CN101511116B - Method, system and equipment for switching hometown agent in mobile IP domain - Google Patents
Method, system and equipment for switching hometown agent in mobile IP domain Download PDFInfo
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Abstract
The invention provides a method for switching home agent in mobile IP domain, a system and a device, wherein, the method includes steps as follows: receiving a load switch requirement sent by the source home agent or object home agent; sending an indication information to the object home agent, the indication information is used for indicating the object home agent to provide service for the waited-switch mobile node. The method can switch MN registered in the home agent to other home agent in condition of overload in the home agent, maintaining and upgrading, self fault that ensures continuity of MN operation and improve fault-tolerant capability of the network.
Description
Technical field
The present invention relates to communication technical field, changing method, system and the equipment of home agent in particularly a kind of mobile IP territory.
Background technology
Adopt the main frame of Traditional IP technology to use fixed IP addresses to communicate.In communication process, its IP address must remain unchanged, otherwise the communication between the IP main frame will be interrupted.When mobile node (Mobile Node, MN) between different networks when mobile, the IP address will change, conversation continuity can't guarantee.For addressing this problem, (The InternetEngineering Task Force IETF) has proposed mobile IP to the Internet engineering duty group, and this is a kind of mobile management technology based on the IP layer, can make MN when mobile, keep the IP address constant, thereby guarantee professional continuity.
Mobile IP technology requires MN to support Mobile IP agreement, but the protocol stack of many terminals is not supported MIP.For this reason, at the terminal of supporting IPv4 or IPv6, IETF has defined based on network mobility management protocol PMIPv4 (Proxy Mobile IPV4), PMIPv6 respectively, and its purpose is to realize need not the based on network IP mobile management that MN participates in.
Home agent is the key function entity in the mobile IP territory, and wherein, (Localized Mobility Anchor LMA) is the home agent of MN in the PMIPv6 territory to regional mobile anchor point, and HA (Home Agent, home agent) is the home agent of MN in the PMIPv4 territory.Home agent is the route anchor point of MN, and (Mobile Node ' s HomeNetwork Prefix MN-HNP), manages the binding information of MN, keeps the accessibility of MN for MN distributes one or more home network prefix.
Home agent is as the core node in the mobile IP territory, usually load is bigger, owing to overload, maintenance upgrade, failure and other reasons, will cause being registered in all the MN service disconnection on this home agent, influence to network is very big, has a strong impact on the experience property of user in network.
Summary of the invention
The embodiment of the invention provides changing method, system and the equipment of home agent in a kind of mobile IP territory, make under the situations such as, maintenance upgrade excessive, faults itself in home agent load, the MN that is registered on the described home agent can be switched on other the home agent, guarantee the continuity of MN business, improved the fault-tolerant ability of network.
The embodiment of the invention provides the changing method of home agent in a kind of mobile IP territory, comprising:
The load handoff request that reception sources home agent or purpose home agent send;
Send Indication message to described purpose home agent, described Indication message is used to indicate described purpose home agent to provide service for to be switched mobile node.
The embodiment of the invention provides the switching device shifter of home agent in a kind of mobile IP territory, comprising:
The handoff request receiving element is used for the load handoff request that reception sources home agent or purpose home agent send;
The Indication message transmitting element is used for sending Indication message according to described load handoff request to described purpose home agent, and described Indication message is used to indicate described purpose home agent to provide service for to be switched mobile node.
The embodiment of the invention provides the home agent in a kind of mobile IP territory, comprising:
The Indication message receiving element is used to receive the Indication message that proxy gateway sends;
The unit is set up in service, is used for creating or activating according to described Indication message the banding cache of to be switched mobile node, for described to be switched mobile node provides service.
The embodiment of the invention provides the switched system of home agent in a kind of mobile IP territory, comprises the source home agent, proxy gateway, and the purpose home agent, wherein,
Proxy gateway is used for the load handoff request that reception sources home agent or purpose home agent send, and sends Indication message to described purpose home agent;
The purpose home agent is used for creating or activating according to described Indication message the banding cache of to be switched mobile node, for described to be switched mobile node provides service.
The embodiment of the invention is by under the situations such as, maintenance upgrade excessive in source home agent load, faults itself, the MN that is registered in the source home agent is switched on the purpose home agent, provide service by the purpose home agent for the MN that switches, guarantee the continuity of MN business, improved the fault-tolerant ability of network.
