CN101360027B

CN101360027B - Method, apparatus and system for acquiring registering result and router migration

Info

Publication number: CN101360027B
Application number: CN2007101886077A
Authority: CN
Inventors: 梁文亮; 吴建军; 相治咸
Original assignee: Huawei Technologies Co Ltd
Priority date: 2007-07-30
Filing date: 2007-11-16
Publication date: 2012-06-27
Anticipated expiration: 2027-11-16
Also published as: CN101360027A

Abstract

The invention discloses methods, apparatus and systems for knowing registration results and router transfer. The invention discloses an ASN registration result obtaining method: using a pre-acquired cryptographic key to confirm registration results. The invention discloses an ASN registration result obtaining apparatus: including a key functional unit. The invention discloses an ASN registration result obtaining method: notifying that ASN registration is successful after the successful registration. The invention discloses an ASN registration result obtaining apparatus: including a registration unit and a notification unit. The invention discloses an ASN registration result obtaining apparatus: including a classifier detecting unit. The invention discloses an ASN registration result obtaining system: including a mobile node and an ASN. The invention discloses an AR transfer method: notifying that ASN registration is successful after registering successfully. The invention also discloses an AR transfer apparatus: including a registration unit and a notification unit. The invention also discloses an AR transfer apparatus: including a classifier detecting unit. The invention also discloses an AR transfer system: including a mobile node and an ASN.

Description

Know registering result, and method, the Apparatus and system of router migration

Technical field

The present invention relates to communication technical field, relate in particular to method, Apparatus and system that a kind of access service network is known registering result, reached router migration.

Background technology

In cordless communication network, generally include three entities: mobile node (MN, Mobile Node), home agent (HA, Home Agent) and interdependent node (CN, Correspondent Node).

Mobile node can be registered to HA through Binding Update (BU, Binding Update) process after adding network; This moment, mobile node can generate home address (HoA, Home Address) and Care-of Address (CoA, Care-of Address); Wherein CoA can be that (ID Identification) with the network prefix combination results that inserts routing broadcast, also can be according to DHCP (DHCP by the interface identifier of mobile node; Dynamic Host Configuration Protocol) distribute acquisition, HA can handle this request after receiving the register requirement of mobile node; Extract HoA and CoA, be recorded in the mapping table of a HoA and CoA, after this; HA can be forwarded to the mobile node packet that is truncated to the CoA of mobile node, thinks that mobile node provides service.

In access service network (ASN, Access Service Network), generally for mobile node the access route service is provided by couple in router (AR, Access Router); Couple in router can be positioned at access service network gateway (ASN GW usually; Access Service Network GateWay) on, can be an independent entity but also have, in ASN except ASN GW and couple in router; Also include base station (BS; Base Station), mobile node will be connected to the couple in router that service is provided for it through BS usually, and BS also can integrate with ASN GW sometimes.

Because mobile node can constantly change the position at its place usually; Mobile node is in the process that changes the position, and may leave is its service range that couple in router of access service is provided originally, perhaps when carrying out the optimization of Internet resources; The user is assigned to new couple in router; Just need carry out the migration of couple in router this moment, and mobile node is moved to another couple in router by a couple in router, continues as mobile node by new couple in router service is provided.

In present micro-wave access to global intercommunication (WiMAX, World Interoperability for Microwave Access) system, when mobile node need move couple in router, the signaling process of migration was as shown in Figure 1:

Mobile node need be moved to the target couple in router by primary access router among the figure.

Step 101, mobile node use old access service network data path to be connected with primary access router through BS.

Step 102, access service network (ASN; Access Service Network) inner functional entity sends to the target couple in router with the data path function request of redeploying (Anchor DPF Relocate Request), triggers the couple in router transition process.

The inner functional entity of ASN in this step can be realized by any entity among the ASN, for example: BS, ASN GW or couple in router.

Step 103, target couple in router send routing broadcast (Router Advertisement) to mobile node.

After step 104, mobile node are received routing broadcast, construct the CoA that makes new advances according to the interface identifier ID of mobile node and the network prefix of routing broadcast.

Step 105, mobile node are initiated mobile Internet Protocol (MIP, Mobile IP) registration process, send BU message to HA, and registration again also is the MIP registration process on HA, carries new CoA in this BU message.

After step 106, HA receive the BU message that mobile node sends; Upgrade the mapping table of HoA and CoA, carry out the MIP registration, return binding acknowledgement (BA then; Binding Acknowledgement) message is given mobile node, carries MIP in this BA message and whether registers information of successful.

The object information of BA is intercepted and captured and analyzed to step 107, target couple in router.

Because the BA message that HA sends need be passed through the target couple in router and passed to mobile node, so the target couple in router can be intercepted and captured the BA message that HA sends, and analyzes it, to obtain registering result.

Step 108, know when succeeding in registration through analyzing BA message that the target couple in router sends data path function and redeploys and replys (Anchor DPF Relocate Rsp) message to the inner functional entity of ASN at the target couple in router.

Step 109, the inner functional entity of ASN return and redeploy result (Relocate_Cnf) to the target couple in router.

Step 110, between BS and target couple in router, set up new access service network data path, mobile node is accepted the service of target couple in router through this passage.

Old access service network internal data way between step 111, dismounting BS and the primary access router.

Flow process finishes.

In research and practice process to prior art, the inventor finds that there is following problem at least in prior art:

Each entity among the ASN; For example BS, ASN GW and couple in router want to know whether successfully mobile node is registered to HA, must tackle the BA message between HA and the mobile node behind the migration router; And BA message carried out some special processings; Extract the registering result message that comprises in the BA message, could learn whether registration is successful through analysis, so that carry out follow-up flow process according to registering result.Because in the prior art; Can carry out verification to the message between them through the key (Key) that they have between regulation HA and the mobile node, to confirm the fail safe of message, BA message also is the message that belongs between HA and the mobile node; Couple in router is after intercepting and capturing BA message; Though can analyze the registering result that carries in this BA message, have no idea to verify whether this result was distorted, whether correct; If error of transmission in the process of transmission, occurs, perhaps distorted by people's malice, couple in router can not analyze correct result.

Summary of the invention

The technical problem that one embodiment of the invention will solve provides the method that a kind of access service network is known registering result, can make access service network know correct registering result.

For solving the problems of the technologies described above, access service network provided by the present invention knows that the method embodiment of registering result realizes through following technical scheme:

Said method comprises:

When carrying out the couple in router migration, the target access service network obtains key, intercepts and captures binding acknowledgement message, and said binding acknowledgement message is analyzed, and obtains registering result, and uses said key that said registering result is confirmed;

Wherein said target access service network obtains key and comprises:

When carrying out the couple in router migration; The local test post that obtains through target couple in router interception, deliver test post and obtain said key; The local test post that wherein obtains, deliver test post and obtain said key and comprise: obtain the mark and the said mark that carries in the test post of delivering that carry in the test post of said local respectively through target couple in router interception; Mark and the said mark that carries in the test post of delivering to carrying in the test post of said local calculate, and obtain said key.

The technical problem that another embodiment of the present invention will solve provides the device that a kind of access service network is known registering result, can make access service network know correct registering result.

For solving the problems of the technologies described above, access service network provided by the present invention knows that the device embodiment of registering result realizes through following technical scheme:

Said device comprises:

Handle the binding acknowledgement message elements, be used to intercept and capture binding acknowledgement message, said binding acknowledgement message is analyzed, obtain registering result;

The key function unit is used to obtain key, and uses said key that the registering result that said processing binding acknowledgement message elements obtains is confirmed that the wherein said key that obtains comprises:

Technique scheme provided by the invention, make ASN have key after, just can to the interception BA message judge; Judge whether BA was distorted, to confirm that to analyzing the MIP registering result that obtains the entity among the assurance ASN is when carrying out the couple in router migration; Can be owing to the error of transmission that in the process of transmission, occurs, or distorted by people's malice; And obtain wrong result, and make access service network know correct registering result, improved the fail safe of system.

