CN101867524A - Seamless mobile communication method and system in locator-identifier split network - Google Patents

Seamless mobile communication method and system in locator-identifier split network Download PDF

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Publication number
CN101867524A
CN101867524A CN201010207864A CN201010207864A CN101867524A CN 101867524 A CN101867524 A CN 101867524A CN 201010207864 A CN201010207864 A CN 201010207864A CN 201010207864 A CN201010207864 A CN 201010207864A CN 101867524 A CN101867524 A CN 101867524A
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China
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place
mobile node
mapping relations
coverage
moves
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CN101867524B (en
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刘亚萍
侯婕
陶静
胡宁
陈琳
张晓哲
张硕
刘小冉
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National University of Defense Technology
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National University of Defense Technology
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Abstract

The embodiment of the invention provides a seamless mobile communication method and a system in a locator-identifier split network, belonging to the technical field of communication. The method comprises the following steps: after a first mobile node moves to a second position from a first position, a service area in which the second position is located assigning a second position address to the first mobile node; judging whether the first position and the second position belong to the same service area or not; if so, the service area in which the second position is located updating the mapping relationship of the first mobile node; if not, the service area in which the second position is located saving the mapping relationship of the first mobile node after movement and transmitting the mapping relationship of the first mobile node after movement to a service area in which the first position is located; and the service area in which the first position is located saving the mapping relationship of the first mobile node after movement. The system comprises the first mobile node, the service area in which the second position is located and the service area in which the first position is located. The embodiment of the invention reduces the mobile transmission delay and solves the problem of message loss.

Description

Seamless mobile communication method and system in position and the sign separated network
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of position and identifies seamless mobile communication method and system in the separated network.
Background technology
In order to solve internet core router routing list capacity rapid expanding, and the ambiguous problem in IP address, the route seminar of study Internet working group has proposed the technology that position-based separates with sign, the technology that separate with sign this position is that the dual-use function of IP address in traditional internet architecture is separated, the identify label of new name space as node only as the position and the sign of node, introduced in the IP address.
In position and sign separated network, each mobile node communicates based on sign and Correspondent Node.When certain mobile node after primary importance moves to the second place, when other node is communicated by letter with this mobile node, still communication message is sent in the coverage, primary importance place, after this communication message is received in coverage, primary importance place, this communication message is forwarded in the coverage, second place place again; And after this mobile node moves, map information after mapped system registration self is moved immediately, this mobile node move the mapping server of preceding place network and other mapping server of storing these mobile node mapping relations and upgrade map information after moving about this mobile node.
But in realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Certain mobile node is after primary importance moves to the second place in the prior art, and therefore the message that other node is communicated by letter with this mobile node need can cause propagation delay time through the forwarding of coverage, primary importance place;
Mobile node leave coverage, primary importance place to mobile node in the process that the second place succeeds in registration, the communication message of mobile node and Correspondent Node all can be sent to coverage, mobile node primary importance place, this part message is not handled in the prior art, can be caused the message dropping problem;
The mapping server of the coverage, place, position before mobile node moves and other mapping server of storing these mobile node mapping relations have upgraded the map information after this mobile node moves, and the coverage, place, position of other nodes is not when also upgrading map information after first mobile node moves, can be because this mobile node mapping relations inconsistent, and cause losing of message.
Summary of the invention
The embodiment of the invention provides a kind of position and has identified seamless mobile communication method and system in the separated network, has solved the defective that transmission delay is big in the prior art, packet loss is high.
The embodiment of the invention provides a kind of position and has identified seamless mobile communication method in the separated network, and described method comprises:
After first mobile node moved to the second place from primary importance, coverage, second place place was that described first mobile node distributes second place address;
Described first mobile node judges whether the described primary importance and the described second place belong to same coverage;
If coverage, second place place is updated to mapping relations after first mobile node moves with the mapping relations of described first mobile node; Mapping relations after described first mobile node moves are the relation of described first mobile node sign and described second place address;
Otherwise coverage, described second place place is preserved the mapping relations after described first mobile node moves and is sent mapping relations after described first mobile node moves to coverage, primary importance place;
The mapping relations after described first mobile node moves are preserved after receiving mapping relations after described first mobile node moves in coverage, described primary importance place.
