CN100401846C - Method of establishing data transmission bearing - Google Patents

Method of establishing data transmission bearing Download PDF

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Publication number
CN100401846C
CN100401846C CNB200510085100XA CN200510085100A CN100401846C CN 100401846 C CN100401846 C CN 100401846C CN B200510085100X A CNB200510085100X A CN B200510085100XA CN 200510085100 A CN200510085100 A CN 200510085100A CN 100401846 C CN100401846 C CN 100401846C
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address
mss
asn
carrying
dhcp
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CN1794871A (en
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肖正飞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The present invention discloses a realizing method for establishing data transmission bearers, which is applied for a global microwave access interoperability network connecting an access service network and a connecting service network through an access service network gateway. A mobile user station requires obtaining one or more than one Internet protocol address in the same time period to a network side, and the network side allocates the Internet protocol addresses of a corresponding quantity to the mobile user station according to a received request. An Internet protocol bearer corresponding to each internet protocol address successfully allocated is established, and the Internet protocol addresses corresponding to the established Internet protocol bearers are notified to the mobile user station. The present invention can ensure that the mobile user station can simultaneously apply for multiple Internet protocol addresses and establish multiple Internet protocol bearers, effectively improves the communication quality of the mobile user station, and can also obviously increase user satisfaction.

Description

A kind of implementation method of setting up bearer context for data transmission
Technical field
The present invention relates to the network communications technology, be specifically related to a kind of implementation method of setting up bearer context for data transmission.
Background technology
Along with development of Communication Technique, World Interoperability for Microwave Access, WiMax (World interoperabilityMicrowave Access Wimax) network more and more comes into one's own.Referring to Fig. 1, Fig. 1 is a prior art Wimax networking diagram.Wherein, access service network gateway (ASN-GW) 106 in the access service network (ASN) 111 links to each other with base station (BS) 101, BS 102 by the R6 interface, also link to each other with mobile IP (MIP) Client Agent 105, ASN-GW 107 respectively, also link to each other by the HA 110 among Dynamic Host Configuration Protocol server (DHCP Server) 108, home agent (HA) 109 and the CSN 113 in Interface R3 and the connectivity serving network (CSN) 112 by Interface R4.
ASN-GW 107 among the ASN 111 is except with ASN-GW 106 links to each other, also link to each other with BS 103, BS 104 by the R6 interface, also link to each other with MIP Client Agent 105, also link to each other by DHCP Server 108, HA 109 among Interface R3 and the CSN 112 and the HA 110 among the CSN 113 by Interface R4.Mobile subscriber station (MSS) 100 can be communicated by letter with BS by the R1 interface.
When MSS will communicate by letter with network side, at first to carry out Signalling exchange, to apply for the IP address and to set up corresponding bearer context for data transmission, the normally IP carrying of this bearer context for data transmission with ASN and CSN.The flow process that concrete IP application IP addresses and corresponding IP carrying is set up as shown in Figure 2, Fig. 2 may further comprise the steps:
Step 201:MSS finds (Discover) request by the BS that inserts to ASN-GW broadcasting DHCP, with the IP address of applying for self being used to communicate by letter.
Step 202:ASN-GW receives that from after the DHCP Discover of the MSS request this request is sent to DHCP Server, and said DHCP Server is generally a plurality of here.
Step 203: the DHCP Server that each receives described DHCP Discover request, choose an IP address respectively, and selected IP address is carried on DHCP provides in (Offer) message and send to ASN-GW from its own IP address pond.
Step 204:ASN-GW will send to MSS from the DHCP Offer message of DHCP Server.
After step 205 is received a plurality of DHCPOffer messages from a plurality of DHCP Server to step 206:MSS, therefrom choose an IP address as the IP address that will apply for, by ASN-GW broadcasting DHCP request (Request), carry MSS IP address of choosing and the DHCP Server sign that selected IP address is provided among this DHCP Request.
