CN102665190A - Self-organization based mobility support method - Google Patents
Self-organization based mobility support method Download PDFInfo
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- CN102665190A CN102665190A CN2012101181700A CN201210118170A CN102665190A CN 102665190 A CN102665190 A CN 102665190A CN 2012101181700 A CN2012101181700 A CN 2012101181700A CN 201210118170 A CN201210118170 A CN 201210118170A CN 102665190 A CN102665190 A CN 102665190A
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Abstract
The invention discloses a self-organization based mobility support method which mainly solves the problems of long switching delay and long data grouping transmission delay in the prior art. The method includes the implementation steps: performing mobile detection for a mobile node MN, and sending a binding update message to a mobile anchor point MAP in a management domain after the mobile node MN is detected to be accessed to a novel access router; updating a list after the mobile anchor point MAP in the management domain of the mobile node MN receives the binding update message; informing all mobile anchor points connected with the mobile anchor point MAP in the management domain of the mobile node MN of updating contents of the list so as to realize synchronization; and resuming communication of an end communication node CN and the mobile node MN through interconnected mobile anchor points. The self-organization based mobility support method has the advantages that switching delay and data grouping transmission delay are shortened, communication interruption time is shortened, and triangle routing is avoided, and can be used for mobile management for the mobile node MN.
Description
Technical field
The invention belongs to communication technical field; Further relate to a kind of mobile support method based on self-organizing; Can be used for mobile node is carried out mobile management; Can solve simultaneously and move the big and triangle routing issue of IP handover delay, the signaling consumption at the time delay of transfer of data and home agent place in reducing to communicate by letter improves systematic function.
Background technology
Along with the appearance of some new application demands and developing rapidly of various wireless access technologys such as video conference, network TV IPTVs; More and more mobile user hopes can be at any time, anywhere; Insert wireless Internet with any-mode, so mobile management just becomes the key issue in the mobile Internet.Mobile IP is the solution of network layer mobile management, is in the support that provides on the internet node mobility, guarantees that mobile node when changing access point, still keeps communication continuity.In moving IP, whenever mobile node switches, because the change of IP address, it all will arrive the local and act on behalf of again and register, and home agent is responsible for receiving and transmitting the grouping that is exchanged between mobile node and opposite end communication node.Mobile IP belongs to centralized motion management method, and this mode is mostly adopted in existing mobile management, but mainly there are following two aspect problems in it:
1. in order to guarantee communication continuity,, all to arrive home agent HA and register again whenever mobile node switches.Distance between them is far away more, and the time delay of registration is just big more again, and then handover delay is also big more, thereby makes communication interruption time longer.In addition, when a lot of or travel frequency was very high when the quantity of mobile node in the network, the signaling consumption at home agent place was very big.
2. when mobile node was in field network, communication node CN data sent bag must be sent out the home network to mobile node earlier from the opposite end, is transmitted to mobile node by the home agent tunnel then.Such routing mode make between opposite end communication node and the mobile node the transmission packets time delay that exchanges bigger, promptly have the triangle routing issue.
To above-mentioned defective; At present proposed to move the motion management method of IP based on layering; This method is divided into different management domains to network, in each management domain, introduces a mobile anchor point MAP, and with the behavior of mobile node be divided into move in the territory and the territory between move.Each mobile node all has two IP addresses; Be respectively on-link care-of address LCoA and regional care-of address RCoA; Wherein LCoA is that the network prefix that mobile node is announced with its couple in router is the basis local address of configuration automatically, and RCoA is the global address of the mobile anchor point MAP of mobile node place management domain.Mobile node is to its RCoA of home agent registration.In the management domain of mobile node at same mobile anchor point, move and switch, promptly during the intra of territory, LCoA changes and RCoA is constant, and mobile node just can restoring communication as long as new LCoA is tied to mobile anchor point, need not register again to home agent.Mobile anchor point is to the close together of mobile node, so territory intra time delay is less; Simultaneously, a part of signaling consumption at home agent place has also been shared in the setting of mobile anchor point.
