CN101547408B - Context information transmitting method for mobile node, mobile communication system and device - Google Patents
Context information transmitting method for mobile node, mobile communication system and device Download PDFInfo
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- CN101547408B CN101547408B CN 200810066220 CN200810066220A CN101547408B CN 101547408 B CN101547408 B CN 101547408B CN 200810066220 CN200810066220 CN 200810066220 CN 200810066220 A CN200810066220 A CN 200810066220A CN 101547408 B CN101547408 B CN 101547408B
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- mobile node
- access device
- management equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- 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
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/087—Mobility data transfer for preserving data network PoA address despite hand-offs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
Abstract
The embodiment of the invention provides a context information transmitting method for a mobile node, a mobile node switching method, a mobile communication system and a local management device. The context information transmitting method for the mobile node comprises the following steps: receiving a context notification message sent by a prior access device, wherein the context notification message is carried with context information of the mobile node; acquiring an address of a new access device of the mobile node; and sending the context information of the mobile node to the new access device. The embodiment of the invention forwards the context information of the mobile node through the local management device, avoids the safety problem caused by direct sending of the context information of the mobile node between the prior access device and the new access device, and reduces the networking cost.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to context information transmitting method, mobile communication system and the local management equipment of a kind of mobile node changing method, mobile node.
Background technology
Proxy mobile IPv 6 agreement (proxy mobile IPv6, PMIPv6) be a kind of expansion to mobile IP v 6, different with mobile IP v 6 is: in PMIPv6, Mobile Access Gateway (mobile access gateway, MAG) or couple in router (access router, AR) simulation home link, to mobile node (mobile node, MN) announcement local prefix makes MN think that oneself is all the time at home link; MAG replaces MN to local mobile anchor (local mobility anchor, LMA) or home agent (home agent, HA) send logon message, Care-of Address in the logon message uses the interface IP address of MAG or AR, LMA/HA receives the agent binding update request of MAG/AR, and for MN sets up banding cache clauses and subclauses of establishment, information such as ID, the interface ID of preservation MN, prefix.And between MAG/AR and LMA/HA, set up a bidirectional tunnel for the message of transmission MN.Its packet sending and receiving process is as follows:
When peer node sends message to the home address of MN, this message can be intercepted and captured by the LMA/HA of MN, LMA/HA is according to local prefix inquiry list of bindings, and by the bidirectional tunnel between LMA/HA and the MAG/AR message is sent to MAG/AR and handle, according to the destination address of message, directly message is sent to MN after the message decapsulation of MAG/AR.
When MN transmitted messages literary composition to peer node, MAG/AR received this message, by the bidirectional tunnel between MAG/AR and the LMA/HA, this message was sent to LMA/HA, and LMA/HA peels off the outer IP heading of message, and the internal layer message is directly sent to peer node.
As mobile node MN the past Mobile Access Gateway (previous mobile access gateway, PMAG) or preceding couple in router (previous access router, PAR) move to new Mobile Access Gateway (new mobile access gateway, NMAG) or new couple in router (new access router, NAR) time, the service that it is enjoyed is inevitably interrupted or interference such as time-delay, enter the link of NMAG/NAR as MN after, all services that it is enjoyed before need rebuliding, this process can cause the service time delay of MN and increase packet loss.
Context transfer protocol (Context Transfer Protocol CXTP) designs in order to reduce time delay and packet loss in the MN handoff procedure.No matter MN before switching, switch during the back still switches, the information on services that preceding Mobile Access Gateway PMAG or preceding couple in router PAR directly enjoy MN is that contextual information Context is transferred to new mobile access network NMAG or new couple in router NAR, after NMAG/NAR received the contextual information of MN, alternative MN set up original service and connects.
As shown in Figure 1, be the flow chart of the mobile node changing method that provides in the prior art.Said method comprising the steps of:
S101, mobile node MN before needs switch, detect new access device after, access device PMAG sends hand off signaling forward, carries the address information of new access device NMAG in this hand off signaling.
S102, PMAG switch preparation after receiving the hand off signaling of MN transmission.Specifically, PMAG no longer is transmitted to MN after receiving and being the message of destination address with MN, but carries out this locality storage.
The address information of the new access device NMAG that carries in S103, the PMAG hand off signaling according to the MN transmission sends the context notification message to NMAG, carries the contextual information of MN.