Step 207: when with DHCP Request in after the DHCP Server that matches of the DHCP Server sign that comprises receives DHCP Request, this DHCP Server sends the DHCP that comprises described IP address to ASN-GW and confirms (Ack).
After step 208:ASN-GW receives DHCP Ack from DHCP Server, read the IP address that comprises among this DHCP Ack, pairing attachment point (PoA) address is carried as the follow-up IP that will set up in this IP address, and to MIP Client Agent transmission PoA address notification, this notice comprises MSS sign, PoA address at least.
After step 209:MIP Client Agent is received PoA address notification from ASN-GW, send the response of PoA address notification to ASN-GW.
Step 210:MIP Client Agent reads MSS sign, the PoA address in the PoA address notification, and in external agent (FA) address of self storing, HA address, choose FA address and HA address, FA in the pairing ASN-GW in FA address that chooses sends MIP register requirement (Registration Request) afterwards, comprises described FA address, HA address, described PoA address and register requirement time that the MIP Client Agent is chosen in this request at least.Step 209 can be carried out simultaneously with step 210.
After FA among the step 211:ASN-GW receives the MIP register requirement, read the HA address that comprises in this request, and this request is sent to the pairing HA in this HA address.
After step 212 is received the MIP register requirement to step 213:HA, set up the IP transmission bearer between HA and the FA, and with the PoA address binding in the MIP register requirement to the IP transmission bearer of setting up, be responsible for transmission by this IP transmission bearer without exception to guarantee follow-up packet with this PoA address.Afterwards, HA sends the response of MIP register requirement by ASN-GW to the MIP Client Agent, and this response comprises the MSS sign.
After step 214:MIP Client Agent was received described MIP register requirement response, the described FA in ASN-GW sent the DHCP that carries the MSS sign and opens message.
Step 215 is determined that the MSS that comprises in this message identifies pairing IP carrying and can carry out normal transfer of data, and is sent DHCP Ack to MSS after receiving that to step 216:FA DHCP from the MIP Client Agent opens message.
After MSS receives described DHCP Ack, just can use the described IP address transceive data of application, the data of transmitting-receiving can be transmitted in the IP of this IP address binding carrying.
By the above as seen, using said method can only apply for an IP address for same MSS in a period of time and set up the pairing IP carrying in this IP address.Same MSS can apply for a plurality of IP address usually at short notice and set up the corresponding respectively IP carrying in a plurality of IP address, with a plurality of sessions of supporting that this MSS will set up but in actual applications.Do not support the related content that same MSS applies for a plurality of IP address and sets up a plurality of IP carryings in the short time in the present communication protocol, adding the MIP Client Agent is to send the DHCP that carries the MSS sign to ASN-GW simply to open message at last, carry even make MSS apply for a plurality of IP address and set up a plurality of IP, ASN-GW also has no way of finding out about it and the DHCP Ack at which IP address sent to MSS, causes normally transceive data of MSS.This has reduced the communication quality of MSS, has also reduced user satisfaction.
Have, in present communication protocol, no matter whether the IP carrying sets up success again, as long as MSS has successfully been distributed in the IP address that MSS applied for, FA can send DHCPAck to MSS at last.Therefore, though MSS has received from the DHCP Ack of FA and begun to transmit data sometimes, in fact the MSS IP carrying that is used to transmit data is not set up successfully, and this has reduced the communication quality of MSS equally, and has reduced user satisfaction.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of implementation method of setting up bearer context for data transmission, guarantees to can be at short notice same MSS and applies for a plurality of IP address and can set up corresponding IP carrying at a plurality of IP address of application.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of implementation method of setting up bearer context for data transmission, be applied to connect by access service network gateway ASN-GW the World Interoperability for Microwave Access, WiMax Wimax network of access service network ASN and connectivity serving network CSN, this method comprises:
Mobile subscriber station MSS obtains one or more Internet protocols IP address to the network side request in the section at one time, network side is that described MSS distributes the corresponding number of I P address according to the request of receiving, set up the pairing IP in each IP address that is allocated successfully carrying, and will set up successfully or the IP that fails carries pairing IP address notification MSS.
