CN101621793A - Quick switching method and device based on decentralization mobility management business architecture - Google Patents
Quick switching method and device based on decentralization mobility management business architecture Download PDFInfo
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Abstract
The invention discloses a quick switching method and a device based on decentralization mobility management business architecture, relating to the field of network technology. The invention is invented in order to solve the problem of long switching time of the prior art. The embodiment of the invention provides a quick switching method based on decentralization mobility management business architecture, comprising the following steps: a movable node moves to an adjacent network within a source network covering range, and the position information of the movable node in the source network and the route information of the movable node in the adjacent network are obtained; according to the position information of the movable node in the source network and the route information of the movable node in the adjacent network, the address configuration information of the movable node in the adjacent network is obtained; the movable node switches to the adjacent network from the source network, and a target address information is configured to the movable node. The switching time can be shortened by the invention.
Description
Technical field
The present invention relates to networking technology area, relate in particular to fast switch over method and device based on decentralization mobile management business structure.
Background technology
DMMS (Decentralized Mobility Management Service, decentralization mobile management business structure) disposes mobility management apparatus MA (Mobility Agent, mobile agent) at network edge, for mobile node provides mobility service; The positional information of MN (Mobile Node, mobile node) is by D-DNS (Domain Name Server, name server; Dynamic-DNS (DDNS server) manages; CN (Corresponding Node, peer node) is the peer node that communicates with MN; OMA (old MA) is the mobility management apparatus at the decentralization of oAN (old AN Access Network) network edge employing; NMA is the mobility management apparatus at the decentralization of nAN network edge employing.
As shown in Figure 1, when MN switches, in order to guarantee communication continuity with CN, adopted SHIM6 (Site Multihoming by IPv6 Intermediation, operate by the many caves of website that the IPv6 intermediate medium carries out) agreement, carry out alternately, and between oMA and nMA, set up the related data forwarding that is used for of SHIM6; Idiographic flow is:
(1) when MN enters a new network, at first can remove to register or upgrade the binding relationship of its ID and IP address to the D-DNS; Wherein, MN address in the oAN network is oIP; And when CN will initiate with the communicating by letter of MN, CN can initiatively go to the IP address of D-DNS inquiry MN by the ID of MN;
(2) MN initiatively initiates and the communicating by letter of CN by the CN address; Perhaps, CN passes through to D-DNS and inquires the current address oIP of MN, and realization is communicated by letter with MN's;
(3) MN moves in abutting connection with network (nAN), and obtains in abutting connection with the network information by moving to detect.For example: can obtain in abutting connection with the network information by RS and RA message.
(4) MN adopts DHCP (Dynamic Host Configuration Protocol, DHCP), obtains a new IP address from nAN;
(5) MN is in the process that moves, in order to keep communication continuity with CN all the time, to still adopt oIP to carry out transfer of data as the source address of packet to CN, at this moment, the nMA among the nAN will be according to the packet of receiving, analyzing MN is to move and next user from oAN, and then the SHIM6 of initiation and oMA is mutual, by the I1 that carries out shaking hands as shown in Figure 2 for 4 times, R1, I2, R2; Setting up SHIM6 between nMA and oMA is connected.
(6) nMA be connected with SHIM6 between the oMA set up after, nMA will add the mode of SHIIM6 head by the packet that MN is sent, pass through oMA, packet is issued CN, simultaneously, in whole process, CN still can mail to data the oIP of MA, and after oMA receives the packet of CN, can packet be transmitted to MN by nMA by adding the mode of SHIM6 head equally.
Operate in the handoff procedure, need not MN and participate in, therefore need not MN carries out any upgrading.With the pairing concrete signaling process of Fig. 1 as shown in Figure 2.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: MN switches to when communicating in abutting connection with network from source network crossing over MA, can't obtain in abutting connection with the network information fast, and finish relevant configuration.
Summary of the invention
Embodiments of the invention provide a kind of fast switch over method and device based on decentralization mobile management business structure.This method comprises:
In the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
In the positional information of source network and in abutting connection with the network routing iinformation, obtain the destination address configuration information of mobile node according to described mobile node at the adjacency network;
Mobile node switches in abutting connection with network from source network, is mobile node configuration purpose address information.