After S104, NMAG receive this context notification message, send context acknowledgement message to PMAG, confirm to have received the contextual information of MN.
After S105, PMAG receive the context acknowledgement message that NMAG sends, be that the message of MN sends to NMAG with the destination address of buffer memory.
The destination address that S106, NMAG buffer memory receive is the message of MN.
S107, NMAG detect inserting local mobile node according to the contextual information that receives.
S108, be attached to local the time when NMAG finds the MN of PMAG notice, the destination address of buffer memory is sent to this MN for the message of this MN.
The inventor finds that in research process this scheme requires to set up the tunnel between PMAG and NMAG, and buffer memory is also transmitted packet and given MN, if do not set up secure tunnel between the MAG, then has potential safety hazard; If set up secure tunnel between MAG, because the uncertainty that MN moves all needs dynamic/static state to set up secure tunnel so between all MAG, this disposes/uses for real network, very big challenge beyond doubt.
Summary of the invention
The embodiment of the invention provides context information transmitting method, mobile communication system and the local management equipment of a kind of mobile node changing method, mobile node.By the contextual information of local management device forwards mobile node, avoided between preceding access device and new access device, directly sending the safety problem that the mobile node contextual information causes, reduced networking cost.
A kind of mobile node changing method that the embodiment of the invention provides comprises:
New access device receives the contextual information of the mobile node of local management equipment transmission;
Before described mobile node switches, set up interim tunnel with described local management equipment, still arrive described mobile node by the tunnel between preceding access device and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends;
Contextual information according to described mobile node, the mobile node that inserts described new access device is detected, when the described mobile node that detects described contextual information correspondence has been attached to described new access device, setting up formal tunnel with described local management equipment, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
The context information transmitting method of a kind of mobile node that the embodiment of the invention provides comprises:
The context notification message that access device sent before local management equipment received, described context notification message carry the address information of the new access device of the contextual information of mobile node and described mobile node;
The address that from described context notification message, obtains new access device;
The contextual information of described mobile node is sent to described new access device, so that described new access device detects being connected to local mobile node according to the contextual information of described mobile node;
Before described mobile node switches, set up interim tunnel with described new access device, still arrive described mobile node by the tunnel between access device before described and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends;
And when described new access device detects contextual information corresponding mobile node with described mobile node and is connected to this locality, setting up formal tunnel with described new access device, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
A kind of mobile communication system that the embodiment of the invention provides comprises:
Preceding access device, local management equipment and new access device, wherein,
Access device before described is used for sending to local management equipment the context notification message of mobile node, and described context notification message carries the address information of the new access device of the contextual information of mobile node and described mobile node;
Described local management equipment is used for receiving the described context notification message that described preceding access device sends; From described context notification message, obtain the address of new access device and the contextual information of described mobile node, the contextual information of the mobile node that obtains is sent to described new access device, so that described new access device detects being connected to local mobile node according to the contextual information of described mobile node; Also be used for setting up interim tunnel with described new access device, still arrive described mobile node by the tunnel between access device before described and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; And when described new access device detects contextual information corresponding mobile node with described mobile node and is connected to this locality, setting up formal tunnel with described new access device, is the packet of described mobile node with transmission from packet or destination that described mobile node sends;
Described new access device, the contextual information that is used for the described mobile node of the described local management equipment transmission of reception, and before switching, described mobile node sets up described interim tunnel with described local management equipment, still arrive described mobile node by the tunnel between preceding access device and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; Also be used for the contextual information according to described mobile node, the mobile node that inserts described new access device is detected, when the described mobile node that detects described contextual information correspondence has been attached to described new access device, setting up described formal tunnel with described local management equipment, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
A kind of local management equipment that the embodiment of the invention provides comprises:
Receiving element, the context notification message that access device sends before be used for receiving, described context notification message carry the address information of the new access device of the contextual information of mobile node and described mobile node;
Address acquisition unit is used for from the address that described context notification message obtains new access device;
Transmitting element is used for the contextual information of described mobile node is sent to described new access device, so that described new access device detects being connected to local mobile node according to the contextual information of described mobile node;
Described local management equipment, also be used for before described mobile node switches, set up interim tunnel with described new access device, still arrive described mobile node by the tunnel between access device before described and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; And when described new access device detects contextual information corresponding mobile node with described mobile node and is connected to this locality, setting up formal tunnel with described new access device, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
The embodiment of the invention is utilized the trusting relationship between local management equipment and the access device, and the contextual information of being incited somebody to action the mobile node of the past access device reception by local management equipment sends to new access device, has increased the fail safe of system.And the embodiment of the invention need not set up physical connection between preceding access device and new access device, saved networking cost.In addition, the embodiment of the invention can also be set up interim tunnel between new access device and local management equipment before mobile node switches, avoided losing of data message, has improved switch speed.
