CN101651941B - Home agent clustering system and deployment method thereof - Google Patents

Home agent clustering system and deployment method thereof Download PDF

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Publication number
CN101651941B
CN101651941B CN2009101901095A CN200910190109A CN101651941B CN 101651941 B CN101651941 B CN 101651941B CN 2009101901095 A CN2009101901095 A CN 2009101901095A CN 200910190109 A CN200910190109 A CN 200910190109A CN 101651941 B CN101651941 B CN 101651941B
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home agent
address
message
service
home
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CN101651941A (en
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金仁康
钮远
王霞
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2010/073200 priority patent/WO2011026355A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing 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
    • H04W8/08—Mobility data transfer
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]

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  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a home agent clustering system and a deployment method thereof, wherein the deployment method comprises the process of accessing nodes into home agents and comprises the following processing steps: a service router distributes terminal address pools for each home agent of the home agent clustering system; the service router determines routing addresses when the nodes are accessed to the home agents and determines that the home agents which correspond to the routing addresses are service home agents according to the terminal address pools; and the service router routes messages sent by the nodes to the service home agents so as to complete access from the nodes to the service home agents. The invention can reduce the networking difficulty of the home agent clustering system and the establishment cost of the home agent clustering system.

Description

A kind of home agent clustering system and dispositions method thereof
Technical field
The present invention relates to the communications field, especially relate to a kind of home agent clustering system and dispositions method thereof in the mobile IP field of GSM.
Background technology
Mobile IP technology and proxy-mobile IP technology are widely used in moving communicating field.Mobile IP technology and proxy-mobile IP technology relate to following system: portable terminal, Foreign Agent (ForeignAgent), home agent (Home Agent), authenticating and charging authoring system (AAA).
Often there are single system or two kinds of deployment way of cluster in existing home agent system.
The single system deployment way promptly only comprises a home agent in the home agent system, as shown in Figure 1.The power system capacity of single system deployment way is little, and autgmentability is poor, seldom is applied in the Commercial deployment now.
For the shortcoming that solves the single system deployment has proposed the clustered deploy(ment) mode, comprise several single systems in the existing group system, the external public address of each single system, externally visible.In the existing clustered deploy(ment) mode; Because cluster externally presents a plurality of home agent; Therefore need to select the centralized control point of a home agent as load sharing; Promptly need a network element node identification and distribute which user to be linked into which home agent, realize that the user is at the inner load sharing of group system.User's distribution technique has a variety of, is typically agreements such as RFC4433,3GPP2-X.S0011-002-D.
There are some shortcomings in existing clustered deploy(ment) mode; At first; Need to select the centralized control point of a home agent as load sharing, centralized control point needs the support of ext nal network element corresponding protocol when adopting the dynamic home agent choice of technology and distribute home agent to the user service to be provided.Corresponding protocol can't be supported in a lot of old terminals in the existing network, also can't be upgraded to the version that can support corresponding protocol, for operator, disposes group system and need eliminate used equipment, and cost is too high, has increased the misgivings of operator's deployment group system.
Secondly, because the restriction of home agent itself can't shield other home agent; Therefore all home agent are still externally visible, and networking is complicated, in this home agent clustering system; Every increase or reduce by a node; All need ext nal network element, the Authentication Authorization server (AAA) that for example charges, Foreign Agent network elements such as (FA) are done corresponding change, and the networking complexity is high.
Summary of the invention
The invention provides a kind of home agent clustering system, can reduce cost, reduce the networking difficulty.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of dispositions method of home agent clustering system comprises that node inserts the process of home agent, and the process that said node inserts home agent comprises following treatment step:
A1, business router are each the home agent distributing terminals address pool in the home agent clustering system;
A2, said business router are confirmed routing address when node inserts home agent, and confirm that according to said terminal address pond the corresponding home agent of this routing address is the service home agent;
A3, said business router are routed to said service home agent with the node message sent, accomplish the access of node to said service home agent.