The embodiment of the invention provides a kind of position and has identified seamless mobile communication system in the separated network, and described system comprises:
First mobile node is used for moving to the second place from primary importance;
Coverage, second place place is used to described first mobile node to distribute second place address; And when described first mobile node is judged described primary importance and the described second place and belonged to same coverage, the mapping relations of described first mobile node self preserved are updated to mapping relations after described first mobile node moves; Mapping relations after described first mobile node moves are the relation of described first mobile node sign and described second place address;
When first mobile node is judged described primary importance and the described second place and is not belonged to same coverage, preserve the mapping relations after described first mobile node moves, and send mapping relations after described first mobile node moves to coverage, primary importance place;
Coverage, described primary importance place, be used to receive the mapping relations after described first mobile node moves after, preserve the mapping relations after described first mobile node moves.
The embodiment of the invention is after first mobile node moves to the second place from primary importance, upgrade in time the mapping relations of first mobile node of coverage, second place place, when the mobile node of winning is communicated by letter with other mobile node again, can directly communicate by letter with this first mobile node, needing in the prior art to have avoided transmitting communication message, shortened transmission delay by coverage, primary importance place; And after mapping relations after first mobile node that coverage, second place place sends moves are received in coverage, primary importance place, not to delete first mobile node immediately to move preceding mapping relations, move preceding mapping relations but preserve first mobile node earlier, have only when Preset Time or after receiving the deletion notice that coverage, second place place sends, just delete first mobile node and move preceding mapping relations, make in the Preset Time, when perhaps not receiving the deletion notice, before other node moves according to first mobile node and the mapping relations after mobile can communicate by letter with first mobile node, solved the problem of message dropping.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is seamless mobile communication method embodiment schematic flow sheet in position of the present invention and the sign separated network;
Fig. 2 is seamless mobile communication system embodiment structural representation in position of the present invention and the sign separated network.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment 1
Fig. 1 is seamless mobile communication method embodiment schematic flow sheet in position of the present invention and the sign separated network, and as shown in Figure 1, this method comprises:
Step 101: after first mobile node moved to the second place from primary importance, coverage, second place place was that this first mobile node distributes second place address;
Concrete, coverage, second place place is the second place address that this first mobile node distributes, and comprising:
Couple in router under the second place sends notification packet to first mobile node, and this notification packet comprises the sign of the couple in router under this second place;
First mobile node sends the register requirement message according to the sign of the couple in router under the second place to this couple in router;
After couple in router under the second place is received the register requirement message, be that first mobile node distributes second place address, and send the registration response message to first mobile node; This registration response message comprises the edge router sign of coverage, second place place.
Step 102: first mobile node judges whether this primary importance and the second place belong to same coverage;
If then execution in step 103; Otherwise, execution in step 104;
Concrete, first mobile node judges whether the edge router sign in the registration response message of receiving is identical with the edge router sign of the coverage, primary importance place of self preserving, if it is identical, confirm that then the primary importance and the second place belong to same coverage, promptly this first mobile node moves in the zone; Otherwise, confirm that the primary importance and the second place do not belong to same coverage, promptly this first mobile node moves interregional.
The zone of an edge router management is called a coverage in the embodiment of the invention.In same coverage, set up communication by mapped system in the coverage between two nodes; Mapped system is meant in same coverage in the coverage, edge router and any one couple in router are all preserved the sign of all mobile nodes in this coverage and the mapping relations of its address in this coverage, and each couple in router is all preserved the sign of this coverage inward flange router and the mapping relations of edge router global address.Set up communication by mapped system between the coverage between the node of different coverages; Mapped system is meant the mapping relations of the storage mobile node sign that distributed by the edge router of a plurality of coverages and global address between the coverage.Concrete, a plurality of edge router primordials are in the distributed hashtable mapped system of (Distributed Hash Table is called for short DHT), and in this mapped system, the storage mobile node of distribution identifies the mapping relations with global address.