Description of drawings
Fig. 1 is the flow chart of the method that mobile node switches in the prior art;
Fig. 2 is the flow chart of a kind of mobile node changing method in the embodiment of the invention;
Fig. 3 is the structural representation of a kind of mobile communication system in the embodiment of the invention;
Fig. 4 A, Fig. 4 B are the structural representation of a kind of local management equipment in the embodiment of the invention.
Embodiment
The context transfer method of the disclosed mobile node changing method of the embodiment of the invention, mobile node, system and equipment, the preceding couple in router PAR of Mobile Access Gateway PMAG/ and the new new couple in router NAR of mobile access network NMAG/ belong to the situation of same local mobile anchor LMA/ home agent before being applicable to.
In the embodiment of the invention, when current access device finds that the local mobile node that adheres to need switch, by the bidirectional tunnel between self and the local management equipment contextual information of this mobile node is sent to local management equipment by the context notification message.After local management equipment is received this context notification message, according to the content of this context notification message or the address that obtains new access device according to network strategy, and this context notification message sent to this new access device.When new access device finds that this mobile node has been attached to this locality, initiate binding message, between own and local management equipment, set up binding relationship, be used for sending the up or downlink message of this mobile node.
The embodiment of the invention both can be used for common mobile node to be switched, and also can be applied in the quick switching of mobile node.When switching fast, though mobile node also is not attached under the new access device, but still between new access device and local management equipment, set up interim binding relationship, be used for transmitting the uplink message of mobile node, so both losing of message can be avoided, and switch speed can be improved again.
As shown in Figure 2, be the flow chart of the described a kind of mobile node changing method of the embodiment of the invention.This method may further comprise the steps:
S201, preceding access device PMAG are attached between local back and the LMA in mobile node MN and set up bidirectional tunnel, namely set up formal binding relationship.
S202, preceding access device PMAG detect being attached to local mobile node.
Described detection comprises that PMAG finds that automatically mobile node MN will switch or receive the notification message that will switch that MN sends.
When S203, preceding access device PMAG detect MN and need leave this locality and switch to other access devices, send the context notification message to local management equipment LMA, this context notification message carries the contextual information of the mobile node MN that will switch.This contextual information comprises: multicast information, generic route encapsulation (generic routing encapsulation, GRE) information, the ID of MN, the ID of the interface of MN, the home address of MN, one or more in the information such as switching sequence number.
When current access device PMAG can be known the address of new access device NMAG, this contextual information can also comprise the address information of new access device NMAG.The address of NMAG can be that PMAG can well-determined address, perhaps the one or more candidates' that determine according to certain strategy NMAG address.
After S204, local management equipment LMA receive the context notification message of PMAG transmission, send context acknowledgement message to PMAG.
After S205, local management equipment LMA receive the context notification message of PMAG transmission, obtaining the contextual information of MN from this context notification message stores, and from this context notification message, resolve the access device NMAG address (if preceding access device PMAG can be known the address of new access device NMAG) that makes new advances, perhaps calculate the NMAG address according to certain network strategy.
The NMAG address that LMA parses or calculates can be a definite address, can also be one or more candidates' NMAG address.
Then, LMA sends the contextual information of mobile node to described one or more the NMAG definite or candidate.
S206, the NMAG that receives described mobile node contextual information send context acknowledgement message to LMA.
When the NMAG of the contextual information of receiving mobile node was a plurality of candidates' NMAG, described a plurality of candidates' NMAG all sent context acknowledgement message to LMA.
S207, LMA set up interim tunnel after receiving the context acknowledgement message of NMAG transmission between NMAG and LMA, i.e. interim binding relationship.
After LMA receives the context acknowledgement message that a plurality of candidates' NMAG sends, then between this LMA and each candidate's NMAG, set up interim tunnel.
Each interim tunnel can be provided with existence the time limit (Transient Lifetime, TL).