A kind of apparatus for fast switching based on decentralization mobile management business structure comprises:
Information acquisition unit: be used in the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
Destination address configuration information acquiring unit: be used for according to described mobile node obtaining the destination address configuration information of mobile node at the adjacency network in the positional information of source network and in abutting connection with the network routing iinformation;
Address information dispensing unit: be used for mobile node and switch in abutting connection with network, be mobile node configuration purpose address information from source network.
Fast switch over method and device that the embodiment of the invention provides based on decentralization mobile management business structure, the embodiment of the invention is by in the source network coverage, when mobile node moves to the adjacency network, obtain mobile node in the positional information of source network, in abutting connection with network routing iinformation and mobile node destination address configuration information at the adjacency network, thereby entering into before the network at mobile node, is the destination address configuration information of mobile node configuration in abutting connection with network.When mobile node entered in abutting connection with network, then can save was that mobile node disposed in abutting connection with the time of the destination address configuration information of network, thereby has shortened the switching time of mobile node.In prior art, MN switches to when communicating in abutting connection with network from source network crossing over MA, can't obtain fast in abutting connection with the network information, and finish relevant configuration and compare, the embodiment of the invention is moving to before network by mobile node, be the destination address configuration information of mobile node configuration, carry out in abutting connection with the switching time of the destination address configuration information of network moving to behind network thereby shortened mobile node in abutting connection with network.
Description of drawings
Fig. 1 in the prior art when MN switches, in order to guarantee communication continuity, adopt the SHIM6 agreement to carry out mutual schematic network structure with CN;
Fig. 2 in the prior art when MN switches, in order to guarantee communication continuity, adopt the SHIM6 agreement with CN, carry out the flow chart of Signalling exchange;
A kind of fast switch over method flow chart that Fig. 3 provides for the embodiment of the invention based on decentralization mobile management business structure;
The another kind that Fig. 4 provides for the embodiment of the invention is based on the fast switch over method flow chart of decentralization mobile management business structure;
A kind of apparatus for fast switching structural representation that Fig. 5 provides for the embodiment of the invention embodiment of the invention based on decentralization mobile management business structure;
The another kind that Fig. 6 provides for the embodiment of the invention embodiment of the invention is based on the apparatus for fast switching structural representation of decentralization mobile management business structure;
Fig. 7 moves detection for what the embodiment of the invention provided by source network oMA, moves to the handover operation particular flow sheet of nMA coverage from source network oMA coverage as MN;
Fig. 8 moves detection for what the embodiment of the invention provided by MN, moves to the handover operation particular flow sheet of nMA coverage from source network oMA coverage as MN.
Embodiment
Below in conjunction with accompanying drawing fast switch over method and the device of the embodiment of the invention based on decentralization mobile management business structure is described in detail.
As shown in Figure 3, a kind of fast switch over method that the embodiment of the invention provides based on decentralization mobile management business structure, in the process that realizes the embodiment of the invention, this method comprises:
301: in the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
302: in the positional information of source network and in abutting connection with the network routing iinformation, obtain the destination address configuration information of mobile node at the adjacency network according to described mobile node;
303: mobile node switches in abutting connection with network from source network, is mobile node configuration purpose address information.
As shown in Figure 4, the another kind that the embodiment of the invention provides is based on the fast switch over method of decentralization mobile management business structure, and in the process that realizes the embodiment of the invention, this method comprises:
401: in the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation; Described in abutting connection with the network routing iinformation by mobile detection technique according to the determined routing iinformation of mobile node institute moving direction in abutting connection with network.
402: in the positional information of source network and in abutting connection with the network routing iinformation, judge whether mobile node is about to switch according to described mobile node;
403: confirming will be as the server of mobile node in abutting connection with networks mobile agent;
404: will be packaged with the HI message (Handover Initiate switch initiate message) of source network address configuration information and mobile node request distribution, and send to the adjacency networks mobile agent in abutting connection with the destination address configuration information of network;
405: receive Hack message (Handover Acknowledge): handover acknowledge message), obtain the destination address configuration information of mobile node at the adjacency network.