The Dynamic Host Configuration Protocol server DHCP Server of MSS in CSN sends request;
Then described network side will be set up successfully or the IP that fails carries pairing IP address notification MSS and is: CSN sets up result notification ASN-GW with the IP carrying; ASN-GW according to the IP that receives carrying set up that the result will set up successfully or the IP that fails carries pairing IP address notification MSS.
Described IP carrying is set up the result and is represented that IP carries the IP carrying of setting up successfully or failing and sets up result's sign, and the method that described CSN sets up result notification ASN-GW with the IP carrying is:
CSN sends by the mobile IP MIP Client Agent of ASN-GW in ASN and comprises MSS sign, IP address, IP carrying and set up the MIP register requirement of result's sign and respond;
The MIP Client Agent receives from after the response of the MIP register requirement of CSN, sends to ASN-GW and carries MSS sign, described IP address, described IP carrying and set up the DHCP that the result identifies and open message.
It is that expression IP carrying is set up successfully or the IP that fails carries and sets up the result and identify that the result is set up in described IP carrying, and the method that described ASN-GW will set up successfully or the IP that fails carries pairing IP address notification MSS is:
ASN-GW judges that whether result's sign is set up in the IP carrying of receiving is that successfully sign is set up in the IP carrying, if ASN-GW then transmits DHCP to MSS and confirms Ack, comprises the MSS sign and sets up successful IP and carry pairing IP address among this DHCP Ack; Otherwise ASN-GW transmits DHCP failure Nack to MSS, comprises the IP that sets up failure among this DHCP Nack and carries pairing IP address.
When setting up the pairing IP in each IP address that is allocated successfully carrying, at the IP carrying of setting up failure, this method further comprises:
ASN-GW by and the base station BS that inserts of MSS between signaling/message and the air interface management face message between this BS and the MSS, will set up failure and cause the corresponding IP address of IP carrying disabled information notice MSS owing to the IP carrying.
When setting up the pairing IP in each IP address that is allocated successfully carrying, at the IP carrying of setting up failure, this method further comprises:
The IP that ASN-GW will set up failure carries DHCPServer among the pairing IP address notification CSN; After DHCP Server receives described IP address, discharge this IP address.
When network side was MSS distributing IP address, at the IP address of distributing failure, this method further comprised:
Network side sends the DHCP Nack that comprises the IP address of distributing failure to ASN-GW; ASN-GW sends the IP address assignment failed message that comprises the IP address of distributing failure by the BS that MSS inserts to MSS.
The described method of setting up the pairing IP carrying in each IP address that is allocated successfully is:
After MIP Client Agent among the ASN is received the IP address that the DHCP Server among the CSN sends by ASN-GW, this IP address is carried in the MIP register requirement sends to CSN by ASN-GW; CSN sets up the IP carrying with ASN-GW after receiving the MIP register requirement, and the IP address that comprises in the MIP register requirement is bound mutually with the IP carrying of foundation.
Compared with prior art, the implementation method of setting up bearer context for data transmission provided by the present invention, distribute a plurality of IP address for MSS in the section at one time, and for setting up corresponding IP carrying respectively in each the IP address that is allocated successfully in a plurality of IP address of distributing, to set up successful IP again and carry pairing IP address notification MSS, guarantee that MSS can use the pairing a plurality of IP carrying transmission data in a plurality of IP address of application, has obviously improved communication quality and the user satisfaction of MSS.
Description of drawings
Fig. 1 is a prior art Wimax networking diagram;
Fig. 2 sets up flow chart for the IP carrying that prior art is acted on behalf of under mobile IP (PMIP) mode;
Fig. 3 sets up flow chart for the carrying of the IP under the PMIP mode of a preferred embodiment of the present invention;
Fig. 4 sets up flow chart for the carrying of the IP under the PMIP mode of another preferred embodiment of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments to the detailed description of the invention.