The weak point of this method is, between the management domain of mobile node at different mobile anchor points, moves and switches, and when promptly switching between the territory, RCoA also changes, and mobile node must just can restoring communication after home agent is registered again.Act on behalf of the distance of mobile node when far away when the local, handover delay is bigger between the territory.In addition, this method can not solve the triangle routing issue.
The patent application document of Inst. of Computing Techn. Academia Sinica " GSM and motion management method " (publication number CN 101902725A, application number 200910085465.0) discloses a kind of GSM and corresponding mobile property management method.This invention has been introduced one type of new node---distributed mobile agent DMA in the above-mentioned mobile management framework that moves IP based on layering, it and opposite end communication node are positioned at same subnet or close subnet, is used to mobile node and distributes home address.Mobile node is to distributed mobile agent DMA registration its on-link care-of address LCoA and regional care-of address RCoA.When mobile node moves in the management domain of same mobile anchor point MAP and switches when being the territory intra; On the one hand; Just can pass through communicating by letter of mobile anchor point and distributed mobile agent recovery and opposite end communication node as long as will new LCoA be tied to mobile anchor point, territory intra time delay is less; On the other hand, mobile node also will be tied to distributed mobile agent with new LCoA, afterwards just can be is directly received and is transmitted the grouping that is exchanged between mobile node and opposite end communication node by distributed mobile agent, thereby solved the triangle routing issue.
The weak point of this method is; Switch when moving between the management domain of mobile node at different mobile anchor points is when switching between the territory; LCoA and RCoA all change; Mobile node will be tied to distributed mobile agent with new LCoA, and has only after receiving the binding acknowledgement message that distributed mobile agent returns, and could pass through distributed mobile agent and recover and the communicating by letter of opposite end communication node.When distributed mobile agent was far away to the distance of mobile node, handover delay was still bigger between the territory.In addition, it is DMA that one type of new functional entity has been introduced in this invention, has increased the complexity of network design.
Summary of the invention
The objective of the invention is to deficiency to above-mentioned prior art; A kind of mobile support method based on self-organizing is proposed; With under the prerequisite that does not increase network complexity; Reduce to move the handover delay of IP, reduce the propagation delay time of institute's exchange data packets between opposite end communication node and the mobile node simultaneously, avoid the appearance of triangle route.
Realize that the object of the invention technical thought is: through with all mobile anchor point sub-clusterings; And in making bunch and bunch and bunch between mobile anchor point interconnect with the mode of self-organizing; Make when mobile node switches; Can carry out the mutual of control information between the mobile anchor point of these interconnection, thereby obtain the mobile node present care-of address; The packet that the opposite end communication node mails to mobile node is mobile anchor point reception and forwarding by these interconnection, rather than is transmitted by home agent, thereby has effectively reduced handover delay, has also avoided the appearance of triangle route simultaneously.
Concrete performing step of the present invention is following:
(1) moves detection
Couple in router is every at a distance from advertising of route message of 50ms broadcasting; This notice message comprises network prefix option and mobile anchor point option; The network prefix that wherein comprises the current place of mobile node MN subnet in the network prefix option comprises the global address of the mobile anchor point MAP of the current place of mobile node MN management domain in the mobile anchor point option; When mobile node MN is received advertising of route message, judge whether network prefix wherein changes, if then mobile node MN has been linked into new couple in router NAR, continue to carry out next step, otherwise, proceed to move and detect;
(2) list update
2a) mobile node MN is taken out the global address of the mobile anchor point MAP of current place management domain from the mobile anchor point option of advertising of route; This address is exactly the current regional care-of address of mobile node MN; The new on-link care-of address of prefix configuration Network Based then; And, new on-link care-of address is tied to MAP to the mobile anchor point MAP of current place management domain transmission binding update messages;
2b) the mobile anchor point MAP of mobile node MN place management domain increases or revises the information of mobile node MN in the tabulation of safeguarding after receiving binding update messages, and sends an acknowledge message to mobile node MN;
(3) tabulation synchronously
3a) all mobile anchor points are divided into some bunches,, are used to the mutual of the information of carrying out, also interconnect with interactive information between different two bunches the adjacent mobile anchor point with all interconnecting between any two mobile anchor points in the cluster;
3b) the mobile anchor point MAP of mobile node MN place management domain respectively sends a broadcast to other all mobile anchor point MAPs that link to each other with it, has comprised the content of upgrading in the tabulation that MAP safeguarded in the message;
