CN101047637B - Method for requiring local mobile anchor point information by access route - Google Patents
Method for requiring local mobile anchor point information by access route Download PDFInfo
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- CN101047637B CN101047637B CN2006100865806A CN200610086580A CN101047637B CN 101047637 B CN101047637 B CN 101047637B CN 2006100865806 A CN2006100865806 A CN 2006100865806A CN 200610086580 A CN200610086580 A CN 200610086580A CN 101047637 B CN101047637 B CN 101047637B
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Abstract
A method of using access router to obtain information of local mobile anchor point includes sending router announcement on interface in domain by local mobile anchor point and carrying information of local mobile anchor point in said announcement then receiving said router announcement by access router for obtaining information of local mobile anchor point. The method for selecting local mobile anchor point to server mobile node is also disclosed.
Description
Technical field
The present invention relates to network communications technology field, be specifically related to a kind of method of selecting the local mobile anchor of service for mobile node.
Background technology
The user can have high mobility in complete IP network, and has plurality of access modes to select, and the mobile management problem is distributed on the different levels of network: network layer, link layer and air interface layer.From sphere of action, can be divided into macro-mobility management, little mobile management and air interface mobile management.Mobility in macro-mobility management is mainly handled on a large scale as the roaming between heterogeneous networks, as user during from a netsurfing to another network, still can be communicated by letter incessantly; Mobile support in little mobile management is mainly handled among a small circle is such as moving of, consolidated network inside; The wireless technology that air interface mobile management and Access Network use is closely related, carries out the handover management of travelling carriage between each base station or access point.In mobile management based on MIP (mobile IP), need main frame support realization mobility in the world, this can improve the complexity of the cost and the terminal protocol stack of terminal undoubtedly.
For this reason, the implementation framework of a kind of NETLMM (based on network local mobile management) has been proposed at present, as shown in Figure 1:
Wherein, local mobile anchor S1 goes up the storage routing iinformation corresponding with each mobile node, and every routing iinformation all points to the router of the current access of mobile node.Being sent to the message that mobile node or mobile node send all can transmit by S1.When a mobile node from a couple in router move to the another one couple in router (such as, mobile node S2 moves to router-A R2 from router-A R1 among the figure) time, new couple in router will send a message to S1, to upgrade the routing iinformation that S1 goes up this mobile node correspondence.Network to the judgement that mobile node moves, possesses special mobility protocol ability and need not mobile node by mobile testing mechanism realization.Before and after moving, the IP that mobile node possesses does not change, thereby guarantees that ongoing session do not interrupt.
A local domain possibility covering whole city of based on network local mobile management system, all portable terminal quantity of service will be very huge in the territory, might be considerably beyond the tenability of single local mobile anchor, list local mobile anchor system has also proposed harsh requirement to the reliability of local mobile anchor equipment, also is not easy to provide differentiated service for different contracted users simultaneously.
For this reason, a plurality of local mobile anchors can be set in the local mobile management domain, and how couple in router obtains the information of each local mobile anchor, and mobile node start or when moving to a new couple in router, how couple in router is chosen as the local mobile anchor of this mobile node service, does not also have effective implementation in the prior art.
Summary of the invention
Main purpose of the present invention provides a kind of method of requiring local mobile anchor point information by access route, so that in the local mobile management domain of a plurality of local mobile anchors is arranged, obtain the information of each local mobile anchor effectively, when mobile node inserts, select the local mobile anchor of service information needed is provided for it.
Another object of the present invention provides a kind of method of selecting the local mobile anchor of service for mobile node, with in the local mobile management domain of a plurality of local mobile anchors is arranged, realize sharing network load, and improve the quantity of the portable terminal of local mobile management domain support.
For this reason, the invention provides following technical scheme:
A kind of method of requiring local mobile anchor point information by access route said method comprising the steps of:
Send router advertisement on A, the local mobile anchor interface in the territory, and in this announcement, carry local mobile anchor information;
B, couple in router receive described router advertisement, obtain local mobile anchor information.
Preferably, between described steps A and step B, also comprise:
After intermediate router receives described router advertisement, write down the local mobile anchor information in this announcement.
Receive when middle router and only to keep the local mobile anchor information in the router advertisement that sends on the link of described announcement middle distance field value minimum when containing identical local mobile anchor information in a plurality of router advertisements.