406:, set up bidirectional tunnel according to the address configuration information and the destination address configuration information of described mobile node at source network;
407: survey mobile node and source network do not have be connected after, the communication data of mobile node and peer node is carried out the storage forwarding by bidirectional tunnel; This step when the mobile agent of source network detect mobile node and source network do not have be connected after, can carry out storage by bidirectional tunnel and transmit; When detect mobile node and source network do not have be connected after, when mobile node also is not connected with the adjacency network, the data that mobile node is communicated by letter with peer node are stored it by the new and old mobile agent of mobile node, bidirectional tunnel carries out data forwarding, up to mobile node with connect in abutting connection with network, be stored in the data that the mobile node in the new and old mobile agent communicates by letter with peer node and transmit by bidirectional tunnel.
408: mobile node enters in network coverage from source network, described mobile node with connect in abutting connection with network;
409: mobile node according to described in abutting connection with network destination address configuration information, with adjacency network validation destination address configuration information and keep the source address configuration information;
410: mobile node is the destination address configuration information with the source address configuration information update.
As shown in Figure 5, a kind of apparatus for fast switching of providing of the embodiment of the invention embodiment of the invention based on decentralization mobile management business structure; This device comprises:
Information acquisition unit 501: be used in the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
Destination address configuration information acquiring unit 502: be used for according to described mobile node obtaining the destination address configuration information of mobile node at the adjacency network in the positional information of source network and in abutting connection with the network routing iinformation;
Address information dispensing unit 503: be used for mobile node and switch in abutting connection with network, be mobile node configuration purpose address information from source network.
As shown in Figure 6, the another kind that provides of the embodiment of the invention embodiment of the invention is based on the apparatus for fast switching of decentralization mobile management business structure; This device comprises:
Information acquisition unit 501: be used in the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
Judging unit 601: be used for according to described mobile node in the positional information of source network and in abutting connection with the network routing iinformation, judge that mobile node is about to switch.If judge that mobile node is about to switch, then continue to enter destination address configuration information acquiring unit 502.
Destination address configuration information acquiring unit 502: be used for according to described mobile node obtaining the destination address configuration information of mobile node at the adjacency network in the positional information of source network and in abutting connection with the network routing iinformation; This unit further comprises:
Validation of information subelement 602: being used to confirm will be as the server of mobile node in abutting connection with networks mobile agent; After described validation of information subelement 602 affirmations can be used as the server of mobile node in abutting connection with network, mobile node then can send subelement 603 by information and send the HI message.
Information sends subelement 603: be used for distributing in abutting connection with the HI message of the destination address configuration information of network being packaged with source network address configuration information and mobile node request, send to the adjacency networks mobile agent;
Message pick-up subelement 604: be used to receive Hack message, obtain the destination address configuration information of mobile node at the adjacency network.
Unit 605 is set up in the tunnel: be used for setting up bidirectional tunnel according to the address configuration information and the destination address configuration information of described mobile node at source network;
Probe unit 606: be used to survey mobile node and source network do not have be connected after, the communication data of mobile node and peer node is carried out storage by bidirectional tunnel transmits.Be described mobile node after moving in the network coverage, for the session of setting up at source network, when still needing to keep communication, mobile node still keeps communicating by letter by its source network address and peer node, and the data of its communication are stored forwarding by bidirectional tunnel; And the session of in the adjacency network, setting up when mobile node, then the address and the CN of the network by the present place of mobile node directly communicate, and need not pass through bidirectional tunnel.
Address information dispensing unit 503: be used for mobile node and switch in abutting connection with network, be mobile node configuration purpose address information from source network.This unit further comprises:
Subelement 607 connects: be used for mobile node and enter in network coverage from source network, described mobile node with connect in abutting connection with network;
Address configuration information is confirmed subelement 608: be used for mobile node according to described in abutting connection with network destination address configuration information, with adjacency network validation destination address configuration information and keep the source address configuration information; After mobile node connects, just can confirm that memory cell 607 confirms that the destination address configuration informations can use, and will preserve the source address configuration information by address configuration information, thereby before keeping switching and the continuity of the communication session that carries out of CN; And the session of in the adjacency network, setting up when mobile node, then the address and the CN of the network by the present place of mobile node directly communicate, and need not pass through bidirectional tunnel.
Information updating storing sub-units 609: to be used for mobile node be the destination address configuration information with the source address configuration information update and keep the source address configuration information.