In a kind of embodiment of the dispositions method of said home agent clustering system; In steps A 2; Said business router is confirmed routing address as follows when node inserts home agent: it is Mobile IP signaling or Proxy Mobile IP signaling that business router parses the node message sent; And do not comprise effective address in the Home Address territory in Mobile IP signaling or the Proxy Mobile IP signaling, said business router is confirmed the routing address of said message according to preset algorithm.
In a kind of embodiment of the dispositions method of said home agent clustering system, said preset algorithm is the load according to the home agent system, selects the algorithm of the dynamic routing of the lightest home agent of load; Or for the keyword message according to message carries out the algorithm that Hash is selected, or be polling algorithm.
In a kind of embodiment of the dispositions method of said home agent clustering system, behind the node access service home agent, route message as follows:
When business router parses message is Mobile IP signaling or Proxy Mobile IP signaling; And comprise effective address in the Home Address territory in Mobile IP or the Proxy Mobile IP signaling, said business router is routed directly to said service home agent according to the service home agent under the said address;
When said business router parses message is the tunnel encapsulation message, and the destination address of message is the service hometown-agent-address, then routes to the service home agent under this address according to the source address of tunnel internal layer IP;
The source address that parses message when said business router is the service hometown-agent-address, then is routed to the Internet/home network, bearer network or Foreign Agent according to destination address;
When said business router parses message for coming the message of free the Internet/home network, and the destination address of message is terminal address, then is routed to the service home agent that said terminal is inserted according to destination address.
In a kind of embodiment of the dispositions method of said home agent clustering system, in said home agent clustering system, add a home agent, comprise following treatment step:
B1, said business router are that the new home agent that adds distributes new terminal address pond;
The result of calculation that B2, said business router add the terminal address pond of the home agent of said new interpolation to said preset algorithm is concentrated.
In a kind of embodiment of the dispositions method of said home agent clustering system, home agent of deletion in said home agent clustering system comprises following treatment step:
C1, said business router will be to be deleted the terminal address pond of home agent concentrate deletion from the result of calculation of said preset algorithm;
C2, home agent said to be deleted keep the session of current online, treat all conversation ends after, the terminal address pond of the home agent that said business router deletion is said to be deleted; Or directly finish the said session of waiting to delete the current online of home agent, the said terminal address pond of waiting to delete home agent of said business router deletion.
The invention also discloses a kind of home agent clustering system; Comprise a plurality of home agent; Also comprise business router; Said business router comprises address administration module, routing module, and said address administration module is used to each the home agent distributing terminals address pool in the home agent clustering system; Said routing module is used for when node inserts home agent, confirming routing address, and confirms that according to said terminal address pond the corresponding home agent of this routing address is the service home agent; Said routing module is used for the node message sent is routed to said service home agent, accomplishes the access of node to said service home agent.
In a kind of home agent clustering system disclosed by the invention; It is Mobile IP signaling or Proxy Mobile IP signaling that said routing module parses the node message sent; And do not comprise effective address in the Home Address territory in Mobile IP signaling or the Proxy Mobile IP signaling, then confirm the routing address of said message according to preset algorithm.
In a kind of home agent clustering system disclosed by the invention; It is Mobile IP signaling or Proxy Mobile IP signaling that said routing module parses message; And comprise effective address in the Home Address territory in Mobile IP or the Proxy Mobile IP signaling, then business router is routed directly to this service home agent according to the service home agent under the address; It is the tunnel encapsulation message that said routing module parses message, and the destination address of message is the service hometown-agent-address, then routes to the service home agent under this address according to the source address of tunnel internal layer IP; The source address that said routing module parses message is the service hometown-agent-address, then is routed to the Internet/home network, bearer network or Foreign Agent according to destination address; Said routing module parses message for coming the message of free the Internet/home network, and the route destination address is terminal address, then is routed to the service home agent that this terminal is inserted according to destination address;
In a kind of home agent clustering system disclosed by the invention; When in said home agent clustering system, adding a home agent; The home agent that said address administration module is used to new interpolation distributes new terminal address pond, and the result of calculation that said preset algorithm is added in the terminal address pond of the home agent of said new interpolation to is concentrated.
