CN101594609A - When not switching between same area, keep continuous method, system and the node of session - Google Patents
When not switching between same area, keep continuous method, system and the node of session Download PDFInfo
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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Abstract
The invention discloses and a kind ofly when not switching between same area, keep continuous method, system and the node of session, belong to moving communicating field.Described method comprises: mobile node is in the session connection of first mobile domains foundation with communication node; When described mobile node switches to second mobile domains from first mobile domains, utilize before switching in the anchor point device address information realization of first mobile domains storage and the session of described communication node.Described system comprises: mobile node and information-storing device.Described node comprises: acquisition module and conversation module.When technical scheme provided by the invention was switched between first mobile domains and second mobile domains when mobile node, the anchor point device address information of preserving before the mobile node utilization is switched guaranteed that mobile node keeps not interrupting continuously with the session of communication node when not switching between same area.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of continuous method, system and node of session that when not switching between same area, keep.
Background technology
Mobile IP technology is as the technology of network layer mobile management, has with lower floor's access protocol and physical transmission medium irrelevantly, and upper-layer protocol is used characteristics such as transparent.Agreement about mobile IP mainly contains two kinds: Mobile Internet Protocol version 6 (MobileInternet Protocol version 6, MIPv6) and proxy mobile internet protocol version 6 (Proxy Mobile Internet Protocolversion 6, PMIPv6).
MIPv6 has guaranteed that (Mobile Node, when address MN) changed, (Correspondent Node still can keep proper communication between CN), and promptly address modification does not influence upper layer communication for MN and communication node when mobile node.
MIPv6 keeps the continuous solution of communication can reduce 3 points simply for being implemented in the network layer moving process:
(1) defined home address (Home Address, HoA).Upper layer communication is used the omnidistance HoA of use, has guaranteed mobile transparent to what use;
(2) defined Care-of Address (Care-of-Address, CoA).Obtain CoA from field network, guaranteed that communication can reach under the existing route pattern;
(3) set up the mapping relations of HoA and CoA, made the employed network layer sign of upper layer application set up relation between identifying with the employed purpose of network layer route.
MN and the CN concrete workflow in the MIPv6 territory can simply be summarized as follows:
As MN during at home link, communicate according to traditional route technology between it and the CN, do not need the intervention of MIPv6.
When MN moved to foreign link, the home address of MN remained unchanged, and obtained interim IP address, i.e. a CoA simultaneously.MN the mapping relations of HoA and CoA by Binding Update (Banding Update, BU) message is informed HA (Home Agent, home agent), the home address of MN is still used in communicating by letter between MN and the CN, packet still mails to the home link of MN; HA intercepts and captures these packets, by the tunnel packet is transmitted to the network at the CoA place of MN according to acquired mapping relations.
As another kind of communication mode, MN can inform CN to the mapping relations of HoA and CoA, known the CoA of MN as CN after, can directly packet be forwarded to the nonlocal network segment at its CoA place, just can directly carry out proper communication between MN and the CN like this.This communication process also is known as the communication process behind the routing optimality.
The purpose of PMIPv6 is to provide a kind of based on network mobility management protocol.MN need not to participate in any mobile management signaling in the PMIPv6 territory, the mobile entity in the network is followed the tracks of moving of MN, and initialization mobile signaling protocol and the routing state of setting up signal post's need.
In the PMIPv6 territory core functional entities be local mobile anchor (Local Mobility Anchor, LMA) and Mobile Access Gateway (Mobile Access Gateway, MAG).LMA is responsible for safeguarding the state of reachability of MN, and on topology as home network prefix (Home Network Prefix, anchor point HNP) of MN.On behalf of MN, MAG carry out the entity of mobile management, is responsible for surveying moving of MN on its access link, and sends the LMA of PBU message to MN.
When MN enters the PMIPv6 territory, the MAG on the access link will confirm at identification MN and after obtaining its sign whether MN is authorized to the network mobility management service.If system validation need provide the network mobility management service to MN, system will guarantee any address configuration mechanism that MN uses network to allow, and make the address configuration on the MN acquisition interface, and move everywhere in the PMIPv6 territory.The address configuration that obtains comprises the address and the configuration of other relevant parameter of default router on address from its HNP, the link.From the angle of MN, whole PMIPv6 territory can be considered a single link, and system guarantees that the address configuration of MN acquisition is constant, and thinks that all the time it is on same link.
If MN is connected to the PMIPv6 territory simultaneously by a plurality of interfaces, LMA will be unique HNP of each interface assignment, make interface basis HNP separately dispose home address.If MN switches to another interface from an interface in identical PMIPv6 territory, LMA will distribute identical HNP to new interface.
