a valid address, and the service router determines the routing address of the signaling according to a preset algorithm.
  • the preset algorithm may be a dynamic routing algorithm that selects the lightest home agent according to the load of the home agent system; or may be an algorithm for hash selection according to the keyword information of the signaling, or may be a polling algorithm, or Is another algorithm.
  • a method for deploying a home agent cluster system according to an embodiment of the present invention further includes packet routing after the node accesses the home agent.
  • the packet route is as follows:
  • the service router parses the packet as Mobile IP signaling or Proxy Mobile IP signaling, and the Home Address field in the Mobile IP or Proxy Mobile IP signaling contains a valid address, the service router follows the service to which the address belongs.
  • the home agent directly routes to the service home agent;
  • External networks include the Internet, home networks, bearer networks, and more.
  • the home agent cluster system In the home agent cluster system, a variety of routing methods are used inside, so that the home agent cluster system can still transfer data quickly when accommodating multiple home agents, improve the scalability of the home agent cluster system, and expand the home agent cluster. The capacity of the system.
  • the service router can display the entire home agent cluster system as a single system.
  • the networking is simple, easy to operate, and easy to maintain.
  • the terminal user accesses the network, including the following steps:
  • Step 301 The user terminal accesses the network, requests to use the Mobile IP or Proxy Mobile IP service, and the terminal user, that is, the mobile node 11, sends a Mobile IP registration request or a Proxy Mobile IP registration request to the service router 13 through the foreign agent 12, and the request is
  • the source address includes the user terminal address, the passed foreign agent address, and the bearer network address, but the Home Address field of the message does not contain a valid address;
  • Step 302 The service router 13 parses the request message as Mobile IP signaling or Proxy Mobile IP signaling, and the home address field of the packet does not include a valid address, and the service router 13 selects a hometown according to a preset algorithm.
  • the agent 10, and routing the message to the selected home agent 10, the selected home agent 10 processes the message, and accepts the user access in the home agent cluster system, and allocates the Home Address field to the user terminal. Address, the home agent 10 becomes the service home agent of the node;
  • Step 303 The service home agent sends a response message of the request message to the user terminal, where the destination address of the response message is the source address of the request message, the response message arrives at the service router 13, and the service router 13 follows the routing mode.
  • the response message is routed to the foreign agent 12, and is forwarded by the foreign agent 12 to the user terminal, that is, the mobile node 11.
  • the access is successful;
  • Step 304 the terminal user sends the message to the Internet/home network.
  • the destination address of the service packet is the Internet/home network.
  • the service packet sent by the terminal user is sent to the foreign agent 12 in the form of a reverse packet as needed.
  • the foreign agent 12 encapsulates the packet into a reverse tunnel encapsulation packet.
  • the packet is sent to the service router 13, and the reverse tunnel encapsulation packet is processed by the home agent 10 and sent to the Internet. Therefore, the source address of the inner layer IP of the packet tunnel includes the address of the home agent 10 accessed by the user.
  • Step 305 The service router 13 routes the reverse tunnel encapsulation packet of the terminal to the home agent 10 accessed by the user according to the route mode 2, and the home agent 10 decapsulates, compresses, and performs service quality on the reverse tunnel encapsulation packet. (QoS) and billing processing;
  • Step 306 The home agent 10 routes the decapsulated service packet to the Internet/home network whose information needs to be exchanged by the terminal user according to the routing mode 3, or directly to the destination network without passing through the service router 13;
  • Step 307 A message sent from the Internet/home network to the end user service, whose destination address is The terminal user address, the message first arrives at the service router 13, and the service router 13 routes the message to the home agent 10 accessed by the terminal user according to the route mode 4;
  • Step 308 the home agent 10 sends the packet to the service router 13 after being encapsulated in the forward tunnel, and the service router 13 routes the forward tunnel encapsulation packet to the foreign agent 12 according to the route mode 3. After the foreign agent 12 de-tunes the tunnel, The "3 ⁇ 4" text is forwarded to the end user, and can also be directly routed to the destination network without passing through the service router 13.
  • routing mode 2 and mode 3 used in this embodiment are described in detail above, and are not described here.
  • the service router directly selects a home agent to provide services for the terminal user according to a preset algorithm, does not need dynamic home agent technology, and does not need cooperation of other external network element nodes and corresponding protocol support, since no external is needed.
  • the NE supports the corresponding protocol, and there is no need to replace or upgrade the external network element, which reduces operating costs.
  • the service router directly allocates the selected home agent to provide services to the end user, and does not require additional non-basic Mobile IP signaling interaction, and thus does not require other external network elements to communicate with the non-base mobile IP signaling protocol. Support, at the same time, because no additional signaling interaction is required, the user's access time is shortened, the efficiency is improved, and the resources inside the cluster system are saved.
  • the service router allocates a new terminal address pool for the newly added home agent
  • the service router adds the terminal address pool of the newly added home agent to the calculation result set of the preset algorithm.
  • the preset algorithm calculates a terminal address pool corresponding to a home agent.
  • the calculation result set of the preset algorithm refers to a set of all possible calculated terminal address pools of the preset algorithm.
  • a home generation cluster system includes three home agents, ⁇ -1, ⁇ -2, ⁇ -3, and the corresponding terminal address pools are HA-lad, HA-2ad, HA-3ad, and the terminal calculated by the preset algorithm.
  • the address pool may only be one of HA-lad, HA-2ad, and HA-3ad, and HA-lad, HA-2ad, and HA-3ad constitute the calculation result set of the preset algorithm.
  • the service router first The HA-N allocates a new terminal address pool HA-Nad, and then adds the HA-Nad to the calculation result set of the preset algorithm.
  • the calculation result set of the preset algorithm includes HA-lad, HA-2ad, HA-3ad, HA-Nad four terminal address pools, corresponding to four home agents of HA-l, HA-2, HA-3, and HA-N.
  • Deleting a home agent in the home agent cluster system includes the following processing steps:
  • the service router deletes the terminal address pool of the home agent to be deleted from the calculation result of the preset algorithm.
  • the home agent to be deleted retains the current online session. After all the sessions are finished, the service router deletes the terminal address pool of the home agent to be deleted, and can directly end the current online session, and then the service router deletes the home agent to be deleted. Terminal address pool.