Description of drawings

Fig. 1 is prior art signaling process figure;

The access service network that Fig. 2 provides for the embodiment of the invention is known device embodiment one structure chart of registering result;

The method embodiment signaling process figure that the couple in router that Fig. 3 provides for the embodiment of the invention moves;

Device embodiment one structure chart that the couple in router that Fig. 4 provides for the embodiment of the invention moves;

The system embodiment structure chart that the couple in router that Fig. 5 provides for the embodiment of the invention moves;

Method embodiment three signaling diagrams that a kind of couple in router that Fig. 6 provides for the embodiment of the invention moves;

Method embodiment four signaling diagrams that a kind of couple in router that Fig. 7 provides for the embodiment of the invention moves.

Embodiment

The embodiment of the invention provides a kind of access service network to know registering result, and method, the Apparatus and system of router migration, is used to make ASN can know correct registering result.

The access service network that the embodiment of the invention provides knows that the method embodiment one of registering result is as mentioned below:

Mobile node is when initial network entry; Just key between mobile node and the HA and context are sent among the ASN; Key and context can be at extendible authentication protocol (extensible authentication protocol; EAP) issue in the process, also can use other message to issue.

Entity among the ASN that mentions in the present embodiment generally includes couple in router; Can also be BS or ASN GW; This is to the entity among the ASN that analyzes of BA message of interception; Can serve as by the entity among above-mentioned any one ASN, need to prove that the function of couple in router is many times all accomplished by ASN GW.

When carrying out the couple in router migration; Key between this mobile node and the HA and context follow transition process to move to the entity among the target ASN; So that target ASN obtains this key, the mode of its migration can be that the entity among the former ASN initiatively sends to the entity among the target ASN; In the embodiment of the invention; For example send to the entity among the target ASN through Anchor_DPF_Relocate_Request message, also can be by the entity that is used to analyze BA message among the target ASN, in the time of in carrying out the couple in router transition process, maybe need analyzing BA message; The entity that initiatively tool has a key in former ASN goes for asks key, and the entity that has a key by tool among the former ASN again sends to the entity that is used to analyze BA message among the target ASN.

Entity interception among the target ASN is BA message down; And when BA message analyzed; Just can use this key whether BA was distorted this moment and judge,, confirm that BA message is safe to confirm to analyzing the MIP registering result that obtains; And when MIP succeeded in registration, the notice couple in router was proceeded follow-up step.

Entity among the target ASN is after BA message under the interception; Can it not analyzed yet, and it is carried in the message through packing or other modes, send to the entity that other have key; By other entities it is analyzed, and analysis result is informed to ASN with key.

Simultaneously because the key between mobile node and the HA has a valid expiration date; Key is to after date; Authenticator (Anchor Authenticator) can generate new mobile node and the key between the HA; Key on the ASN also will upgrade thereupon at this moment, and method for updating can be that authenticator sends new key to the entity among the ASN; Perhaps the entity among the ASN expires and sends request to authenticator when losing efficacy in the key life cycle, requires authenticator that new key is sent to him; The perhaps based on context variation of middle Security Parameter Index (SPI, security parameter index) of the entity among the ASN is sent request to authenticator when key loses efficacy, require authenticator that new key is sent to him.

After ASN has obtained the key between mobile node and the HA; Just can utilize said key and judge whether BA was distorted, to confirm analyzing the MIP registering result that obtains to the BA message of interception; Entity among the assurance ASN is when carrying out the couple in router migration; Can be owing to the error of transmission that in the process of transmission, occurs, or distorted by people's malice, and obtain wrong result, the fail safe that has improved system.

When there was routing optimality in network, the data that mobile node is routed optimization directly were routed to outside interdependent node, do not deliver through HA; The route optimization process of this moment also is a process to said interdependent node registration, and is similar basically with the MIP registration process, and its difference is that the object of mobile node registration has become other interdependent nodes from HA; BA message also sends to mobile node by said interdependent node; Contain the routing optimality results messages in this BA message, and still need pass through the couple in router transmission, so in this case; As long as the entity among the ASN has the key between mobile node and the interdependent node; Just can use present embodiment safety to obtain the result of routing optimality, also be the registering result of mobile node on interdependent node, improves the fail safe of system.

Mobile node is when carrying out routing optimality, and its interdependent node can pass through HA and return local test (HOT, a Home-of Time) message; Without HA, directly return one and deliver test (COT, Care-of Test) message; Carry corresponding mark (Token) in these two message; Mobile node just can obtain the key between mobile node and the interdependent node through the calculating to mark, and these two message also will be passed through couple in router transmission, these two message under the couple in router interception in the present embodiment; Just can calculate the key between mobile node and the interdependent node; The BA message that just can send the external node of intercepting is judged whether BA was distorted, to confirm analyzing the routing optimality result who obtains; Its concrete operation method is similar basically with the description of preceding text when registry object is HA, no longer repeats at this.

When mobile node removed register flow path accordingly, whether handling process basically identical, ASN can be judged BA message through key equally judge whether BA was distorted, go registering result correct with what the affirmation analysis obtained.

The access service network that the embodiment of the invention provides knows that the device embodiment one of registering result is as shown in Figure 2, comprising: handle binding acknowledgement message elements 201, key function unit 202, key maintenance unit 203, key migration unit 204.

Wherein, handle binding acknowledgement message elements 201, be used to intercept and capture BA message, and the BA message of intercepting and capturing is analyzed, to obtain registering result.

In embodiment provided by the invention, said registration process can be the MIP registration process, also can be the process of registering to interdependent node in the routing optimality.

Key function unit 202 is used to obtain key, and uses this key that the registering result of handling 201 acquisitions of binding acknowledgement message elements is confirmed.

Key in the present embodiment can be the key between mobile node and the HA, also can be the key between mobile node and the interdependent node.

Further present embodiment can also comprise, key migration unit 204 is used for when carrying out the couple in router migration, this key migration being arrived the target couple in router.

Key maintenance unit 205 was used for when key lost efficacy, and obtained new key from authenticator.

Registration in the present embodiment can be that MIP registration, MIP go registration, also can be to the interdependent node registration, remove registering result to interdependent node; Registering result can be that MIP registering result, MIP remove registering result, also can be the registering result that removes registering result to the registering result of interdependent node registration, to interdependent node.

The device embodiment one that this access service network that the embodiment of the invention provides is known registering result is realized by the entity among the ASN in actual use usually, and is wherein common with couple in router again.The concrete occupation mode of this device and above-described access service network know that the method embodiment one of registering result is basic identical, no longer are repeated in this description at this.

This access service network that more than provides for the embodiment of the invention is known the method embodiment one of registering result, and this access service network that reaching the embodiment of the invention provides is known the description of the device embodiment one of registering result

The access service network that the embodiment of the invention provides knows that the method embodiment two of registering result is as mentioned below:

When carrying out router migration, mobile node can carry out the MIP registration to HA, when having routing optimality; Can register to interdependent node, after succeeding in registration, mobile node can be received the BA message that HA or interdependent node return; Can know through BA message mobile node whether registration is successful; When succeeding in registration, directly send the notification to ASN by mobile node, notice ASN should succeed in registration.

Simultaneously, when carrying out router migration, all can relate to the renewal of grader usually.In the WiMAX network; When the functional module of setting up DPF among the ASN is received the downlink data packet that needs issue, need classify the passage of transmitting with the specified data bag to it according to the information of the IP source address of packet, destination address and so on; Confirm its this walk the passage between the ASN; Still walk the passage between BS and the ASN GW, perhaps other possible passages, grader are exactly the functional entity of realizing classification feature.