Realizing that major function entity and function thereof that the embodiment of the invention adopts in the quick handover scheme based on DMMS comprise: mobile agent MA, LMS (Location Management Server, location management server), mobile node MN, opposite end communication node CN.
1, mobile agent MA (gateway): be positioned at the mobility management apparatus of access network, major function comprises:
A) for the user who networks for the first time authenticates, authentication and registration;
B) by the DHCPv6 agreement, pass through authentication for all, need enter the terminal distribution IP address of this Access Network;
C) (nCoA pCoA), sets up bidirectional tunnel with neighbours MA, for MN carries out data forwarding, so that make MN striding MA when switching, can keep conversation continuity in new, the old IP address of buffer memory MN temporarily;
D) need not to realize the mobile management function under the situation that MN makes amendment, upgrades and too much participate in;
2. location management server (LMS): major function has:
A) group of the ID-IP of office terminal concerns surely;
B) provide and on-the-fly modify mechanism, make terminal after changing the IP address can by with the upgrading in time alternately of location management server;
C) provide inquiry mechanism, make CN obtain the MN current address by inquiry mode.
3, mobile node (MN): portable terminal; need not to support IPv6 (Internet Protocol Version 6; Internet protocol the 6th edition) the outer particular protocol of agreement; comprise notebook computer, single mode or multi mode terminal, PDA (Personal digital assistant; personal digital assistant), IAD (Integrated Access Device, integrated access device) etc.
4, opposite end communication node (CN): the node that can communicate with MN can be a stationary nodes, also can be mobile node, only needs to support the IPv6 agreement equally.If be mobile node, function will be identical with MN.
As shown in Figure 7, move detection by source network oMA, move to the handover operation particular flow sheet of nMA coverage as MN from source network oMA coverage for what the embodiment of the invention provided;
MN as shown in the figure enters the oMA coverage, and initiation communicates by letter with CN, and the handover operation idiographic flow that moves to the nMA coverage as MN is:
(1) after MN enters the oMA overlay network and obtains IP, will register the binding relationship of (or renewal) its ID and IP address at location server (LMS); Wherein, the address is oIP in oAN, and oMA is the mobile agent of oAN network; If the CN initiation is communicated by letter with MN's, need initiatively go the IP address of LMS inquiry MN by the ID of MN;
(2) MN initiatively initiates and the communicating by letter of CN by the CN address, shakes hands by 3 times, sets up to be connected with the TCP of CN, and begins to carry out session;
(3) MN moves to adjacency network nAN, and oMA judges that according to the MN positional information obtained and in abutting connection with the routing iinformation of network nAN MN is about to switch; OMA initiatively sends RtAdv (RouterAdvertisement, router advertisement message) to MN, informs the relevant information of the relevant address configuration of MN; Herein, according to the difference of network type, the method mutual about positional information is also different, and concrete condition is decided according to realization, does not make unified standard; Wherein, described network comprises: third generation partner program (3GPP, 3rd-Generation Partnership Project) network, System Architecture Evolution (SAE, System ArchitectureEvolvement), micro-wave access global inter communication (WiMAX, Worldwide Interoperability forMicrowave Access) or the like.
(4) MN is according to information in the RtAdv message, initiate the DHCPv6 flow process, send DHCPv6Solicit (Dynamic Host Configuration Protocol version6 Solicit to nMA, dhcp request message), oMA gives nMA as DHCPv6Relay (dynamic host configuration protocol relay) with this forwards;
(5) nMA returns DHCPv6Adv. (Dynamic HostConfiguration Protocol version6 Advertisement, DHCP notice message) by the oMA relaying to MN, indicates it to can be used as the DHCPv6 server of MN;
(6) MN sends DHCPv6Req. (Dynamic Host Configuration Protocolversion6Request dhcp request message) message to nMA, request distributing IP address; OMA is encapsulated in it in HI message after receiving the DHCPv6Req. message of MN transmission, together with the information such as oIP of MN, sends to nMA, initiates to switch;
(7) receive HI (the Handover Initiate that has DHCPv6Req. message (dhcp request message), switch and initiate message) after, to distribute the nIP that uses in the network for MN in the secondary IP address pond, simultaneously the nIP of distribution and the oIP of MN are bound temporarily, so that set up bidirectional tunnel; In addition, also will reply, send the Hack (Handover Acknowledge, handover acknowledge message) that is packaged with DHCPv6 Reply message to oMA HI message;
(8) after oMA receives HAck message, extract relevant information, finish bidirectional tunnel and set up, and continue DHCPv6 Reply message to be transmitted to MN as DHCPv6 Relay; At this moment, the bidirectional tunnel of the forwarding data of setting up for maintenance MN continuity between oMA and nMA has been set up and has been finished; Wherein, described extraction relevant information can comprise that in abutting connection with network be the nIP that mobile node distributed, and also can comprise the binding relationship of the oIP of nIP and MN, can also comprise that nMA confirms the operable acknowledge message of nIP for the MN distribution of being stored among the oMA.