In a kind of home agent clustering system disclosed by the invention; When in said home agent clustering system, deleting a home agent; Said address administration module is used for deletion is concentrated from the result of calculation of said preset algorithm in the terminal address pond of home agent to be deleted, and the terminal address pond of deleting this home agent.
Compared with prior art, beneficial effect of the present invention is:
The present invention gives each the home agent distributing terminals address pool in the home agent clustering system through configuration service router in home agent clustering system by business router, the service home agent that selection and definite node insert, and route message.The present invention does not need the support of ext nal network element to respective protocol, need not upgrading and replacement equipment, has reduced cost; Simultaneously, adopt business router, make home agent clustering system externally be shown as single system, networking is simple, be easy to safeguard.
Description of drawings
Fig. 1 has exemplarily described home agent single system deployment way;
Fig. 2 has exemplarily described existing home agent clustering system deployment way;
Fig. 3 has exemplarily described home agent clustering system deployment way of the present invention;
Fig. 4 has exemplarily described home agent clustering system of the present invention.
Embodiment
Contrast accompanying drawing below and combine embodiment that the present invention is further elaborated:
For embodying inventive concept of the present invention more clearly, at first existing home agent clustering system deployment way is analyzed:
As shown in Figure 2, existing home agent clustering system deployment way comprises a plurality of home agent.In the existing home agent clustering system, terminal use's access network comprises following treatment step:
Step 201, the mobile phone users access network sends the register requirement that moves IP through Foreign Agent to the centralized control point home agent system 1 of load sharing;
Step 202; A home agent system is selected according to this group system situation by home agent system 1; Like the home agent system of home agent 2 as this terminal use's access; Home agent system 1 responds the registration reply that the terminal use moves IP, refuses the request that this terminal use inserts session, and recommends home agent 2 to insert the home agent of session as this;
Step 203, after the terminal use received the refusal request of home agent, discovery home agent 1 had been recommended new home agent 2 for it, and the terminal use sends register requirement to the home agent 2 that moves IP once more, and request inserts;
Step 204, home agent 2 receiving terminal registration request from user;
Step 205, the Signalling exchange of terminal use and home agent, message forwarding etc. carries out through home agent 2, and home agent 2 provides service for this terminal.
Analyze above step; Can find; In step 202, home agent 1 is as the centralized control point of load sharing, according to the situation of this group system; When selecting home agent 2 to the user service to be provided, other network elements of dynamic home agent Technology Need of this selection are the corresponding protocol support at mobile node (MN), Foreign Agent (FA), terminal for example.
In step 202; Home agent 1 is as the centralized control point of load sharing, distributes home agent 2 to the terminal use service to be provided, and needs to respond the registration reply that the terminal use moves IP; And recommend home agent 2 to give the terminal use; After the terminal use receives refusal request and recommendation, send new request, extra Signalling exchange is arranged between this to the home agent of being recommended 2; And these Signalling exchanges are not the agreement on the basis that is with Mobile IP, and this requires network element in the home agent clustering system to the support of respective protocol; Simultaneously, these extra signalling interactive process can increase user's access duration, and efficient is lower.
In the existing home agent system, need ext nal network element to support corresponding protocol, but a lot of old equipment can't be supported corresponding protocol in the existing network, set up home agent clustering system and need eliminate old equipment, cost is high.
In step 203 and step 204, in existing home agent clustering system, a centralized control point as load sharing is arranged; But this control point is because the restriction of function own; Can't shield other home agent, so the address of all home agent is still externally visible, this just makes the networking of home agent clustering system comparatively complicated; Every increase or reduce by a home agent; All need ext nal network element, the Authentication Authorization server (AAA) that for example charges, Foreign Agent network elements such as (FA) are done corresponding change, and networking is complicated.
The home agent clustering system dispositions method of an embodiment of the present invention comprises that mainly node inserts the process of home agent.