Grader is carrying out a destination address that major criterion is exactly a packet of branch time-like; And the destination address of downlink data packet generally all is the CoA of mobile node at this moment; When carrying out the couple in router migration, mobile node can generate new CoA according to the network prefix of target couple in router broadcasting, perhaps obtains new CoA at access network through dhcp process; So after producing new CoA, also will upgrade grader.

Functional entity in the ASN all might have grader, and in the process of carrying out the couple in router migration, the grader on all functions entity all need upgrade.

Here the renewal of grader can be triggered by mobile node, also can be triggered by ASN.

Can also comprise licensing process in this grader renewal process to the service flow authorized entity, in the embodiment of the invention, can be like BS through RESV to service flow authorized entity request mandate.This service flow authorized entity can be positioned at target ASN, also can be positioned at former ASN, also can be positioned at connectivity serving network (CSN, Connectivity Service Network), if be positioned at CSN, then by ASN further to connectivity serving network request mandate.Only after obtaining mandate, just trigger the grader renewal process.

Registration mentioned above all can also have to be the registration of mobile node on interdependent node for MIP registers, and hereinafter will be registered the renewal of routine interpretive classification device with MIP as.

As if the renewal that is triggered grader by mobile node, mobile node can trigger the renewal process of entity grader among the ASN through this notification message when notification message is succeeded in registration in transmission.In the embodiment of the invention; Mobile node notice ASN succeeds in registration; And the message of carrying out the grader renewal can be dynamic Service change request (DSC-REQ; Dynamic service change-Request) message is directly carried the indication information of notice MIP registering result and is informed that this MIP of ASN succeeds in registration in DSC-REQ.

At this moment; Produce through default mode if the CoA address is the interface ID according to network prefix that inserts routing broadcast and mobile node, or obtain through dhcp process, ASN just can obtain the CoA address at this terminal; In these cases; Entity among the ASN is received after the DSC-REQ, can ownly obtain the CoA address according to the default structure or to the request of DHCP related functional entities, upgrades destination address part corresponding in the information of classifier with the CoA that obtains then; If the CoA address is to be produced through other modes by the network prefix that inserts routing broadcast and the interface ID of mobile node; For example mobile node produces at random; Perhaps distributed by the far-end Dynamic Host Configuration Protocol server and this far-end Dynamic Host Configuration Protocol server does not have interface with ASN, ASN does not just know new CoA, will carry the CoA information of neotectonics at this moment among this DSC-REQ; So that ASN after receiving message, can trigger and carry out the renewal process of grader.

If trigger the renewal of grader by ASN; Then mobile node directly sends message informing ASN and succeeds in registration, ASN know succeed in registration after, trigger the renewal of grader again; When ASN does not know new CoA, can comprise the CoA information of neotectonics in the message that mobile node sends.

Access service network for the situation embodiment of the invention of going to register provides knows that the method embodiment two of registering result is suitable equally, just goes registration process need not carry out the renewal of grader.

The access service network that the embodiment of the invention provides knows that the method embodiment three of registering result is as mentioned below:

The registration that present embodiment is mentioned all can also have to be the registration of mobile node on interdependent node for MIP registers, and hereinafter will be registered the method embodiment three that access service network that example describes the embodiment of the invention and provide is known registering result as with MIP.

When carrying out router migration, mobile node can carry out the MIP registration to HA, when having routing optimality; Can register to interdependent node, after succeeding in registration, mobile node can be received the BA message that HA or interdependent node return; Can know that through BA message mobile node whether registration is successful, when succeeding in registration, triggered the renewal process of grader among the ASN by mobile node; Whether ASN is updated through grader being detected the acquisition grader; Be updated if detect grader, explained that then this MIP has succeeded in registration, ASN can carry out follow-up action according to registering result.

In the embodiment of the invention, the message that mobile node notice ASN carries out the grader renewal can be DSC-REQ message.Comprise in the DSC-REQ message: new information of classifier also is new CoA address, perhaps new network prefix.Entity among the ASN is received this message later on directly according to new CoA address of carrying in this message or new network prefix replacement information of classifier, and can through with former destination address know that relatively the terminal has obtained new CoA address and the MIP registration process completes successfully.

The access service network that the embodiment of the invention provides knows that the method embodiment four of registering result is as mentioned below:

The registration that present embodiment is mentioned all can also have to be the registration of mobile node on interdependent node for MIP registers, and hereinafter will be registered the method embodiment four that access service network that example describes the embodiment of the invention and provide is known registering result as with MIP.

When carrying out router migration, the target access service network can send router broadcast message to mobile node, in this message, carries network prefix; Mobile node can carry out the MIP registration to HA; When having routing optimality, can register to interdependent node, after succeeding in registration; Mobile node can be received the BA message that HA or interdependent node return, and can know through BA message mobile node whether registration is successful.

In the embodiment of the invention; After the target access service network has sent router broadcast message; Begin to detect the IP message through said target access service network, in the embodiment of the invention, described detection can be only to detect binding update messages BA through the IP message of said target access service network; Also can be to detect business datum IP message, can also be not only to detect binding update messages BA but also detect business datum IP message.When detect certain through the prefix of the destination address of the downstream IP message of said target access service network or certain through the network prefix of distributing in the prefix of the source address of the up IP message of said target access service network and the above-mentioned router broadcast message when consistent; Said access service network can judge that mobile node carries out MIP and succeeded in registration, and access service network can carry out follow-up action according to registering result.In the embodiment of the invention; Can also be to detect certain old network prefix of distributing through the prefix and the primary access router of the source address of the up IP message of said target access service network through the prefix of the destination address of the downstream IP message of said target access service network or certain when inconsistent when said access service network; Said access service network can judge that mobile node carries out MIP and succeeded in registration, and access service network can carry out follow-up action according to registering result.Preferably, in the embodiment of the invention, the IP message that said access service network detects through said access service network can be to detect binding update messages BA or detect the up IP message from mobile node.

If for a long time the IP message through said access service network is detected, may cause the rapid rising of offered load, preferred; In the embodiment of the invention; Timer can also further be set, after access service network has sent router broadcast message, start described timer; Before described timer expiry, detect IP message through said access service network.If before described timer expiry, detect the IP message of above-mentioned coupling, just stop said timer, carry out subsequent step; If when described timer expiry, do not detect the IP message of above-mentioned coupling, just stop to detect.In the embodiment of the invention, when at timer expiry, still do not detect the IP message of above-mentioned coupling, preferably, can increase the step of an inquiry, this registering result of inquiry mobile node is specifically asked for an interview following detailed.

Further; In the embodiment of the invention; When detect bind reply BA message, maybe when the network prefix of distributing in the source address prefix of the destination address prefix that detects certain downstream IP message or certain up IP message and the above-mentioned router broadcast message is consistent; Or detect certain through the source address prefix of the destination address prefix of the downstream IP message of this access service network or up IP message and old network prefix that primary access router distributes when inconsistent when said access service network; Or when timer expiry, still not detecting the IP message of above-mentioned coupling as stated, then said access service network can also further send query messages to mobile node, to whether success of mobile node inquiry MIP registration; Mobile node can send MIP registering result information and give access service network after receiving described query messages; After having obtained this information, access service network is known this registering result, can carry out follow-up action according to registering result.