3c) all receive that the mobile anchor point MAPs of broadcast correspondingly upgrades tabulation separately;
(4) restoring communication
4a) when opposite end communication node CN has packet to send to mobile node MN; At first the mobile anchor point MAPa nearest with opposite end communication node CN issued in packet; Judge regional care-of address and on-link care-of address that whether mobile node MN is arranged in the tabulation of being safeguarded with the nearest mobile anchor point MAPa of opposite end communication node CN; If have, then directly packet is transmitted to mobile node MN with the nearest mobile anchor point MAPa of opposite end communication node CN, jump to step (5); Otherwise, continue to carry out 4b);
4b) with the nearest mobile anchor point MAPa of opposite end communication node CN; The mobile anchor point P-MAP of mobile node MN place management domain when inserting previous couple in router PAR is issued in the packet of receiving, by P-MAP packet is transmitted to mobile node MN then;
(5) whether the regional care-of address according to mobile node MN changes the judgement switching type, if the regional care-of address of MN changes, then switching type is to switch between the territory, continues to carry out next step, otherwise, be the territory intra, return step (1);
(6) registration again
Mobile node MN is sent registration message again to home agent after the affirmation message that the mobile anchor point MAP that receives current place management domain sends, register current regional care-of address, returns step (1).
The present invention compared with prior art has the following advantages:
The first, the present invention is through with all mobile anchor point sub-clusterings, and in making bunch and bunch and bunch between mobile anchor point interconnect with the mode of self-organizing; Make when mobile node MN switches; Can carry out the mutual of control information between the mobile anchor point of these interconnection, thereby obtain the mobile node MN present care-of address, guarantee that opposite end communication node CN and mobile node MN can come restoring communication through the mobile anchor point of these interconnection; And the process that mobile node MN is acted on behalf of again registration to the local is postponed till after the restoring communication; Therefore reduced handover delay, especially under the home agent situation far away apart from mobile node MN, communication interruption time shortens greatly.
Second; The present invention is through carrying out the mutual of control information between the mobile anchor point of interconnection; Make and have the mobile node MN present care-of address in the mobile anchor point of these interconnection; Guaranteed that packet that opposite end communication node CN mails to mobile node MN no longer need mail to the home network of MN; But receive and transmit by the mobile anchor point of these interconnection, because the mobile anchor point of these interconnection is nearer apart from mobile node MN and opposite end communication node CN, so reduced propagation delay time and the data traffic at home agent place that opposite end communication node CN mails to the packet of mobile node MN.In addition, the present invention implements simply need not increase new functional entity.
Description of drawings
The network topological diagram that Fig. 1 uses for the present invention;
Fig. 2 is a flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, accompanying drawing 2 is done further description to the present invention.
With reference to Fig. 1, comprise five types of functional entitys in the network that the present invention uses, wherein MN is a mobile node, and HA is a home agent, and MAP1～MAP6 is a mobile anchor point, and AR1～AR7 is a couple in router, CN1～CN3 is the opposite end communication node.Wherein, each mobile anchor point MAP1～MAP6 safeguards a tabulation respectively, stores the information of current known each mobile node in the tabulation, comprises sign, on-link care-of address and the regional care-of address of mobile node MN.
With reference to Fig. 2, the present invention realizes that in the described network of Fig. 1 the concrete steps of mobility support are following:
Couple in router is every at a distance from advertising of route message of 50ms broadcasting; This notice message comprises network prefix option and mobile anchor point option; The network prefix that wherein comprises the current place of mobile node MN subnet in the network prefix option comprises the global address of the mobile anchor point MAP of the current place of mobile node MN management domain in the mobile anchor point option; When mobile node MN is received advertising of route message, judge whether network prefix wherein changes, if then mobile node MN has been linked into new couple in router NAR, continue to carry out next step, otherwise, proceed to move and detect;
In embodiments of the present invention; To condition of different; Mobile node MN is switched to the 3rd couple in router AR3 by second couple in router AR2 be called switching for the first time; To switch to the 4th couple in router AR4 by the 3rd couple in router AR3 and be called switching for the second time, will switch to the 5th couple in router AR5 by the 4th couple in router AR4 and be called switching for the third time;
To switching for the first time, the network prefix that comprises in the advertising of route that the setting mobile node MN is received changes, and then MN has been linked into the 3rd couple in router AR3; To switching for the second time, the network prefix that comprises in the advertising of route that the setting mobile node MN is received changes, and then MN has been linked into the 4th couple in router AR4; To switching for the third time, the network prefix that comprises in the advertising of route that the setting mobile node MN is received changes, and then MN has been linked into the 5th couple in router AR5.