The process that node inserts home agent mainly comprises following treatment step:
A1, business router are each the home agent distributing terminals address pool in the home agent cluster;
A2, business router are confirmed routing address when node inserts home agent, and confirm that according to the terminal address pond the corresponding home agent of this routing address is the service home agent;
A3, business router are routed to the service home agent with the node message sent, accomplish the access of node to the service home agent.
In steps A 1; Business router is given each the home agent distributing terminals address pool in the home agent clustering system; Because it is not overlapping to distribute to the terminal address pond of each home agent, thus just can judge its corresponding home agent through terminal address, convenient, fast.
In steps A 2; Business router is confirmed routing address as follows when node inserts home agent: it is Mobile IP signaling or Proxy MobileIP signaling that business router parses the node message sent; And do not comprise effective address in the Home Address territory in Mobile IP signaling or the Proxy Mobile IP signaling, then business router is confirmed the routing address of signaling according to preset algorithm.
Preset algorithm can be the load according to the home agent system, selects the dynamic routing algorithm of the lightest home agent of load; Also can be the algorithm that carries out the Hash selection according to the keyword message of signaling, also can be polling algorithm, can also be other
The home agent clustering system dispositions method of an embodiment of the present invention also comprises the message routing behind the node access service home agent.
Message routing behind the node access service home agent, carry out as follows:
Mode one; When business router parses message is Mobile IP signaling or Proxy MobileIP signaling; And comprise effective address in the Home Address territory in Mobile IP or the Proxy Mobile IP signaling, then business router is routed directly to this service home agent according to the service home agent under the address;
Mode two is the tunnel encapsulation message when business router parses message, and the destination address of message is the service hometown-agent-address, then routes to the service home agent under this address according to the source address of tunnel internal layer IP;
Mode three, the source address that parses message when business router is the service hometown-agent-address, then is routed to the Internet/home network, bearer network or Foreign Agent according to destination address;
Mode four, when business router parses the message of the free the Internet/home network of message, and the route destination address is terminal address, then is routed to the service home agent that this terminal is inserted according to destination address.
External network comprises the Internet, home network, bearer network etc.
At the multiple routing mode of the inner use of home agent clustering system; The inside that makes home agent clustering system Data transmission apace still when holding a plurality of home agent; Improve the extensibility of home agent clustering system, enlarged the capacity of home agent clustering system.
Can find out that from the mode of business router route message above-mentioned business router can make whole home agent clustering system externally be shown as a single system, networking is simple, easy to operate, be easy to safeguard.
As shown in Figure 3, terminal use's access network may further comprise the steps:
Step 301; Accessing user terminal to network; Mobile IP or Proxy Mobile IP operation are used in request; The terminal use sends Mobile IP register requirement or Proxy Mobile IP register requirement to business router through Foreign Agent, and the source address of this request message comprises the foreign agent address of user terminal address, process, the information of bearer network address, but does not comprise effective address in the Home Address territory of said message;
Step 302; It is Mobile IP signaling or ProxyMobile IP signaling that business router parses the described request message; And do not comprise effective address in the Home Address territory of message, then business router is selected a home agent according to preset algorithm, and the home agent that this message routing is extremely selected; The home agent that is chosen is handled this message; And accept the user and insert at this local agency plant, for user terminal distributes effective address, Home Address territory, this home agent becomes the service home agent of this node;
Step 303; The response message that the service home agent sends request message is to user terminal, and the destination address of this response message is the source address of request message, and this response message arrives business router; Business router routes to Foreign Agent according to routing mode three with this response message; And deliver to user terminal by Foreign Agent, after the terminal use receives response message, insert successfully;
Step 304; The destination address that the terminal use is sent to the service message between the Internet/home network is the Internet/home network; The service message that the terminal use sends is sent to Foreign Agent earlier with the form of reverse message as required; Foreign Agent is sent to business router after it is encapsulated as the reverse tunnel encapsulated message; This reverse tunnel encapsulated message needs after home agent is handled, to be sent to the Internet, so the source address of this message tunnel internal layer IP comprises the address of the home agent of user's access;
Step 305, business router route to the home agent that the user inserts according to routing mode two with said terminal reverse tunnel encapsulated message, and this home agent carries out processing such as decapsulation, compression, QoS and charging to the reverse tunnel encapsulated message;
Step 306, the home agent service message after with decapsulation routes to the Internet/home network that its terminal use needs information interchange according to routing mode three; Also can be routed directly to the purpose network without business router;
Step 307 is issued the message of end-user service from the Internet/home network, and its destination address is the terminal use address, and this message arrives business router, business router inserts this message routing according to routing mode four to the terminal use home agent earlier;
Step 308; Home agent carries out this message to be sent to business router after the forward tunnel encapsulation; Business router routes to Foreign Agent according to routing mode three with the forward tunnel encapsulated message; After Foreign Agent is separated tunnel encapsulation, message is forwarded to the terminal use, also can be routed directly to the purpose network without business router.