LMA receives any message that is sent to MN as the topological anchor point of MN.LMA is forwarded to MAG by bidirectional tunnel with message after receiving that the destination address prefix is the message of HNP of MN.MAG receives encapsulated message, removes outer heading, and is forwarded to the MN on the access link.
MAG after receiving the message of any CN of being sent to, will be forwarded to LMA with message as a default gateway on the access link by bidirectional tunnel.After LMA receives encapsulated message, remove outer heading, and the route message is to the destination.
After MN obtains initial address configuration in the PMIPv6 territory, if MN changes its access link, the MAG on the new access link will send signaling to LMA, be used for upgrading binding and routing state.MN will continue to receive that (Router Advertisement, RA) message make MN believe it still on same link, and MN use identical address configuration on new access link for the router advertisement that comprises its corresponding HNP.
In the practical application, following application scenarios is arranged:
As MN during in the PMIPv6 territory, after the MN bootstrapping, MAG is by the HNP of corresponding approach acquisition LMA address and MN.MN uses HNP to dispose corresponding HoA, and communicates with CN.After MN switched to the MIPv6 territory, MN obtained the HA address by relational approach, if the HA address is different from previous LMA address, MN will be assigned with the HNP1 that is different from previous HNP so, and MN will be according to the new new HoA1 of HNP1 configuration like this.And the CN that communicates by letter with MN in the PMIPv6 territory still uses the previous HoA of MN to send message to MN as destination address, but the home address of MN has become HoA1 at this moment, so the message that CN sends will be lost, causes conversation.Otherwise, when MN when the MIPv6 territory moves to the PMIPv6 territory, similar problem can take place equally.
In sum, when MN switches between PMIPv6 territory and MIPv6 territory, because the difference of LMA address/HA address can cause the interruption of session.
Summary of the invention
In order to make mobile node keep not interrupting with the session of communication node when not switching between same area, the embodiment of the invention provides a kind of continuous method, system and node of session that keep when not switching between same area.Described technical scheme is as follows:
A kind ofly keep the continuous method of session when not switching between same area, described method comprises:
Mobile node is in the session connection of first mobile domains foundation with communication node;
When described mobile node switches to second mobile domains from first mobile domains, utilize before switching in the anchor point device address information realization of first mobile domains storage and the session of described communication node.
A kind of mobile node, described mobile node comprises:
Acquisition module, be used for when described mobile node when first mobile domains switches to second mobile domains, obtain the anchor point device address information of preserving at first mobile domains before switching;
Conversation module is used to utilize described anchor point device address information in the session of second mobile domains realization with described communication node.
A kind of continuous system of session that keeps, described system comprises:
Mobile node and information-storing device;
Described information-storing device is preserved described mobile node from the anchor point device address information of first mobile domains before second mobile domains switches;
When described mobile node switched to second mobile domains from first mobile domains, the anchor point device address information of utilizing described information-storing device to preserve realized the session with communication node.
The described technical scheme of the embodiment of the invention when mobile node when first mobile domains and second mobile domains switch, anchor point device address information and the communication node at first mobile domains preserved before the mobile node utilization is switched carry out session, can guarantee that mobile node keeps not interrupting continuously with the session of communication node when not switching between same area.
Description of drawings
Fig. 1 is that a kind of that the embodiment of the invention 1 provides keeps the schematic diagram of the continuous method of mobile node session when not switching between same area when the PMIPv6 territory switches to the MIPv6 territory as MN;
Fig. 2 is that a kind of that the embodiment of the invention 1 provides keeps the schematic diagram of the continuous method of mobile node session when not switching between same area when the MIPv6 territory switches to the PMIPv6 territory as MN;
To be the another kind that provides of the embodiment of the invention 2 keep the schematic diagram of the continuous method of mobile node session when not switching between same area as MN to Fig. 3 when the PMIPv6 territory switches to the MIPv6 territory;
To be the another kind that provides of the embodiment of the invention 2 keep the schematic diagram of the continuous method of mobile node session when not switching between same area as MN to Fig. 4 when the MIPv6 territory switches to the PMIPv6 territory;
To be the another kind that provides of the embodiment of the invention 3 keep the schematic diagram of the continuous method of mobile node session when not switching between same area as MN to Fig. 5 when the PMIPv6 territory switches to the MIPv6 territory;
Fig. 6 is the structural representation of the mobile node that provides of the embodiment of the invention 4;
Fig. 7 is the structural representation of the continuous system of the maintenance session that provides of the embodiment of the invention 4.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
The embodiment of the invention provides a kind of mobile node continuous method of session when not switching between same area that keeps; this method is by authentication (Authentication Authorization and Accounting; AAA) server is preserved the anchor point device address information; when MN switches between PMIPv6 territory and MIPv6 territory; aaa server was preserved before MN utilized and switches anchor point device address information and communication node carry out session, thereby can guarantee that normal conversation can not interrupted continuously between MN and the CN.Wherein, anchor point device specifically refers to LMA in the PMIPv6 territory, specifically refers to HA in the MIPv6 territory.Switching to MIPv6 territory and MN from the PMIPv6 territory at MN respectively below switches to these two kinds of application scenarioss of PMIPv6 territory and is described in detail from the MIPv6 territory.