The implementation method of setting up bearer context for data transmission provided by the invention, according to MSS at one time the section in the request the IP number of addresses, by DHCP Server is that MSS distributes the corresponding number of I P address, and successful IP address allocated sent to the MIP Client Agent, set up the pairing IP carrying in each IP address that is allocated successfully by MIP Client Agent triggering CSN and ASN-GW, and CSN sets up result notification ASN-GW with the IP carrying;
ASN-GW according to the IP that receives carrying set up the result and determine whether the IP carrying sets up success, and will set up successful IP and carry pairing IP address notification MSS, so that MSS can use this IP address transceive data.
Referring to Fig. 3, Fig. 3 sets up flow chart for the carrying of the IP under the PMIP mode of a preferred embodiment of the present invention, and this flow process may further comprise the steps:
Step 301:MSS is to ASN-GW broadcasting DHCP Discover request, the IP address that is used to communicate by letter with application.IP address of the every application of MSS all can send a DHCP Discover request, so the described DHCP Discover that MSS sends asks to be one also may to be a plurality of.
ASN-GW sends to DHCP Server with this request after receiving DHCP Discover request, and said here DHCP Server is generally a plurality of.The DHCP Server that each receives DHCP Discover request, the identical IP address of DHCP Discover request quantity of from its own IP address pond, choosing respectively and receiving, and the IP address of choosing is carried in the DHCP Offer message sends to MSS.
After MSS receives a plurality of DHCP Offer messages from a plurality of DHCP Server, from the DHCPOffer message, choose the IP address that self will apply for, carry the DHCP Request of IP address of choosing and the DHCP Server sign that this IP address is provided by ASN-GW to all DHCPServer broadcasting.
After the DHCPServer that matches with the DHCP Server that comprises among described DHCP Request sign receives this DHCP Request, assignment record according to self IP address judges whether the IP address that comprises among the DHCPRequest also is not assigned with, if then send the DHCP Ack that comprises this IP address to ASN-GW; Otherwise, just send the DHCP failure (Nack) that comprises this IP address to ASN-GW.
Step 302:ASN-GW is according to judging whether success of IP address assignment from the message of DHCP Server, if that receive is DHCP Ack, ASN-GW determines that then the IP address assignment that comprises among this DHCP Ack successfully, enters step 304; If that receive is DHCP Nack, the IP address assignment failure that comprises among then definite this DHCP Nack of ASN-GW enters step 303.
Step 303:ASN-GW sends the IP address assignment failed message by the BS that MSS inserts to MSS, at least comprise in this message that MSS will apply for but the described IP address that has been assigned with, to guarantee not use the IP address transceive data that comprises in this message after MSS receives this message, process ends afterwards.
Step 304:ASN-GW is carried on MSS ID and successful IP address allocated and sends to the MIP Client Agent in the PoA address notification.
After step 305:MIP Client Agent is received successful IP address allocated from ASN-GW, successful IP address allocated is sent to HA among the CSN by the FA among the ASN-GW, HA sets up corresponding IP carrying respectively at the IP address of receiving, and with in the man-to-man corresponding IP carrying that is tied to foundation in the IP address of receiving.Certainly, in actual applications, the IP address pairing IP carrying meeting that has is because of former thereby foundation failures such as system resource deficiencies.Therefore, no matter whether successfully HA sets up described IP carrying, all will send the IP carrying that comprises the IP address to the MIP Client Agent by ASN-GW and set up the result.
The method that the result is set up in transmission IP carrying has multiple, as: HA sends the IP carrying to the MIP Client Agent and sets up success message when the IP carrying is set up successfully, set up failed message and send the different IP carrying of type of message to the MIP Client Agent when failure is set up in the IP carrying; Or no matter still failure is set up successfully in the IP carrying, HA sends identical signaling/type of message to the MIP Client Agent, and in this signaling/type of message, carry IP carrying and set up result's sign, IP carrying is at this moment set up the result and is just carried with IP and set up the result and identify expression.
The MIP Client Agent is set up the result with this IP carrying and is sent to ASN-GW after receiving that the result is set up in described IP carrying.