Can know by step 303; Business router has directly selected a home agent for the terminal use service to be provided according to preset algorithm; Do not need the dynamic home agent technology, do not need the cooperation of other ext nal network element nodes and the support of respective protocol yet, owing to do not need the support of ext nal network element respective protocol; Need not replacement or upgrading ext nal network element, reduced operation cost.
Can also know that by step 303 business router directly distributes selected home agent to the terminal use service to be provided, and does not need extra non-basic Mobile IP signaling mutual; Also just need not of the support of other ext nal network element to non-basic Mobile IP signaling agreement; Simultaneously, owing to do not need extra Signalling exchange, shortened user's access duration; Improve efficient, also practiced thrift the inner resource of group system.
In home agent clustering system, add a home agent, comprise following treatment step:
B1, business router are that the new home agent that adds distributes new terminal address pond;
The result of calculation that B2, business router add the terminal address pond of the home agent of said new interpolation to preset algorithm is concentrated.
Preset algorithm what calculate is a terminal address pond, corresponding to a home agent, the result of calculation collection of preset algorithm refer to this preset algorithm the set that constitutes of the terminal address pond that might calculate.
For example, a local comprises HA-1 for group system, HA-2, three home agent of HA-3; Corresponding terminal address pond is respectively HA-1ad, HA-2ad, HA-3ad; The terminal address pond that preset algorithm calculates only possibly be HA-1ad, HA-2ad, among the HA-3ad one; HA-1ad then, HA-2ad, HA-3ad have constituted the result of calculation collection of this preset algorithm.
Add a home agent HA-N in above-mentioned home agent clustering system, business router earlier distributes new terminal address pond HA-Nad for HA-N, and it is concentrated to add HA-Nad the result of calculation of preset algorithm to then; The result of calculation of preset algorithm is concentrated and is comprised HA-1ad, HA-2ad, HA-3ad at this moment; Four terminal address ponds of HA-Nad, corresponding to HA-1, HA-2; HA-3, four home agent of HA-N.
Home agent of deletion in home agent clustering system comprises following treatment step:
C1, business router will be to be deleted the terminal address pond of home agent concentrate deletion from the result of calculation of preset algorithm;
C2, home agent to be deleted keep the session of current online; After treating all conversation ends; Current on-line session also can directly be finished in the terminal address pond of the home agent that the business router deletion is to be deleted, the terminal address pond of waiting to delete home agent by the business router deletion then.
At the above-mentioned HA-1 that comprises, HA-2 is in the home agent clustering system of HA-3; The result of calculation collection of the preset algorithm of this group system comprises HA-1ad, HA-2ad, three terminal address ponds of HA-3ad; When therefrom deleting the HA-1 home agent, the terminal address pond HA-1ad that business router is corresponding with HA-1 earlier deletes from the result set of preset algorithm, keeps the session of current online then; After treating all conversation ends, the corresponding terminal address pond HA-1ad of deletion HA-A; Also can directly finish current sessions and delete the corresponding terminal address pond HA-1ad of HA-A.