After interim tunnel was set up, the packet that mails to MN also arrived MN by the tunnel between PMAG and the LMA, and still, the packet that sends from MN then sends by the tunnel between PMAG and LMA and NMAG and the LMA simultaneously.When a plurality of candidates' NMAG, the packet that sends from MN then simultaneously the tunnel between these a plurality of NMAG and LAM send to LMA.
S208, the NMAG that receives the mobile node contextual information detect being connected to local mobile node according to the contextual information of this mobile node moral.
If when having a plurality of candidates' NMAG, these a plurality of NMAG can detect being connected to local mobile node according to the contextual information of the mobile node that oneself receives.Specifically, NMAG judges by detecting two layers of link information whether certain mobile node is connected to this locality, and the contextual information that will be connected to local mobile node and the mobile node that receives then mates.
S209, detect when being connected to this locality with this contextual information corresponding mobile node as NMAG, and set up formal tunnel between the LMA, be i.e. formal binding relationship.After formal tunnel is set up, the packet that sends from MN, perhaps destination address is that the packet of MN all pass through this formal tunnel and transmits.
When having a plurality of candidates' NMAG, if mobile node MN has been attached under some NMAG, then other candidates' NMAG and the tunnel between the LMA are interim tunnel always, up to
The existence time limit TL in this interim tunnel expire (being TL=0); Or
The NMAG that MN adheres to sets up formal tunnel (being that the NMAG that MN adheres to sets up formal binding relationship with LMA) with LMA life cycle in its interim tunnel before being limited to the phase; Or
After LMA received that binding that PMAG sends is cancelled, this interim tunnel was deleted.
The bidirectional tunnel of setting up based on this mobile node between S210, deletion PMAG and the LMA.
Above-mentioned access device can be Mobile Access Gateway PMAG or couple in router PAR, and above-mentioned local management equipment can be local mobile anchor LMA, also can be the home agent HA of MN.
As shown in Figure 3, be the structural representation of the described a kind of mobile communication system of the embodiment of the invention.
When mobile node 304 was attached on the preceding access device 302, the upstream data bag of mobile node or downlink data packet all will send through the tunnel between preceding access device 302 and the local management equipment 301.
Preceding access device 302 will be paid close attention to the state of mobile node 304, when mobile node 304 forward access device 302 send the message that oneself will switch, when perhaps preceding access device 302 finds that mobile node 304 will switch, before access device 302 send the context notification messages to local management equipment 301, the contextual information of mobile node 304 is sent to local management equipment 301.Local management equipment 301 obtains mobile node 304 from this context notification message the contextual information row cache of going forward side by side.In addition, the address that can also carry new access device 303 in the context notification message that preceding access device 302 sends.
When carrying the address of new access device in the context notification message, local management equipment 301 obtains the address of new access device 303 from the context notification message; When not carrying the address of new access device in the context notification message, the contextual information that local management equipment 301 utilizes the mobile node that carries in the context notification message obtains or calculates the address of access device 303 of making new advances according to certain network strategy.
After interim tunnel is set up, all are that the packet of mobile node 304 still sends to mobile node 304 through the tunnel between preceding access device 302 and the local management equipment 301 with the destination address, but, the packet that sends from mobile node 304 then sends to local management equipment 301 by the tunnel between 301 between the tunnel between preceding access device 302 and the local management equipment 301 and new access device 303 and the local management equipment simultaneously, is transmitted according to destination address by local management equipment 301 again.
After interim tunnel is set up successfully, 303 pairs of new access devices insert local mobile node and detect, after finding that this contextual information corresponding mobile node has been attached to this locality, then set up formal tunnel between new access device 303 and the local management equipment 301.