After step 306:ASN-GW receives that from the IP of MIP Client Agent the result is set up in carrying, set up result's type of message or the sign that expression IP carrying is set up successfully or failed according to this IP carrying, determine this IP carrying set up result institute at IP carry whether set up success, if the IP carrying is set up successfully, enter step 307; Otherwise, enter step 308.Here, the described type of message of setting up the result according to IP carrying is meant that the MIP Client Agent sends to ASN-GW directly that success message is set up in the IP carrying or failed message is set up in the IP carrying.
Step 307:ASN-GW will set up successful IP and carry pairing IP address and be carried on and send to MSS among the DHCPAck.After MSS receives this DHCP Ack, just can use the IP address transceive data that comprises among the DHCP Ack, the data of transmitting-receiving can be transmitted in the IP of this IP address binding carrying, and process ends.
The IP that step 308:ASN-GW will set up failure carries pairing IP address notification MSS and Dynamic Host Configuration Protocol server.After MSS receives described IP address, do not use this IP address transceive data.After Dynamic Host Configuration Protocol server is received described IP address, discharge this IP address, make this IP address be in the state that is not assigned with again.
As seen, all oriented MSS sends the operation of IP address in step 307 and the step 308, whether available in order to make MSS can discern the IP address of receiving, described IP address can be carried in the different message of type, or in the identical message of type, add sign, whether available to indicate the IP address that comprises in the message.
By the above as seen, the foundation of the distribution of a plurality of IP address and a plurality of IP carrying is that branch successively carries out, that is: distribute corresponding a plurality of IP address in a period of time according to a plurality of DHCP Discover requests earlier from MSS, set up corresponding a plurality of IP carrying in a period of time at a plurality of IP address that becomes the distribution of work afterwards, the more successful IP that sets up is carried pairing IP address notification MSS.Accomplish this point, the preferably first buffer memory of ASN-GW is from each DHCP Ack at MSS of Dynamic Host Configuration Protocol server, successful IP address allocated all is carried among the DHCP Ack and when sending to ASN-GW in all IP addresses of MSS request, the IP address that comprises among all DHCP Ack at MSS that ASN-GW just will receive is carried on and sends to the MIP Client Agent in the PoA address notification, makes the MIP Client Agent can trigger CSN and ASN-GW and sets up the pairing IP carrying of a plurality of successful IP address allocated simultaneously.
In actual applications, also can not consider the simultaneity that a plurality of IP carryings are set up, but handle the foundation of the IP carrying of the distribution of each IP address and this IP address correspondence respectively, that is: Dynamic Host Configuration Protocol server distributes an IP address according to each the DHCP Discover request from MSS for MSS, set up the IP carrying of this IP address correspondence afterwards, if this IP carrying is set up successfully, then this IP is carried pairing IP address notification MSS.
Apply for simultaneously that with same MSS two IP addresses are example below, the inventive method is described in detail.
Referring to Fig. 4, Fig. 4 sets up flow chart for the carrying of the IP under the PMIP mode of another preferred embodiment of the present invention, and this flow process may further comprise the steps:
Step 401:MSS in a short period section by the BS that inserts to two DHCP Discover requests of ASN-GW broadcasting, two IP addresses that are used to communicate by letter with application.Can think that two DHCP Discover ask to broadcast simultaneously.
After step 402:ASN-GW received two DHCP Discover request from MSS, to all DHCP Server broadcasting, said here DHCP Server was generally a plurality of with two requests.
Step 403: each receives the DHCP Server of described DHCP Discover request, an IP address is chosen in request from its own IP address pond at each DHCP Discover, and the IP address of choosing is carried on respectively in the different DHCP Offer messages sends to ASN-GW.
Step 404:ASN-GW will send to MSS from the DHCP Offer message of DHCP Server.
After step 405 is received a plurality of DHCPOffer messages from a plurality of DHCP Server to step 406:MSS, from DHCP Offer message, choose two IP addresses as the IP address that will apply for, by two DHCP Request of ASN-GW broadcasting, the DHCP Server sign that carries an IP address of choosing among each DHCP Request respectively and this IP address is provided.