2a) mobile node MN is taken out the global address of the mobile anchor point MAP of current place management domain from the mobile anchor point option of advertising of route; This address is exactly the current regional care-of address of mobile node MN; The new on-link care-of address of prefix configuration Network Based then; And, comprise current on-link care-of address of mobile node MN and regional care-of address in the message, thereby new on-link care-of address is tied to MAP to the mobile anchor point MAP of current place management domain transmission binding update messages;
In embodiments of the present invention; To switching for the first time; Mobile node MN obtains current regional care-of address RCoA from the mobile anchor point option of advertising of route; Automatically dispose new on-link care-of address LCoA then, and send binding update messages, comprise current on-link care-of address LCoA of MN and regional care-of address RCoA in the message to the mobile anchor point MAP1 of current place management domain; To switching for the second time; Mobile node MN obtains current regional care-of address RCoA from the mobile anchor point option of advertising of route; Automatically dispose new on-link care-of address LCoA then; And, comprise current on-link care-of address LCoA of MN and regional care-of address RCoA in the message to the mobile anchor point MAP2 of current place management domain transmission binding update messages; To switching for the third time; Mobile node MN obtains current regional care-of address RCoA from the mobile anchor point option of advertising of route; Automatically dispose new on-link care-of address LCoA then; And, comprise current on-link care-of address LCoA of MN and regional care-of address RCoA in the message to the mobile anchor point MAP3 of current place management domain transmission binding update messages;
2b) the mobile anchor point MAP of mobile node MN place management domain is after receiving binding update messages; In the tabulation of safeguarding, increase or revise the information of mobile node MN; Information comprises sign, on-link care-of address and the regional care-of address of mobile node MN, and sends an acknowledge message to mobile node MN;
In embodiments of the present invention, to switching for the first time, the mobile anchor point MAP1 of mobile node MN place management domain revises the on-link care-of address LCoA of mobile node MN in the tabulation that it is safeguarded after receiving binding update messages, and send an acknowledge message to MN; To switching for the second time, the mobile anchor point MAP2 of mobile node MN place management domain revises the on-link care-of address LCoA and the regional care-of address RCoA of mobile node MN in the tabulation that it is safeguarded after receiving binding update messages, and send an acknowledge message to MN; To switching for the third time, the mobile anchor point MAP3 of mobile node MN place management domain revises the on-link care-of address LCoA and the regional care-of address RCoA of mobile node MN in the tabulation that it is safeguarded after receiving binding update messages, and send an acknowledge message to MN.