Step 103: the mapping relations of first mobile node that self is preserved in coverage, second place place are updated to the mapping relations after first mobile node moves, and the mapping relations after this first mobile node moves are first mobile node sign and the relation of second place address;
Concrete, couple in router under the second place is after first mobile node distributes second place address, the mapping relations of first mobile node that self is preserved are updated to the mapping relations after first mobile node moves, mapping relations after the announcement of the issue first positions of mobile nodes conversion and first mobile node move in coverage, second place place then, after the edge router of coverage, second place place and other couple in router were received mapping relations after the announcement of the first positions of mobile nodes conversion and first mobile node move, the mapping relations before respectively this first mobile node of self preserving being moved were updated to the mapping relations after first mobile node moves.
Step 104: the mapping relations after first mobile node moves are preserved in coverage, second place place;
Concrete, couple in router under the second place is after first mobile node distributes second place address, couple in router under the second place is preserved the mapping relations after first mobile node moves, and the mapping relations after this first mobile node moved send to edge router and other couple in router of coverage, second place place, make the edge router of coverage, second place place and the mapping relations that other couple in router is all preserved this first mobile node.
Step 105: coverage, second place place sends mapping relations after this first mobile node moves to coverage, primary importance place:
Concrete, the edge router of coverage, second place place is searched this coverage, primary importance place according to being identified at of first mobile node in the mapped system between the coverage edge router sign;
The edge router of coverage, second place place is according to the edge router of above-mentioned sign to coverage, primary importance place, and sends mapping relations after first mobile node moves to mapped system between the coverage.
Step 106: the mapping relations after first mobile node moves are preserved after receiving mapping relations after first mobile node moves in coverage, primary importance place.
Concrete, after the edge router of coverage, primary importance place is received mapping relations after first mobile node moves, preserve the mapping relations after this first mobile node moves, and the mapping relations after this first mobile node moved send to all couple in routers of coverage, primary importance place, make all couple in routers of coverage, primary importance place all preserve mapping relations after this first mobile node moves.
Accordingly, this method also comprises:
The communication message that preceding mapping relations are received will be moved according to first mobile node in coverage, primary importance place, and the mapping relations after moving according to first mobile node send to coverage, second place place.
Accordingly, coverage, primary importance place is behind Preset Time, receive that perhaps deletion first mobile node of coverage, second place place transmission moves the notice of preceding mapping relations, perhaps, after the communication message that mapping relations before will moving according to first mobile node are received sends to coverage, second place place, delete first mobile node and move preceding mapping relations.
That is to say, coverage, primary importance place is after first mobile node shifts out primary importance, do not delete earlier the mapping relations before first mobile node moves, promptly in Preset Time, when perhaps not receiving the deletion notice, mapping relations after the mapping relations before in store first mobile node moves simultaneously and first mobile node move, mapping relations before in store first mobile node moves are for after shifting out primary importance when first mobile node, when also not moving on to the second place, mapping relations before Correspondent Node still can move according to first mobile node send communication message successfully, and promptly Correspondent Node still can send to communication message coverage, primary importance place.When first mobile node moves to the second place, coverage, second place place has been distributed after the address for this first mobile node, the communication message that mapping relations before coverage, primary importance place will be moved according to first mobile node are received sends to coverage, second place place, make that communication message is not lost in the first mobile node moving process.Coverage, primary importance place is behind Preset Time, receive that perhaps deletion first mobile node of the edge router transmission of coverage, second place place moves the notice of preceding mapping relations, perhaps, after the communication message that mapping relations before will moving according to first mobile node are received sends to coverage, second place place, just delete first mobile node and move preceding mapping relations, solve the problem of the message dropping that causes owing to mapping relations are asynchronous.
Concrete, after the edge router of coverage, primary importance place is deleted the mapping relations of first mobile node before moving, the notice of the mapping relations of issue deletion first mobile node in coverage, primary importance place, after all couple in routers of coverage, primary importance place are received the deletion notice, delete the mapping relations before this first mobile node of self preserving moves.
In the embodiment of the invention, when primary importance and the second place do not belong to same coverage, and first mobile node is when communicating by letter with correspondent node, and this method also comprises:
Coverage, second place place sends mapping relations after first mobile node moves to the coverage, place, position of correspondent node;
After mapping relations after first mobile node moves are received in the coverage, place, position of correspondent node, upgrade the mapping relations of first mobile node.