In the embodiment of the invention; Said access service network is after sending query messages to mobile node; If the MIP registering result information that mobile node returns shows this MIP registration failure, then access service network keeps mobile node with the link circuit resource between the former access service network; If the MIP registering result information that mobile node returns shows that this MIP succeeds in registration, then access service network deletion mobile node is with the link circuit resource between the former access service network; Further, in the embodiment of the invention, can also be that mobile node is after receiving described query messages; If this MIP has succeeded in registration; Then to described access service network feedback MIP registering result information, said access service network if do not receive the MIP registering result information that mobile node is sent, then was not defaulted as MIP and succeeds in registration in the predefined time mobile node; Access service network is known this registering result, can carry out follow-up action according to registering result; Further; Can also be said access service network in the predefined time if do not receive the MIP registering result information that mobile node is sent; Then continue to send said query messages to mobile node, send the MIP registering result information of all not receiving mobile node behind the query messages preestablish number of times like this, then said access service network judges that MIP succeeds in registration; Access service network is known this registering result, can carry out follow-up action according to registering result.

In the embodiment of the invention; Above-mentioned query steps is as a preferred optional step; The prefix of consistent or its source address of the network prefix of in said access service network detects the prefix of finding its source address from the up IP message of mobile node and router broadcast message, distributing and the old network prefix of primary access router distribution are inconsistent; Described query steps can be implemented, also described query steps can be implemented; If said access service network detects be the downstream IP message that the sends to mobile node prefix of finding its destination address with router broadcast message in the network prefix prefix consistent or its destination address of distributing inconsistent with the old network prefix of primary access router distribution, then advise the described query steps of enforcement.

In the embodiment of the invention, the interacting message between said access service network and the mobile node comprises that above-mentioned access service network issues query messages and mobile node feedback MIP registering result information, can be following three kinds of modes:

Access service network gateway in mode 1, the access service network and mobile node directly carry out interacting message, and the base station only is used to transmit message.Be that the base station did not deal with, and directly is transmitted to mobile node after access service network gateway was issued the base station to query messages, the base station does not deal with after receiving the registering result information from mobile node yet, directly is given to access service network gateway.

Access service network gateway in mode 2, the access service network sends the access service network signaling and gives the base station, and the base station converts said network signal to idle message and sends to mobile node.

Query messages is directly sent to mobile node in base station in mode 3, the access service network, and the base station receives the registering result information from mobile node.

In the embodiment of the invention, the idle message between base station and the mobile node can be a DSC message.Can comprise in the DSC-REQ message that send the base station: MIP registering result request indication; Perhaps the new CoA address in the grader or be new network prefix as a hint, hint request MIP registering result.Comprise in the DSC-RSP message that mobile node sends: the MIP registering result, perhaps the result of DSC is as hint, and DSC moves and successfully then representes mobile node agreement renewal CoA, and promptly MIP succeeds in registration, and does not need to remain into the resource of former access service network again; Otherwise the DSC action is unsuccessful, representes that then the MIP registration is unsuccessful, need remain into the resource of former access service network.The grader of mobile node side can upgrade when receiving the MIP register response, also can when receiving the DSC request, upgrade.

The access service network that provides in the embodiment of the invention is known the method embodiment two of registering result; In three, four, concrete MIP registering result can be defined as the coded format (TLV of a type-length-value; Type-Length-Value), this TLV is as shown in table 1:

Table 1, MIP registering result TLV

Title	Type (type)	Length (length)	Value (value)
				The MIP registering result	0x01	1bit	?0?or?1

The coding of type column can distribute according to the definition situation of link layer message under it in the table 1, and length can be that 1 bit (bit) also can be 1 byte (byte), and from the consideration of saving resource, length is short more good more; Value can be two kinds of situation, success or failure, just example given here.

Concrete information of classifier also can be defined as a TLV, and this TLV is as shown in table 2:

Table 2, information of classifier TLV

Title	Type (type)	Length (length)	Value (value)
				Information of classifier	0x02	Variable-length	A tabulation

Value hurdle in the table 2 has write down a tabulation, and each element is corresponding to the classifier parameters of a service flow in the table: source address, destination address, source port, destination interface etc.

Mobile node possibly carry out multiple business simultaneously sometimes, uses a plurality of interfaces, and for example a mobile node is also being downloaded when conversing; He has just used two interfaces so, and this time, this mobile node will have two CoA, and one is session services; One is download service; This moment, mobile node should be constructed two new CoA, and corresponding session services and download service respectively is so that two kinds of business can be moved to the target couple in router smoothly.So when mobile node had a plurality of CoA, mobile node should be constructed the new CoA of respective number, and set up the mapping table of service flow and CoA, the corresponding relation of record service flow and CoA, this corresponding relation also can be reflected in the Value hurdle in the table 2.

Concrete CoA address information also can be defined as a TLV, and this TLV is as shown in table 3:

Table 3, CoA address TLV

Title	Type (type)	Length (length)	Value (value)
				The CoA address	0x03	128bits	The CoA address of mobile node

In addition; The message that can notify MIP registering result and triggering grader to upgrade has a variety of, and for example, top DSC-REQ message also can be used distance measurement request (RNG-REQ; Ranging-request) message; Perhaps other link layer message of special definition substitute and realize that no matter use which kind of message, the definition of TLV can be carried out according to top description in addition.

Here the entity among the ASN can be realized by BS, couple in router or ASN GW.

Because the functional entity in the ASN all might have classifier function, the grader on all functions entity all need upgrade at this moment, if there is not grader on the couple in router, couple in router just need not carry out the renewal of grader.

When BS was in different physical entities respectively with ASN-GW, the link layer message that mobile node sends at first can send to BS, if realized classifier function on the BS, the grader that BS carries out itself earlier upgrades, and sent the R6 signaling by BS then and gave ASN-GW.Can to be BS in this process according to grader more newly arrive judges the MIP registering result; Perhaps directly obtain the MIP registering result indication information in the message; TLV in the R6 signaling also can use above-mentioned TLV form; Just type coding need be considered uniqueness in the scope of R6 signaling, can not use used coding; If the last grader of having realized of ASN-GW; In can directly being included in the information of carrying in the link layer message of mobile node transmission on the R6 signaling; And analyze grader and judge whether the MIP registration successful by ASN-GW; Perhaps directly obtain MIP registering result indication information, judge whether to need to upgrade grader; If BS has analyzed the result of MIP registration, can directly on the R6 signaling, carry relevant indication information.

When BS was in different physical entities respectively with ASN GW, above process can also comprise, and: BS receives after the DSC-REQ message, converts RESV to and sends to the service flow authorized entity.If the mandate of service flow authorized entity is passed through, the renewal process of service flow authorized entity and then triggering grader.On the physical entity, grader upgrades and can be realized alternately by the inside between service flow authorized entity and the grader realization entity so if this service flow authorized entity and grader realization entity coexist; Otherwise the service flow authorized entity sends a grader updating message and realizes entity to grader.This grader realizes that entity can be above-mentioned BS or grappling ASN GW.Then; Can realize other steps of entity triggers couple in router migration by service flow authorized entity or grader; The for example deletion of old access service network internal data way between BS and the primary access router, deletion of relevant information etc. on the former grappling ASN GW.

In addition; Can notify the MIP registering result and trigger still dhcp message of message that grader upgrades, DHCP notice request (Information-Request) message for example, neighbor discovery messages (NS; Neighbor solicitation); Router is found message (RS, Router solicitation), perhaps special in addition other IP layer message that define.

Different being of using these message and above-mentioned link layer mode to notify: when BS was in different physical entities respectively with ASN-GW, that at first know relevant information was ASN-GW, and grader just need send to BS to information of classifier when BS realizes; And ASN-GW just can be according to other operations that the analysis of information of classifier triggered the couple in router migration.