  • the calculation result set of the preset algorithm of the cluster system includes three terminal address pools of HA-lad, HA-2ad, and HA-3ad.
  • the service router deletes the terminal address pool HA-lad corresponding to HA-1 from the result set of the preset algorithm, and then retains the current online session. After all the sessions are finished, delete the HA-A.
  • the corresponding terminal address pool HA-lad can also directly end the current session and delete the terminal address pool HA-lad corresponding to the HA-A.
  • the internal structure of the home agent cluster system can be simply modified and reduced without corresponding changes to the external network element.
  • the networking difficulty has improved the networking efficiency.
  • the present invention also discloses a home agent cluster system 1 including a plurality of home agents 10, and a service router 13, the service router 13 including an address management module, a routing module, and the address management module.
  • the router module is configured to allocate a terminal address pool to each home agent;
  • the routing module is configured to determine a routing address when the node accesses the home agent, and determine, according to the terminal address pool, the home agent corresponding to the routing address as a service home agent;
  • the message sent by the node is routed to the service home agent, and the access of the node to the service home agent is completed.
  • the routing module includes: a first determining unit, configured to parse out that the packet sent by the node is Mobile IP signaling or Proxy Mobile IP signaling, And the Mobile Address signaling or the Home Address field in the Proxy Mobile IP signaling does not include a valid address, and the routing address of the signaling is determined according to a preset algorithm.
  • the routing module is configured to parse the packet as Mobile IP signaling or Proxy Mobile IP signaling, and the Mobile IP or the Proxy Mobile IP signaling
  • the home address field in the middle contains a valid address, and the service router directly routes to the service home agent according to the service home agent to which the address belongs;
  • the routing module parses the packet as a tunnel encapsulation message, and the purpose of the message
  • the address is the service home agent address, and is routed to the service home agent to which the service home agent address belongs according to the source address of the tunnel inner layer IP;
  • the routing module parses out that the source address of the message is the service home agent address, then
  • the destination address is routed to the Internet/home network, the bearer network, or the foreign agent; and
  • the routing module parses the packet as a packet from the Internet/home network, and the routing destination address is the terminal address, and then routes according to the destination address.
  • the service home agent that is connected to the terminal.
  • the address management module when a home agent is added to the home agent cluster system, the address management module is configured to allocate a new terminal address pool for the newly added home agent, and The terminal address pool of the newly added home agent is added to the calculation result set of the preset algorithm.
  • the address management module when the home agent is deleted in the home agent cluster system, the address management module is configured to use the terminal address pool of the home agent to be deleted from the preset algorithm. The result of the calculation is deleted, and the terminal address pool of the home agent is deleted.
  • the present invention also discloses a service router, where the service router is applied to a home agent cluster system, and includes an address management module 131 and a routing module 132, and the address management module 131 is configured to be Each home agent in the home agent cluster system allocates a terminal address pool; the routing module 132 is configured to determine a routing address when the node accesses the home agent, and determine the home address corresponding to the routing address according to the terminal address pool.
  • the agent is the agent of the good hometown; and the message sent by the node is routed to the service home agent, and the access of the node to the service home agent is completed.
  • the routing module may include: a first determining unit, configured to parse the packet sent by the node to be Mobile Internet Protocol IP signaling or proxy mobile IP signaling, and the mobile IP signaling Or the home address field in the proxy mobile IP signaling does not include a valid address, and the routing address of the packet is determined according to a preset algorithm.
  • the routing module may include: a first routing unit configured to parse the report The mobile IP signaling or proxy mobile IP signaling, and the home address field in the mobile IP or the proxy mobile IP signaling includes a valid address, and is directly routed according to the service home agent to which the address belongs The service home agent; the second routing unit is configured to parse the message as a tunnel encapsulation message, and the destination address of the message is the service home agent address, according to the source address of the tunnel inner layer IP Routing to the service home agent to which the service home agent address belongs; the third routing unit is configured to parse out that the source address of the message is a service home agent address, and then route to the Internet/home network, bearer network, or according to the destination address. And a fourth routing unit, configured to parse the message as a message from the Internet/home network, and the routing destination address is a terminal address, and then route the service to the terminal according to the destination address. proxy.
  • address management module is further configured to:
  • the terminal address pool of the home agent to be deleted is deleted from the calculation result set of the preset algorithm, and the terminal address pool of the home agent to be deleted is deleted.
  • the invention configures a service router in a home agent cluster system, and the service router allocates a terminal address pool to each home agent in the home agent cluster system, selects and determines a service home agent that the node accesses, and a routing message.
  • the invention does not need the support of the external network element for the corresponding protocol, and does not need to upgrade and replace the device, thereby reducing the cost.
  • the service router is used to make the home agent cluster system externally display as a single system, and the networking is simple and easy to maintain.
  • the method for the node to access the home agent according to the present invention does not require the support of other network elements for the corresponding protocol when the home agent is selected to provide services for the user, and does not need to add an additional signaling interaction process, thereby reducing user access.
  • the invention provides a home agent cluster system, which does not require other network elements to support the corresponding protocol, and does not need to upgrade and replace equipment, thereby reducing the cost; at the same time, each home agent is not required to be added or reduced in the system.
  • the external network element is added, and the networking is simple and easy to maintain.
  • the service router provided by the present invention causes the home agent cluster system to be externally displayed as a single system, and the networking is simple and easy to maintain.