Description of drawings
Fig. 1 is the changing method schematic flow sheet of home agent in a kind of mobile IP territory that provides of the embodiment of the invention;
Fig. 2 is the changing method schematic flow sheet of home agent in the another kind of mobile IP territory that provides of the embodiment of the invention;
Fig. 3 is the changing method schematic flow sheet of home agent in the another kind of mobile IP territory that provides of the embodiment of the invention;
Fig. 4 is the changing method schematic flow sheet of home agent in the another kind of mobile IP territory that provides of the embodiment of the invention;
Fig. 5 is the switching device shifter schematic diagram that the embodiment of the invention provides home agent in a kind of mobile IP territory;
Fig. 6 is the switching device shifter schematic diagram that the embodiment of the invention provides home agent in the another kind of mobile IP territory;
Fig. 7 is that the embodiment of the invention provides the home agent schematic diagram in a kind of mobile IP territory;
Fig. 8 is that the embodiment of the invention provides the home agent schematic diagram in the another kind of mobile IP territory;
Fig. 9 is the switched system schematic diagram that the embodiment of the invention provides home agent in a kind of mobile IP territory.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the changing method schematic flow sheet of home agent in a kind of mobile IP territory that provides for the embodiment of the invention, this embodiment has provided the changing method of home agent in a kind of mobile IP territory, comprising:
Step 101: the load handoff request that reception sources home agent or purpose home agent send;
Step 102: send Indication message to described purpose home agent, described Indication message is used to indicate described purpose home agent to provide service for to be switched mobile node.
Need to prove, can comprise opposite end home agent sign, handoff parameter or sync id in the load handoff request.Wherein, when step 101 was specially the load handoff request of reception sources home agent transmission, home agent sign in described opposite end was specially purpose home agent sign; When step 101 was specially the load handoff request that receives the transmission of purpose home agent, home agent sign in described opposite end was specially source home agent sign
Need to prove that in the PMIPv6 system, described source home agent and purpose home agent are specially regional mobile anchor point LMA; In the PMIPv4 system, described source home agent and purpose home agent are specially home agent HA; At third generation partner program (3rd GenerationPartnership Project, 3GPP) in the network, the function of described source home agent and purpose home agent can (Public Data Network Gateway P-GW) realizes by the public data gateway.
The embodiment of the invention provides the changing method of home agent in a kind of mobile IP territory, make when the local agency is transshipped or service can't normally be provided, the MN of registration can be switched on other the home agent, guaranteed the continuity of MN business simultaneously, improved the fault-tolerant ability of network.
Switch to example and be elaborated to carry out home agent in the PMIPv6 system below.
As shown in Figure 2, the changing method schematic flow sheet of home agent in the another kind of mobile IP territory that provides for the embodiment of the invention, this embodiment has provided the changing method of home agent in a kind of mobile IP territory, comprising:
Step 201: source LMA and purpose LMA carry out handover negotiation optimization, and content comprises the load capacity parameter, whether allow information such as switching;
Concrete, determining to be switched purpose LMA by static configuration or dynamic selection method, source LMA sends to purpose LMA and switches query requests, and purpose LMA confirms whether can accept switching in query response message.
In one embodiment, when system start-up, a LMA handover configurations table promptly is set, the running state information that comprises LMA in the table,, because can't providing when service for the MN of registration, a variety of causes the MN in self registration can be switched on other lower LMA of load in the table as the partial L MA in the described allocation list;
In one embodiment, a controller is set, the running status of LMA in the real-time acquisition system when certain source LMA overload or fault, is selected certain purpose LMA, notification source LMA or purpose LMA, and the MN that source LMA is gone up registration switches on the purpose LMA;
In one embodiment, dispose two LMA LMA that backups each other, because a variety of causes can't provide service for the MN of registration the time, described LMA can switch on another mutually redundant LMA at the MN of self registration as one of them LMA.