Concrete, the edge router of coverage, second place place is searched the edge router sign of the coverage, place, position of above-mentioned correspondent node in mapped system between the coverage;
The edge router of coverage, second place place is according to the edge router of the coverage, place, position of correspondent node sign, sends mapping relations after first mobile node moves to the edge router of the coverage, place, position of correspondent node.
After the edge router of the coverage, place, position of correspondent node is received mapping relations after first mobile node moves, the mapping relations of first mobile node that self is preserved are updated to the mapping relations after first mobile node moves, and the mapping relations after first mobile node moved send to the couple in router under the position of correspondent node, make all couple in routers of the coverage, place, position of correspondent node that the mapping relations of first mobile node self preserved are updated to mapping relations after first mobile node moves; Further, mapping relations after the edge router of the coverage, place, position of correspondent node can also move first mobile node send to other couple in router, make couple in router under the position of correspondent node and other couple in router all the mapping relations of first mobile node self preserved are updated to mapping relations after first mobile node moves.
In the embodiment of the invention, after the edge router of coverage, place, correspondent node position and all couple in routers upgraded the mapping relations of first mobile node, response message was returned to coverage, second place place in coverage, place, correspondent node position; First mobile node and correspondent node communicate based on the mapping relations of first mobile node after upgrading then.
In the prior art, after the mapping relations of first mobile node have been upgraded in the coverage, place, position of correspondent node, correspondent node still communicates by the coverage, primary importance place and first mobile node, the edge router that is the coverage, place, position of correspondent node sends to the edge router of coverage, primary importance place with communication message, this communication message is transmitted to the edge router of coverage, second place place to realize communication by the edge router of coverage, primary importance place; And in the embodiment of the invention, after the mapping relations of first mobile node have been upgraded in the coverage, place, position of correspondent node, the edge router of the coverage, place, position of correspondent node can directly send to communication message the edge router of coverage, second place place, thereby has saved transmission delay.
In the embodiment of the invention after first mobile node moves to the second place from primary importance, first mobile node judges whether the primary importance and the second place belong to same coverage, if then the mapping relations of first mobile node of self preserving are upgraded in coverage, second place place; If not, after the mapping relations of first mobile node are preserved in coverage, second place place, also send mapping relations after first mobile node moves to coverage, primary importance place, make coverage, primary importance place also preserve mapping relations after first mobile node moves, behind Preset Time, perhaps after receiving the deletion notice that coverage, second place place sends, just delete first mobile node and move preceding mapping relations, rather than delete first mobile node immediately and move preceding mapping relations, therefore in Preset Time, before other node moves according to first mobile node and the mapping relations after moving all can successfully send communication message to first mobile node, solve the problem of the message dropping that causes owing to mapping relations are inconsistent; And the mapping relations after also move first mobile node coverage, second place place send to the coverage, place, position of correspondent node, make the coverage, place, position of correspondent node upgrade the mapping relations of first mobile node of self preserving, therefore first mobile node and correspondent node can direct communications, needing in the prior art to have avoided the defective of the propagation delay time that forwarding brought of coverage, primary importance place; And in the prior art mapping relations of mobile node and address are kept in the mapping server, the couple in router of mobile node correspondence need send the mapping request to mapping server, obtain the interior address information in zone of mobile node correspondence, will inevitably have the inquiry time delay; And because the node scale of a coverage can be very not big, in a coverage that the mapping relations of mobile node and address are all in store at edge router and each couple in router in the embodiment of the invention, thereby in the transmission course of communication message, the couple in router of mobile node correspondence can be inquired about the interior address information in zone that local sign mapping table promptly gets the mobile node correspondence, thereby has avoided the inquiry time delay.
Embodiment 2
Fig. 2 is seamless mobile communication system embodiment structural representation in position of the present invention and the sign separated network, and as shown in Figure 2, this system comprises: first mobile node 1, coverage, primary importance place 2 and coverage, second place place 3;
Wherein, first mobile node 1 is used for moving to the second place from primary importance;
Coverage, second place place 3 is used to first mobile node 1 to distribute second place address; And when first mobile node 1 is judged primary importance and the second place and belonged to same coverage, the mapping relations of first mobile node 1 self preserved are updated to mapping relations after first mobile node 1 moves; Mapping relations after first mobile node 1 moves are the relation of first mobile node sign and second place address;
When first mobile node 1 is judged primary importance and the second place and do not belonged to same coverage, preserve the mapping relations after first mobile node 1 moves, and send mapping relations after first mobile node 1 moves to coverage, primary importance place 2;
Coverage, primary importance place 2, be used to receive the mapping relations after first mobile node 1 moves after, preserve the mapping relations after first mobile node 1 moves.