When intermediate router sends router advertisement on the interface except that the LI(link interface) of range word segment value minimum in described announcement, the local mobile anchor information of carrying record.
Described method further comprises:
Dispose described local mobile anchor information in advance on local mobile anchor, described local mobile anchor information comprises: the tunnel type that the subnet prefix that the priority of local mobile anchor and/or local mobile anchor are supported, subnet prefix priority, local mobile anchor are supported.
A kind ofly select the method for the local mobile anchor of service for mobile node, described method comprises:
Couple in router obtains and stores all local mobile anchor information in the local mobile management domain by router advertisement;
When mobile node inserted, couple in router was defined as the local mobile anchor of this mobile node service according to the local mobile anchor information of its storage.
Described couple in router comprises by the step that router advertisement obtains all local mobile anchor information in the local mobile management domain:
Send router advertisement on the interface of local mobile anchor in the territory, and in this announcement, carry local mobile anchor information;
After intermediate router receives described router advertisement, write down the local mobile anchor information in this announcement, and these information is carried in issue during router advertisement on other interfaces;
Couple in router receives described router advertisement by the interface with intermediate router, obtains local mobile anchor information.
Receive when middle router and only to keep the local mobile anchor information in the router advertisement that sends on the link of described announcement middle distance field value minimum when containing identical local mobile anchor information in a plurality of router advertisements.
Described method further comprises:
Dispose described local mobile anchor information in advance on local mobile anchor, described local mobile anchor information comprises: the tunnel type that the subnet prefix that the priority of local mobile anchor and/or local mobile anchor are supported, subnet prefix priority, local mobile anchor are supported.
Described couple in router comprises according to the step that the local mobile anchor information of its storage is defined as the local mobile anchor of this mobile node service:
Couple in router obtains the prefix information of described mobile node association;
Be defined as the local mobile anchor of this mobile node service according to the local mobile anchor information of described prefix information and couple in router storage.
The step that described couple in router obtains the prefix information of described mobile node association comprises:
Couple in router obtains the prefix information of described mobile node association by access authentication procedure.
The step that described local mobile anchor information according to prefix information and couple in router storage is defined as the local mobile anchor of this mobile node service comprises:
If mobile node is associated with unique prefix, then support the local mobile anchor of this prefix according to described local mobile anchor Information Selection;
If there is the local mobile anchor of a plurality of these prefixes of support simultaneously, then select the high local mobile anchor of subnet prefix priority;
If the local mobile anchor of described a plurality of these prefixes of support has identical subnet prefix priority, then select the high local mobile anchor of priority;
If the priority of selecting is to there being a plurality of local mobile anchors, then select and the shortest local mobile anchor of this couple in router distance.
The step that described local mobile anchor information according to prefix information and couple in router storage is defined as the local mobile anchor of this mobile node service further comprises:
If mobile node is associated with a plurality of prefixes, then preferentially select the local mobile anchor of the high prefix correspondence of these prefix medium priorities;
If the corresponding a plurality of local mobile anchors of the prefix that described priority is high are then selected the high local mobile anchor of subnet prefix priority from these local mobile anchors;
If, then select the high local mobile anchor of priority to should a plurality of local mobile anchors being arranged subnet prefix;
If the priority of selecting is to there being a plurality of local mobile anchors, then select and the shortest local mobile anchor of this couple in router distance.
The step that described local mobile anchor information according to described prefix information and couple in router storage is defined as the local mobile anchor of this mobile node service further comprises:
If mobile node is not associated with any prefix, then determine to have the local mobile anchor of the highest subnet prefix priority;
From the local mobile anchor of determining, select the highest local mobile anchor of priority,, then therefrom select and the shortest local mobile anchor of this couple in router distance if having a plurality ofly.
By above technical scheme provided by the invention as can be seen, the present invention is in having the local mobile management domain of a plurality of local mobile anchors, utilize router advertisement to issue and collect the information of local mobile anchor, do not need to increase any new network entity, do not need to define the function that new interface can realize simply, effectively that local mobile anchor is found yet; And, utilize the present invention, to the deployment of local mobile anchor also without any restriction.When mobile node was started shooting or moved to new couple in router, couple in router can be selected according to the information of all local mobile anchors that obtain.The performance of local mobile anchor itself reaches and the distance of couple in router because this selection mode has been taken all factors into consideration, and therefore, can select the mobile node service of optimum local mobile anchor for inserting.Simultaneously,, can realize the load sharing of local mobile anchor, and automatic redundancy backup mechanism is provided by configuration to the local mobile anchor attribute.