Need to prove, in real network, can phase mutually synchronization MN information between a plurality of LMA, guarantee that purpose LMA can successfully take over source LMA and provide service for MN.Synchronous MN information when described LMA can normally move in the handover negotiation optimization process or in system is concrete:
In one embodiment, when system start-up, a LMA handover configurations table is set promptly or a plurality of adjacent LMA forms LMA pool, the nodal information that all LMA in the table or among the LMA pool can other LMA of phase mutually synchronization;
In one embodiment, dispose two LMA LMA that backups each other, mutually the node status information of synchronization counterpart;
In one embodiment, when in the handover negotiation optimization process, behind definite purpose LMA, purpose LMA can be in the handover negotiation optimization process node status information of synchronisation source LMA.
What need further specify is that this step is an optional step, in the specific implementation, can directly switch without handover negotiation optimization.For example, can force certain LMA to switch to another LMA by controller as source LMA.
Step 202: source LMA initiates to switch, to Mobile Access Gateway (Mobility Access Gateway, MAG) initiate the load handoff request, can carry one or more purpose LMA signs in the load handoff request, described sign can comprise IP address or qualified domain name (Fully Qualified Domain Name, FQDN) etc., can also carry following parameter in the described request:
1. handoff parameter (if do not carry this parameter can not give tacit consent to expression all switch)
I all switches
Be about to switch on the purpose LMA as all nodes of home agent with source LMA among the described MAG.
II partly switches
I specifies percentage or the quantity of the MN that needs switching
Ii specifies the user who satisfies specified conditions switched and (for example adopts certain wireless access technology (Radio Access technology, RAT) all users of Jie Ruing)
Iii specifies and switches one or more specific MN, and can carry the sign of corresponding described specific MN this moment
III switch reasons (apparatus overload, OAM (Operation AdministrationMaintenance, operation management maintain), fault, the unknown ...)
2. sync id is used to indicate whether carried out the MN state synchronized between source LMA and the purpose LMA.
Step 203:MAG sends load handover acknowledge message to source LMA, notification source LMA accepts or refusal load handoff request, if accept then show that MAG prepares to initiate follow-up switching flow, if refusal, then source LMA ends this switching flow, the switchover policy of making a strategic decision again;
The list of bindings of the MN that step 204:MAG locking is to be switched (Binding Update List, BUL), in the handoff procedure of step 204-208, the temporary incident that can cause the BUL change of MN of MAG;
Step 205:MAG initiates the service handoff request to purpose LMA, can carry the address of source LMA, and the load handoff request that sends according to source LMA in the step 202, carry the parameters such as information of the MN of corresponding handoff parameter, sync id, switch reasons and switching, described parameter is optional parameters;
Need to prove that the described Indication message among the embodiment of Fig. 1 correspondence is specially the service handoff request in the present embodiment.
Need to prove, if purpose LMA is the node status information of synchronisation source LMA not, at this moment, can carry to be switched nodal information in the service handoff request, be used to indicate purpose LMA to create the banding cache of node, for described node provides service according to described to be switched nodal information.
Step 206: purpose LMA creates or activates corresponding banding cache, and provides bidirectional tunnel between service or establishment and the source LMA as home agent for MN;
Need to prove, if then there has been the banding cache of to be switched node in the node status information of source LMA that purpose LMA is synchronous among the purpose LMA, this moment, purpose LMA can activate the banding cache of to be switched node, and the route of announcement adapter, provide service as home agent for MN; If purpose LMA is the node status information of synchronisation source LMA not, then purpose LMA can obtain to be switched nodal information from MAG, creates the banding cache of to be switched node, and the route of announcement adapter, for to be switched mobile node provides service.
Need to prove that purpose LMA comprises dual mode for to be switched mobile node provides service: mode one, provide service as home agent for to be switched mobile node, promptly replace the source home agent; Mode two, the bidirectional tunnel between establishment and the source LMA is the bidirectional tunnel between establishment and the source LMA.Wherein, bidirectional tunnel between purpose LMA and the source LMA, data relay service between source LMA and the purpose LMA is provided, makes that the upstream data path of MN is MN-＞purpose LMA-＞source LMA-＞external network, the MN downlink data be external network-＞source LMA-＞purpose LMA-＞MN.External network still consigns to source LMA with the packet of MN like this, and the external network perception is less than the switching of source LMA and target LMA.Communication failure appears as source LMA and MAG for example, source LMA up-downgoing data flow by bidirectional tunnel by purpose LMA transfer.
Step 207: purpose LMA sends handover acknowledge message to MAG, the indication switching result.