As shown in Figure 1, move to the application scenarios in MIPv6 territory from the PMIPv6 territory at MN, the concrete steps of present embodiment are as follows:
101:MN is connected to a certain access link in PMIPv6 territory, and the MAG on this access link obtains the sign of MN, and sends PBU message to LMA, comprises the MN relevant informations such as sign of MAG address, MN in this PBU message.
102:LMA receives PBU message, for MN distributes unique HNP, and send to insert request (accessrequest) message to aaa server, and whether legal authorization of requests verification MAG, this access request message comprises the MN relevant informations such as HNP, MN sign of MAG address, LMA address, MN.
Need to prove that the bearing mode of above-mentioned information depends on the concrete form that inserts request message, as realizing by the AVP in the definition AAA message (Attribute Value Pair, property value to) attribute.
The 103:AAA server receives and inserts request message, whether legal authorization of checking MAG, if the MAG legal authorization is then returned to LMA and is inserted response (access reply) message, and the MN relevant informations such as HNP, MN sign of preserving the MAG address inserted in the request message, LMA address, MN.
Wherein, insert the information that response message comprises checking MAG legal authorization.
104:LMA receives and inserts response message, sends agent binding according to the information that inserts the checking MAG legal authorization in the response message to MAG and confirms (Proxy Banding Acknoledgement, PBA) message.
Other, repeats no more because of irrelevant with the embodiment of the invention in the step in PMIPv6 territory.
105: when MN when the PMIPv6 territory switches to the MIPv6 territory, the couple in router in MIPv6 territory (Access Router, AR) by and aaa server between finish access authentication alternately to MN, in the access authentication procedure of MN, AR obtains MN in the LMA in PMIPv6 territory address information and other MN relevant information from aaa server.
Concrete, AR sends AAA request message, acquisition request MN relevant information to aaa server.
Aaa server receives the AAA request message, MN is carried in the AAA response message in MN relevant informations such as the LMA in PMIPv6 territory address informations sends to AR's.
AR obtains MN in MN relevant informations such as the LMA in PMIPv6 territory address informations from the AAA response message that receives, and sends RA message to MN, comprises the foreign link prefix information in this RA message.
106:MN is according to the configuration of the foreign link prefix information in RA message CoA, and to AR transmission DHCP (Dynamic Host Configuration Protocol, DHCP) Request (request) message, request obtains the relevant information of MN, comprise LMA address, the information such as HNP obtained.
After 107:AR receives DHCP Request message, if AR is DHCP relay (relaying), then in DHCP Request message, increase relay (relaying) option, this relay option carries the LMA address information that obtains from aaa server, and the DHCP Request message that will carry the LMA address information sends to DHCP server, then execution in step 108-110; If AR is DHCP proxy (agency), then directly return DHCP reply message to MN, carry the MN that obtains from aaa server in this DHCP reply message in the LMA in PMIPv6 territory address information, MN utilizes the LMA address information and the CN that obtain from DHCP reply message to carry out session.
After 108:DHCP server receives DHCP Request message, return DHCP reply message to AR, this DHCPreply message is carried the MN that obtains from AR in the LMA in PMIPv6 territory address information.
109:AR relaying DHCP Reply message is to MN.
110:MN receives DHCP Reply message, obtains its LMA address information in the PMIPv6 territory, utilizes the LMA address information foundation of acquisition and the tunnel between the LMA, by the session of this tunnel realization with CN.
Need to prove, in the MIPv6 territory, after MN gets access to the address information of LMA, can think that this address is the address of home agent, so utilize the tunnel between this address foundation and the LMA.
As shown in Figure 2, move to the application scenarios in PMIPv6 territory from the MIPv6 territory at MN, the concrete steps of present embodiment are as follows:
201:MN finishes the access authentication in the MIPv6 territory, obtains the HA address by relational approach in the bootstrapping process.
MN obtains the HA address in the bootstrapping process be prior art, repeats no more.
202:MN sends BU message to HA, comprises CoA, the HoA of MN and the information such as sign of MN in this BU message
203:HA receives BU message, for MN distributes a unique HNP, and to aaa server transmission access request message, comprises the MN relevant informations such as sign of HA address, MN in this access request message.
The 204:AAA server receives and inserts request message, returns the access response message to HA, and HA address in the preservation access request message and the relevant information of other MN.
205:HA receives and inserts response message, sends binding acknowledgement (Bangding Acknowledgement, BA) message to MN.