Abstract

本发明提供了一种节点接入家乡代理的方法、家乡代理集群系统及业务路由器。其中,节点接入家乡代理的方法包括:业务路由器为家乡代理集群系统中的每一个家乡代理分配终端地址池;业务路由器在节点接入家乡代理时确定路由地址,并根据终端地址池确定该路由地址对应的家乡代理为服务家乡代理;以及业务路由器将节点发来的报文路由到服务家乡代理,以完成节点到服务家乡代理的接入。上述节点接入家乡代理的方法,在选择家乡代理为用户提供服务时,不需要其他网元对相应协议的支持,不需要增加额外的信令交互过程,因而可以减少用户的接入时长,提高效率;上述业务路由器,使家乡代理集群系统对外显示为单系统,组网简单、易于维护。

Description

节点接入家乡代理的方法、 家乡代理集群系统及业务路由器
技术领域
本发明涉及通信领域, 尤其是涉及移动通信系统的移动互联网协议 IP领 域中一种节点接入家乡代理的方法、 家乡代理集群系统及业务路由器。
背景技术
移动互联网协议( IP )技术和代理移动 IP技术广泛的应用于移动通信领 域。 移动 IP技术和代理移动 IP技术涉及到以下几个系统: 移动终端、 外地 代理( Foreign Agent )、家乡代理( Home Agent )、鉴权计费授权系统( AAA )。
现有的家乡代理系统常有单系统或集群两种部署方式。
单系统部署方式, 即家乡代理系统中只包含一个家乡代理 10, 如图 1所 示, 在该家乡代理系统中, 移动节点 11通过外地代理 12和家乡代理 10接入 家乡网络或互联网。 单系统部署方式的系统容量小, 扩展性差, 现在已经很 少应用于商用局中。
为解决单系统部署的缺点提出了集群部署方式, 现有的集群系统中包含 若干个单系统, 每个单系统对外公开地址, 对外可见。 现有的集群部署方式 中, 由于集群对外呈现多个家乡代理, 因此需要选择一个家乡代理作为负荷 分担的集中控制点, 即需要一个网元节点识别并分配哪些用户接入到哪个家 乡代理, 来实现用户在集群系统内部的负荷分担。 用户分配技术有很多种, 典型的是 RFC4433、 3GPP2-X.S0011-002-D等协议。
现有的集群部署方式存在一些缺点, 首先, 需要选择一个家乡代理作为 负荷分担的集中控制点, 集中控制点在釆用动态家乡代理技术选择并分配家 乡代理给用户提供服务时, 需要外部网元相应的协议的支持。 现网中很多老 旧终端无法支持相应的协议, 也无法升级到可支持相应的协议的版本, 对于 运营商来说, 部署集群系统需要淘汰旧设备, 成本太高, 增加了运营商部署 集群系统的顾虑。
其次, 由于家乡代理本身的限制, 无法屏蔽其他家乡代理, 因此所有的 家乡代理仍然对外可见, 组网复杂, 在这种家乡代理集群系统中, 每增加或 减少一个节点, 都需要外部网元, 例如计费鉴权授权服务器(AAA ) 、 外地 代理(FA )等网元做相应的改动, 组网复杂度高。 发明内容
本发明提供了一种家乡代理集群系统, 可降低成本, 降低组网难度。 为了解决上述技术问题, 本发明釆用了如下技术方案:
一种节点接入家乡代理的方法, 所述节点接入家乡代理的方法包括: 业务路由器为家乡代理集群系统中的每一个家乡代理分配终端地址池; 所述业务路由器在节点接入家乡代理时确定路由地址, 并根据所述终端 地址池确定该路由地址对应的家乡代理为服务家乡代理; 以及
所述业务路由器将所述节点发来的报文路由到所述服务家乡代理, 以完 成所述节点到所述服务家乡代理的接入。
在所述家乡代理集群系统的部署方法的一种实施例中, 所述业务路由器 解析出节点发来的报文是移动( Mobile )IP信令或代理( Proxy )移动 ( Mobile ) IP信令, 且 Mobile IP信令或 Proxy Mobile IP信令中的家乡 ( Home )地址 ( Address )域中不包含有效的地址, 所述业务路由器按照预设算法确定所述 报文的路由地址。
在所述家乡代理集群系统的部署方法的一种实施例中, 所述预设算法为 根据所述家乡代理集群系统的负荷, 选择负荷最轻的家乡代理的动态路由的 算法; 或为根据所述报文的关键字信息进行哈希选择的算法,或为轮询算法。
在所述家乡代理集群系统的部署方法的一种实施例中, 节点接入服务家 乡代理后, 按如下方式路由报文:
当业务路由器解析出报文是 Mobile IP信令或 Proxy Mobile IP信令, 且 Mobile IP或 Proxy Mobile IP信令中的 Home Address域中包含有效的地址, 所述业务路由器按照所述地址所属的服务家乡代理直接路由至所述服务家乡 代理;
当所述业务路由器解析出报文为隧道封装报文, 且所述报文的目的地址 是服务家乡代理地址, 则根据隧道内层 IP的源地址路由至该服务家乡代理地 址所属的服务家乡代理;
当所述业务路由器解析出所述报文的源地址是服务家乡代理地址, 则按 照目的地址路由到互联网或家乡网络、 承载网络或外地代理; 以及
当所述业务路由器解析出所述报文为来自由互联网或家乡网络的报文, 且报文的目的地址是终端地址, 则按照目的地址路由到所述终端接入的服务 家乡代理。
在所述家乡代理集群系统的部署方法的一种实施例中, 还包括: 所述业务路由器为新添加的家乡代理分配新的终端地址池; 以及 所述业务路由器将所述新添加的家乡代理的终端地址池添加到所述预设 算法的计算结果集中。
在所述家乡代理集群系统的部署方法的一种实施例中, 还包括: 所述业务路由器将待删除的家乡代理的终端地址池从所述预设算法的计 算结果集中删除; 以及
所述待删除的家乡代理保留当前在线的会话, 待所有会话结束后, 所述 业务路由器删除所述待删除的家乡代理的终端地址池; 或直接结束所述待删 除家乡代理的当前在线的会话, 所述业务路由器删除所述待删除家乡代理的 终端地址池。