Equally, grappling ASN-GW at first obtains this MIP registering result information as the exit point of data.Can carry out the subsequent process of the renewal and the couple in router migration of grader this moment simultaneously.Carry out just can carrying out after at first also need obtaining the authorization in the process of grader renewal from the service flow authorized entity.But, if think that this step can be omitted so because the CoA/ that couple in router migration causes delivers prefix (Care-of Prefix) upgrades and do not need the mandate of service flow authorized entity.

Concrete Care-of Prefix information also can be defined as a TLV, and this TLV is as shown in table 4:

Table 4, Care-of Prefix TLV

Title	Type (type)	Length (length)	Value (value)
				The Care-of prefix	0x04	Variable	The Care-of prefix of mobile node

The definition of all above-mentioned TLV all is exemplary, and the present invention does not limit other suitable definition mode.

Whether success must be tackled BA message to ASN for the MIP of knowing mobile node registers in the prior art; Obtain the MIP registering result through analyzing BA message then, if error of transmission in the process of transmission, occurs, or distorted by people's malice, the entity among the ASN can not analyze correct result; Among this embodiment provided by the invention; Mobile node is finished in MIP registration, and the registering result that carries in the BA message of receiving is successfully the time, informs that directly or indirectly this MIP of ASN succeeds in registration.Because BA message is the private message of mobile node; Mobile node has key can test to BA message, and one confirms whether the BA message of receiving is safe, and mobile node is only under the situation of confirming the BA message safety; Can confirm that just the MIP registering result that from BA message, obtains is safe; So when mobile node confirmed that MIP succeeds in registration, what send to ASN informed that the message that MIP succeeds in registration also is safe, the fail safe of system is greatly improved.

When there is routing optimality in network; The data that mobile node is routed optimization directly are routed to outside interdependent node; Do not deliver through HA, the route optimization process of this moment also is a process to the interdependent node registration, and is similar basically with the MIP registration process; Only the object of mobile node registration has become other interdependent nodes from HA; BA message also sends to mobile node by external node, contain routing optimality registering result message in this BA message, and mobile node still has the key between mobile node and the external node; Can confirm the fail safe of BA message, under both of these case, can be suitable for so the access service network that the embodiment of the invention provides is known the method embodiment two, three and four of registering result.

The access service network that the embodiment of the invention provides knows that the device embodiment two of registering result comprises: registering unit and notification unit;

Registering unit is used to register;

Notification unit is used for after registering unit succeeds in registration, and this succeeds in registration to inform access service network.

The registration that present embodiment is mentioned all can also have to be the registration of mobile node on interdependent node for MIP registers.

This access service network knows that the device embodiment two of registering result is when reality is used; Usually be presented as mobile node; Its concrete working method can be known the method embodiment two of registering result or three or four description with reference to the access service network that the preceding text embodiment of the invention provides, and no longer is repeated in this description at this.

The access service network that the embodiment of the invention provides knows that the device embodiment three of registering result comprises: grader and grader detecting unit.

Whether the grader detecting unit is used to detect grader and is updated, if grader is updated and then shows and succeed in registration.

This access service network knows that the device embodiment three of registering result is when reality is used; Usually be presented as the entity among the ASN; Its concrete working method can be known the method embodiment two of registering result or three or four description with reference to the access service network that the preceding text embodiment of the invention provides, and no longer is repeated in this description at this.

The access service network that the embodiment of the invention provides knows that the device embodiment four of registering result comprises:

Transmitting element is used for sending router broadcast message to mobile node;

Detecting unit is used to detect the IP message through access service network, knows registering result according to testing result.

Said transmitting element is after mobile node sends router broadcast message, and detecting unit begins to detect the IP message through access service network.In the embodiment of the invention; Said detection can be only to detect binding update messages BA through the IP message of said access service network; Also can be the business datum IP message that detects other, can also be the business datum IP message that had not only detected binding update messages BA but also detected other.When said detection to certain through the prefix of the destination address of the downstream IP message of said access service network or certain through the network prefix of distributing in the prefix of the source address of the up IP message of said access service network and the said router broadcast message when consistent, said access service network judgement mobile node carries out MIP and has succeeded in registration.In the embodiment of the invention; Can also be that said access service network judges that mobile node carries out MIP and succeeded in registration when said detection is inconsistent to certain old network prefix of distributing through the prefix and the primary access router of the source address of the up IP message of said access service network through the prefix of the destination address of the downstream IP message of said access service network or certain.

In the embodiment of the invention, said device further can comprise timer, and before said timer expiry, said detection is through the IP message of access service network.

Further, in the embodiment of the invention, said device can also comprise query unit, is used for to mobile node inquiry and registration result.Here; When detect certain through the prefix of the destination address of the downstream IP message of said access service network or certain through the network prefix of distributing in the prefix of the source address of the up IP message of said access service network and the above-mentioned router broadcast message when consistent; Or; When detecting certain old network prefix of distributing through the prefix and the primary access router of the source address of the up IP message of said access service network through the prefix of the destination address of the downstream IP message of said access service network or certain when inconsistent; Or when timer expiry, still do not detect the IP message of coupling as stated; Then said query unit is sent query messages to mobile node, is used for to mobile node inquiry and registration result;

Said device can also comprise receiving element, is used to receive the registering result information from mobile node.

The access service network that the embodiment of the invention provides knows that the system embodiment of registering result comprises: mobile node and access service network.

Wherein, mobile node comprises notification unit, is used for after succeeding in registration, and this succeeds in registration to inform access service network.

This access service network is known the concrete working method of the system embodiment of registering result, can know the method embodiment two of registering result or three or four description with reference to the access service network that the preceding text embodiment of the invention provides, and no longer is repeated in this description at this.

The method embodiment of a kind of couple in router migration that the embodiment of the invention provides is as mentioned below:

After succeeding in registration, carry out grader and upgrade, this succeeds in registration to inform access service network, sets up new access service network data path, and mobile node is moved to the target couple in router.

Because when carrying out router migration; Mobile node can be registered to HA usually; When having routing optimality, also need to the interdependent node registration, the registration that present embodiment is mentioned all can be registered for MIP; Also have to be the registration of mobile node on interdependent node, existing register the method embodiment one that example is described a kind of couple in router migration that the embodiment of the invention provides as with MIP:

When mobile node need be moved to the target couple in router by primary access router, the method embodiment signaling process of the couple in router migration that the embodiment of the invention provides was as shown in Figure 3:

Step 301, mobile node use old access service network data path to be connected with primary access router through BS.

Step 302, the inner functional entity of ASN send to the target couple in router with Anchor_DPF_Relocate_Request message, trigger the couple in router transition process.

The inner functional entity of ASN in this step can be arranged on any entity of ASN, for example: BS, ASN GW, couple in router.

Step 303, target couple in router send routing broadcast message Router Advertisement to mobile node.

After step 304, mobile node are received Router Advertisement message, construct the CoA that makes new advances according to the interface identifier ID of mobile node and the network prefix of routing broadcast; Perhaps distribute new CoA through DHCP.

Mobile node possibly carry out multiple business simultaneously sometimes, uses a plurality of interfaces, and for example a mobile node is also being downloaded when conversing; He has just used two interfaces so, and this time, this mobile node will have two CoA, and one is session services; One is download service; This moment, mobile node should be constructed two new CoA, and corresponding session services and download service respectively is so that two kinds of business can be moved to the target couple in router smoothly.

So when mobile node had a plurality of CoA, mobile node should be constructed the new CoA of respective number, and set up the mapping table of service flow and CoA, the corresponding relation of record service flow and CoA.

Step 305, mobile node are initiated the MIP registration process, send binding update messages BU to HA, and registration again also is the MIP registration process on HA, carries new CoA in this BU message.