3a) all mobile anchor points are divided into some bunches; With all interconnecting between any two mobile anchor points in the cluster; Be used to the mutual of the information of carrying out; Also interconnect with interactive information between different two bunches the adjacent mobile anchor point, wherein, different two bunches adjacent mobile anchor point is meant that two mobile anchor points lay respectively at two bunches edge and nearest;
In embodiments of the present invention, be that MAP1～MAP6 is divided into two bunches with all mobile anchor points in the network, wherein MAP1～MAP3 belongs to a bunch A, and MAP4～MAP6 belongs to a bunch B; Interconnect in twos between three mobile anchor points in any bunch, be used to the mutual of the information of carrying out, also interconnect with interactive information between this two bunches adjacent mobile anchor point MAP3 and the MAP4;
3b) the mobile anchor point MAP of mobile node MN place management domain respectively sends a broadcast to other all mobile anchor point MAPs that link to each other with it; Comprised the content of upgrading in the tabulation that MAP safeguarded in the message; Wherein, Other all mobile anchor point MAPs that link to each other with the mobile anchor point MAP of mobile node MN place management domain; Be divided into two kinds of situation: if MAP is adjacent with the mobile anchor point MAPx that is positioned at another bunch; Then MAPs comprises the adjacent mobile anchor point MAPx of MAP and is positioned at other all mobile anchor points of same bunch with MAP, if MAP is not positioned at the adjacent mobile anchor point of another bunch, then MAPs includes only and is positioned at other all mobile anchor points of same bunch with MAP;
In embodiments of the present invention; To switching for the first time; The mobile anchor point MAP1 of mobile node MN place management domain is not positioned at the adjacent mobile anchor point of bunch B, and all mobile anchor point MAPs of other that then links to each other with MAP1 include only other all mobile anchor points, i.e. MAP2 and the MAP3 except that MAP1 that is positioned at bunch A; So MAP1 respectively sends a broadcast to MAP2 and MAP3, comprised the on-link care-of address LCoA after mobile node MN is upgraded in the message; To switching for the second time; The mobile anchor point MAP2 of mobile node MN place management domain is not positioned at the adjacent mobile anchor point of bunch B; All mobile anchor point MAPs of other that then links to each other with MAP2 include only other all mobile anchor points except that MAP2 that are positioned at bunch A; Be MAP1 and MAP3,, comprised on-link care-of address LCoA and regional care-of address RCoA after mobile node MN is upgraded in the message so MAP2 respectively sends a broadcast to MAP1 and MAP3; To switching for the third time; The mobile anchor point MAP3 of mobile node MN place management domain is adjacent with the mobile anchor point MAP4 that is positioned at bunch B; All mobile anchor point MAPs of other that then links to each other with MAP3; Other all mobile anchor points except that MAP3 that comprise MAP4 and be positioned at bunch A are MAP1 and MAP2, so MAP3 respectively sends a broadcast to MAP1, MAP2 and MAP4, have comprised on-link care-of address LCoA and regional care-of address RCoA after mobile node MN is upgraded in the message;
3c) all receive that the mobile anchor point MAPs of broadcast correspondingly upgrades tabulation separately, is included in the sign, on-link care-of address and the regional care-of address that increase in the tabulation or revise mobile node MN;
In embodiments of the present invention, to switching for the first time, mobile anchor point MAP2 that links to each other with the mobile anchor point MAP1 of mobile node MN place management domain and MAP3 revise the on-link care-of address LCoA of mobile node MN in tabulation after receiving broadcast; To switching for the second time, mobile anchor point MAP1 that links to each other with the mobile anchor point MAP2 of mobile node MN place management domain and MAP3 revise the on-link care-of address LCoA and the regional care-of address RCoA of mobile node MN in tabulation after receiving broadcast; To switching for the third time, the mobile anchor point MAP1, MAP2 and the MAP4 that link to each other with the mobile anchor point MAP3 of mobile node MN place management domain revise the on-link care-of address LCoA and the regional care-of address RCoA of mobile node MN in tabulation after receiving broadcast.
Step 4, restoring communication.