Description of drawings
Fig. 1 is the configuration diagram of single local mobile anchor system;
Fig. 2 is the flow chart of preferred embodiment of the method for requiring local mobile anchor point information by access route of the present invention;
Fig. 3 is the configuration diagram of many local mobile anchors system;
Fig. 4 is that the present invention is the realization flow figure of preferred embodiment of the method for the mobile node local mobile anchor of selecting service.
Embodiment
Core of the present invention is in the local mobile management domain of a plurality of local mobile anchors is arranged, utilize router advertisement to issue and collect the information of local mobile anchor, couple in router is stored these information, and the local mobile anchor according to these Information Selection optimums is its service when mobile node inserts.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
With reference to Fig. 2, Fig. 2 shows the flow process of preferred embodiment of the method for requiring local mobile anchor point information by access route of the present invention, may further comprise the steps:
Step 201: configuration local mobile anchor information on local mobile anchor.Described local mobile anchor information comprises: the tunnel type that the subnet prefix that the priority of local mobile anchor and/or local mobile anchor are supported, subnet prefix priority, local mobile anchor are supported.
Step 202: send router advertisement on the interface of local mobile anchor in the territory, and in this announcement, carry local mobile anchor information.
Can dispose local mobile anchor information according to application need, issue with router advertisement as an option of router advertisement.By the propagation of router advertisement, make all routers in the local mobile management domain can both learn local mobile anchor information in the territory.
Such as, can set the local mobile anchor information option according to form shown in the following table 1.
Table 1:
The implication of each field is as follows:
Type: show that this option is the local mobile anchor information option;
Length: the length of local mobile anchor information option;
Priority: describe the disposal ability and the load condition of local mobile anchor, fill in during by local mobile anchor issue router advertisement, do not revise this field when other routers are received;
Distance: describe the distance of the router of issue router advertisement to local mobile anchor, default value was 0 when local mobile anchor sent, and router adds 1 externally issue again after receiving router advertisement;
Tunnel: the tunnel type that local mobile anchor is supported: as IP-in-IP encapsulation, GRE (generic route encapsulation) tunnel, MPLS (multiprotocol label switching) tunnel etc.;
Keep: reserve for expansion, fill out 0;
IP address: the global routable ip address of local mobile anchor;
Prefix information option: the prefix information of local mobile anchor comprises prefix length, life cycle, priority, whether can be used for information such as address configuration.
Step 203: after intermediate router receives router advertisement, write down the local mobile anchor information in this announcement, and when in announcement, sending router advertisement on the interface except that the LI(link interface) of range word segment value minimum, the local mobile anchor information of carrying record.
When middle router is received when containing identical local mobile anchor information in a plurality of router advertisements, only keep the local mobile anchor information in the router advertisement that sends on the link of announcement middle distance field value minimum.
Step 204: the announcement of couple in router receiving router obtains local mobile anchor information.
Below with reference to the framework of many local mobile anchors shown in Figure 3 system, further describe the process of router advertisement among the present invention:
In this system architecture, couple in router S21, S22, S23, S24 are positioned at the access network edge, connect one or more access points simultaneously, S0 provides access function to mobile node, all couple in routers are positioned at same local mobile management domain, link to each other by intermediate router R1, R2, R3 and local mobile anchor S11, the S12, the S13 that are positioned at same local mobile management domain.Mobile anchor point S11, S12, S13 itself also are routers.
Certainly, one or more network element devices relevant with wireless access/wire access technology can also be arranged under couple in router, for the sake of clarity, not shown in the drawings.
Mobile node S0 is the contracted user's equipment that moves in the local mobile management domain, when it is moved to following time of another one couple in router in the local mobile management domain from a couple in router, the IP address remains unchanged, and ongoing IP session connection will continue to keep.
Based on this many local mobile anchors framework, the present invention utilizes router advertisement to make each couple in router obtain the information of all local mobile anchors in the local mobile management domain.
Configuration local mobile anchor S11, S12, S13 carry the relevant information of local mobile anchor by sending router advertisement on the interface in the territory in the router advertisement, the concrete information content and message format have a detailed description in front, do not repeat them here.