Need to prove, with Indication message in the step 205 be specially in the present embodiment the service handoff request corresponding, the indication response message be specially handover acknowledge message in the present embodiment.
Step 208:MAG sends handoff completion message to source LMA, the indication switching result.
The state of step 209:MAG release BUL, if in the handoff procedure, the MAG buffer memory incident that can cause the BUL of MN to change, switch finish after, the BUL that MAG revises MN also reports purpose LMA, guarantee MN information between MAG and the LMA synchronously.
Need to prove that when carrying switching node quantity in the load handoff request that source LMA sends, correspondingly, the node that MAG can select respective numbers according to configured strategy in the step 204 is as to be switched MN, and lock the BUL of described to be switched MN; In the step 205, MAG can also carry the information of described to be switched MN in the service handoff request that purpose LMA sends, and the indication purpose LMA provide service for described to be switched MN; In the step 208, can also carry the sign of described to be switched MN in the described handoff request.
Need to prove, in the step 206, purpose LMA can create and source LMA between bidirectional tunnel, correspondingly, also comprise after the step 208: the BCE of the MN that source LMA revise to switch, set up path with the up-downgoing data of purpose LMA.
The embodiment of the invention provides the changing method of home agent in a kind of mobile IP territory, in the PMIPv6 territory, described home agent is specially LMA, when the node that can't continue as registration as source LMA provides service, source LMA sends the load handoff request to MAG, the sign of carrying purpose LMA in the described load handoff request, and indication MAG switches to the node of described source LMA service on the purpose LMA, guarantee the continuity of MN session, improved the fault-tolerant ability of network.
As shown in Figure 3, the changing method schematic flow sheet of home agent in the another kind of mobile IP territory that provides for the embodiment of the invention, this embodiment has provided the changing method of home agent in a kind of mobile IP territory, comprising:
Step 301: determine to be switched purpose LMA by static configuration or Dynamic Selection mode, source LMA and purpose LMA carry out handover negotiation optimization, and this step is identical with step 201, does not repeat them here;
Step 302: purpose LMA sends the load handoff request to MAG, can carry source LMA sign, handoff parameter, sync id in the load handoff request;
Need to prove, when handoff parameter switches for part and comprises to be switched node identification, can not carry LMA sign in source in the load handoff request.
The BUL of the MN that step 303:MAG locking is to be switched, in the handoff procedure of step 303-307, the temporary incident that can cause the BUL change of MN of MAG;
Step 304:MAG sends load handover acknowledge message to purpose LMA, and notice purpose LMA accepts or refusal load handoff request.If accept then show that MAG prepares to initiate follow-up switching flow, continue execution in step 305, if refusal, then purpose LMA ends this switching flow, the switchover policy of making a strategic decision again;
Need to prove that step 304 can occur in before the step 303, promptly after MAG receives the load handoff request, lock the BUL of to be switched MN.
Need to prove that the described Indication message among the embodiment of Fig. 1 correspondence is specially load handover acknowledge message in the present embodiment.
Step 305: purpose LMA creates or activates corresponding banding cache, and for MN provides service, method of service comprises two kinds: mode one provides service as home agent for MN; Mode two, the bidirectional tunnel between establishment and the source LMA.
Step 306: purpose LMA sends the load handoff completion message to MAG, the indication switching result.
Need to prove that to be specially load handover acknowledge message in the present embodiment corresponding with Indication message in the step 304, the indication response message is specially the load handoff completion message in the present embodiment.
Step 307:MAG or purpose LMA send the load handoff completion message to source LMA, the indication switching result.
The state of step 308:MAG release BUL, if in the handoff procedure, the MAG buffer memory incident that can cause the BUL of MN to change, switch finish after, the BUL that MAG revises MN also reports purpose LMA, guarantee MN information between MAG and the purpose LMA synchronously.
Need to prove, in the step 305, purpose LMA can create and source LMA between bidirectional tunnel, correspondingly, also comprise after the step 307: the BCE of the MN that source LMA revise to switch, set up path with the up-downgoing data of purpose LMA.
The embodiment of the invention provides the changing method of home agent in a kind of mobile IP territory, wherein, described mobile IP territory is specially the PMIPv6 territory, described home agent is specially LMA, when the node that can't continue as registration as source LMA provided service, purpose LMA sent the load handoff request to MAG, and the node of described source LMA service is switched on the purpose LMA, guarantee the continuity of MN session, improved the fault-tolerant ability of network.