If carry a plurality of candidates' new access device address in this context notification message, perhaps local management equipment 301 calculates a plurality of candidates' new access device address, then local management equipment 301 sends the contextual information of mobile node to each candidate's new access device, all receive the contextual information that local management equipment sends the candidate new access device all and set up interim tunnel between the local management equipment 301, after interim tunnel is set up, all are that the packet of mobile node 304 still sends to mobile node 304 through the tunnel between preceding access device 302 and the local management equipment 301 with the destination address, but, the packet that sends from mobile node 304 then simultaneously between the new access device by the tunnel between preceding access device 302 and the local management equipment 301 and all candidates and the local management equipment tunnel between 301 send to local management equipment 301, transmitted according to destination address by local management equipment 301 again.All candidates' new access device detects inserting local mobile node, if after certain candidate's new access device discovery had been attached to this locality with this contextual information corresponding mobile node, then 301 of this candidate's new access device and local management equipment were set up formal tunnel.After formal tunnel is set up and is finished, the tunnel that the contextual information based on this mobile node 304 between local management equipment 301 deletions oneself and the preceding access device 302 is set up.And other interim tunnel is oneself existence time limit TL expire (being TL=0); Or after the formal tunnel between mobile node 304 and the new access device 303 sets up, or local management equipment 301 receive before access device 302 binding of sending to cancel the back deleted.
Above-mentioned local management equipment can be local mobile anchor LMA, also can be the home agent HA of mobile node, and above-mentioned access device can be Mobile Access Gateway MAG or couple in router AR.
As Fig. 4 A, shown in Fig. 4 B, the structural representation for the described a kind of local management equipment of the embodiment of the invention comprises:
Receiving element 41 is used for receiving the context notification message, and this context notification message carries the contextual information of mobile node;
Resolution unit 42 is for the contextual information that obtains mobile node from described context notification message;
Memory cell 43 is used for the contextual information of the mobile node that the described resolution unit 42 of storage obtains from the context notification message;
Address acquisition unit 44 is used for the address that obtains new access device;
Described address acquisition unit 44 can be the address resolution unit 441 among Fig. 4 A, is used for when described context notification message carries the address of new access device the address that obtains new access device from described context notification message;
Described address acquisition unit 44 also can be the address calculation 442 among Fig. 4 B, is used for the address that obtains the new access device of described mobile node according to network strategy;
Transmitting element 45 is used for the contextual information of described mobile node is sent to described new access device.
The embodiment of the invention is utilized the trusting relationship between local management equipment and the access device, and the contextual information of being incited somebody to action the mobile node of the past access device reception by local management equipment sends to new access device, has increased the fail safe of system.And the embodiment of the invention need not set up physical connection between preceding access device and new access device, saved networking cost.In addition, the embodiment of the invention can also be set up interim tunnel between new access device and local management equipment before mobile node switches, avoided losing of data message, has improved switch speed.
The above only is preferred implementation of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, any modification of making, be equal to and replace and improve, all should be encompassed within protection scope of the present invention.
Claims (9)
1. the context information transmitting method of a mobile node is characterized in that, comprising:
The context notification message that access device sent before local management equipment received, described context notification message carry the address information of the new access device of the contextual information of mobile node and described mobile node;
The address that from described context notification message, obtains new access device;
The contextual information of described mobile node is sent to described new access device, so that described new access device detects being connected to local mobile node according to the contextual information of described mobile node;
Before described mobile node switches, set up interim tunnel with described new access device, still arrive described mobile node by the tunnel between access device before described and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; And when described new access device detects contextual information corresponding mobile node with described mobile node and is connected to this locality, setting up formal tunnel with described new access device, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
2. a mobile node changing method is characterized in that, comprising:
New access device receives the contextual information of the mobile node of local management equipment transmission;
Before described mobile node switches, set up interim tunnel with described local management equipment, still arrive described mobile node by the tunnel between preceding access device and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends;
Contextual information according to described mobile node, the mobile node that inserts described new access device is detected, when the described mobile node that detects described contextual information correspondence has been attached to described new access device, setting up formal tunnel with described local management equipment, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
3. method according to claim 2, it is characterized in that described contextual information comprises: one or more in the address of the home address of the ID of multicast information, generic route encapsulation GRE information, mobile node, the interface ID of mobile node, mobile node, new access device and the switching sequence number.
4. according to claim 2 or 3 described methods, it is characterized in that local mobile anchor or home agent that described local management equipment is mobile node;
Described new access device is Mobile Access Gateway or couple in router.