本发明还公开了一种家乡代理集群系统, 包含多个家乡代理, 还包括业 务路由器, 所述业务路由器包括地址管理模块和路由模块, 所述地址管理模 块设置成为家乡代理集群系统中的每一个家乡代理分配终端地址池; 所述路 由模块设置成在节点接入家乡代理时确定路由地址, 并根据所述终端地址池 确定该路由地址对应的家乡代理为服务家乡代理; 以及将节点发来的报文路 由到所述服务家乡代理, 完成节点到所述服务家乡代理的接入。
本发明公开的一种家乡代理集群系统中, 所述路由模块设置成解析出所 述节点发来的所述报文是 Mobile IP信令或 Proxy Mobile IP信令,且 Mobile IP 信令或 Proxy Mobile IP信令中的 Home Address域中不包含有效的地址,则按 照预设算法确定所述报文的路由地址。 本发明公开的一种家乡代理集群系统中, 所述路由模块设置成解析出所 述才艮文是 Mobile IP信令或 Proxy Mobile IP信令,且 Mobile IP或 Proxy Mobile IP信令中的 Home Address域中包含有效的地址,则按照所述地址所属的服务 家乡代理直接路由至该服务家乡代理; 解析出所述报文为隧道封装报文, 且 所述报文的目的地址是服务家乡代理地址, 则根据隧道内层 IP的源地址路由 至该服务家乡代理地址所属的服务家乡代理; 解析出所述报文的源地址是所 述服务家乡代理地址, 则按照目的地址路由到互联网 /家乡网络、 承载网络或 外地代理; 以及解析出所述报文为来自由互联网 /家乡网络的报文, 且路由目 的地址是终端地址, 则按照目的地址路由到该终端接入的服务家乡代理。
本发明公开的一种家乡代理集群系统中, 所述地址管理模块还设置成在 所述家乡代理集群系统中添加一个家乡代理时, 为新添加的家乡代理分配新 的终端地址池, 并将所述新添加的家乡代理的终端地址池添加到所述预设算 法的计算结果集中; 和 /或
在所述家乡代理集群系统中删除一个家乡代理时, 将待删除的家乡代理 的终端地址池从所述预设算法的计算结果集中删除, 并删除所述待删除的家 乡代理的终端地址池。
本发明还公开了一种业务路由器, 其中, 所述业务路由器应用于家乡代 理集群系统中, 其包括地址管理模块和路由模块,
所述地址管理模块设置成为所述家乡代理集群系统中的每一个家乡代理 分配终端地址池;
所述路由模块设置成在节点接入家乡代理时确定路由地址, 并根据所述 终端地址池确定该路由地址对应的家乡代理为服务家乡代理; 以及将所述节 点发来的报文路由到所述服务家乡代理, 完成所述节点到所述服务家乡代理 的接入。
其中, 所述路由模块包括: 第一确定单元, 其设置成解析出所述节点发 来的所述报文是移动互联网协议 IP信令或代理移动 IP信令, 且所述移动 IP 信令或所述代理移动 IP信令中的家乡地址域中不包含有效的地址,则按照预 设算法确定所述报文的路由地址。 所述路由模块包括: 第一路由单元, 其设置成解析出所述报文是移动 IP 信令或代理移动 IP信令,且所述移动 IP或所述代理移动 IP信令中的家乡地 址域中包含有效的地址, 则按照所述地址所属的服务家乡代理直接路由至该 服务家乡代理;
第二路由单元, 其设置成解析出所述报文为隧道封装报文, 且所述报文 的目的地址是所述服务家乡代理地址, 则根据隧道内层 IP的源地址路由至该 服务家乡代理地址所属的服务家乡代理;
第三路由单元,其设置成解析出所述报文的源地址是服务家乡代理地址, 则按照目的地址路由到互联网 /家乡网络、 承载网络或外地代理; 以及
第四路由单元, 其设置成解析出所述报文为来自由互联网 /家乡网络的报 文, 且路由目的地址是终端地址, 则按照目的地址路由到该终端接入的服务 家乡代理。
另外, 所述地址管理模块还设置成:
在所述家乡代理集群系统中添加一个家乡代理时, 为新添加的所述家乡 代理分配新的终端地址池, 并将新添加的所述家乡代理的所述新的终端地址 池添加到所述预设算法的计算结果集中; 和 /或
在所述家乡代理集群系统中删除一个家乡代理时, 将待删除的家乡代理 的终端地址池从所述预设算法的计算结果集中删除, 并删除所述待删除的家 乡代理的终端地址池。 与现有技术相比, 本发明的有益效果在于:
本发明通过在家乡代理集群系统中配置业务路由器, 由业务路由器给家 乡代理集群系统中的每个家乡代理分配终端地址池, 选择并确定节点接入的 服务家乡代理, 以及路由报文。 本发明不需要外部网元对相应协议的支持, 无需升级和替换设备, 降低了成本; 同时, 釆用业务路由器, 使家乡代理集 群系统对外显示为单系统, 组网简单、 易于维护。 附图概述
图 1示例性地描述了家乡代理单系统部署方式;
图 2示例性地描述了现有家乡代理集群系统部署方式; 图 5示例性地描述了本发明的业务路由器。 本发明的较佳实施方式
下面对照附图并结合具体实施方式对本发明进行进一步详细说明: 为更清晰的体现本发明的发明构思, 首先对现有的家乡代理集群系统部 署方式进行分析:
如图 2所示,现有的家乡代理集群系统部署方式, 包含多个家乡代理 10。 现有的家乡代理集群系统中, 终端用户接入网络, 包含以下处理步骤:
步骤 201 , 移动终端用户即移动节点 11接入网络, 通过外地代理 12向 负荷分担的集中控制点家乡代理集群系统 1发送移动 IP的注册请求;
步骤 202, 家乡代理集群系统 1 中的第一家乡代理 101根据本集群系统 情况选择一个家乡代理, 如第二家乡代理 102作为本次终端用户接入的家乡 代理, 家乡代理集群系统 1中的第一家乡代理 101回应移动终端用户移动 IP 的注册应答, 拒绝本次移动终端用户接入会话的请求, 并推荐第二家乡代理 102作为本次接入会话的家乡代理;
步骤 203 , 移动终端用户收到家乡代理的拒绝请求后, 发现第一家乡代 理 101为其推荐了新的第二家乡代理 102, 移动终端用户再次发送移动 IP的 注册请求至第二家乡代理 102, 请求接入;