When there was routing optimality in network, the data that mobile node is routed optimization were routed directly to interdependent node, and this moment, mobile node just need send BU message to corresponding interdependent node, initiated the MIP registration process.

After step 306, HA receive the BU message that mobile node sends, upgrade the mapping table of HoA and CoA, carry out the MIP registration, return binding acknowledgement message BA then, carry MIP in this BA message and whether register information of successful to mobile node.

If mobile node has sent BU message to corresponding interdependent node, this moment, interdependent node also should return BA message to mobile node.

Key check between step 307, mobile node use and the HA is also analyzed this BA message, obtains MIP registering result information, when succeeding in registration, sends the notification to ASN, informs that this MIP of ASN succeeds in registration, and carries out the renewal of grader.

When carrying out routing optimality, the object information of key check between mobile node use and the interdependent node and analysis BA message obtains the registering result information on interdependent node, when succeeding in registration, carries out grader and upgrades.

The process of grader renewal here can be triggered by mobile node, also can be triggered by the entity among the ASN.

Can also further comprise the licensing process to the service flow authorized entity in this grader renewal process, BS can be through RESV to service flow authorized entity request mandate.This service flow authorized entity can be positioned at target ASN, also can be positioned at former ASN, also can be positioned at CSN, if be positioned at CSN, then by ASN further to connectivity serving network request mandate.Only after obtaining mandate, just trigger the grader renewal process.

As if the renewal that is triggered grader by mobile node, mobile node can trigger the renewal process of entity grader among the ASN when notification message is succeeded in registration in transmission through this notification message.Mobile node notice ASN succeeds in registration, and to carry out the message that grader upgrades can be DSC-REQ, and Dynamic service change-Request directly carries the indication information of notice MIP registering result and informs that this MIP of ASN succeeds in registration in DSC-REQ.

At this moment; Produce through default mode if the CoA address is the interface ID according to network prefix that inserts routing broadcast and mobile node, or obtain through dhcp process, ASN just can obtain the CoA address at this terminal; In these cases; Entity among the ASN is received after the DSC-REQ, can ownly obtain the CoA address according to the default structure or to the request of DHCP related functional entities, upgrades destination address part corresponding in the information of classifier with the CoA that obtains then; If the CoA address is to be produced through other modes by the network prefix that inserts routing broadcast and the interface ID of mobile node; ASN does not just know new CoA; Will carry the CoA information of neotectonics this moment among this DSC-REQ; So that ASN after receiving message, can trigger and carry out the renewal process of grader.

In the present embodiment, concrete MIP registering result can be defined as a type-length-value coded format (TLV, Type-Length-Value), this TLV is as shown in table 1:

Table 1, MIP registering result TLV

Table 2, information of classifier TLV

Table 3, CoA address TLV

The definition of above-mentioned TLV only is exemplary, and the present invention does not limit other suitable definition mode.

In addition; The message that can notify MIP registering result and triggering grader to upgrade has a variety of; Top DSC-REQ message also can be used RNG-REQ message; Perhaps other link layer message of special definition substitute and realize that no matter use which kind of link layer message, the definition of TLV can be carried out according to top description in addition.

In addition; The message that can notify MIP registering result and triggering grader to upgrade can also be DHCP notice request (DHCP-Information-Request) message; Neighbor discovery messages (NS), router is found message (RS), perhaps special in addition other IP layer message that define.The present invention does not limit notice MIP registering result and triggers the concrete way of realization of the message of grader renewal.

Equally, grappling ASN-GW at first obtains this MIP registering result information as the exit point of data.Can carry out the subsequent process of the renewal and the couple in router migration of grader this moment simultaneously.Carry out just can carrying out after at first also need obtaining the authorization in the process of grader renewal from the service flow authorized entity.But, if think that this step can be omitted so because the CoA/Care-of Prefix renewal that the couple in router migration causes does not need the mandate of service flow authorized entity.

Table 4, Care-of Prefix TLV

If when step 304; Mobile node has been set up the mapping table of service flow and CoA; Should carry out the renewal of information of classifier this moment according to this form, and this renewal process can be disposable, promptly through affected grader on all entities of primary information interactive refreshing; Also can be repeatedly, upgrade a grader on the entity at every turn, send an indication information when upgrading the last time, the presentation class device upgrades and finishes.

Under situation about being necessary, the repeatability that this moment, couple in router can also carry out the CoA address detects, look at newly-generated CoA whether the someone use, if having, then notify mobile node to generate new CoA once more.

Simultaneously; If MIP registration process that mobile node parses from the BA message of returning or routing optimality binding procedure result are for unsuccessful, in the present embodiment, will send BU message once more by mobile node carries out retry; If success behind the retry; Flow process after then carrying out successfully, if unsuccessful behind the retry, under retry above certain number of times still would be unsuccessful situation; Explain that the MIP registration process in this router migration possibly can't carry out for a certain reason, this moment, processing mode was described below:

When registry object is HA, have three kinds of processing modes optional:

Mode one, trigger exiting network process by mobile node, mobile node exits network.

Mode two, notice ASN retry do not become, and trigger exiting network process by ASN, and mobile node exits network.

Mode three, mobile node use original C oA and original couple in router to communicate, and in the scope of capabilities, continue to provide service by original couple in router.

When registry object is interdependent node, the process that mobile node is initiated deletion or revised to these service flow of registering unsuccessful interdependent node.

Step 308, know when succeeding in registration, send Anchor_DPF_Relocate_Rsp message to the inner functional entity of ASN at the target couple in router.

Step 309, the inner functional entity of ASN return Relocate_Cnf message and give the target couple in router.

Step 310, between BS and target couple in router, set up new access service network data path, mobile node is accepted the service of target couple in router through this passage.

Old access service network internal data way between step 311, dismounting BS and the primary access router.

Step 310 and step 311 can be carried out after upgrading the grader completion, also can carry out simultaneously with the renewal process of grader.

Flow process finishes.

Whether success must be tackled BA message to ASN for the MIP of knowing mobile node registers in the prior art; Obtain the MIP registering result through analyzing BA message then, if error of transmission in the process of transmission, occurs, or distorted by people's malice, the entity among the ASN can not analyze correct result; Among this embodiment provided by the invention; Mobile node is finished in MIP registration, and the registering result that carries in the BA message of receiving is successfully the time, informs that directly or indirectly this MIP of ASN succeeds in registration.Because BA message is the private message of mobile node; Whether mobile node has key can test to BA message, be safe with the BA message of confirming to receive, mobile node is only under the situation of confirming the BA message safety; Can confirm that just the MIP registering result that from BA message, obtains is safe; So when mobile node confirmed that MIP succeeds in registration, what send to ASN informed that the message that MIP succeeds in registration also is safe, the fail safe of system is greatly improved.

When there was routing optimality in network, the data that mobile node is routed optimization directly were routed to outside interdependent node, do not deliver through HA; The route optimization process of this moment also is a process to the interdependent node registration; Similar basically with the MIP registration process, only the object of mobile node registration has become other interdependent nodes from HA, and BA message also sends to mobile node by external node; Contain routing optimality registering result message in this BA message; And still mobile node has the key between mobile node and the external node, can confirm the fail safe of BA message, so this embodiment provided by the invention can be suitable under two kinds of situation.

Further, when mobile node had a plurality of CoA, the present invention had also provided corresponding solution, set up the mapping table of service flow and CoA, made mobile node when carrying out the couple in router migration, can conveniently realize the smooth migration of a plurality of service flow.