Step 407: when with DHCP Request in after the DHCP Server that matches of the DHCP Server sign that comprises receives DHCP Request, send DHCP Ack to ASN-GW, be included as MSS success IP address allocated among this DHCPAck, suppose that DHCP Server is that the IP address that MSS distributes is IP1, another IP address is IP2.
After step 408:ASN-GW receives the DHCP Ack at IP1, IP2 from DHCP Server, read the IP1, the IP2 that comprise among the DHCP Ack, IP1 is carried pairing PoA address as the follow-up IP that will set up, and to the PoA address notification of MIP Client Agent transmission at IP1, this notice comprises MSS sign, IP1 at least.
After step 409:MIP Client Agent is received PoA address notification from ASN-GW, send PoA address notification response at IP1 to ASN-GW.
The IP2 that step 410:ASN-GW will read from DHCP Ack also carries pairing PoA address as the follow-up IP that will set up, and to the PoA address notification of MIP Client Agent transmission at IP2, this notice comprises MSS sign, IP2 at least.
After step 411:MIP Client Agent is received the PoA address notification at IP2 from ASN-GW, send PoA address notification response at IP2 to ASN-GW.
Step 408 to step 409 can be carried out simultaneously with step 410 to step 411.
Step 412:MIP Client Agent reads MSS sign, the IP1 address in the PoA address notification, and in the FA address of self storing, HA address, choose FA address and HA address, FA in the pairing ASN-GW in FA address that chooses sends the MIP register requirement at IP1 afterwards, comprises described FA address, HA address and IP1 that the MIP Client Agent is chosen in this request at least.
FA among the step 413:ASN-GW reads the HA address that comprises in this request, and this request is sent to the pairing HA in this HA address after receiving MIP register requirement at IP1.
After step 414 is received MIP register requirement at IP1 to step 415:HA, set up the IP transmission bearer between HA and the FA, and the IP1 in the MIP register requirement is tied on the IP transmission bearer of foundation, be that the packet of IP1 is responsible for transmission by this IP transmission bearer without exception to guarantee follow-up IP address.Afterwards, HA responds to the MIP register requirement that the MIP Client Agent sends at IP1 by ASN-GW, and this response comprises the MSS sign, successfully sign is set up in IP1, IP carrying.
Step 416:MIP Client Agent receives that at after the response of the MIP register requirement of IP1 the described FA in ASN-GW sends and carries the MSS sign, IP1, IP carrying is set up the DHCP that successfully identifies and opened message.
Step 417 is received to step 418:FA that DHCP from the MIP Client Agent opens and is read the IP carrying that comprises in this message after the message and sets up successfully and identify, pairing IP carrying can be carried out normal transfer of data according to the IP1 that comprises in definite this message of this sign, and transmits the DHCP Ack that comprises MSS sign, IP1 to MSS.
After MSS receives described DHCP Ack, read the IP1 that wherein comprises and also determine to use the IP1 transceive data of application.The data of MSS application IP1 transmitting-receiving can transmission in the IP carrying of IP1 binding.
Step 419:MIP Client Agent reads MSS sign, the IP2 address in the PoA address notification, and in the FA address of self storing, HA address, choose FA address and HA address, FA in the pairing ASN-GW in FA address that chooses sends the MIP register requirement at IP2 afterwards, comprises described FA address, HA address and IP2 that the MIP Client Agent is chosen in this request at least.The FA address of choosing in this step, HA address can be distinguished identical or different with the described FA address of choosing in the step 412, HA address.
FA among the step 420:ASN-GW reads the HA address that comprises in this request, and this request is sent to the pairing HA in this HA address after receiving MIP register requirement at IP2.