(9) after MN receives DHCPv6 Reply message, can finish the configuration of nIP according to information wherein;
(10) MN continues to move to the nMA direction, disconnects with oMA being connected.After oMA detects MN and do not have connection, adopt store-and-forward mechanism,, carry out data forwarding to nMA by bidirectional tunnel;
(11) MN come that nMA covers behind network, carry out attachment flow, realize and being connected in abutting connection with network;
(12) MN adopts the nIP of configuration, sends DHCPv6 Confirm (DHCP acknowledge message) to nMA, the affirmation that request is used nIP; Simultaneously, MN has kept oIP also as required, the continuity of the communication session that carries out with CN before being used to keep switching;
(13) nMA returns DHCPv6 Reply message, and notice MN can use nIP in the adjacency network;
(14) nMA will be from CN, and sends to the oIP of MN by the packet that oMA transmits, thereby keeps the continuity in the handoff procedure;
(15) MN will carry out location update operations to location server, so that other CN node can pass through the inquiring position server, obtain MN current address (nIP) and will initiatively initiate communication.
As shown in Figure 8, move detection by MN, move to the handover operation particular flow sheet of nMA coverage as MN from source network oMA coverage for what the embodiment of the invention provided;
(1) also be that MN will arrive the binding relationship that position server (LMS) is registered (or renewal) its ID and IP address after interface 1 (InF1) obtains IP when MN enters the oMA overlay network; Wherein, MN address in oAN is oIP, and oMA is the mobile agent of oAN network; MN has two or more interfaces, and each interface adopts different wireless access technologys, uses InF1, and InF2 represents;
(2) MN is by the CN address, adopts InF1 initiatively to initiate and the communicating by letter of CN, and sets up to be connected with the TCP of CN, and begins to carry out session;
(3) MN moves to adjacency network nAN, moves detection technique by L2 and other, and judgement MN opens the InF2 interface after being about to take place switch between heterogeneous network; If be homogeneous network then use identical interface.The mode that the trigger condition of open here InF2 interface also can adopt InF2 that such wireless signal is scanned after wireless signal strength surpasses the thresholding that presets, can be carried out follow-up switching beamhouse operation;
(4) MN initiates router request message (RtSol) by InF2 to oMA, so that obtain the address configuration relevant information; Described relevant information comprises: initiate the information of acquisition request in abutting connection with routing iinformation and address configuration mode.Thereby can be according to the information of described address configuration mode, MN adopts the DHCPv6 agreement to carry out the IP address configuration.
(5) oMA returns router advertisement (RtAdv) message, and indication MN adopts the DHCPv6 agreement to carry out the IP address configuration in message, and neighbours are provided routing iinformation;
In addition, if in the switching flow that terminal is initiated, MN detect be about to switch after, if just in time received the RtAdv. message that oMA periodically sends, to no longer send RtSol message and carry out route requests, but, continue follow-up switching flow directly according to information in the RtAdv message of receiving.