Can some router interface of manual configuration do not need issue to carry the local mobile anchor information carried router notification yet,, on these interfaces, only issue the router advertisement information of the standard that defines in the standard agreement such as, the overseas interface of local mobile anchor.
After intermediate router R1, R2, R3 receive router advertisement, note the information of local mobile anchor, and these information is carried in issue during router advertisement on other interfaces.Couple in router S21, S22, S23, S24 receive router advertisement with the interface that intermediate router R1, R2, R3 are connected, and obtain the information of local mobile anchor.
Intermediate router R1, R2, R3 receive the router advertisement that all neighboring routers send, and carry local mobile anchor information in these router advertisements.Because the mobile anchor point information in these router advertisements may be repetition.Such as in Fig. 3, intermediate router R1 has received the router advertisement from local mobile anchor S11 and local mobile anchor S12, carries these information when issuing router advertisement then on the link adjacent with intermediate router R2.Intermediate router R2 recognizes the information of local mobile anchor S11 and local mobile anchor S12 by resolving this router advertisement.Simultaneously, intermediate router R2 also receives from the router advertisement on local mobile anchor S12 and the intermediate router R2 link, has also comprised the information of local mobile anchor S12 in this router advertisement.That is to say that intermediate router R2 has received the information of local mobile anchor S12 on a plurality of interfaces.Value about " distance " field in the information of local mobile anchor in the information of the local mobile anchor S12 that receives in different links is different, but other fields are identical, because intermediate router is not made amendment to other fields.Such as, " distance " is 1 from the information that middle router R1 receives, and " distance " is 0 from the information that local mobile anchor S12 receives.
At this situation, the present invention receives information option at identical local mobile anchor at router, and wherein during the different situation of " distance " field value, router only keeps that information option of " distance " field value minimum, will not keeping of other, and when on that link of receiving " distance " field value minimum, sending router advertisement, do not comprise this local mobile anchor information option in the announcement.
Like this, intermediate router R2 has received the information option of local mobile anchor S11 and local mobile anchor S12 there from middle router R1, has also received the information option of local mobile anchor S12 there from local mobile anchor S12.At local mobile anchor S12 information option, it (is 1 greatly that intermediate router R2 should abandon " distance ", the router advertisement that comes from intermediate router R1) those information, and only keep the information option of " distance " minimum (be 0, come from the router advertisement of local mobile anchor S12 self).When the issue router advertisement,, on the link of intermediate router R1 and intermediate router Interface R2, do not need to carry for local mobile anchor S11 information option.Corresponding local mobile anchor S12 information option does not need to carry on the link of intermediate router R2 and local mobile anchor S12 interface.
According to this mechanism, in the last local mobile anchor information that keeps of all couple in routers, " distance " field has been represented the jumping figure of the shortest path from this couple in router to this local mobile anchor.
For the promptness of guarantee information, when router is configured, less router advertisement release cycle can be set.And couple in router or intermediate router also can come active request intermediate router or local mobile anchor issue router advertisement by the issue router solicitation.
By receiving and send the carried router notification message between router, final couple in router S21, S22, S23, S24 can obtain the information of all local mobile anchors in the local mobile management domain, couple in router gets up these information stores, and the local mobile anchor that is used for is subsequently selected.
With reference to Fig. 4, Fig. 4 shows the realization flow figure of the present invention for the method for the local mobile anchor of mobile node selection service, may further comprise the steps:
Step 401: couple in router obtains and stores all local mobile anchor information in the local mobile management domain by router advertisement.
For the networking situation that is provided with a plurality of local mobile anchors in the local mobile management domain, the present invention utilizes router advertisement to issue and collect the information of local mobile anchor.
At first by sending router advertisement on the interface of local mobile anchor in the territory, and in this announcement, carry local mobile anchor information.These information can dispose on local mobile anchor in advance, comprising: information such as the subnet prefix that the priority of local mobile anchor and/or local mobile anchor are supported, subnet prefix priority.Such as, can be with whole user network, promptly local management territory network is divided into a plurality of sub-networks.The network prefix LMD-PREFIX sign that the configuration of whole local management territory is unified is referred to as the user network prefix, and the network segment scope according to this user network prefix is described is divided into n subnetwork-prefix with it, with SUB-PREFIX (n) sign.Like this, the corresponding sub-network of each sub-prefix, specify the subnet prefix in the local management territory that each local mobile anchor is responsible for when the network planning, that is to say, local mobile anchor should provide mobility service for the mobile node that the IP address belongs to this subnet prefix.Wherein, n can be an arbitrary value.