Coverage, second place place 3 comprises: the couple in router 31 under the second place and the edge router 32 of coverage, second place place;
Couple in router 31 under the second place is used to first mobile node 1 to distribute second place address; And when primary importance and the described second place belong to same coverage, the mapping relations of first mobile node 1 that self is preserved are updated to the mapping relations after first mobile node 1 moves, and the mapping relations after first mobile node 1 moved send to the edge router 32 of coverage, second place place;
The edge router 32 of coverage, second place place, be used to receive the mapping relations after first mobile node 1 moves after, the mapping relations of first mobile node 1 that self is preserved are updated to the mapping relations after first mobile node 1 moves.
Couple in router 31 under the second place, also be used for when primary importance and the second place do not belong to same coverage, preserve the mapping relations after first mobile node 1 moves, and the mapping relations of first mobile node 1 are sent to the edge router 32 of coverage, second place place;
The edge router 32 of coverage, second place place also is used to preserve the mapping relations after first mobile node 1 moves; Mapping relations after also being used for first mobile node 1 moved send to coverage, primary importance place 2.
When first mobile node 1 communicates with correspondent node 4, this mobile communication system also comprises the coverage, place, position 5 of correspondent node, accordingly, coverage, second place place 3, the mapping relations after also being used for first mobile node 1 moved send the coverage, place, position 5 of correspondent node;
The coverage, place, position 5 of correspondent node, also be used to receive the mapping relations after first mobile node 1 moves after, the mapping relations of first mobile node 1 that self is preserved are updated to the mapping relations after first mobile node 1 moves.
The coverage, place, position 5 of correspondent node comprises: the couple in router 52 under the edge router 51 of the coverage, place, position of correspondent node and the position of correspondent node;
The edge router 51 of the coverage, place, position of correspondent node, after being used to receive the mapping relations after first mobile node 1 moves, the mapping relations of first mobile node 1 that self is preserved are updated to the mapping relations after first mobile node 1 moves, and the mapping relations after first mobile node 1 moved send to the couple in router 52 under the correspondent node;
Couple in router 52 under the position of correspondent node, be used to receive the mapping relations after first mobile node 1 moves after, the mapping relations of first mobile node 1 self preserved are updated to mapping relations after first mobile node 1 moves.
Coverage, primary importance place 2 comprises: the couple in router 22 under the edge router 21 of coverage, primary importance place and the primary importance;
The edge router 21 of coverage, primary importance place, after being used to receive the mapping relations after first mobile node 1 moves, preserve the mapping relations after first mobile node 1 moves, and the mapping relations after first mobile node 1 moved send to the couple in router 22 under the primary importance;
Couple in router 22 under the primary importance, be used to receive the mapping relations after first mobile node 1 moves after, preserve the mapping relations after first mobile node 1 moves.
Coverage, primary importance place 2 also is used for and will moves the communication message that preceding mapping relations are received according to first mobile node 1, and the mapping relations after moving according to first mobile node 1 send to coverage, second place place 3; Also be used for behind Preset Time, perhaps receive the mapping relations before deletion first mobile node 1 that coverage, second place place 3 sends moves notice or, after the communication message that mapping relations before will moving according to first mobile node 1 are received sends to coverage, second place place 3, delete first mobile node 1 and move preceding mapping relations.
Need to prove, for mobile communication system first embodiment, because it is substantially corresponding to method first embodiment, so relevant part gets final product referring to the part explanation of method first embodiment.