The method embodiment two of a kind of couple in router migration that the embodiment of the invention provides; The flow process of the method embodiment one of a kind of couple in router migration that provides with the embodiment of the invention is basic identical; Its difference is; The step 307 of the method embodiment one of a kind of couple in router migration that the embodiment of the invention provides in the method embodiment two of a kind of couple in router migration that the embodiment of the invention provides is:

Key check between mobile node use and the HA is also analyzed this BA message, obtains MIP registering result information, when succeeding in registration; Send the notification to ASN; Carry out the renewal of grader, ASN obtains the message whether grader is updated through grader is detected, and has been updated if detect grader; Explain that then this MIP has succeeded in registration, ASN can carry out follow-up action according to registering result.

Wherein, to carry out the message that grader upgrades can be DSC-REQ message to mobile node notice ASN.Comprise in the DSC-REQ message: new information of classifier also is new CoA address.Entity among the ASN is received this message later on directly according to the new CoA address replacement information of classifier that carries in this message, and can through with former destination address know that relatively the terminal has obtained new CoA address and the MIP registration process completes successfully.

Other steps of the method embodiment two of a kind of couple in router migration that the embodiment of the invention provides are similar basically with the method embodiment one of a kind of couple in router migration that the embodiment of the invention provides, and no longer repeat at this.

Method embodiment three signaling processes of a kind of couple in router migration that the embodiment of the invention provides are as shown in Figure 6:

Step 601, mobile node use old access service network data path to be connected with primary access router through BS.

Step 602, the inner functional entity of ASN send to the target couple in router with Anchor_DPF_Relocate_Request message, trigger the couple in router transition process.

Step 603, target couple in router send Router Advertisement message to mobile node.

After step 604, mobile node are received Router Advertisement message, construct the CoA that makes new advances according to the interface identifier ID of mobile node and the network prefix of routing broadcast; Perhaps distribute new CoA through DHCP.

Step 605, mobile node are initiated the MIP registration process, send BU message to HA, and registration again also is the MIP registration process on HA, carries new CoA in this BU message.

After step 606, HA receive the BU message that mobile node sends, upgrade the mapping table of HoA and CoA, carry out the MIP registration, return BA message then, carry MIP in this BA message and whether register information of successful to mobile node.

Key check between step 607, mobile node use and the HA is also analyzed this BA message, obtains MIP registering result information, when succeeding in registration, sends DSC-REQ message and gives BS, and newly CoA address or prefix are included in the DSC-REQ message.

Step 608, BS send data path/resource reservation request (Data-path/RR-REQ) to target ASN, authorize to the service flow authorized entity request grader renewal of target ASN.

Step 609, know at the target couple in router and to succeed in registration, and obtain grader and upgrade when authorizing, send Anchor_DPF_Relocate_Rsp message to the inner functional entity of ASN.

Step 610, the inner functional entity of ASN return Relocate_Cnf message and give the target couple in router.

Step 611, target ASN send data path/resource reservation and reply (Data-Path/RR-RSP) to BS.

Step 612, BS send the dynamic Service variation and reply (DSC-RSP) to mobile node. and in the scene that BS classifies, BS upgrades grader according to the indication of Data-Path/RR-RSP message. and BS is apprised of new anchor DPF sign.

Step 613, BS send data path/resource reservation and correctly respond (Data-Path/RR-ACK), as the response to Data-Path/RR-RSP.

Old access service network internal data way between step 614, dismounting BS and the primary access router.

Step 611 can be carried out after upgrading the grader completion to step 614, also can carry out simultaneously with the renewal process of grader.

Flow process finishes.

Method embodiment four signaling processes of a kind of couple in router migration that the embodiment of the invention provides are as shown in Figure 7:

Step 701, mobile node use old access service network data path to be connected with primary access router through BS.

Step 702, the inner functional entity of former ASN redeploy request with data path function, like Anchor_DPF_Relocate_Request message, send to the target couple in router in the target access service network, trigger the couple in router transition process.

The inner functional entity of former ASN in this step can be arranged on any entity of ASN, for example: BS, ASN GW, couple in router.

In the embodiment of the invention; Couple in router can be an independent physical entity in access service network; Also can be with access service network gateway in same physical entity; In the embodiment of the invention, be that example is elaborated with access service network gateway at same physical entity with couple in router.

Step 703, target couple in router send Router Advertisement message to mobile node.

Step 704, after routing broadcast message is sent, the target access service network begins to detect the IP message through said target access service network.

In the embodiment of the invention; Described detection can be only to detect binding update messages BA through the IP message of said target access service network; Also can be to detect business datum IP message, can also be not only to detect binding update messages BA but also detect business datum IP message.

After step 705, mobile node are received Router Advertisement message, construct the CoA that makes new advances according to the interface identifier ID of mobile node and the network prefix of routing broadcast; Perhaps distribute new CoA through the dhcp process request.

Step 706, mobile node are initiated the MIP registration process, send BU message to HA, and registration again also is the MIP registration process on HA, carries new CoA in this BU message.

After step 707, HA receive the BU message that mobile node sends, upgrade the mapping table of HoA and CoA, carry out the MIP registration, return BA message then, carry MIP in this BA message and whether register information of successful to mobile node.

In the embodiment of the invention, in step 704, after the target access service network had sent routing broadcast message, the target access service network just began to detect the IP message through said target access service network; This testing process can last till till the IP message that detects coupling.

Step 708, detect the IP message of coupling.

In the embodiment of the invention, can be that the target couple in router detects the IP message in the target access service network, also can be that the mark access service network gateway detects the IP message, also can be that the IP message is detected in the base station.

In the embodiment of the invention; When detect certain through the prefix of the destination address of the downstream IP message of said target access service network or certain through the network prefix of distributing in the prefix of the source address of the up IP message of said target access service network and the above-mentioned router broadcast message when consistent; Then detect the IP message of coupling; Said access service network can judge that mobile node carries out MIP and succeeded in registration, and access service network can carry out follow-up action according to registering result.

In the embodiment of the invention; Can also be to detect certain old network prefix of distributing through the prefix and the primary access router of the source address of the up IP message of said target access service network through the prefix of the destination address of the downstream IP message of said target access service network or certain when inconsistent when said access service network; Then detect the IP message of coupling; Said access service network can judge that mobile node carries out MIP and succeeded in registration, and access service network can carry out follow-up action according to registering result.Preferably, in the embodiment of the invention, the IP message that said access service network detects through said access service network can be to detect binding update messages BA or detect the up IP message from mobile node.

In the embodiment of the invention, judge that when said access service network mobile node carries out MIP and succeeds in registration, carry out the access service network internal data way that follow-up action comprises that mainly dismounting is old according to registering result.

Further, in the embodiment of the invention, if for a long time the IP message through said access service network is detected; May cause the rapid rising of offered load, preferred, in the embodiment of the invention; Timer can also further be set, after access service network has sent router broadcast message, start described timer; Before described timer expiry, detect IP message through said access service network.If before described timer expiry, detect the IP message of above-mentioned coupling, just stop said timer, carry out subsequent step; If when described timer expiry, do not detect the IP message of above-mentioned coupling, just stop to detect.In the embodiment of the invention, when at timer expiry, still do not detect the IP message of above-mentioned coupling, preferably, can increase the step of an inquiry, this registering result of inquiry mobile node is specifically asked for an interview following detailed.

Step 709, target access service network send query messages to mobile node.

In the embodiment of the invention; When detect bind reply BA message, maybe when the network prefix of distributing in the source address prefix of the destination address prefix that detects certain downstream IP message or certain up IP message and the above-mentioned router broadcast message is consistent; Or detect certain through the source address prefix of the destination address prefix of the downstream IP message of this access service network or up IP message and old network prefix that primary access router distributes when inconsistent when said access service network; Or as above when timer expiry, still do not detect the IP message of above-mentioned coupling described in the step 708; Whether then said access service network can also further send query messages to mobile node, successful to mobile node inquiry MIP registration.