, repeat no more because of irrelevant in other step in MIPv6 territory with the embodiment of the invention.
206: when MN when the MIPv6 territory switches to the PMIPv6 territory, MAG obtains the sign of MN in the MN access authentication procedure, and sends the AAA request message to aaa server, acquisition request MN is in the HA in MIPv6 territory address information.
The 207:AAA server receives the AAA request message, and MN is carried in the AAA response message in the HA in MIPv6 territory address information sends to MAG.
208:MAG receives the AAA response message, obtains MN in the HA in MIPv6 territory address information, and utilizes between the HA address information obtained and the HA and set up the tunnel.
Need to prove, in the PMIPv6 territory, after MAG gets access to the address information of HA, can think that this address is the address of local mobile anchor, so utilize the tunnel between this address foundation and the LMA.
209:MN utilizes the tunnel and the CN that set up between MAG and the HA to carry out session.
The embodiment of the invention is preserved the anchor point device address information by aaa server, when MN switches between PMIPv6 territory and MIPv6 territory, the anchor point device address information and the CN that preserve on the aaa server before MN utilizes and switches carry out session, thereby can guarantee that session is not interrupted continuously between MN and the CN.
Embodiment 2
As different from Example 1, be to preserve the anchor point device address information in the present embodiment with information-storing device, when MN switched between PMIPv6 territory and MIPv6 territory, anchor point device address information and CN that MN utilizes information memory cell to preserve carried out session.(Domain Name Server DNS) is example to information-storing device, but is not limited to DNS in the practical application with name server in the present embodiment.Wherein, anchor point device specifically refers to LMA in the PMIPv6 territory, specifically refers to HA in the MIPv6 territory.Switching to MIPv6 territory and MN from the PMIPv6 territory at MN respectively below switches to these two kinds of application scenarioss of PMIPv6 territory and is described in detail from the MIPv6 territory.
As shown in Figure 3, move to the application scenarios in MIPv6 territory from the PMIPv6 territory at MN, the concrete steps of present embodiment are as follows:
301:MN finishes access authentication in the PMIPv6 territory.
302:MAG sends PBU message to LMA, asks to register for MN.
303:LMA receives PBU message, if MN succeeds in registration, then sends the DNS update inquiry information to DNS, carries the MN relevant informations such as LMA address, home network prefix, the sign of MN, many interface messages of MN in this DNS update inquiry information.
Concrete update inquiry information depends on the selection of concrete information stores network element, owing to be to adopt DNS as information-storing device in the present embodiment, the form of update inquiry information meets the standard of DNS message format so.
304:DNS receives the DNS update inquiry information, preserves the MN relevant informations such as LMA address, home network prefix, the sign of MN, many interface messages of MN in the DNS update inquiry information, and returns the renewal response message to LMA.
305:LMA sends PBA message to MAG after receiving and upgrading response message.
Other, repeats no more because of irrelevant with the embodiment of the invention in the step in PMIPv6 territory.
306: when MN when the PMIPv6 territory switches to the MIPv6 territory, send the DNS request message to DNS, the relevant information of request MN.
307:DNS receives the DNS request message, the MN that self stores is carried in the DNS response message in the LMA in PMIPv6 territory address information sends to MN.
308:MN receives the DNS response message, obtains MN in the LMA in PMIPv6 territory address information, and utilize the LMA address information of obtaining set up and LMA between the tunnel, realize session with CN by described tunnel.
Need to prove, in the MIPv6 territory, after MN gets access to the address information of LMA, can think that this address is the address of home agent, so utilize the tunnel between this address foundation and the LMA.
As shown in Figure 4, move to the application scenarios of PMIPv6 from territory, MIPv6 territory at MN, the concrete steps of present embodiment are as follows:
401:MN finishes the access authentication in the MIPv6 territory.
402:MN sends BU message to HA, and request is registered.
403:HA is after receiving BU message, if for MN succeeds in registration, then send BA message, and send the DNS update inquiry information, carry the MN relevant informations such as HA address, home network prefix, the sign of MN, many interface messages of MN in this DNS update inquiry information to DNS to MN.
Concrete steps and above-mentioned steps 303 are similar, repeat no more.
404:DNS receives this DNS update inquiry information, preserves the MN relevant informations such as HA address, home network prefix, the sign of MN, many interface messages of MN in this DNS update inquiry information, and returns DNS to HA and upgrade response message, informs and upgrades successfully.
405:HA receives DNS and upgrades response message, sends BA message to MN.
Other, repeats no more because of irrelevant with the embodiment of the invention in the step in MIPv6 territory.
406: when MN when the MIPv6 territory switches to the PMIPv6 territory, initiate the access authentication request to MAG, this access authentication request comprises the MN relevant informations such as sign of MN.