4a) when opposite end communication node CN has packet to send to mobile node MN; At first the mobile anchor point MAPa nearest with opposite end communication node CN issued in packet; Judge regional care-of address and on-link care-of address that whether mobile node MN is arranged in the tabulation of being safeguarded with the nearest mobile anchor point MAPa of opposite end communication node CN; If have, then directly packet is transmitted to mobile node MN with the nearest mobile anchor point MAPa of opposite end communication node CN, jump to step 5; Otherwise, continue to carry out 4b);
In embodiments of the present invention, to switching for the first time and switching for the second time, when opposite end communication node CN1 has packet to send to mobile node MN; At first the nearest mobile anchor point MAP1 of distance C N1 is issued in packet, regional care-of address and the on-link care-of address of MN arranged, in the tabulation that MAP1 safeguarded so MAP1 directly is transmitted to MN with packet; Jump to step 5; When opposite end communication node CN2 and CN3 have packet to send to mobile node MN, at first distance C N2 and the nearest mobile anchor point of CN3 are issued in packet, be respectively MAP4 and MAP5; 4b is continued to carry out in the address that does not have MN in the tabulation that MAP4 and MAP5 safeguarded); To switching for the third time, when opposite end communication node CN1 and CN2 have packet to send to mobile node MN, at first distance C N1 and the nearest mobile anchor point of CN2 are issued in packet; Be respectively MAP1 and MAP4; Regional care-of address and on-link care-of address that MN is arranged in the tabulation that MAP1 and MAP4 safeguarded so MAP1 and MAP4 directly are transmitted to MN with packet, jump to step 5; When opposite end communication node CN3 has packet to send to mobile node MN; At first the nearest mobile anchor point MAP5 of distance C N3 is issued in packet, do not have the address of MN in the tabulation that MAP5 safeguarded, continue to carry out 4b);
4b) the mobile anchor point P-MAP of mobile node MN place management domain when inserting previous couple in router PAR is issued in the packet of receiving, by P-MAP packet is transmitted to mobile node MN then with the nearest mobile anchor point MAPa of opposite end communication node CN;
In embodiments of the present invention; To switching for the first time; The nearest mobile anchor point of distance C N2 and CN3 is MAP4 and MAP5; MN is issued in the packet of receiving inserting the mobile anchor point P-MAP that belongs to management domain when previous couple in router PAR is AR2, promptly MAP1 is transmitted to mobile node MN by MAP1 with packet then; To switching for the second time; The nearest mobile anchor point of distance C N2 and CN3 is the mobile anchor point P-MAP that MAP4 and MAP5 issue the packet of receiving MN place management domain when the previous couple in router PAR of access is AR3; Be MAP1, by MAP1 packet be transmitted to mobile node MN then; To switching for the third time; The nearest mobile anchor point MAP5 of distance C N3 issues MN with the packet of receiving and is inserting the mobile anchor point P-MAP that belongs to management domain when previous couple in router PAR is AR4; Be MAP2, by MAP2 packet be transmitted to mobile node MN then.
Whether step 5 changes the judgement switching type according to the regional care-of address of mobile node MN, if the regional care-of address of MN changes; Then switching type is to switch between the territory, switches between the territory to be meant that mobile node MN moves and the switching of generation between the management domain of different mobile anchor points, continues to carry out next step; Otherwise; Be the territory intra, the territory intra is meant that mobile node MN moves and the switching of generation, returns step 1 in the management domain of same mobile anchor point.
In embodiments of the present invention, to switching for the first time, the regional care-of address of mobile node MN does not change, and promptly this switches to the territory intra, returns step 1; To switching for the second time and switching for the third time, the regional care-of address of mobile node MN all changes, and is between the territory and switches, and continues to carry out next step.
In embodiments of the present invention, to switching for the second time, mobile node MN is sent registration message again to home agent HA after the affirmation message that the mobile anchor point MAP2 that receives current place management domain sends, register current regional care-of address RCoA, returns step 1; To switching for the third time, mobile node MN is sent registration message again to home agent HA after the affirmation message that the mobile anchor point MAP3 that receives current place management domain sends, register current regional care-of address RCoA, returns step 1.