In the embodiment of the invention after first mobile node moves to the second place from primary importance, first mobile node judges whether the primary importance and the second place belong to same coverage, if then the mapping relations of first mobile node of self preserving are upgraded in coverage, second place place; If not, after the mapping relations of first mobile node are preserved in coverage, second place place, also send mapping relations after first mobile node moves to coverage, primary importance place, make coverage, primary importance place also preserve mapping relations after first mobile node moves, behind Preset Time, perhaps after receiving the deletion notice that coverage, second place place sends, just delete first mobile node and move preceding mapping relations, rather than delete first mobile node immediately and move preceding mapping relations, therefore in Preset Time, before other node moves according to first mobile node and the mapping relations after moving all can successfully send communication message to first mobile node, solve the problem of the message dropping that causes owing to mapping relations are inconsistent; And the mapping relations after also move first mobile node coverage, second place place send to the coverage, place, position of correspondent node, make the coverage, place, position of correspondent node upgrade the mapping relations of first mobile node of self preserving, therefore first mobile node and correspondent node can direct communications, needing in the prior art to have avoided the defective of the propagation delay time that forwarding brought of coverage, primary importance place; And in the prior art mapping relations of mobile node and address are kept in the mapping server, the couple in router of mobile node correspondence need send the mapping request to mapping server, obtain the interior address information in zone of mobile node correspondence, will inevitably have the inquiry time delay; And because the node scale of a coverage can be very not big, in a coverage that the mapping relations of mobile node and address are all in store at edge router and each couple in router in the embodiment of the invention, thereby in the transmission course of communication message, the couple in router of mobile node correspondence can be inquired about the interior address information in zone that local sign mapping table promptly gets the mobile node correspondence, thereby has avoided the inquiry time delay.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (23)

1. seamless mobile communication method in a position and the sign separated network is characterized in that described method comprises:
After first mobile node moved to the second place from primary importance, coverage, second place place was that described first mobile node distributes second place address;
Described first mobile node judges whether the described primary importance and the described second place belong to same coverage;
If coverage, second place place is updated to mapping relations after first mobile node moves with the mapping relations of described first mobile node; Mapping relations after described first mobile node moves are the relation of described first mobile node sign and described second place address;
Otherwise coverage, described second place place is preserved the mapping relations after described first mobile node moves and is sent mapping relations after described first mobile node moves to coverage, primary importance place;
The mapping relations after described first mobile node moves are preserved after receiving mapping relations after described first mobile node moves in coverage, described primary importance place.
2. seamless mobile communication method in position according to claim 1 and the sign separated network is characterized in that coverage, described second place place is the second place address that described first mobile node distributes, and comprising:
Couple in router under the described second place sends notification packet to described first mobile node, the sign of the couple in router under described notification packet comprises after the described second place;
Described first mobile node sends the register requirement message according to the sign of the couple in router under the described second place to described couple in router;
After couple in router under the described second place is received described register requirement message, for described first mobile node distributes second place address; And to described first mobile node transmission registration response message, described registration response message comprises the edge router sign of coverage, described second place place.
3. seamless mobile communication method in position according to claim 2 and the sign separated network is characterized in that described first mobile node judges that whether the described primary importance and the described second place belong to the same area, comprising:
Described first mobile node judges whether the edge router sign in the described registration response message is identical with the edge router sign of the coverage, primary importance place of self preserving, if identical, confirm that then the described primary importance and the described second place belong to the same area; Otherwise, confirm that the described primary importance and the described second place do not belong to the same area.
4. seamless mobile communication method in position according to claim 1 and the sign separated network, it is characterized in that, coverage, described second place place is updated to mapping relations after first mobile node moves with the mapping relations of described first mobile node, comprising:
Couple in router under the described second place is updated to mapping relations after described first mobile node moves with the mapping relations of described first mobile node self preserved, and the mapping relations after described first mobile node moved send to the edge router of coverage, described second place place, and the edge router that makes coverage, described second place place is updated to mapping relations after described first mobile node moves with the mapping relations of described first mobile node self preserved.
5. seamless mobile communication method in position according to claim 4 and the sign separated network is characterized in that, sets up communication by mapped system in the coverage between the node in the same coverage; Mapped system is meant the sign that edge router in the described coverage and any couple in router are all preserved all mobile nodes in this coverage and the mapping relations of its address in this coverage in the described coverage, and each couple in router is all preserved the edge router sign of this coverage and the sign mapping relations of edge router global address.
6. seamless mobile communication method in position according to claim 1 and the sign separated network is characterized in that, sets up communication by mapped system between the coverage between the node of different coverages; Mapped system is meant the mapping relations of the storage mobile node sign that distributed by the edge router of a plurality of coverages and global address between described coverage.