步骤 204, 第二家乡代理 102接受终端用户的注册请求;
步骤 205, 移动终端用户与家乡代理的信令交互、 报文转发等通过第二 家乡代理 102进行, 第二家乡代理 102为该移动终端用户提供服务。
分析以上步骤, 可以发现, 在步骤 202中, 第一家乡代理 101作为负荷 分担的集中控制点, 根据本集群系统的状况, 选择第二家乡代理 102给用户 提供服务时, 这种选择的动态家乡代理技术需要其他网元例如移动节点 ( MN ) 、 外地代理(FA ) 、 终端的相应的协议支持。 在步骤 202中, 第一家乡代理 101作为负荷分担的集中控制点, 分配第 二家乡代理 102给终端用户提供服务,需要回应终端用户移动 IP的注册应答, 并推荐第二家乡代理 102给终端用户, 终端用户收到拒绝请求和推荐后, 发 送新的请求至所推荐的第二家乡代理 102, 这之间有额外的信令交互, 而这 些信令交互不是以 Mobile IP为的基础的协议,这要求家乡代理集群系统中的 网元对相应协议的支持; 同时, 这些额外的信令交互过程会增加用户的接入 时长, 效率较低。
现有家乡代理系统中, 需要外部网元支持相应的协议, 可是现网中很多 老旧设备无法支持相应的协议, 建立家乡代理集群系统需要淘汰老旧设备, 成本高。
在步骤 203和步骤 204中, 在现有的家乡代理集群系统中, 有一个作为 负荷分担的集中控制点, 但这个控制点由于本身功能的限制, 无法屏蔽其他 家乡代理, 因此所有的家乡代理的地址仍然对外可见, 这就使家乡代理集群 系统的组网较为复杂, 每增加或减少一个家乡代理, 都需要外部网元, 例如 计费鉴权授权服务器(AAA ) 、 外地代理(FA )等网元做相应的改动, 组网 复杂。
本发明一种实施例的家乡代理集群系统部署方法, 主要包括节点接入家 乡代理的过程。
节点接入家乡代理的过程主要包含如下处理步骤:
A1、 业务路由器为家乡代理集群中的每一个家乡代理分配终端地址池;
A2、 业务路由器在节点接入家乡代理时确定路由地址, 并根据终端地址 池确定该路由地址对应的家乡代理为 Λ良务家乡代理;
A3、 业务路由器将节点发来的报文路由到服务家乡代理, 以完成节点到 服务家乡代理的接入。
在步骤 A1 中, 业务路由器给家乡代理集群系统中的每个家乡代理分配 终端地址池, 因为分配给每个家乡代理的终端地址池不重叠, 所以就可以通 过终端地址判断其对应的家乡代理, 方便、 快捷。 在步骤 A2 中, 业务路由器在节点接入家乡代理时按如下方法确定路由 地址: 业务路由器解析出节点发来的报文是移动 (Mobile ) IP信令或代理 ( Proxy ) Mobile IP信令,且 Mobile IP信令或 Proxy Mobile IP信令中的家乡 ( Home )地址(Address )域中不包含有效的地址, 则业务路由器按照预设算 法确定信令的路由地址。
预设算法可以是根据家乡代理系统的负荷, 选择负荷最轻的家乡代理的 动态路由算法; 也可以是根据信令的关键字信息进行哈希选择的算法, 也可 以是轮询算法, 还可以是其他算法。
本发明一种实施例的家乡代理集群系统部署方法, 还包括节点接入服务 家乡代理后的报文路由。
节点接入服务家乡代理后的报文路由, 按如下方式进行:
方式一,当业务路由器解析出报文是 Mobile IP信令或 Proxy Mobile IP信 令, 且 Mobile IP或 Proxy Mobile IP信令中的 Home Address域中包含有效的 地址, 则业务路由器按照地址所属的服务家乡代理直接路由至该服务家乡代 理;
方式二, 当业务路由器解析出报文为隧道封装报文, 且报文的目的地址 是服务家乡代理地址, 则根据隧道内层 IP的源地址路由至该地址所属的服务 家乡代理;
方式三, 当业务路由器解析出报文的源地址是服务家乡代理地址, 则按 照目的地址路由到互联网 /家乡网络、 承载网络或外地代理;
方式四, 当业务路由器解析出报文来自由互联网 /家乡网络的报文, 且路 由目的地址是终端地址,则按照目的地址路由到该终端接入的服务家乡代理。
外部网络包括互联网、 家乡网络、 承载网络等。
在家乡代理集群系统内部使用多种路由方式, 使家乡代理集群系统的内 部在容纳多个家乡代理的时候仍然能快速地传递数据, 提高了家乡代理集群 系统的可扩展性, 扩大了家乡代理集群系统的容量。
从业务路由器路由报文的方式中可以看出, 上述业务路由器可以使整个 家乡代理集群系统对外显示为一个单系统, 组网简单、 操作方便、 易于维护。 如图 3所示, 终端用户接入网络, 包括以下步骤:
步骤 301 , 用户终端接入网络, 请求使用 Mobile IP或 Proxy Mobile IP业 务,终端用户即移动节点 11通过外地代理 12发送 Mobile IP注册请求或 Proxy Mobile IP注册请求至业务路由器 13 , 该请求 4艮文的源地址包含用户终端地 址、 经过的外地代理地址、 承载网地址的信息, 但所述报文的 Home Address 域中不包含有效的地址;
步骤 302, 业务路由器 13解析出所述请求报文是 Mobile IP信令或 Proxy Mobile IP信令,且报文的 Home Address域中不包含有效的地址,则业务路由 器 13按照预设算法选择一个家乡代理 10, 并将该报文路由至选定的家乡代 理 10, 被选定的家乡代理 10处理该报文, 并接受用户在本家乡代理集群系 统接入, 为用户终端分配 Home Address域有效的地址, 该家乡代理 10成为 该节点的服务家乡代理;