As required, can distribute the sub-network of one or more services for each local mobile anchor, different local mobile anchors distribute different services sub-network networks, thereby realize load balancing, alleviate the load pressure of single local mobile anchor.
In order to guarantee the reliability of system service, also can set n=2
m, m＞=0 makes the effect of playing mutual backup between any two local mobile anchors in many local mobile anchors, after the master is with local mobile anchor henbane machine, provides service on behalf of it automatically by its standby local mobile anchor.
Therefore, not only can distribute different services sub-network networks for different local mobile anchors, but also can distribute identical services sub-network network for any two local mobile anchors, that is to say, one is that the master uses local mobile anchor in these two local mobile anchors, and another is standby local mobile anchor.
If there is the subnet prefix information of a plurality of local mobile anchors configuration identical, when the local mobile anchor of the mobile node service that is chosen as access, just can select according to the priority of the subnet prefix of each local mobile anchor.Such as, SUB-PREFIX (1) is assigned on local mobile anchor 1 and the local mobile anchor 2 simultaneously, but the service priority of this SUB-PREFIX (1) is 10 on the local mobile anchor 1, and the service priority of this SUB-PREFIX (1) is 5 on the local mobile anchor 2, under the high more situation of the big more priority of numerical value, the most at last by local mobile anchor 1 for this reason the subnet prefix user service is provided.
After intermediate router receives described router advertisement, write down the local mobile anchor information in this announcement, and these information is carried in issue during router advertisement on other interfaces.Couple in router receives described router advertisement by the interface with intermediate router, obtains local mobile anchor information.The specific implementation process is existing in front to be described in detail, does not repeat them here.
According to foregoing local mobile anchor discovery mechanism of the present invention, known that couple in router at this moment the priority, couple in router of local mobile anchor are to information such as the subnet prefix of the beeline of local mobile anchor, local mobile anchor support, each subnet prefix priority.Wherein, the priority of local mobile anchor itself has embodied the disposal ability and the loading condition of local mobile anchor, which local mobile anchor is the priority of the subnet prefix of local mobile anchor support embodied finally by for this subnet prefix provides service, utilizes the priority of subnet prefix can realize the load sharing and the redundancy backup of local mobile anchor.
When couple in router can find suitable local mobile anchor according to these information that obtain when mobile node inserts, make corresponding decision-making, select optimum local mobile anchor to provide the local mobile service for mobile node.
Step 402: when mobile node inserted, couple in router obtained the user profile of this mobile node.
When mobile node is started shooting and is linked into network, at first carry out the authentication and the authentication of network insertion.In this process, couple in router can obtain the user profile of mobile node by aaa server.In the deployment of reality, there are two kinds of scenes in possibility: the mobile node permanent association is to the particular network prefix; Mobile node is not associated with the particular network prefix.
Step 403: judge whether this mobile node has been associated with the particular network prefix.If be not associated with any network prefix, then enter step 404; Otherwise, enter step 406.
Step 404: couple in router determines to have the local mobile anchor tabulation of the highest prefix priority according to the local mobile anchor information of preserving.
Because this mobile node is not associated with any network prefix, that is to say the also unallocated IP of this mobile node address.Owing to may have a plurality of subnet prefixs in the local mobile administrative domain, and for the consideration of redundancy backup, these different subnet prefixs may provide service by a plurality of local mobile anchors, their subnet prefix priority difference.The local mobile anchor that couple in router at first determines to have the highest subnet prefix priority according to these subnet prefix priority.
Step 405: selecting a local mobile anchor from the local mobile anchor tabulation with the highest prefix priority is the mobile node service.
Have a plurality ofly if having the local mobile anchor of the highest subnet prefix priority, can have from these in principle and select one arbitrarily the local mobile anchor of the highest subnet prefix priority and be its service.But consider in network operation process, the actual load of these local mobile anchors, have different with the distance of couple in router, therefore, finally can select, in all these local mobile anchors, select local mobile anchor priority the highest according to the priority of these local mobile anchors.If a plurality of local mobile anchors are still arranged, then choosing is then apart from short local mobile anchor.If distance is also identical, then can in the identical local mobile anchor of these distances, select one arbitrarily.Determine local mobile anchor, also just determined subnet prefix.