(6) MN initiates the DHCPv6 flow process according to information in the RtAdv message by InF2, sends DHCPv6 Solicit message to nMA, and oMA gives nMA as DHCPv6 Relay with this forwards;
(7) nMA returns DHCPv6 Adv. message by the oMA relaying to the InF2 of MN, indicates it to can be used as the DHCPv6 server of MN;
(8) MN sends DHCPv6 Req. message by InF2 to nMA, request distributing IP address; Receive the DHCPv6 Req. message of MN transmission as oMA after, it is encapsulated in the HI message,, sends, initiate to switch to nMA together with the information such as oIP of MN;
(9) after nMA receives the HI message that has DHCPv6 Req. message, with in the secondary IP address pond for MN distributes the nIP that uses in the network, simultaneously the nIP that distributes and the oIP of MN are bound temporarily, so that set up bidirectional tunnel; In addition, also will reply, send the HAck message that is packaged with DHCPv6Reply message to oMA HI message;
(10) after oMA receives HAck message, extract relevant information, finish bidirectional tunnel and set up, and continue DHCPv6 Reply message to be transmitted to MN as DHCPv6 Relay; At this moment, the bidirectional tunnel of the forwarding data of setting up for maintenance MN continuity between oMA and nMA has been set up and has been finished;
(11) after the InF2 of MN receives DHCPv6 Reply message, can finish the configuration of nIP according to information wherein;
(12) MN continues to move to the nMA direction, the disconnection that is connected of its InF1 and oMA.After oMA detects MN and do not have connection, adopt store-and-forward mechanism,, carry out data forwarding to nMA by bidirectional tunnel;
(13) MN move to that nMA covers behind network, carry out attachment flow by InF2, realize and new being connected of network;
(14) InF2 of MN adopts the nIP of configuration, sends DHCPv6 Confirm message, the affirmation that request is used nIP to nMA; Simultaneously, InF2 has disposed oIP also as required, the continuity of the communication session that carries out with CN before being used to keep switching;
(15) nMA returns DHCPv6 Reply message, and notice MN can use nIP in new network;
(16) nMA preserves the oIP information of MN, will be from CN, and send to the oIP address of the InF2 of MN by the packet that oMA transmits, thus keep the continuity in the handoff procedure;
(17) MN will carry out location update operations to location server by InF2, so that other CN node can pass through the inquiring position server, obtain MN current address nIP and will initiatively initiate communication.
Fast switch over method and device that the embodiment of the invention provides based on decentralization mobile management business structure, the embodiment of the invention is by in the source network coverage, when mobile node moves to the adjacency network, obtain mobile node in the positional information of source network, in abutting connection with network routing iinformation and mobile node destination address configuration information at the adjacency network, thereby entering into before the network at mobile node, is the destination address configuration information of mobile node configuration in abutting connection with network.When mobile node entered in abutting connection with network, then can save was that mobile node disposed in abutting connection with the time of the destination address configuration information of network, thereby has shortened the switching time of mobile node.Meanwhile, pass through obtain the positional information of source network and in abutting connection with network routing iinformation and mobile node in abutting connection with the destination address configuration information of network, set up bidirectional tunnel.Thereby not only switch to from source network in abutting connection with the process of network, can carry out transfer of data, keep the continuity of mobile node in handoff procedure, and it is simple to set up the signaling process of bidirectional tunnel by described bidirectional tunnel at mobile node.In prior art,, realize complexity, and cause Signalling exchanges a large amount of between the MA because the SHIM6 agreement is not a lightweight protocol; And MN switches to when communicating in abutting connection with network from source network crossing over MA, can't obtain fast in abutting connection with the network information, and finish relevant configuration and compare, the embodiment of the invention not only can be set up bidirectional tunnel by simple signaling process, guarantee the continuity of mobile node in handoff procedure, and moving to before network by mobile node, be the destination address configuration information of mobile node configuration, carry out in abutting connection with the switching time of the destination address configuration information of network moving to behind network thereby shortened mobile node in abutting connection with network.
Through the above description of the embodiments, one of ordinary skill in the art will appreciate that: realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, comprise step as above-mentioned method embodiment, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, based on the fast switch over method of decentralization mobile management business structure, it is characterized in that, comprising:
In the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
In the positional information of source network and in abutting connection with the network routing iinformation, obtain the destination address configuration information of mobile node according to described mobile node at the adjacency network;
When mobile node switches to behind network from source network, be mobile node configuration purpose address information.
2, according to the described fast switch over method of claim 1 based on decentralization mobile management business structure, it is characterized in that, described according to described mobile node in the positional information of source network and in abutting connection with the network routing iinformation, obtain mobile node after the step of the destination address configuration information of adjacency network, comprising:
According to address configuration information and the destination address configuration information of described mobile node, set up bidirectional tunnel at source network;
Survey mobile node and source network do not have be connected after, the communication data of mobile node and peer node is carried out the storage forwarding by bidirectional tunnel.