After step 421 is received MIP register requirement at IP2 to step 422:HA, set up the IP transmission bearer between HA and the FA, and the IP2 in the MIP register requirement is tied on the IP transmission bearer of foundation, be that the packet of IP2 is responsible for transmission by this IP transmission bearer without exception to guarantee follow-up IP address.Afterwards, HA responds to the MIP register requirement that the MIP Client Agent sends at IP2 by ASN-GW, and this response comprises the MSS sign, successfully sign is set up in IP2, IP carrying.
Step 423:MIP Client Agent receives that at after the response of the MIP register requirement of IP2 the described FA in ASN-GW sends and carries the MSS sign, IP2, IP carrying is set up the DHCP that successfully identifies and opened message.
Step 424 is received to step 425:FA that DHCP from the MIP Client Agent opens and is read the IP carrying that comprises in this message after the message and sets up successfully and identify, pairing IP carrying can be carried out normal transfer of data according to the IP2 that comprises in definite this message of this sign, and transmits the DHCP Ack that comprises MSS sign, IP2 to MSS.
After MSS receives described DHCP Ack, read the IP2 that wherein comprises and also determine to use the IP2 transceive data of application, the data of MSS application IP2 transmitting-receiving can be transmitted in the IP carrying of IP2 binding.
Step 412 to step 418 can be carried out simultaneously with step 419 to step 425.
In the above-described step 407,, wherein comprise the IP address of distributing failure, suppose that IP1 distributes failure if DHCP Server then sends DHCP Nack to ASN-GW at the address assignment failure of IP1 or IP2.So, ASN-GW then determines that according to the DHCP Nack from DHCP Server IP1 distributes failure, and sends the IP address assignment failed message to MSS, comprises IP1 in this message at least.Like this, MSS just can not use the IP1 transceive data.
And, because IP1 distributes failure, step 408,409 and step 412 to these steps relevant of step 418 with IP1 also will no longer carry out.
Certainly, after if HA receives the MIP register requirement that comprises IP1 or IP2, set up the pairing IP carrying of IP1 or IP2 failure, HA then responds to the MIP register requirement that the MIP Client Agent sends at IP1 or IP2 by ASN-GW in step 414 or step 421, and this response comprises MSS sign, IP1 or IP2, the failure sign is set up in the IP carrying.Suppose the IP carrying foundation failure of IP1 correspondence, HA then responds to the MIP register requirement that the MIP Client Agent sends at IP1 by ASN-GW in step 414, and this response comprises MSS sign, IP1, IP carrying foundation failure sign.This IP carrying is set up failure sign and aforesaid IP carrying and is set up and successfully identify equally, can pass through step 415,416 and be brought in the step 417.
In step 417, ASN-GW reads the DHCP that receives and opens the IP carrying that comprises in the message and set up the failure sign, and determines that according to this sign IP carrying of IP1 correspondence sets up failure.Afterwards, ASN-GW is carried on IP1 among the DHCP Nack and sends to MSS, comprises IP1 among this DHCP Nack.After MSS receives DHCP Nack, do not use the IP1 transceive data that wherein comprises.
Meanwhile, ASN-GW also sends the DHCP that comprises IP1 to Dynamic Host Configuration Protocol server and discharges (Release) request, after Dynamic Host Configuration Protocol server is received this request, discharges the IP1 that comprises in this request, makes IP1 be in the state that is not assigned with again.
Certainly, ASN-GW can also be further by and BS between signaling/message and the air interface management face message between BS and the MSS, to set up failure and cause the disabled relevant information notice of IP1 MSS owing to IP carrying, and make MSS know that the disabled reason of IP1 is that failure is set up in the IP carrying of IP1 correspondence according to the information of receiving.
Above-mentioned IP carrying is set up successfully, and sign, IP carrying foundation failure sign can be referred to as the IP carrying and set up result's sign.
By the above as can be seen, the implementation method of setting up bearer context for data transmission provided by the present invention, support same MSS to apply for a plurality of IP address simultaneously and set up corresponding a plurality of IP to carry, and can make MSS know that the IP that successfully sets up carries pairing IP address, guarantee that MSS can use this normal transceive data in IP address, effectively improve the communication quality of MSS, also can obviously improve user satisfaction.