As shown in Figure 4, for the embodiment of the invention provides the changing method schematic flow sheet of home agent in the another kind of mobile IP territory, described mobile IP territory is specially the PMIPv4 territory, and correspondingly, home agent is HA, and described changing method comprises:
Step 401: determine to be switched purpose HA by static configuration or Dynamic Selection mode, source HA and purpose HA carry out handover negotiation optimization, and this step is similar to step 201, does not repeat them here;
Step 402: (Proxy Mobility Agent PMA) sends the load handoff request to source HA, can carry purpose HA sign, handoff parameter, sync id in the load handoff request to acting on behalf of the home agent services device;
Step 403:PMA sends load handover acknowledge message to source HA, whether notification source HA accepts described load handoff request, if accept then show that PMA prepares to initiate follow-up switching flow, if refusal, then source HA ends this switching flow, the switchover policy of making a strategic decision again;
The BUL of the MN that step 404:PMA locking is to be switched, in the handoff procedure of step 404-408, the temporary incident that can cause the BUL change of MN of PMA;
Step 405:PMA initiates the service handoff request to purpose HA, carry the address of source HA, and the load handoff request that sends according to source HA in the step 402, the parameters such as information of carrying the MN of corresponding handoff parameter, sync id, switch reasons and switching, described parameter is optional parameters;
Need to prove that the described Indication message among the embodiment of Fig. 1 correspondence is specially the service handoff request in the present embodiment.
Step 406: purpose HA creates or activates corresponding banding cache, and for MN provides service, method of service comprises two kinds: mode one provides service as home agent for MN; Mode two, the bidirectional tunnel between establishment and the source HA.
Step 407: purpose HA sends handover acknowledge message to PMA, the indication switching result.
Need to prove, with Indication message in the step 405 be specially in the present embodiment the service handoff request corresponding, the indication response message be specially handover acknowledge message in the present embodiment.
Step 408:PMA or purpose HA send handoff completion message to source HA, the indication switching result.
The state of step 409:PMA release BUL, if in the handoff procedure, the PMA buffer memory incident that can cause the BUL of MN to change, switch finish after, the BUL that PMA revises MN also reports purpose HA, guarantee MN information between PMA and the purpose HA synchronously.
Need to prove, can initiate switch by purpose HA in the step 402 that correspondingly, the specific implementation embodiment corresponding with Fig. 3 is similar, is not giving unnecessary details at this.The embodiment of the invention provides the changing method of home agent in a kind of mobile IP territory, wherein, described mobile IP territory is specially the PMIPv4 territory, described home agent is specially HA, when the node that can't continue as registration as source HA provides service, the node of described source HA service is switched on the purpose HA, guarantee the continuity of MN session, improved the fault-tolerant ability of network.
Need to prove, whether the handover negotiation optimization between the home agent can be switched by one or more purpose home agent of source home agent transmission message asks backup, and according to the load information that the purpose home agent returns, the purpose home agent of the switching of making a strategic decision.Switching message between purpose home agent and the proxy gateway can realize the demand of the embodiment of the invention by Binding Update request message Binding Refresh Request (BRR) message in the modification MIP agreement owing to there is not existing message to realize in the PMIP agreement.
What need further specify is that in the 3GPP network, the function of home agent can be realized that the function of MAG or PMA can (Serving Gateway S-GW) realizes by gateway by P-GW.
Corresponding with the changing method of home agent in the above-mentioned mobile IP territory, the embodiment of the invention also provides the switched system and the equipment of home agent in the mobile IP territory.
As shown in Figure 5,, comprise and move request receiving element 501 for the embodiment of the invention provides the switching device shifter schematic diagram of home agent in a kind of mobile IP territory, Indication message transmitting element 502, wherein,
Handoff request receiving element 501 is used for the load handoff request that reception sources home agent or purpose home agent send;
Indication message transmitting element 502 is used for sending Indication message according to described load handoff request to described purpose home agent, and described Indication message is used to indicate described purpose home agent to provide service for to be switched mobile node.