Step 406: judge further whether this mobile node has been associated with a plurality of prefixes.If not, then enter step 407; Otherwise, enter step 408.
The present technique field personnel know, needs for network management, mobile service provider can be associated with the prefix that one or more local mobile administrative domains provide with mobile node when mobile node is signatory, just permanent association is to one or more network prefixs.If mobile node is associated with unique prefix, couple in router can select to support the local mobile anchor of this network prefix according to local mobile anchor information.If mobile node is associated with a plurality of prefixes, because these prefixes itself have different priority, therefore can preferentially handle usually the prefix of high priority.
Step 407: from all support the local mobile anchor of this prefix, select local mobile anchor.
When selecting, can select the highest local mobile anchor of prefix priority to be this mobile node service according to the prefix precedence information of local mobile anchor.If the priority of selecting is to there being a plurality of local mobile anchors, then from wherein selecting high that of local mobile anchor priority, if still have a plurality of, the short local mobile anchor of chosen distance then.If distance is also identical, then therefrom chooses one wantonly and get final product.
Step 408: because mobile node has been associated with a plurality of prefixes, and these prefixes itself also have different priority usually, therefore, preferentially the high prefix of priority are handled.
Step 409: judged whether that local mobile anchor supports this prefix.If no, then return step 408, the prefix of selecting next priority to take second place; Otherwise, enter step 407, from supporting the local mobile anchor of this prefix, all select.
The present invention has more than and is confined to above-mentioned this selection mode, according to different scenes different systems of selection can also be arranged.
When mobile node moved to another couple in router from a couple in router, new couple in router also needed to carry out the selection of local mobile anchor.Since mobile node in local mobile administrative domain when mobile the IP address remain unchanged, can think that therefore mobile node determined prefix.System of selection when system of selection can be started shooting with reference to mobile node during only related particular prefix.
In addition, in IPv6, node may have a plurality of addresses, and these addresses can belong to identical prefix or different prefixes.By multi-address use, mobile service provider can perhaps provide different service quality for the different different business demands of address customization.Multiaddress has also increased the reliability that network connects, and node can be shared different Business Streams with these addresses, also can use these addresses to increase the network bandwidth together.In the local mobile management domain, mobile node can have the address of a plurality of different prefixes, if these addresses belong to the management of different local mobile anchor, couple in router will be established to tunnel between a plurality of local mobile anchors for this mobile node.When mobile node has multiaddress, similar when the selection strategy of local mobile anchor and mobile node have only single-address, do not repeat them here.
Utilize the present invention, can support the redundancy backup mechanism between the local mobile anchor well.For example, a plurality of local mobile anchors are supported identical subnet prefix simultaneously, these subnet prefixs may have different priority, when the highest local mobile anchor of this prefix priority breaks down, according to above-mentioned choice mechanism, couple in router can be chosen the high relatively another one local mobile anchor of prefix priority automatically, sets up the tunnel, provides service to mobile node.So just realized the redundancy backup of local mobile anchor.
If consider the tunnel type that local mobile anchor is supported, and local mobile anchor supports multiple tunnel style simultaneously, and then couple in router also can be tunnel type as a factor selecting local mobile anchor.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (9)
1. select the method for the local mobile anchor of service for mobile node for one kind, it is characterized in that described method comprises:
Couple in router obtains and stores all local mobile anchor information in the local mobile management domain by router advertisement, described local mobile anchor information comprises: the tunnel type that the subnet prefix that the priority of local mobile anchor, local mobile anchor are supported, subnet prefix priority, local mobile anchor are supported;
When mobile node inserted, couple in router was defined as the local mobile anchor of this mobile node service according to the local mobile anchor information of its storage.
2. method according to claim 1 is characterized in that, described couple in router comprises by the step that router advertisement obtains all local mobile anchor information in the local mobile management domain:
Send router advertisement on the interface of local mobile anchor in the territory, and in this announcement, carry local mobile anchor information;
After intermediate router receives described router advertisement, write down the local mobile anchor information in this announcement, and these information is carried in issue during router advertisement on other interfaces;
Couple in router receives described router advertisement by the interface with intermediate router, obtains local mobile anchor information.