Can know by above two embodiment, in the present invention, through revising the result of calculation collection of preset algorithm; Need not do corresponding change to ext nal network element; Can realize the modification of home agent clustering system internal structure simply, reduce the networking difficulty, improve networking efficient.
As shown in Figure 4; The invention also discloses a kind of home agent clustering system; Comprise a plurality of home agent; Also comprise business router, said business router comprises address administration module, routing module, and said address administration module is used to each the home agent distributing terminals address pool in the home agent cluster; Said routing module is used for when node inserts home agent, confirming routing address, and confirms that according to said terminal address pond the corresponding home agent of this routing address is the service home agent; Said routing module is used for the node message sent is routed to said service home agent, accomplishes the access of node to said service home agent.
In a kind of home agent clustering system disclosed by the invention; It is Mobile IP signaling or Proxy Mobile IP signaling that said routing module parses the node message sent; And do not comprise effective address in the Home Address territory in Mobile IP signaling or the Proxy Mobile IP signaling, then confirm the routing address of said signaling according to preset algorithm.
In a kind of home agent clustering system disclosed by the invention; It is Mobile IP signaling or Proxy Mobile IP signaling that said routing module parses message; And comprise effective address in the Home Address territory in Mobile IP or the Proxy Mobile IP signaling, then business router is routed directly to this service home agent according to the service home agent under the address; It is the tunnel encapsulation message that said routing module parses message, and the destination address of message is the service hometown-agent-address, then routes to the service home agent under this address according to the source address of tunnel internal layer IP; The source address that said routing module parses message is the service hometown-agent-address, then is routed to the Internet/home network, bearer network or Foreign Agent according to destination address; Said routing module parses message for coming the message of free the Internet/home network, and the route destination address is terminal address, then is routed to the service home agent that this terminal is inserted according to destination address;
In a kind of home agent clustering system disclosed by the invention; When in said home agent clustering system, adding a home agent; The home agent that said address administration module is used to new interpolation distributes new terminal address pond, and the result of calculation that said preset algorithm is added in the terminal address pond of the home agent of said new interpolation to is concentrated.
In a kind of home agent clustering system disclosed by the invention; When in said home agent clustering system, deleting a home agent; Said address administration module is used for deletion is concentrated from the result of calculation of said preset algorithm in the terminal address pond of home agent to be deleted, and the terminal address pond of deleting this home agent.
The present invention gives each the home agent distributing terminals address pool in the home agent clustering system through configuration service router in home agent clustering system by business router, the service home agent that selection and definite node insert, and route message.The present invention does not need the support of ext nal network element to respective protocol, need not upgrading and replacement equipment, has reduced cost; Simultaneously, adopt business router, make home agent clustering system externally be shown as single system, networking is simple, be easy to safeguard.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, but this instance of just lifting for ease of understanding should not think that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can make various possible being equal to and change or replacement, these changes or replacement all should belong to protection scope of the present invention.

Claims (11)

1. the dispositions method of a home agent clustering system is characterized in that, comprises that node inserts the process of home agent, and the process that said node inserts home agent comprises following treatment step:
A1, business router are each the home agent distributing terminals address pool in the home agent clustering system;
A2, said business router are confirmed routing address when node inserts home agent, and confirm that according to said terminal address pond the corresponding home agent of this routing address is the service home agent;
A3, said business router are routed to said service home agent with the node message sent, accomplish the access of node to said service home agent.
2. the dispositions method of home agent clustering system according to claim 1; It is characterized in that; In steps A 2; Said business router is confirmed routing address as follows when node inserts home agent: it is Mobile IP signaling or Proxy MobileIP signaling that business router parses the node message sent; And do not comprise effective address in the Home Address territory in Mobile IP signaling or the Proxy Mobile IP signaling, said business router is confirmed the routing address of said message according to preset algorithm.
3. the dispositions method of home agent clustering system as claimed in claim 2 is characterized in that, said preset algorithm is the load according to the home agent system, selects the algorithm of the dynamic routing of the lightest home agent of load; Or for the keyword message according to message carries out the algorithm that Hash is selected, or be polling algorithm.