As shown in Figure 6, the switching device shifter of home agent further can also comprise in the described mobile IP territory:
Receiving element 507 is replied in indication, is used to receive the indication response message that the purpose home agent sends;
Handoff completion message transmitting element 508 is used for sending handoff completion message to described source home agent;
As shown in Figure 7, for the embodiment of the invention provides home agent schematic diagram in a kind of mobile IP territory, comprise Indication message receiving element 701, unit 702 is set up in service, wherein,
Indication message receiving element 701 is used to receive the Indication message that proxy gateway sends;
Unit 702 is set up in service, is used for creating or activating according to described Indication message the banding cache of to be switched mobile node, for described to be switched mobile node provides service.
Need to prove that in the PMIPv6 system, described proxy gateway is specially MAG; In the PMIPv4 system, described proxy gateway is specially PMA; In the 3GPP network, the function of described proxy gateway is specifically realized by S-GW.
As shown in Figure 8, the home agent in the described mobile IP territory further comprises:
Handover negotiation optimization unit 703 is used for carrying out handover negotiation optimization with the source home agent;
Lock unit 704 is used for the mobile node state information of synchronisation source home agent node;
Handoff request transmitting element 705 is used for sending the load handoff request to proxy gateway.
Service is set up unit 702 and is further comprised:
Module 7021 is set up in first service, is used for creating or activating according to described Indication message the banding cache of described to be switched mobile node, provides service as home agent for described to be switched mobile node
Module 7022 is set up in second service, is used for creating or activating according to described Indication message the banding cache of described to be switched mobile node, sets up the bidirectional tunnel that is connected with the source home agent.
As shown in Figure 9,, comprise source home agent 901 for the embodiment of the invention provides the switched system schematic diagram of home agent in a kind of mobile IP territory, proxy gateway 902, purpose home agent 903, wherein,
Proxy gateway 902 is used for the load handoff request that reception sources home agent or purpose home agent send, and sends Indication message to described purpose home agent;
Purpose home agent 903 is used for creating or activating according to described Indication message the banding cache of to be switched mobile node, for described to be switched mobile node provides service.
The embodiment of the invention provides changing method, system and the equipment of home agent in a kind of mobile IP territory, make under the situations such as home agent is excessive in load, maintenance upgrade, faults itself, the MN that is registered on the described home agent can be switched on other the home agent, guarantee the continuity of MN business, improved the fault-tolerant ability of network.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium.Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (19)
1. the changing method of home agent in the mobile IP territory is characterized in that, comprising:
The load handoff request that reception sources home agent or purpose home agent send;
Send Indication message to described purpose home agent, described Indication message is used to indicate described purpose home agent to provide service for to be switched mobile node.
2. the method for claim 1 is characterized in that, also comprises before the load handoff request that described reception sources home agent or purpose home agent send:
Described source home agent and described purpose home agent carry out handover negotiation optimization.
3. the method for claim 1 is characterized in that, also comprises:
Described source home agent and the synchronous mobile node state information of described purpose home agent.
4. the method for claim 1 is characterized in that, comprises opposite end home agent sign, handoff parameter or sync id in the described load handoff request.
5. as the arbitrary described method of claim 1-4, it is characterized in that, also comprise after the load handoff request that reception sources home agent or purpose home agent send:
Lock the list of bindings of described to be switched mobile node;
The incident that storage can cause the list of bindings of described to be switched mobile node to change.
6. method as claimed in claim 5 is characterized in that, also comprises after described purpose home agent sends Indication message:
Receive the indication response message that the purpose home agent sends;
Send handoff completion message to described source home agent.
7. method as claimed in claim 6 is characterized in that, also comprises after described source home agent sends handoff completion message:
The list of bindings of the described to be switched mobile node of release;
Revise the list of bindings of described to be switched mobile node according to described incident, and amended list of bindings is reported the purpose home agent.
8. as the arbitrary described method of claim 1-4, it is characterized in that described purpose home agent specifically comprises for to be switched mobile node provides service:
The banding cache of described to be switched mobile node is created or activated to the purpose home agent, provides service as home agent for described to be switched mobile node; Or
The banding cache of described to be switched mobile node is created or activated to the purpose home agent, sets up the bidirectional tunnel that is connected with the source home agent.
9. method as claimed in claim 8 is characterized in that, the banding cache of described to be switched mobile node is created or activated to described purpose home agent, sets up the bidirectional tunnel that is connected with the source home agent and also comprise afterwards:
The source home agent is revised the banding cache of to be switched mobile node.