步骤 303 , 服务家乡代理发送请求报文的应答报文至用户终端, 该应答 报文的目的地址为请求报文的源地址, 该应答报文到达业务路由器 13 , 业务 路由器 13按照路由方式三将该应答报文路由至外地代理 12, 并由外地代理 12转交至用户终端即移动节点 11 , 终端用户收到应答报文后, 接入成功; 步骤 304, 终端用户发送至互联网 /家乡网络之间的业务报文的目的地址 为互联网 /家乡网络, 终端用户发送的业务报文根据需要以反向报文的形式先 发送至外地代理 12, 外地代理 12将其封装为反向隧道封装报文后发送至业 务路由器 13 , 此反向隧道封装报文需经家乡代理 10处理后发送至互联网, 所以该报文隧道内层 IP的源地址包含用户接入的家乡代理 10的地址;
步骤 305 , 业务路由器 13按照路由方式二, 将所述终端反向隧道封装报 文路由至用户接入的家乡代理 10, 该家乡代理 10对反向隧道封装报文进行 解封装、 压缩、 业务质量(QoS ) 以及计费等处理;
步骤 306, 家乡代理 10将解封装后的业务报文按照路由方式三, 路由至 其终端用户需要有信息交流的互联网 /家乡网络;也可以不经过业务路由器 13 直接路由至目的网络;
步骤 307 , 自互联网 /家乡网络发给终端用户业务的报文, 其目的地址是 终端用户地址, 此报文先到达业务路由器 13 , 业务路由器 13按照路由方式 四将该报文路由至终端用户接入的家乡代理 10;
步骤 308, 家乡代理 10将该报文进行前向隧道封装后发送至业务路由器 13 , 业务路由器 13按照路由方式三将前向隧道封装报文路由至外地代理 12, 外地代理 12解隧道封装后, 将"¾文转发至终端用户, 也可以不经过业务路由 器 13直接路由至目的网络。
该实施例中使用的路由方式二、 方式三已在上文详细介绍, 此处不再赘 述。
由步骤 303可知, 业务路由器按照预设算法直接选择了一个家乡代理为 终端用户提供服务, 不需要动态家乡代理技术, 也不需要其他外部网元节点 的配合和相应协议的支持, 由于不需要外部网元对相应协议的支持, 无需替 换或升级外部网元, 降低了运营成本。
由步骤 303还可以知道, 业务路由器直接分配选定的家乡代理给终端用 户提供服务, 不需要额外的非基础 Mobile IP信令交互, 也就无需其他外部网 元对非基础 Mobile IP信令协议的支持, 同时, 由于不需要额外的信令交互, 缩短了用户的接入时长, 提高了效率, 也节约了集群系统内部的资源。
在家乡代理集群系统中添加一个家乡代理, 包含以下处理步骤:
Bl、 业务路由器为新添加的家乡代理分配新的终端地址池;
B2、 业务路由器将所述新添加的家乡代理的终端地址池添加到预设算法 的计算结果集中。
预设算法的计算出的是一个终端地址池, 对应于一个家乡代理, 预设算 法的计算结果集指该预设算法的所有可能计算出的终端地址池构成的集合。
例如, 一个家乡代集群系统包括 ΗΑ-1,ΗΑ-2,ΗΑ-3 三个家乡代理, 对应 的终端地址池分别为 HA-lad, HA-2ad, HA-3ad,预设算法计算出的终端地址池 只可能为 HA-lad, HA-2ad, HA-3ad中的一个, 则 HA-lad, HA-2ad, HA-3ad构 成了该预设算法的计算结果集。
添加一个家乡代理 HA-N到上述家乡代理集群系统中, 业务路由器先为 HA-N分配新的终端地址池 HA-Nad, 然后将 HA-Nad添加到预设算法的计算 结果集中, 此时预设算法的计算结果集中包含 HA-lad, HA-2ad, HA-3ad, HA-Nad四个终端地址池, 对应于 HA-l,HA-2,HA-3 , HA-N四个家乡代理。
在家乡代理集群系统中删除一个家乡代理, 包含以下处理步骤:
C1、 业务路由器将待删除的家乡代理的终端地址池从预设算法的计算结 果集中删除;
C2、 待删除的家乡代理保留当前在线的会话, 待所有会话结束后, 业务 路由器删除待删除的家乡代理的终端地址池, 也可以直接结束当前的在线会 话, 然后由业务路由器删除待删除家乡代理的终端地址池。
在上述包含 ΗΑ-1,ΗΑ-2,ΗΑ-3 的家乡代理集群系统中, 该集群系统的预 设算法的计算结果集包括 HA-lad, HA-2ad, HA-3ad三个终端地址池, 从中删 除 HA-1家乡代理时, 业务路由器先将 HA-1对应的终端地址池 HA-lad从预 设算法的结果集中删除, 然后保留当前在线的会话, 待所有会话结束后, 删 除 HA-A对应的终端地址池 HA-lad; 也可直接结束当前会话并删除 HA-A对 应的终端地址池 HA-lad。
由以上两个实施例可知, 在本发明中, 通过修改预设算法的计算结果集, 不需要对外部网元做相应的改动, 即可简单地实现了家乡代理集群系统内部 结构的修改, 降低了组网难度, 提高了组网效率。
如图 4所示, 本发明还公开了一种家乡代理集群系统 1 , 包含多个家乡 代理 10, 还包括业务路由器 13 , 所述业务路由器 13包括地址管理模块、 路 由模块, 所述地址管理模块设置成为每一个家乡代理分配终端地址池; 所述 路由模块设置成在节点接入家乡代理时确定路由地址, 并根据所述终端地址 池确定该路由地址对应的家乡代理为服务家乡代理; 将所述节点发来的报文 路由到所述服务家乡代理, 完成所述节点到所述服务家乡代理的接入。
本发明公开的一种家乡代理集群系统中, 所述路由模块包括: 第一确定 单元, 其设置成解析出所述节点发来的所述报文是 Mobile IP信令或 Proxy Mobile IP信令,且所述 Mobile IP信令或所述 Proxy Mobile IP信令中的 Home Address域中不包含有效的地址, 则按照预设算法确定所述信令的路由地址。 本发明公开的一种家乡代理集群系统中, 所述路由模块其设置成解析出 所述报文是 Mobile IP信令或 Proxy Mobile IP信令, 且所述 Mobile IP或所述 Proxy Mobile IP信令中的 Home Address域中包含有效的地址, 则业务路由器 按照地址所属的服务家乡代理直接路由至该服务家乡代理; 所述路由模块解 析出所述报文为隧道封装报文, 且报文的目的地址是服务家乡代理地址, 则 根据隧道内层 IP的源地址路由至该服务家乡代理地址所属的服务家乡代理; 所述路由模块解析出所述报文的源地址是服务家乡代理地址, 则按照目的地 址路由到互联网 /家乡网络、 承载网络或外地代理; 以及所述路由模块解析出 所述报文为来自由互联网 /家乡网络的报文, 且路由目的地址是终端地址, 则 按照目的地址路由到该终端接入的服务家乡代理。