407:MAG sends DNS request message, acquisition request MN relevant information to DNS after the sign that obtains MN.
408:DNS receives the DNS request message, MN is carried in the DNS response message in the HA in MIPv6 territory address information sends to MAG.
409:MAG receives the DNS response message, obtains MN in the HA in MIPv6 territory address information, and utilizes the HA address information of obtaining with setting up the tunnel between the HA.
Need to prove, in the PMIPv6 territory, after MAG gets access to the address information of HA, can think that this address is the address of local mobile anchor, so utilize the tunnel between this address foundation and the LMA.
410:MN utilizes the tunnel of setting up between MAG and the HA to carry out session with CN.
The embodiment of the invention is preserved the anchor point device address information by information-storing device, when MN switches between PMIPv6 territory and MIPv6 territory, preservation anchor point device address information and CN carry out session on the preceding information-storing device of MN utilization switching, thereby can guarantee that session is not interrupted continuously between MN and the CN.
Embodiment 3
As different from Example 1, present embodiment is to preserve MN in the LMA in PMIPv6 territory address information by MAG, when MN when the PMIPv6 territory moves to the MIPv6 territory, AR obtains and preserves MN in the LMA in PMIPv6 territory address information from MAG, and MN offered MAG in the LMA in PMIPv6 territory address information, MAG utilizes this LMA address information and HA to set up the tunnel, and MN utilizes tunnel and the CN between MAG and the HA to carry out session, thereby can guarantee that session is not interrupted continuously between MN and the CN.As shown in Figure 5, the concrete steps of present embodiment are as follows:
501:MN is when the PMIPv6 territory, and MAG obtains and preserve the LMA address by relational approach.
MAG is that prior art repeats no more by the process that relational approach obtains the LMA address.
502: when MN when the PMIPv6 territory switches to the MIPv6 territory, obtain and preserve LMA address and other MN relevant information by context request/response message between the MAG in AR and the PMIPv6 territory.
Concrete, the method that AR obtains LMA address and other MN relevant information mainly contains:
The first, AR sends context request message to MAG, acquisition request LMA address information and other MN relevant information; After MAG receives context request message, LMA address and other MN relevant information carried send to AR in the context response information; AR receives context response information, and preserves LMA address information and other MN relevant information in the context response information.
The second, MAG directly informs AR with LMA address information and other MN relevant information by being carried at context transfer message; AR obtains and preserves LMA address and other MN relevant information.
503:MN finishes access authentication in the MIPv6 territory.
504:MN obtains the CoA in MIPv6 territory on access link, and sends DHCP Request message to AR, and acquisition request MN relevant information comprises relevant informations such as LMA address, HNP.
After 505:AR receives DHCP Request message, if AR is DHCP relay (relaying), then in DHCP Request message, increase relay (relaying) option, this relay option carries the LMA address information of acquisition, and this DHCP Request message of carrying the LMA address information sent to DHCP server, and execution in step 506-508; If AR is DHCPproxy (agency), then directly return DHCP reply message to MN, carry the LMA address information in this DHCP reply message, MN obtains the LMA address information in the PMIPv6 territory, and utilizes the LMA address information of obtaining to carry out session with CN.
After 506:DHCP server receives DHCP Request message, return DHCP reply message to AR, this DHCPreply carries the LMA address information that obtains from AR.
507:AR relaying DHCP Reply message is to MN.
508:MN receives DHCP Reply message, obtains its LMA address information when the PMIPv6 territory, and utilize the LMA address information of obtaining set up and LMA between the tunnel, carry out normal conversation by this tunnel and CN.
Need to prove, in the MIPv6 territory, after MN gets access to the address information of LMA, can think that this address is the address of home agent, so utilize the tunnel between this address foundation and the LMA.
The embodiment of the invention is preserved MN in the LMA in PMIPv6 territory address information by the MAG in PMIPv6 territory, when MN when the PMIPv6 territory switches to the MIPv6 territory, the AR in MIPv6 territory obtains and preserves MN in the LMA in PMIPv6 territory address information from MAG, and MN offered MN in the LMA in PMIPv6 territory address information, MN utilizes this LMA address information and HA (being the LMA in PMIPv6 territory) to set up the tunnel, MN utilizes this tunnel and CN to carry out session, thereby can guarantee that session is not interrupted continuously between MN and the CN.
Embodiment 4
The embodiment of the invention provides a kind of mobile node, and the concrete functional description of this mobile node is as follows: mobile node is set up session connection with communication node at first mobile domains.
When mobile node from when first mobile domains switches to second mobile domains, utilize the anchor point device address information of preserving at first mobile domains before switching to realize session with communication node.
The situation of the anchor point device address information realization of preserving at first mobile domains before wherein, utilization is switched and the session of communication node can be divided into two kinds:
The first, mobile node utilizes described anchor point device address information and anchor point device to set up the tunnel, and utilizes this tunnel in the session of second mobile domains realization with communication node.