3. method according to claim 2 is characterized in that,
Receive when middle router and only to keep the local mobile anchor information in the router advertisement that sends on the link of described announcement middle distance field value minimum when containing identical local mobile anchor information in a plurality of router advertisements.
4. according to each described method of claim 1 to 3, it is characterized in that described method further comprises:
On local mobile anchor, dispose described local mobile anchor information in advance.
5. method according to claim 4 is characterized in that, described couple in router comprises according to the step that the local mobile anchor information of its storage is defined as the local mobile anchor of this mobile node service:
Couple in router obtains the prefix information of described mobile node association;
Be defined as the local mobile anchor of this mobile node service according to the local mobile anchor information of described prefix information and couple in router storage.
6. method according to claim 5 is characterized in that, the step that described couple in router obtains the prefix information of described mobile node association comprises:
Couple in router obtains the prefix information of described mobile node association by access authentication procedure.
7. method according to claim 5 is characterized in that, the step that described local mobile anchor information according to prefix information and couple in router storage is defined as the local mobile anchor of this mobile node service comprises:
If mobile node is associated with unique prefix, then support the local mobile anchor of described unique prefix according to described local mobile anchor Information Selection;
If have the local mobile anchor of the described unique prefix of a plurality of supports simultaneously, then select the high local mobile anchor of subnet prefix priority;
If the local mobile anchor of the described unique prefix of described a plurality of support has identical subnet prefix priority, then select the high local mobile anchor of priority;
If the priority of selecting is to there being a plurality of local mobile anchors, then select and the shortest local mobile anchor of this couple in router distance.
8. method according to claim 5 is characterized in that, the step that described local mobile anchor information according to prefix information and couple in router storage is defined as the local mobile anchor of this mobile node service further comprises:
If mobile node is associated with a plurality of prefixes, then preferentially select the local mobile anchor of the high prefix correspondence of these prefix medium priorities;
If the corresponding a plurality of local mobile anchors of the prefix that described priority is high are then selected the high local mobile anchor of subnet prefix priority from these local mobile anchors;
If, then select the high local mobile anchor of priority to should a plurality of local mobile anchors being arranged subnet prefix;
If the priority of selecting is to there being a plurality of local mobile anchors, then select and the shortest local mobile anchor of this couple in router distance.
9. method according to claim 5 is characterized in that, the step that described local mobile anchor information according to described prefix information and couple in router storage is defined as the local mobile anchor of this mobile node service further comprises:
If mobile node is not associated with any prefix, then determine to have the local mobile anchor of the highest subnet prefix priority;
From the local mobile anchor of determining, select the highest local mobile anchor of priority,, then therefrom select and the shortest local mobile anchor of this couple in router distance if having a plurality ofly.
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| CN2006100865806A CN101047637B (en) | 2006-06-30 | 2006-06-30 | Method for requiring local mobile anchor point information by access route |
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| WO2010000090A1 (en) * | 2008-07-01 | 2010-01-07 | Georg-August-Universität Göttingen Stiftung öffentlichen Rechts (ohne Bereich Humanmedizin) | Inter-domain handover mechanisms between network-based localized network mobility domains |
| CN101651604B (en) | 2008-08-15 | 2013-10-02 | 华为技术有限公司 | Method and system for route optimization |
| CN101754278B (en) * | 2008-12-16 | 2012-04-25 | 中国移动通信集团公司 | Method, system and device for load balancing |
| CN102571383B (en) * | 2010-12-16 | 2015-06-17 | 腾讯科技（深圳）有限公司 | Access control method and system |
| CN103516603B (en) * | 2012-06-15 | 2019-01-15 | 中兴通讯股份有限公司 | A kind of routing optimization method, apparatus and system |
| CN103139875A (en) * | 2013-02-05 | 2013-06-05 | 陶铭 | Adaptive manufacturing automation protocol (MAP) selection method and system of hierarchical mobile internet protocol version 6 (IPv6) |
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| CN1770742A (en) * | 2001-03-13 | 2006-05-10 | 日本电气株式会社 | System for managing mobile node in mobile network |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770742A (en) * | 2001-03-13 | 2006-05-10 | 日本电气株式会社 | System for managing mobile node in mobile network |
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| H.Soliman,C.Castelluccia.Hierarchical Mobile IPv6 Mobility Management(HMIPv6).Network Working Group 4141.2005,6-29. * |
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