本发明公开的一种家乡代理集群系统中, 在所述家乡代理集群系统中添 加一个家乡代理时, 所述地址管理模块用于为新添加的家乡代理分配新的终 端地址池, 并将所述新添加的家乡代理的终端地址池添加到所述预设算法的 计算结果集中。
本发明公开的一种家乡代理集群系统中, 在所述家乡代理集群系统中删 除一个家乡代理时, 所述地址管理模块用于将待删除的家乡代理的终端地址 池从所述预设算法的计算结果集中删除, 并删除该家乡代理的终端地址池。 如图 5所示, 本发明还公开了一种业务路由器, 其中, 所述业务路由器 应用于家乡代理集群系统中, 且包括地址管理模块 131和路由模块 132, 所 述地址管理模块 131设置成为所述家乡代理集群系统中的每一个家乡代理分 配终端地址池; 所述路由模块 132设置成在节点接入家乡代理时确定路由地 址,并才艮据所述终端地址池确定该路由地址对应的家乡代理为 良务家乡代理; 以及将所述节点发来的报文路由到所述服务家乡代理, 完成所述节点到所述 服务家乡代理的接入。
其中, 所述路由模块可以包括: 第一确定单元, 其设置成解析出所述节 点发来的所述报文是移动互联网协议 IP信令或代理移动 IP信令, 且所述移 动 IP信令或所述代理移动 IP信令中的家乡地址域中不包含有效的地址, 则 按照预设算法确定所述报文的路由地址。
另外, 所述路由模块可以包括: 第一路由单元, 其设置成解析出所述报 文是移动 IP信令或代理移动 IP信令, 且所述移动 IP或所述代理移动 IP信 令中的家乡地址域中包含有效的地址, 则按照所述地址所属的服务家乡代理 直接路由至该服务家乡代理; 第二路由单元, 其设置成解析出所述报文为隧 道封装报文, 且所述报文的目的地址是所述服务家乡代理地址, 则根据隧道 内层 IP的源地址路由至该服务家乡代理地址所属的服务家乡代理; 第三路由 单元, 其设置成解析出所述报文的源地址是服务家乡代理地址, 则按照目的 地址路由到互联网 /家乡网络、 承载网络或外地代理; 以及第四路由单元, 其 设置成解析出所述报文为来自由互联网 /家乡网络的报文, 且路由目的地址是 终端地址, 则按照目的地址路由到该终端接入的服务家乡代理。
进一步地, 所述地址管理模块还设置成:
在所述家乡代理集群系统中添加一个家乡代理时, 为新添加的所述家乡 代理分配新的终端地址池, 并将新添加的所述家乡代理的所述新的终端地址 池添加到所述预设算法的计算结果集中; 和 /或
在所述家乡代理集群系统中删除一个家乡代理时, 将待删除的家乡代理 的终端地址池从所述预设算法的计算结果集中删除, 并删除所述待删除的家 乡代理的终端地址池。
本发明通过在家乡代理集群系统中配置业务路由器, 由业务路由器给家 乡代理集群系统中的每个家乡代理分配终端地址池, 选择并确定节点接入的 服务家乡代理, 以及路由报文。 本发明不需要外部网元对相应协议的支持, 无需升级和替换设备, 降低了成本; 同时, 釆用业务路由器, 使家乡代理集 群系统对外显示为单系统, 组网简单、 易于维护。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明, 但这只是为便于理解而举的实例, 不应认为本发明的具体实施只局限于这些 说明。 对于本发明所属技术领域的普通技术人员来说, 在不脱离本发明构思 的前提下, 可以做出各种可能的等同改变或替换, 这些改变或替换都应属于 本发明的保护范围。
工业实用性 本发明提供的节点接入家乡代理的方法, 在选择家乡代理为用户提供服 务时, 不需要其他网元对相应协议的支持, 不需要增加额外的信令交互过程, 因而可以减少用户的接入时长, 提高效率; 本发明提供的家乡代理集群系统, 不需要其他网元对相应协议的支持, 无需升级和替换设备, 降低了成本; 同 时, 系统中每增加或减少一个家乡代理, 都不需要增加外部网元, 组网简单, 易于维护; 本发明提供的业务路由器, 使家乡代理集群系统对外显示为单系 统, 组网简单、 易于维护。

Claims

权 利 要 求 书
1、 一种节点接入家乡代理的方法, 所述方法包括:
业务路由器为家乡代理集群系统中的每一个家乡代理分配终端地址池; 所述业务路由器在节点接入家乡代理时确定路由地址, 并根据所述终端 地址池确定该路由地址对应的家乡代理为服务家乡代理; 以及
所述业务路由器将所述节点发来的报文路由到所述服务家乡代理, 以完 成所述节点到所述服务家乡代理的接入。
2、 如权利要求 1所述的方法, 其中, 所述业务路由器在节点接入家乡代 理时确定路由地址的步骤包括:
所述业务路由器解析出节点发来的报文是移动互联网协议 IP信令或代理 移动 IP信令,且所述移动 IP信令或所述代理移动 IP信令中的家乡地址域中 不包含有效的地址,所述业务路由器按照预设算法确定所述报文的路由地址。
3、 如权利要求 2所述的方法, 其中, 所述预设算法为根据所述家乡代理 集群系统的负荷, 选择负荷最轻的家乡代理的动态路由的算法; 或为根据所 述报文的关键字信息进行哈希选择的算法, 或为轮询算法。
4、 如权利要求 1所述的方法, 其中, 所述业务路由器将所述节点发来的 报文路由到所述服务家乡代理的步骤包括:
当所述业务路由器解析出报文是移动 IP信令或代理移动 IP信令, 且所 述移动 IP或所述代理移动 IP信令中的家乡地址域中包含有效的地址, 所述 业务路由器按照所述地址所属的服务家乡代理直接路由至所述服务家乡代 理;
当所述业务路由器解析出报文为隧道封装报文, 且所述报文的目的地址 是所述服务家乡代理地址, 则根据隧道内层 IP的源地址路由至该服务家乡代 理地址所属的服务家乡代理;
当所述业务路由器解析出所述报文的源地址是服务家乡代理地址, 则按 照目的地址路由到互联网、 家乡网络、 承载网络或外地代理; 以及
当所述业务路由器解析出所述报文为来自由互联网或家乡网络的报文, 且报文的目的地址是终端地址, 则按照目的地址路由到所述终端接入的服务 家乡代理。
5、 如权利要求 2-4任一所述的方法, 还包括:
在所述家乡代理集群系统中添加一个家乡代理时, 所述业务路由器为新 添加的家乡代理分配新的终端地址池; 以及
所述业务路由器将所述新添加的家乡代理的终端地址池添加到所述预设 算法的计算结果集中。
6、 如权利要求 2-4任一所述的方法, 还包括:
在所述家乡代理集群系统中删除一个家乡代理时, 所述业务路由器将待 删除的家乡代理的终端地址池从所述预设算法的计算结果集中删除; 以及 所述待删除的家乡代理保留当前在线的会话, 待所有会话结束后, 所述 业务路由器删除所述待删除的家乡代理的终端地址池; 或直接结束所述待删 除家乡代理的当前在线的会话, 所述业务路由器删除所述待删除家乡代理的 终端地址池。
7、 一种家乡代理集群系统, 包含多个家乡代理, 其中, 还包括业务路由 器, 所述业务路由器包括地址管理模块和路由模块,
所述地址管理模块设置成为每一个所述家乡代理分配终端地址池; 所述路由模块设置成在节点接入家乡代理时确定路由地址, 并根据所述 终端地址池确定该路由地址对应的家乡代理为服务家乡代理; 以及将所述节 点发来的报文路由到所述服务家乡代理, 完成所述节点到所述服务家乡代理 的接入。
8、 如权利要求 7所述的家乡代理集群系统, 其中, 所述路由模块设置成 令, 且所述移动 IP信令或所述代理移动 IP信令中的家乡地址域中不包含有 效的地址, 则按照预设算法确定所述报文的路由地址。
9、 如权利要求 7所述的家乡代理集群系统, 其中, 所述路由模块设置成 解析出所述报文是移动 IP信令或代理移动 IP信令,且所述移动 IP或所述代 理移动 IP信令中的家乡地址域中包含有效的地址,则业务路由器按照所述地 址所属的服务家乡代理直接路由至该服务家乡代理;
解析出所述报文为隧道封装报文, 且所述报文的目的地址是所述服务家 乡代理地址, 则根据隧道内层 IP的源地址路由至该服务家乡代理地址所属的 服务家乡代理;
解析出所述报文的源地址是服务家乡代理地址, 则按照目的地址路由到 互联网 /家乡网络、 承载网络或外地代理; 以及
解析出所述报文为来自由互联网 /家乡网络的报文, 且路由目的地址是终 端地址, 则按照目的地址路由到该终端接入的服务家乡代理。
10、 如权利要求 8所述的家乡代理集群系统, 其中, 所述地址管理模块 还设置成:
在所述家乡代理集群系统中添加一个家乡代理时, 为新添加的所述家乡 代理分配新的终端地址池, 并将新添加的所述家乡代理的所述新的终端地址 池添加到所述预设算法的计算结果集中; 和 /或
在所述家乡代理集群系统中删除一个家乡代理时, 将待删除的家乡代理 的终端地址池从所述预设算法的计算结果集中删除, 并删除所述待删除的家 乡代理的终端地址池。
11、 一种业务路由器, 其中, 所述业务路由器应用于家乡代理集群系统 中, 其包括地址管理模块和路由模块,
所述地址管理模块设置成为所述家乡代理集群系统中的每一个家乡代理 分配终端地址池;
所述路由模块设置成在节点接入家乡代理时确定路由地址, 并根据所述 终端地址池确定该路由地址对应的家乡代理为服务家乡代理; 以及将所述节 点发来的报文路由到所述服务家乡代理, 完成所述节点到所述服务家乡代理 的接入。
12、 如权利要求 11所述的业务路由器, 其中, 所述路由模块包括: 第一确定单元, 其设置成解析出所述节点发来的所述报文是移动互联网 协议 IP信令或代理移动 IP信令, 且所述移动 IP信令或所述代理移动 IP信 令中的家乡地址域中不包含有效的地址, 则按照预设算法确定所述报文的路 由地址。
13、 如权利要求 11所述的业务路由器, 其中, 所述路由模块包括: 第一路由单元, 其设置成解析出所述报文是移动 IP信令或代理移动 IP 信令, 且所述移动 IP或所述代理移动 IP信令中的家乡地址域中包含有效的 地址, 则按照所述地址所属的服务家乡代理直接路由至该服务家乡代理; 第二路由单元, 其设置成解析出所述报文为隧道封装报文, 且所述报文 的目的地址是所述服务家乡代理地址, 则根据隧道内层 IP的源地址路由至该 服务家乡代理地址所属的服务家乡代理;
第三路由单元,其设置成解析出所述报文的源地址是服务家乡代理地址, 则按照目的地址路由到互联网 /家乡网络、 承载网络或外地代理; 以及
第四路由单元, 其设置成解析出所述报文为来自由互联网 /家乡网络的报 文, 且路由目的地址是终端地址, 则按照目的地址路由到该终端接入的服务 家乡代理。
14、 如权利要求 12所述的业务路由器, 其中, 所述地址管理模块还设置 成:
在所述家乡代理集群系统中添加一个家乡代理时, 为新添加的所述家乡 代理分配新的终端地址池, 并将新添加的所述家乡代理的所述新的终端地址 池添加到所述预设算法的计算结果集中; 和 /或
在所述家乡代理集群系统中删除一个家乡代理时, 将待删除的家乡代理 的终端地址池从所述预设算法的计算结果集中删除, 并删除所述待删除的家 乡代理的终端地址池。
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