7. seamless mobile communication method in position according to claim 6 and the sign separated network, it is characterized in that, coverage, described second place place is preserved the mapping relations after described first mobile node moves and is sent mapping relations after described first mobile node moves to coverage, primary importance place, comprising:
Couple in router under the described second place is preserved the mapping relations after described first mobile node moves, and the mapping relations after described first mobile node moved send to the edge router of coverage, described second place place;
The edge router of coverage, described second place place is preserved the mapping relations after described first mobile node moves after receiving mapping relations after described first mobile node moves; And the mapping relations after described first mobile node moved send to coverage, described primary importance place.
8. seamless mobile communication method in position according to claim 7 and the sign separated network, it is characterized in that, mapping relations after the edge router of coverage, described second place place moves described first mobile node send to coverage, described primary importance place, comprising:
The edge router of coverage, described second place place is searched coverage, described primary importance place according to being identified at of described first mobile node in the mapped system between the coverage edge router sign;
The edge router of coverage, described second place place sends mapping relations after described first mobile node moves according to described sign mapped system between the edge router of coverage, described primary importance place and described coverage.
9. according to seamless mobile communication method in claim 7 or 8 described positions and the sign separated network, it is characterized in that when described primary importance and the described second place did not belong to same coverage, described method also comprised:
Coverage, described second place place sends mapping relations after described first mobile node moves to the coverage, place, position of correspondent node;
After mapping relations after described first mobile node moves are received in the coverage, place, position of described correspondent node, the mapping relations of described first mobile node self preserved are updated to mapping relations after described first mobile node moves.
10. seamless mobile communication method in position according to claim 9 and the sign separated network, it is characterized in that, coverage, described second place place sends mapping relations after described first mobile node moves to the coverage, place, position of correspondent node, comprising:
The edge router of coverage, described second place place is searched the edge router sign of place, the position service of described correspondent node in mapped system between the coverage;
The edge router of coverage, described second place place sends mapping relations after described first mobile node moves according to described sign to the edge router of the coverage, place, position of described correspondent node.
11. seamless mobile communication method in position according to claim 9 and the sign separated network, it is characterized in that, after mapping relations after described first mobile node moves are received in the coverage, place, position of described correspondent node, the mapping relations of described first mobile node that self is preserved are updated to the mapping relations after described first mobile node moves, and comprising:
After the edge router of the coverage, place, position of described correspondent node is received mapping relations after described first mobile node moves, the mapping relations of described first mobile node that self is preserved are updated to the mapping relations after described first mobile node moves, and the mapping relations after described first mobile node moved send to the couple in router under the position of described correspondent node, make the couple in router under the position of described correspondent node that the mapping relations of first mobile node self preserved are updated to mapping relations after first mobile node moves.
12., it is characterized in that described method also comprises according to seamless mobile communication method in claim 10 or 11 described positions and the sign separated network:
Response message is returned to coverage, described second place place after the mapping relations of described first mobile node are upgraded in coverage, place, described correspondent node position;
Described first mobile node and described correspondent node communicate based on the mapping relations of described first mobile node after upgrading.
13. seamless mobile communication method in position according to claim 1 and the sign separated network, it is characterized in that, the mapping relations after described first mobile node moves are preserved after receiving mapping relations after described first mobile node moves in coverage, described primary importance place, comprising:
After the edge router of coverage, described primary importance place is received mapping relations after described first mobile node moves, preserve the mapping relations after described first mobile node moves, and the mapping relations after described first mobile node moved send to the couple in router under the described primary importance, make couple in router under the described primary importance preserve mapping relations after described first mobile node moves.
14. seamless mobile communication method in position according to claim 1 and the sign separated network, it is characterized in that, described method comprises: the communication message that preceding mapping relations are received will be moved according to described first mobile node in coverage, described primary importance place, and the mapping relations after moving according to described first mobile node send to coverage, described second place place.
15. seamless mobile communication method in position according to claim 14 and the sign separated network is characterized in that described method comprises:
Coverage, described primary importance place is behind Preset Time, receive that perhaps deletion first mobile node of coverage, second place place transmission moves the notice of preceding mapping relations, perhaps, after the communication message that mapping relations before will moving according to described first mobile node are received sends to coverage, described second place place, delete described first mobile node and move preceding mapping relations.