Claims (7)
1. mobile support method based on self-organizing comprises:
(1) moves the detection step
Couple in router is every at a distance from advertising of route message of 50ms broadcasting; This notice message comprises network prefix option and mobile anchor point option; The network prefix that wherein comprises the current place of mobile node MN subnet in the network prefix option comprises the global address of the mobile anchor point MAP of the current place of mobile node MN management domain in the mobile anchor point option; When mobile node MN is received advertising of route message, judge whether network prefix wherein changes, if then mobile node MN has been linked into new couple in router NAR, continue to carry out next step, otherwise, proceed to move and detect;
(2) list update step
2a) mobile node MN is taken out the global address of the mobile anchor point MAP of current place management domain from the mobile anchor point option of advertising of route; This address is exactly the current regional care-of address of mobile node MN; The new on-link care-of address of prefix configuration Network Based then; And, new on-link care-of address is tied to MAP to the mobile anchor point MAP of current place management domain transmission binding update messages;
2b) the mobile anchor point MAP of mobile node MN place management domain increases or revises the information of mobile node MN in the tabulation of safeguarding after receiving binding update messages, and sends an acknowledge message to mobile node MN;
(3) tabulation synchronizing step
3a) all mobile anchor points are divided into some bunches,, are used to the mutual of the information of carrying out, also interconnect with interactive information between different two bunches the adjacent mobile anchor point with all interconnecting between any two mobile anchor points in the cluster;
3b) the mobile anchor point MAP of mobile node MN place management domain respectively sends a broadcast to other all mobile anchor point MAPs that link to each other with it, has comprised the content of upgrading in the tabulation that MAP safeguarded in the message;
3c) all receive that the mobile anchor point MAPs of broadcast correspondingly upgrades tabulation separately;
(4) restoring communication step
4a) when opposite end communication node CN has packet to send to mobile node MN; At first the mobile anchor point MAPa nearest with opposite end communication node CN issued in packet; Judge regional care-of address and on-link care-of address that whether mobile node MN is arranged in the tabulation of being safeguarded with the nearest mobile anchor point MAPa of opposite end communication node CN; If have, then directly packet is transmitted to mobile node MN with the nearest mobile anchor point MAPa of opposite end communication node CN, jump to step (5); Otherwise, continue to carry out 4b);
4b) the mobile anchor point P-MAP of mobile node MN place management domain when inserting previous couple in router PAR is issued in the packet of receiving, by P-MAP packet is transmitted to mobile node MN then with the nearest mobile anchor point MAPa of opposite end communication node CN;
(5) whether the regional care-of address according to mobile node MN changes the judgement switching type, if the regional care-of address of MN changes, then switching type is to switch between the territory, continues to carry out next step, otherwise, be the territory intra, return step (1);
(6) registration step again
Mobile node MN is sent registration message again to home agent after the affirmation message that the mobile anchor point MAP that receives current place management domain sends, register current regional care-of address, returns step (1).
2. method according to claim 1 is characterized in that step 2a) described binding update messages, comprise current on-link care-of address of mobile node MN and regional care-of address.
3. method according to claim 1 is characterized in that step 2b) information of described mobile node MN, comprise sign, on-link care-of address and the regional care-of address of mobile node MN.
4. method according to claim 1 is characterized in that step 3a) described different two bunches adjacent mobile anchor point, be meant that two mobile anchor points lay respectively at two bunches edge and nearest.
5. method according to claim 1; It is characterized in that; Step 3b) other all mobile anchor point MAPs of linking to each other of the mobile anchor point MAP of described and mobile node MN place management domain; Be divided into two kinds of situation: if MAP is adjacent with the mobile anchor point MAPx that is positioned at another bunch; Then MAPs comprises the adjacent mobile anchor point MAPx of MAP and is positioned at other all mobile anchor points of same bunch with MAP, if MAP is not positioned at the adjacent mobile anchor point of another bunch, then MAPs includes only and is positioned at other all mobile anchor points of same bunch with MAP.
6. method according to claim 1; It is characterized in that; Step 3c) described all mobile anchor point MAPs that receive broadcast correspondingly upgrade tabulation separately, are included in the sign, on-link care-of address and the regional care-of address that increase in the tabulation or revise mobile node MN.
7. method according to claim 1; It is characterized in that; Switching is meant that mobile node MN moves and the switching of generation between the described territory of step (5) between the management domain of different mobile anchor points, and the territory intra is meant that mobile node MN moves and the switching of generation in the management domain of same mobile anchor point.
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| WO2013167031A2 (en) * | 2013-01-25 | 2013-11-14 | 中兴通讯股份有限公司 | Method and system for distributed position management in heterogeneous network |
| CN103415047A (en) * | 2013-07-25 | 2013-11-27 | 北京交通大学 | Mobility supporting method in content center network |
| CN103581341A (en) * | 2013-11-25 | 2014-02-12 | 中国科学院计算机网络信息中心 | Distributed mobile data transmission method for CCN (Content-Centric Networking) |
| CN103686807A (en) * | 2013-12-05 | 2014-03-26 | 中国科学院计算机网络信息中心 | CCN subnet mobile data transmission method |
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