5. a mobile communication system is characterized in that, comprises preceding access device, local management equipment and new access device, wherein,
Access device before described is used for sending to local management equipment the context notification message of mobile node, and described context notification message carries the address information of the new access device of the contextual information of mobile node and described mobile node;
Described local management equipment is used for receiving the described context notification message that described preceding access device sends; From described context notification message, obtain the address of new access device and the contextual information of described mobile node, the contextual information of described mobile node is sent to described new access device, so that described new access device detects being connected to local mobile node according to the contextual information of described mobile node; Also be used for setting up interim tunnel with described new access device, still arrive described mobile node by the tunnel between access device before described and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; And when described new access device detects contextual information corresponding mobile node with described mobile node and is connected to this locality, setting up formal tunnel with described new access device, is the packet of described mobile node with transmission from packet or destination that described mobile node sends;
Described new access device, the contextual information that is used for the described mobile node of the described local management equipment transmission of reception, and before switching, described mobile node sets up described interim tunnel with described local management equipment, still arrive described mobile node by the tunnel between preceding access device and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; Also be used for the contextual information according to described mobile node, the mobile node that inserts described new access device is detected, when the described mobile node that detects described contextual information correspondence has been attached to described new access device, setting up described formal tunnel with described local management equipment, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
6. system according to claim 5, it is characterized in that, access device is before sending the context notification message of mobile node to local management equipment before described, also be used for detecting being attached to local mobile node, when detecting the notice that will switch that described mobile node need switch or receive that described mobile node sends, generate the context notification message of described mobile node.
7. according to claim 5 or 6 described systems, it is characterized in that local mobile anchor or home agent that described local management equipment is mobile node;
Access device and new access device are Mobile Access Gateway or couple in router before described.
8. a local management equipment is characterized in that, comprising:
Receiving element be used for to receive the context notification message, and described context notification message carries the address information of the new access device of the contextual information of mobile node and described mobile node;
Address acquisition unit is used for from the address that described context notification message obtains new access device;
Transmitting element is used for the contextual information of described mobile node is sent to described new access device, so that described new access device detects being connected to local mobile node according to the contextual information of described mobile node;
Described local management equipment, also be used for before described mobile node switches, set up interim tunnel with described new access device, still arrive described mobile node by the tunnel between access device before described and the described local management equipment so that mail to the packet of described mobile node, and send by the interim tunnel between the tunnel between access device before described and the described local management equipment and described new access device and the described local management equipment simultaneously from the packet that described mobile node sends; And when described new access device detects contextual information corresponding mobile node with described mobile node and is connected to this locality, setting up formal tunnel with described new access device, is the packet of described mobile node with transmission from packet or destination that described mobile node sends.
9. local management equipment according to claim 8 is characterized in that, also comprises:
Resolution unit is for the contextual information that obtains mobile node from described context notification message;
Memory cell is used for the contextual information of the mobile node that the described resolution unit of storage obtains from described context notification message.
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|---|---|---|---|
| CN 200810066220 CN101547408B (en) | 2008-03-28 | 2008-03-28 | Context information transmitting method for mobile node, mobile communication system and device |
| PCT/CN2009/070870 WO2009117927A1 (en) | 2008-03-28 | 2009-03-18 | Method for transmitting context information of mobile node, mobile system and device |
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| CN 200810066220 CN101547408B (en) | 2008-03-28 | 2008-03-28 | Context information transmitting method for mobile node, mobile communication system and device |
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|---|---|---|---|---|
| CN102244895B (en) * | 2010-05-13 | 2015-12-16 | 中兴通讯股份有限公司 | The ambulant shunt method of a kind of enhancing and device |
| WO2017214850A1 (en) * | 2016-06-14 | 2017-12-21 | 华为技术有限公司 | User context acquisition and lookup method, and related device |
| CN111510964B (en) * | 2019-01-31 | 2021-09-07 | 华为技术有限公司 | Communication method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101036174A (en) * | 2004-08-04 | 2007-09-12 | 高通弗拉里奥恩技术公司 | Enhanced techniques for using core based nodes for state transfer |
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| US7606201B2 (en) * | 2005-04-25 | 2009-10-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Handover enabler |
| FR2888078B1 (en) * | 2005-06-30 | 2007-08-10 | Alcatel Sa | METHOD FOR TRANSFERRING A COMMUNICATION INVOLVING A MOBILE NODE IN A MACRO-MOBILITY SITUATION WITHIN A HIERARCHICAL ROUTING IP COMMUNICATION NETWORK |
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| CN101036174A (en) * | 2004-08-04 | 2007-09-12 | 高通弗拉里奥恩技术公司 | Enhanced techniques for using core based nodes for state transfer |
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| WO2009117927A1 (en) | 2009-10-01 |
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