The second, mobile node utilizes the tunnel of setting up between Mobile Access Gateway MAG and the anchor point device to realize and the session of communication node that at second mobile domains this tunnel is utilized from the anchor point device address information of first mobile domains preservation by Mobile Access Gateway MAG and sets up between anchor point device.
Need to prove that first mobile domains is the PMIPv6 territory, second mobile domains is the MIPv6 territory; Or first mobile domains be the MIPv6 territory, second mobile domains is the PMIPv6 territory.
As shown in Figure 6, a kind of typical mobile node comprises:
Acquisition module, be used for when mobile node when first mobile domains switches to second mobile domains, obtain the anchor point device address information of preserving at first mobile domains before switching;
Conversation module is used to utilize between the anchor point device address information obtained and the anchor point device and sets up the tunnel, and utilizes the tunnel set up to realize session with communication node at second mobile domains.
The embodiment of the invention provides a kind of continuous system of session that keeps, and as shown in Figure 7, this system comprises:
Mobile node and information-storing device;
Information-storing device is preserved mobile node from the anchor point device address information of first mobile domains before second mobile domains switches;
When mobile node switches to second mobile domains from first mobile domains, utilize the anchor point device address information of on the information storage device of first mobile domains, preserving before switching, in the session of second mobile domains realization with communication node.
Wherein, information-storing device is aaa server or Mobile Access Gateway MAG, and this aaa server or Mobile Access Gateway MAG preserve mobile node from the anchor point device address information of PMIPv6 territory before switch in the MIPv6 territory of second mobile domains as first mobile domains; Correspondingly, when mobile node specifically is used for switching to from the PMIPv6 territory as first mobile domains as the MIPv6 territory of second mobile domains, the anchor point device address information of on the aaa server in PMIPv6 territory or Mobile Access Gateway MAG, preserving before the couple in router AR by the MIPv6 territory obtains to switch, utilize anchor point device address information and anchor point device to set up the tunnel, and utilize this tunnel in the session of MIPv6 territory realization with communication node.
Wherein, information-storing device is a domain name server (DNS), and this domain name server (DNS) is preserved mobile node from the anchor point device address information of PMIPv6 territory before switch in the MIPv6 territory of second mobile domains as first mobile domains; Correspondingly, when mobile node specifically is used for switching to from the PMIPv6 territory as first mobile domains as the MIPv6 territory of second mobile domains, obtain the preceding anchor point device address information of preserving of switching from domain name server (DNS) in the PMIPv6 territory, utilize institute's anchor point device address information and anchor point device to set up the tunnel, and utilize this tunnel in the session of MIPv6 territory realization with communication node.
Wherein, when information-storing device was aaa server or domain name server (DNS), this aaa server or domain name server (DNS) were preserved mobile node from the anchor point device address information of MIPv6 territory before switch in the PMIPv6 territory of second mobile domains as first mobile domains; Correspondingly, mobile node specifically is used to utilize the tunnel between Mobile Access Gateway MAG and the anchor point device to realize session with communication node in the PMIPv6 territory, and this tunnel utilizes the anchor point device address information of obtaining from aaa server or domain name server (DNS) to set up between anchor point device by Mobile Access Gateway MAG.
The described technical scheme of the embodiment of the invention at mobile node when first mobile domains switches to second mobile domains, anchor point device address information and the communication node preserved before the mobile node utilization is switched carry out session, can guarantee that mobile node keeps not interrupting continuously with the session of communication node when not switching between same area.
The technical scheme that above embodiment provides can realize that software is stored on the storage medium that can read by hardware and software, as the floppy disk of computer, and hard disk or CD etc.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1, a kind ofly when not switching between same area, keep the continuous method of session, it is characterized in that described method comprises:
Mobile node is in the session connection of first mobile domains foundation with communication node;
When described mobile node switches to second mobile domains from first mobile domains, utilize before switching in the anchor point device address information realization of first mobile domains storage and the session of described communication node.
2, as claimed in claim 1ly when not switching between same area, keep the continuous method of session, it is characterized in that,
Described first mobile domains is the PMIPv6 territory, and described second mobile domains is the MIPv6 territory; Or
Described first mobile domains is the MIPv6 territory, and described second mobile domains is the PMIPv6 territory.
3, as claimed in claim 2ly when not switching between same area, keep the continuous method of session, it is characterized in that,
When described mobile node switches to second mobile domains from first mobile domains, utilize the anchor point device address information of storing at first mobile domains before switching to realize specifically comprising with the session of described communication node:
When described mobile node switches to as the MIPv6 territory of second mobile domains from the PMIPv6 territory as first mobile domains, obtain the anchor point device address information of preserving in the PMIPv6 territory before switching;
Described mobile node utilizes the tunnel between described anchor point device address information foundation and the described anchor point device, utilizes described tunnel in the session of MIPv6 territory realization with described communication node.