According to claim 1 or 2 described fast switch over method, it is characterized in that 3, the described mobile node that obtains comprises in the positional information of source network and after the step of network routing iinformation based on decentralization mobile management business structure:
In the positional information of source network and in abutting connection with the network routing iinformation, judge whether mobile node is about to switch according to described mobile node.
According to claim 1 or 2 described fast switch over method, it is characterized in that 4, the described step of obtaining mobile node at the destination address configuration information of adjacency network comprises based on decentralization mobile management business structure:
Affirmation will be as the server of mobile node in abutting connection with networks mobile agent;
To be packaged with source network address configuration information and mobile node request and distribute, send to the adjacency networks mobile agent in abutting connection with the switching initiation message message of the destination address configuration information of network;
Receive handover acknowledge message message, obtain the destination address configuration information of mobile node at the adjacency network.
5, according to claim 1 or 2 described fast switch over method based on decentralization mobile management business structure, it is characterized in that described mobile node switches in abutting connection with network from source network, the step for mobile node configuration purpose address information comprises:
Mobile node enters in network coverage from source network, described mobile node with connect in abutting connection with network;
Mobile node according to described in abutting connection with network destination address configuration information, with adjacency network validation destination address configuration information;
Mobile node is the destination address configuration information with the source address configuration information update and keeps its address configuration information at source network.
6, based on the apparatus for fast switching of decentralization mobile management business structure, it is characterized in that, comprising:
Information acquisition unit: be used in the source network coverage, mobile node moves to the adjacency network, obtains mobile node in the positional information of source network and in abutting connection with the network routing iinformation;
Destination address configuration information acquiring unit: be used for according to described mobile node obtaining the destination address configuration information of mobile node at the adjacency network in the positional information of source network and in abutting connection with the network routing iinformation;
Address information dispensing unit: be used for mobile node and switch in abutting connection with network, be mobile node configuration purpose address information from source network.
7, according to the described apparatus for fast switching of claim 6, it is characterized in that, also comprise based on decentralization mobile management business structure:
The unit is set up in the tunnel: be used for setting up bidirectional tunnel according to the address configuration information and the destination address configuration information of described mobile node at source network;
Probe unit: be used to survey mobile node and source network do not have be connected after, the communication data of mobile node and peer node is carried out storage by bidirectional tunnel transmits.
8, according to claim 6 or 7 described apparatus for fast switching, it is characterized in that, also comprise based on decentralization mobile management business structure:
Judging unit: be used for according to described mobile node in the positional information of source network and in abutting connection with the network routing iinformation, judge that mobile node is about to switch.
According to claim 6 or 7 described apparatus for fast switching, it is characterized in that 9, described destination address configuration information acquiring unit comprises based on decentralization mobile management business structure:
The validation of information subelement: being used to confirm will be as the server of mobile node in abutting connection with networks mobile agent;
Information sends subelement: be used for distributing in abutting connection with the HI message of the destination address configuration information of network being packaged with source network address configuration information and mobile node request, send to the adjacency networks mobile agent;
Receive subelement: be used to receive Hack message, obtain the destination address configuration information of mobile node at the adjacency network.
10, according to claim 6 or 7 described apparatus for fast switching, it is characterized in that described address information dispensing unit comprises based on decentralization mobile management business structure:
Subelement connects: be used for mobile node and enter in network coverage from source network, described mobile node with connect in abutting connection with network;
Address configuration information is confirmed subelement: be used for mobile node according to described in abutting connection with network destination address configuration information, with adjacency network validation destination address configuration information;
The information updating storing sub-units: to be used for mobile node be the destination address configuration information with the source address configuration information update and keep its address configuration information at source network.
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| CN1315336C (en) * | 2003-08-26 | 2007-05-09 | 华为技术有限公司 | Handover method based on positioning information |
| CN101111058A (en) * | 2006-07-18 | 2008-01-23 | 华为技术有限公司 | Method and system for preventing package loss in switching course |
| CN101175316B (en) * | 2006-10-30 | 2010-05-19 | 华为技术有限公司 | Method for cross-local mobile administrative domain switch-over and its communication system |
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| CN109089246B (en) * | 2018-08-09 | 2021-04-06 | Oppo广东移动通信有限公司 | Data transmission method and related product |
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