In the embodiment of the invention; If target couple in router or mark access service network gateway detect the IP message in the target access service network; Then issue query messages by access service network gateway in this step; Give the base station like data path/resource reservation request message (Data-path/RR-REQ), this message conversion query messages that becomes to eat dishes without rice or wine is handed down to mobile node, see step 710 by the base station.

If the IP message is detected in the base station in the target access service network, then can directly issue the query messages of eating dishes without rice or wine in this step and give mobile node by the base station, see step 710.

Step 710, base station issue the query messages of eating dishes without rice or wine and give mobile node.

In the embodiment of the invention, the query messages of eating dishes without rice or wine between base station and the mobile node can be a DSC message.Can comprise in the DSC-REQ message that send the base station: registering result request indication; Perhaps the new CoA address in the grader or be new network prefix as a hint, hint request registration result.

Step 711, mobile node feedback registering result information.

Mobile node feeds back to the base station with the registering result information-bearing after receiving the query messages of eating dishes without rice or wine from the base station in the query response message of eating dishes without rice or wine.Here, the described query response message of eating dishes without rice or wine can be a DSC-RSP message.

Comprise in the DSC-RSP message that mobile node sends: registering result information, perhaps the result of DSC is as hint, and DSC moves and successfully then representes mobile node agreement renewal CoA, promptly succeeds in registration, and does not need to remain into the resource of former access service network again; Otherwise the DSC action is unsuccessful, and then the expression registration is unsuccessful, need remain into the resource of former access service network.

Step 712, base station are sent query response message and are given access service network gateway.

The base station is behind the query response message of receiving from mobile node of eating dishes without rice or wine; Its registering result information of carrying is fed back to access service network gateway through query response message, as feeding back to access service network gateway through data path/resource reservation response message (Data-Path/RR-RSP).

Step 713, after access service network gateway is received described data path/resource reservation response message; The target couple in router can succeed in registration according to its registering result information of carrying judgement, then sends Anchor_DPF_Relocate_Rsp message to the inner functional entity of ASN.

Further; In the embodiment of the invention; Can also be mobile node after receiving described query messages, if this has succeeded in registration, mobile node execution in step 713,714 described steps not then to access service network feedback registering result information; Said access service network in the predefined time if do not receive the registering result information that mobile node is sent; Then be defaulted as and succeed in registration, access service network is known this registering result, can carry out follow-up action according to registering result; Further, can also be said access service network in the predefined time if do not receive the registering result information that mobile node is sent, then continue to send said query messages to mobile node, transmission preestablishes looking into of number of times like this

All do not receive the registering result information of mobile node after the inquiry message, then said access service network judgement is succeeded in registration, and access service network is known this registering result, can carry out follow-up action according to registering result.

Step 714, the inner functional entity of ASN return Anchor DPF Relocate_Cnf message and give the target couple in router.

Step 715, the correct response message of access service network gateway feedback data path/resource reservation (Data-Path/RR-ACK) are as the response to Data-Path/RR-RSP.

Old access service network internal data way between step 716, dismounting BS and the primary access router.This step can be after ASN be known the MIP registering result any time trigger, this embodiment is as last step.

Flow process finishes.

In the embodiment of the invention; The target access service network just detects the IP message through said target access service network after issuing routing broadcast; Judge whether to succeed in registration; Further,, judgement can also come to guarantee that further the registering result that obtains is safe that the fail safe of system is greatly improved like this to mobile node when succeeding in registration through issuing query messages.

The device embodiment one of a kind of couple in router migration that the embodiment of the invention provides is as shown in Figure 4, comprising: registering unit 401, notification unit 402, grader updating block 403, memory cell 404.

Registering unit 401 is used to register.

Notification unit 402 is used for after registering unit 401 succeeds in registration, and informs that ASN should succeed in registration;

Grader updating block 403 is used for after registering unit 401 succeeds in registration, carrying out the renewal of grader.

Memory cell 404 is used for when a plurality of Care-of Address is arranged, and preserves the mapping table of service flow and Care-of Address, so that said grader updating block 403 carries out the renewal of grader according to this mapping table.

The device embodiment one of the couple in router migration that the embodiment of the invention provides is when reality is used; Usually realize by mobile node; The description of the method embodiment that its concrete working method can be moved with reference to the couple in router that preceding text provide the embodiment of the invention no longer is repeated in this description at this.

The device embodiment two of a kind of couple in router migration that the embodiment of the invention provides comprises: grader and grader detecting unit.

Whether the grader detecting unit is used to detect grader and is updated, and then shows the registration process success if grader is updated.

Set up path unit, be used for after said succeeding in registration, setting up new access service network data path, mobile node is moved to the target couple in router.

The device embodiment two of the couple in router migration that the embodiment of the invention provides is when reality is used; Usually realize by the entity among the ASN; The description of the method embodiment that its concrete working method can be moved with reference to the couple in router that preceding text provide the embodiment of the invention no longer is repeated in this description at this.

The system embodiment of a kind of couple in router migration that the embodiment of the invention provides is as shown in Figure 5, comprising: mobile node 510 and access service network 520.

Wherein mobile node 510 comprises: memory cell 511, grader updating block 512, registering unit 513, notification unit 514.

Access service network 520 comprises: grader 521, grader updating block 522, set up path unit 523.

Registering unit 513 is used to register.

Notification unit 514 is used for after registering unit 513 succeeds in registration, and this succeeds in registration to inform access service network 520;

Set up path unit 523, be the target couple in router, be used for after succeeding in registration, setting up new access service network data path, mobile node is moved to the target couple in router.

Grader updating block 512 is used for after succeeding in registration, and grader 521 is upgraded.

Grader updating block 522, be used for know succeed in registration after, grader 521 is upgraded.

Grader updating block 522 can be arranged on any entity of ASN.

Memory cell 511 is used for when a plurality of Care-of Address is arranged, and preserves the mapping table of service flow and Care-of Address, so that grader updating block 512, grader updating block 522 and carry out the renewal of grader 521 according to this mapping table.

The registration that present embodiment is mentioned all possibly also might be the registration of mobile node on interdependent node for MIP registers.

The concrete working method of the system embodiment of the couple in router migration that the embodiment of the invention provides, method embodiment one that can move with reference to the couple in router that preceding text provide the embodiment of the invention or two description no longer are repeated in this description at this.

One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.

More than to two kinds of access service network provided by the present invention know the method for registering result, three kinds of access service network know the device of registering result, a kind of access service network know the device of the method for the system of registering result, the migration of a kind of couple in router, two kinds of couple in router migrations, and the system of a kind of couple in router migration carried out detailed introduction; For one of ordinary skill in the art; Thought according to the embodiment of the invention; Part all can change on embodiment and range of application; In sum, this description should not be construed as limitation of the present invention.

Claims

1. an access service network is known the method for registering result, it is characterized in that said method comprises:

Wherein said target access service network obtains key and comprises:

2. access service network as claimed in claim 1 is known the method for registering result, it is characterized in that, said method further comprises:

When said key expired, said target access service network obtained new key from authenticator.

3. access service network as claimed in claim 1 is known the method for registering result, it is characterized in that, said registering result is: mobile internet protocol registration result or the mobile node registering result on interdependent node.

4. an access service network is known the device of registering result, it is characterized in that said device comprises:

5. access service network as claimed in claim 4 is known the device of registering result, it is characterized in that, said device also comprises:

The key migration unit is used for when carrying out the couple in router migration, said key being sent to the target couple in router.

6. know the device of registering result like claim 4 or 5 described access service network, it is characterized in that said device also comprises:

The key maintenance unit is used for when said key lost efficacy, obtaining new key from authenticator.