10. the method for claim 1 is characterized in that, in the PMIPv6 system, described source home agent and purpose home agent are specially regional mobile anchor point LMA; Or in the PMIPv4 system, described source home agent and purpose home agent are specially home agent HA; Or in third generation partner program 3GPP network, the function of described source home agent and purpose home agent is realized by public data gateway P-GW.
11. the switching device shifter of home agent is characterized in that in the mobile IP territory, comprising:
The handoff request receiving element is used for the load handoff request that reception sources home agent or purpose home agent send;
The Indication message transmitting element is used for sending Indication message according to described load handoff request to described purpose home agent, and described Indication message is used to indicate described purpose home agent to provide service for to be switched mobile node.
12. switching device shifter as claimed in claim 11 is characterized in that, also comprises:
Receiving element is replied in indication, is used to receive the indication response message that the purpose home agent sends;
The handoff completion message transmitting element is used for sending handoff completion message to described source home agent after switching is finished.
13. switching device shifter as claimed in claim 12 is characterized in that, also comprises:
Lock cell is used for the list of bindings of the described to be switched mobile node of after receiving described load handoff request locking;
Memory cell is used for when the list of bindings of described to be switched mobile node is in the lock state, the incident that storage can cause the list of bindings of described to be switched mobile node to change;
Separate lock unit, be used for the list of bindings of the described to be switched mobile node of after switching is finished release;
Modification reports the unit, is used for revising according to the described incident of cell stores the list of bindings of described to be switched mobile node, and amended list of bindings is reported the purpose home agent.
14. the home agent in the mobile IP territory is characterized in that, comprising:
The Indication message receiving element is used to receive the Indication message that proxy gateway sends;
The unit is set up in service, is used for creating or activating according to described Indication message the banding cache of to be switched mobile node, for described to be switched mobile node provides service.
15. home agent as claimed in claim 14 is characterized in that, described service is set up the unit and is comprised:
Module is set up in first service, is used for creating or activating according to described Indication message the banding cache of described to be switched mobile node, provides service as home agent for described to be switched mobile node;
Module is set up in second service, is used for creating or activating according to described Indication message the banding cache of described to be switched mobile node, sets up the bidirectional tunnel that is connected with the source home agent.
16. home agent as claimed in claim 14 is characterized in that, also comprises:
The handoff request transmitting element is used for sending the load handoff request to proxy gateway.
17. home agent as claimed in claim 14 is characterized in that, also comprises:
The handover negotiation optimization unit is used for carrying out handover negotiation optimization with the source home agent.
18. home agent as claimed in claim 14 is characterized in that, also comprises:
Lock unit is used for the mobile node state information of synchronisation source home agent node.
19. the switched system of home agent is characterized in that in the mobile IP territory, comprises the source home agent, proxy gateway, and the purpose home agent, wherein,
Proxy gateway is used for the load handoff request that reception sources home agent or purpose home agent send, and sends Indication message to described purpose home agent;
The purpose home agent is used for creating or activating according to described Indication message the banding cache of to be switched mobile node, for described to be switched mobile node provides service.
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| CN101511116B true CN101511116B (en) | 2011-04-13 |
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| CN104378784A (en) * | 2014-11-05 | 2015-02-25 | 工业和信息化部电子第五研究所 | Data forwarding method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101060692A (en) * | 2006-04-18 | 2007-10-24 | 华为技术有限公司 | A switching method and system for wireless evolution network |
| US20070248054A1 (en) * | 2006-04-21 | 2007-10-25 | National Tsing Hua University | Method for reconfiguring mobility platform, and device applying the method |
| CN101072425A (en) * | 2006-05-11 | 2007-11-14 | 华为技术有限公司 | Wireless evolution network switching method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101060692A (en) * | 2006-04-18 | 2007-10-24 | 华为技术有限公司 | A switching method and system for wireless evolution network |
| US20070248054A1 (en) * | 2006-04-21 | 2007-10-25 | National Tsing Hua University | Method for reconfiguring mobility platform, and device applying the method |
| CN101072425A (en) * | 2006-05-11 | 2007-11-14 | 华为技术有限公司 | Wireless evolution network switching method and system |
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