4, as claimed in claim 3ly when not switching between same area, keep the continuous method of session, it is characterized in that,
When described mobile node switches to as the MIPv6 territory of second mobile domains from the PMIPv6 territory as first mobile domains, obtain the anchor point device address information of storing in the PMIPv6 territory before switching and specifically comprise:
Described mobile node obtains to switch preceding anchor point device address information of preserving in the PMIPv6 territory by the couple in router AR in described MIPv6 territory from aaa server; Or
Described mobile node switches preceding anchor point device address information in the PMIPv6 territory by the couple in router AR in described MIPv6 territory from the Mobile Access Gateway MAG acquisition in PMIPv6 territory.
5, as claimed in claim 2ly when not switching between same area, keep the continuous method of session, it is characterized in that,
When described mobile node switches to as the MIPv6 territory of second mobile domains from the PMIPv6 territory as first mobile domains, obtain the anchor point device address information of storing in the PMIPv6 territory before switching and specifically comprise:
Described mobile node obtains to switch preceding anchor point device address information in the PMIPv6 territory from domain name server (DNS).
6, as claimed in claim 2ly when not switching between same area, keep the continuous method of session, it is characterized in that,
When described mobile node switches to as the PMIPv6 territory of second mobile domains from the MIPv6 territory as first mobile domains, utilize the anchor point device address information of storing at first mobile domains before switching to realize specifically comprising with the session of described communication node:
Described mobile node utilizes the Mobile Access Gateway MAG in PMIPv6 territory and the tunnel between the described anchor point device to realize and the session of described communication node that described tunnel utilizes described anchor point device address information to set up by the Mobile Access Gateway MAG in described PMIPv6 territory between described anchor point device.
7, a kind of mobile node is characterized in that, described mobile node comprises:
Acquisition module, be used for when described mobile node when first mobile domains switches to second mobile domains, obtain the anchor point device address information of preserving at first mobile domains before switching;
Conversation module is used to utilize described anchor point device address information in the session of second mobile domains realization with described communication node.
8, mobile node as claimed in claim 7 is characterized in that, described conversation module comprises:
Submodule is set up in the tunnel, is used to utilize described anchor point device address information and anchor point device to set up the tunnel;
The session submodule is used to utilize described tunnel in the session of second mobile domains realization with described communication node.
9, a kind of continuous system of session that keeps is characterized in that described system comprises:
Mobile node and information-storing device;
Described information-storing device is stored described mobile node from the anchor point device address information of first mobile domains before second mobile domains switches;
When described mobile node switched to second mobile domains from first mobile domains, the anchor point device address information of utilizing described information-storing device to preserve realized the session with communication node.
10, the continuous system of maintenance session as claimed in claim 9, it is characterized in that, described information-storing device is aaa server or Mobile Access Gateway MAG, and described aaa server or Mobile Access Gateway MAG preserve described mobile node from the anchor point device address information of PMIPv6 territory before switch in the MIPv6 territory of second mobile domains as first mobile domains;
Correspondingly, when described mobile node specifically is used for switching to from the PMIPv6 territory as first mobile domains as the MIPv6 territory of second mobile domains, the described anchor point device address information of on the described aaa server in PMIPv6 territory or described Mobile Access Gateway MAG, preserving before the couple in router AR by the MIPv6 territory obtains to switch, utilize described anchor point device address information and anchor point device to set up the tunnel, and utilize described tunnel in the session of MIPv6 territory realization with described communication node.
11, the continuous system of maintenance session as claimed in claim 9, it is characterized in that, described information-storing device is a domain name server (DNS), and domain name server DNS preserves described mobile node from the anchor point device address information of PMIPv6 territory before switch in the MIPv6 territory of second mobile domains as first mobile domains;
Correspondingly, when described mobile node specifically is used for switching to from the PMIPv6 territory as first mobile domains as the MIPv6 territory of second mobile domains, obtain the preceding anchor point device address information of preserving of switching from domain name server DNS in the PMIPv6 territory, utilize described anchor point device address information and anchor point device to set up the tunnel, and utilize described tunnel in the session of MIPv6 territory realization with described communication node.