16. seamless mobile communication system in a position and the sign separated network is characterized in that described system comprises:
First mobile node is used for moving to the second place from primary importance;
Coverage, second place place is used to described first mobile node to distribute second place address; And when described first mobile node is judged described primary importance and the described second place and belonged to same coverage, the mapping relations of described first mobile node self preserved are updated to mapping relations after described first mobile node moves; Mapping relations after described first mobile node moves are the relation of described first mobile node sign and described second place address;
When first mobile node is judged described primary importance and the described second place and is not belonged to same coverage, preserve the mapping relations after described first mobile node moves, and send mapping relations after described first mobile node moves to coverage, primary importance place;
Coverage, described primary importance place, be used to receive the mapping relations after described first mobile node moves after, preserve the mapping relations after described first mobile node moves.
17. seamless mobile communication system in position according to claim 16 and the sign separated network is characterized in that coverage, described second place place comprises:
Couple in router under the described second place is used to described first mobile node to distribute second place address; When described primary importance and the described second place belong to same coverage, the mapping relations of described first mobile node that self is preserved are updated to the mapping relations after first mobile node moves, and the mapping relations after described first mobile node moved send to the edge router of coverage, described second place place;
The edge router of coverage, described second place place, be used to receive the mapping relations after described first mobile node moves after, the mapping relations of first mobile node that self is preserved are updated to the mapping relations after described first mobile node moves.
18. seamless mobile communication system in position according to claim 17 and the sign separated network, it is characterized in that, couple in router under the described second place, also be used for when described primary importance and the described second place do not belong to same coverage, preserve the mapping relations after described first mobile node moves, and the mapping relations of described first mobile node are sent to the edge router of coverage, described second place place;
The edge router of coverage, described second place place also is used to preserve the mapping relations after described first mobile node moves; Mapping relations after also being used for described first mobile node moved send to coverage, described primary importance place.
19. seamless mobile communication system in position according to claim 16 and the sign separated network, it is characterized in that, coverage, described second place place, the mapping relations after also being used for described first mobile node moved send the coverage, place, position of correspondent node;
Accordingly, the coverage, place, position of described correspondent node, after also being used to receive the mapping relations after described first mobile node moves, the mapping relations of described first mobile node that self is preserved are updated to the mapping relations after described first mobile node moves.
20. seamless mobile communication system in position according to claim 19 and the sign separated network is characterized in that the coverage, place, position of described correspondent node comprises:
The edge router of the coverage, place, position of described correspondent node, after being used to receive the mapping relations after described first mobile node moves, the mapping relations of described first mobile node that self is preserved are updated to the mapping relations after described first mobile node moves, and the mapping relations after described first mobile node moved send to the affiliated couple in router of correspondent node;
Couple in router under the position of described correspondent node, after being used to receive the mapping relations after described first mobile node moves, the mapping relations of described first mobile node that self is preserved are updated to the mapping relations after described first mobile node moves.
21. seamless mobile communication system in position according to claim 16 and the sign separated network is characterized in that coverage, described primary importance place comprises:
The edge router of coverage, described primary importance place, after being used to receive the mapping relations after described first mobile node moves, preserve the mapping relations after described first mobile node moves, and the mapping relations after described first mobile node moved send to the couple in router under the described primary importance;
Couple in router under the described primary importance, be used to receive the mapping relations after described first mobile node moves after, preserve the mapping relations after described first mobile node moves.
22. seamless mobile communication system in position according to claim 16 and the sign separated network, it is characterized in that, coverage, described primary importance place also is used for, to move the communication message that preceding mapping relations are received according to described first mobile node, the mapping relations after moving according to described first mobile node send to coverage, described second place place.
23. seamless mobile communication system in position according to claim 22 and the sign separated network, it is characterized in that, coverage, described primary importance place also is used for, behind Preset Time, receive that perhaps described first mobile node of deletion of coverage, described second place place transmission moves the notice of preceding mapping relations, perhaps, after the communication message that mapping relations before will moving according to described first mobile node are received sends to coverage, described second place place, delete described first mobile node and move preceding mapping relations.
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