4. home agent clustering system dispositions method as claimed in claim 1 is characterized in that, behind the node access service home agent, and route message as follows:
When business router parses message is Mobile IP signaling or Proxy Mobile IP signaling; And comprise effective address in the Home Address territory in Mobile IP or the Proxy Mobile IP signaling, said business router is routed directly to said service home agent according to the service home agent under the said address;
When said business router parses message is the tunnel encapsulation message, and the destination address of message is the service hometown-agent-address, then routes to the service home agent under this address according to the source address of tunnel internal layer IP;
The source address that parses message when said business router is the service hometown-agent-address, then is routed to the Internet/home network, bearer network or Foreign Agent according to destination address;
When said business router parses message for coming the message of free the Internet/home network, and the destination address of message is terminal address, then is routed to the service home agent that said terminal is inserted according to destination address.
5. like claim 2 or 3 described home agent clustering system dispositions methods, it is characterized in that, in said home agent clustering system, add a home agent, comprise following treatment step:
B1, said business router are that the new home agent that adds distributes new terminal address pond;
The result of calculation that B2, said business router add the terminal address pond of the home agent of said new interpolation to said preset algorithm is concentrated.
6. like claim 2 or 3 described home agent clustering system dispositions methods, it is characterized in that home agent of deletion in said home agent clustering system comprises following treatment step:
C1, said business router will be to be deleted the terminal address pond of home agent concentrate deletion from the result of calculation of said preset algorithm;
C2, home agent said to be deleted keep the session of current online, treat all conversation ends after, the terminal address pond of the home agent that said business router deletion is said to be deleted; Or directly finish the said session of waiting to delete the current online of home agent, the said terminal address pond of waiting to delete home agent of said business router deletion.
7. home agent clustering system; Comprise a plurality of home agent; It is characterized in that; Also comprise business router, said business router comprises address administration module, routing module, and said address administration module is used to each the home agent distributing terminals address pool in the home agent clustering system;
Said routing module is used for when node inserts home agent, confirming routing address, and confirms that according to said terminal address pond the corresponding home agent of this routing address is the service home agent;
Said routing module is used for the node message sent is routed to said service home agent, accomplishes the access of node to said service home agent.
8. home agent clustering system as claimed in claim 7; It is characterized in that; It is Mobile IP signaling or Proxy Mobile IP signaling that said routing module parses the node message sent; And do not comprise effective address in the Home Address territory in Mobile IP signaling or the Proxy Mobile IP signaling, then confirm the routing address of said message according to preset algorithm.
9. home agent clustering system as claimed in claim 7; It is characterized in that; It is Mobile IP signaling or Proxy Mobile IP signaling that said routing module parses message; And comprise effective address in the Home Address territory in Mobile IP or the Proxy Mobile IP signaling, then business router is routed directly to this service home agent according to the service home agent under the address;
It is the tunnel encapsulation message that said routing module parses message, and the destination address of message is the service hometown-agent-address, then routes to the service home agent under this address according to the source address of tunnel internal layer IP;
The source address that said routing module parses message is the service hometown-agent-address, then is routed to the Internet/home network, bearer network or Foreign Agent according to destination address;
Said routing module parses message for coming the message of free the Internet/home network, and the route destination address is terminal address, then is routed to the service home agent that this terminal is inserted according to destination address.
10. home agent clustering system as claimed in claim 8; It is characterized in that; When in said home agent clustering system, adding a home agent; The home agent that said address administration module is used to new interpolation distributes new terminal address pond, and the result of calculation that said preset algorithm is added in the terminal address pond of the home agent of said new interpolation to is concentrated.
11. home agent clustering system as claimed in claim 8; It is characterized in that; When in said home agent clustering system, deleting a home agent; Said address administration module is used for deletion is concentrated from the result of calculation of said preset algorithm in the terminal address pond of home agent to be deleted, and the terminal address pond of deleting this home agent.
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