Claims (8)

1. an implementation method of setting up bearer context for data transmission is applied to the World Interoperability for Microwave Access, WiMax Wimax network by access service network gateway ASN-GW connection access service network ASN and connectivity serving network CSN, it is characterized in that this method comprises:
Mobile subscriber station MSS obtains one or more Internet protocols IP address to the network side request in the section at one time, network side is that described MSS distributes the corresponding number of I P address according to the request of receiving, set up the pairing IP in each IP address that is allocated successfully carrying, and will set up successfully or the IP that fails carries pairing IP address notification MSS.
2. the method for claim 1 is characterized in that, the Dynamic Host Configuration Protocol server DHCP Server of MSS in CSN sends request;
Then described network side will be set up successfully or the IP that fails carries pairing IP address notification MSS and is: CSN sets up result notification ASN-GW with the IP carrying; ASN-GW according to the IP that receives carrying set up that the result will set up successfully or the IP that fails carries pairing IP address notification MSS.
3. method as claimed in claim 2 is characterized in that, described IP carrying is set up the result and represented that IP carries the IP carrying of setting up successfully or failing and sets up result's sign, and the method that described CSN sets up result notification ASN-GW with the IP carrying is:
CSN sends by the mobile IP MIP Client Agent of ASN-GW in ASN and comprises MSS sign, IP address, IP carrying and set up the MIP register requirement of result's sign and respond;
The MIP Client Agent receives from after the response of the MIP register requirement of CSN, sends to ASN-GW and carries MSS sign, described IP address, described IP carrying and set up the DHCP that the result identifies and open message.
4. method as claimed in claim 2, it is characterized in that, it is that expression IP carrying is set up successfully or the IP that fails carries and sets up the result and identify that the result is set up in described IP carrying, and the method that described ASN-GW will set up successfully or the IP that fails carries pairing IP address notification MSS is:
ASN-GW judges that whether result's sign is set up in the IP carrying of receiving is that successfully sign is set up in the IP carrying, if ASN-GW then transmits DHCP to MSS and confirms Ack, comprises the MSS sign and sets up successful IP and carry pairing IP address among this DHCP Ack; Otherwise ASN-GW transmits DHCP failure Nack to MSS, comprises the IP that sets up failure among this DHCP Nack and carries pairing IP address.
5. the method for claim 1 is characterized in that, when setting up the pairing IP in each IP address that is allocated successfully carrying, at the IP carrying of setting up failure, this method further comprises:
ASN-GW by and the base station BS that inserts of MSS between signaling/message and the air interface management face message between this BS and the MSS, will set up failure and cause the corresponding IP address of IP carrying disabled information notice MSS owing to the IP carrying.
6. the method for claim 1 is characterized in that, when setting up the pairing IP in each IP address that is allocated successfully carrying, at the IP carrying of setting up failure, this method further comprises:
The IP that ASN-GW will set up failure carries DHCPServer among the pairing IP address notification CSN; After DHCP Server receives described IP address, discharge this IP address.
7. the method for claim 1 is characterized in that, when network side was MSS distributing IP address, at the IP address of distributing failure, this method further comprised:
Network side sends the DHCP Nack that comprises the IP address of distributing failure to ASN-GW; ASN-GW sends the IP address assignment failed message that comprises the IP address of distributing failure by the BS that MSS inserts to MSS.
8. method as claimed in claim 2 is characterized in that, the described method of setting up the pairing IP carrying in each IP address that is allocated successfully is:
After MIP Client Agent among the ASN is received the IP address that the DHCP Server among the CSN sends by ASN-GW, this IP address is carried in the MIP register requirement sends to CSN by ASN-GW; CSN sets up the IP carrying with ASN-GW after receiving the MIP register requirement, and the IP address that comprises in the MIP register requirement is bound mutually with the IP carrying of foundation.
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CN101765087B (en) * 2008-11-10 2013-03-13 西安新邮通信设备有限公司 Method for user position update in the interwork of WiMAX access network and 3G core network
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