Keep the continuous system of session when 12, switching between territory as claimed in claim 9, it is characterized in that, described information-storing device is aaa server or domain name server (DNS), and described aaa server or domain name server (DNS) are preserved described mobile node from the anchor point device address information of MIPv6 territory before switch in the PMIPv6 territory of second mobile domains as first mobile domains;
Correspondingly, described mobile node specifically is used to utilize the tunnel between described Mobile Access Gateway MAG and the anchor point device to realize session with described communication node in the PMIPv6 territory, and described tunnel utilizes the described anchor point device address information of obtaining from described aaa server or domain name server DNS to set up between anchor point device by described Mobile Access Gateway MAG.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100974747A CN101594609B (en) | 2008-05-27 | 2008-05-27 | Method, system and node for maintaining continuous conversation during switching among different domains |
| PCT/CN2009/071116 WO2009143723A1 (en) | 2008-05-27 | 2009-03-31 | Method, system and node for keeping session continuity at the time of handover between different domains |
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| CN2008100974747A CN101594609B (en) | 2008-05-27 | 2008-05-27 | Method, system and node for maintaining continuous conversation during switching among different domains |
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| CN101594609B CN101594609B (en) | 2012-08-08 |
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| WO (1) | WO2009143723A1 (en) |
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| CN101778442A (en) * | 2010-01-04 | 2010-07-14 | 中兴通讯股份有限公司 | Session information storage method and access network equipment |
| CN102202286A (en) * | 2010-03-24 | 2011-09-28 | 华为技术有限公司 | Method for terminal access in heterogeneous network, and method and equipment for heterogeneous network switching |
| CN103260145A (en) * | 2013-04-18 | 2013-08-21 | 中国科学院计算技术研究所 | Mobile management method and system based on PMIPv6 intra-area service flow switching |
| WO2014169841A1 (en) * | 2013-08-09 | 2014-10-23 | 中兴通讯股份有限公司 | Method and system for realizing dual connectivity, base station and computer storage medium |
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| CN103067865B (en) * | 2011-10-19 | 2017-05-17 | 中兴通讯股份有限公司 | Method and system of creating optimized path in switching scene of multicast receiving end |
| US20130165121A1 (en) * | 2011-12-21 | 2013-06-27 | Qualcomm Incorporated | Reducing data optimized session negotiation time and facilitating active handoff |
| CN103259882B (en) * | 2013-05-23 | 2015-10-28 | 中国科学院计算机网络信息中心 | The dns server configuration of a kind of PMIPv6 and querying method |
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| KR100520141B1 (en) * | 2000-10-26 | 2005-10-10 | 삼성전자주식회사 | Hanover method of mobile terminal having mobile ip in mobile communication system |
| US7313628B2 (en) * | 2001-06-28 | 2007-12-25 | Nokia, Inc. | Protocol to determine optimal target access routers for seamless IP-level handover |
| CN100349432C (en) * | 2004-05-31 | 2007-11-14 | 中国科学院声学研究所 | Tunnel based mobile IPv6 quick switching method |
| US20060120171A1 (en) * | 2004-11-12 | 2006-06-08 | Samy Touati | Seamless handoff of mobile terminal |
| CN100512525C (en) * | 2004-11-29 | 2009-07-08 | 中兴通讯股份有限公司 | Fast switching method in MAP field of HMIPv6 |
| CN101001442B (en) * | 2006-01-10 | 2011-02-02 | 华为技术有限公司 | Overcell switching method and system in mobile network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101778442A (en) * | 2010-01-04 | 2010-07-14 | 中兴通讯股份有限公司 | Session information storage method and access network equipment |
| CN101778442B (en) * | 2010-01-04 | 2014-08-20 | 中兴通讯股份有限公司 | Session information storage method and access network equipment |
| CN102202286A (en) * | 2010-03-24 | 2011-09-28 | 华为技术有限公司 | Method for terminal access in heterogeneous network, and method and equipment for heterogeneous network switching |
| CN102202286B (en) * | 2010-03-24 | 2014-04-02 | 华为技术有限公司 | Method for terminal access in heterogeneous network, and method and equipment for heterogeneous network switching |
| CN103260145A (en) * | 2013-04-18 | 2013-08-21 | 中国科学院计算技术研究所 | Mobile management method and system based on PMIPv6 intra-area service flow switching |
| CN103260145B (en) * | 2013-04-18 | 2016-07-20 | 中国科学院计算技术研究所 | The management method of mobile switched based on Business Stream in PMIPv6 territory and system |
| WO2014169841A1 (en) * | 2013-08-09 | 2014-10-23 | 中兴通讯股份有限公司 | Method and system for realizing dual connectivity, base station and computer storage medium |
| CN107534905A (en) * | 2015-03-09 | 2018-01-02 | 诺基亚技术有限公司 | Method and apparatus for providing the instruction retained about the IP address after the transfer of WLAN is related to |
| US10555223B2 (en) | 2015-03-09 | 2020-02-04 | Nokia Technologies Oy | Method and apparatus for providing an indication regarding IP address preservation following a transfer involving a wireless local area network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101594609B (en) | 2012-08-08 |
| WO2009143723A1 (en) | 2009-12-03 |
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