CN1897743B - Method for supporting and switching multiple conversation in wireless access network - Google Patents
Method for supporting and switching multiple conversation in wireless access network Download PDFInfo
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- CN1897743B CN1897743B CN2005100828465A CN200510082846A CN1897743B CN 1897743 B CN1897743 B CN 1897743B CN 2005100828465 A CN2005100828465 A CN 2005100828465A CN 200510082846 A CN200510082846 A CN 200510082846A CN 1897743 B CN1897743 B CN 1897743B
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Abstract
The invention discloses a switching method under a multi-session in a radio access network, comprising the following steps: when an MIP client side agent module receives a switching request message carrying session information groups which is sent by a mobile management unit in an access service network, according to the session information groups, determining tunnels to be built; initiating MIP registration aiming at the tunnels to be built; judging whether the tunnels to be built initiate the MIP registration, if so, returning the switching result information to the mobile management unit in the access service network; or else returning to the step of initiating MIP registration aiming at the tunnels to be built. The invention can solve problem of R3 switch when the multi-session is carried in the same tunnel, and the carrying problem of rebuilding the multi-session during the R3 switch. The scheme of the invention is simple and easy to implement.
Description
Technical field
The present invention relates to the communications field, relate in particular to the changing method of supporting in a kind of Radio Access Network (ASN) under many sessions.
Background technology
Extensive use along with the flourish and wireless network of internet service; General grouped wireless network (GPRS), third generation communication network (3G), microwave access global intercommunication network (WiMAX) and back 3G wireless systems such as (B3G, Beyond 3G) have obtained number of applications and concern.The increase of number of users and the increase of user's request are that wireless access network system provides new demand: requirement can be supported big capacity, the multiple business that big data quantity and different service quality require.The function of many session managements just.
Wireless access network is mainly accomplished provides business to provide Packet Service between network and the mobile subscriber to transmit or the function of route.Do not consider other internal units in the Access Network, we will adopt WiMAX network architecture system shown in Figure 1 to carry out related description when technical description subsequently, but technology provided by the present invention includes but not limited to the application in the WiMAX system.
The functional interpretation of each network element among Fig. 1 is following:
ASN:ASN is defined as the network function set that the wireless access service is provided for the WiMAX terminal, and ASN has comprised base station (BS) and access service network gateway (ASN-GW) network element.ASN mainly provides following function:
The function of BS:
-provide BS to be connected with the L2 of mobile subscriber station (MSS);
-RRM;
-measure and power control;
The compression and the encryption of-the data of eating dishes without rice or wine;
The function of ASN-GW:
-for MSS authentication function proxy is provided function;
-network enabled service provider's (NSP) network is found and is selected;
-the Relay function (like IP address assignment) of L3 information is provided for MSS;
-RRM;
ASN-GW can be divided into ASN-GW decision point (DP) function and ASN-GW execution point (EP) function on logic function, wherein DP mainly is the entity of some chain of command functions of processing, and EP is the entity of deal with data surface function.Whether do not limit them in the present invention geographically separates.
Tunnel management between the-ASN-CSN is equivalent to the external agent (FA) in the mobile IP technology.
Except above-mentioned functions, can also comprise (non-essential function):
-ASN intra;
-MSS paging and location management;
The registration of-vision location;
CSN:CSN is defined as to the WiMAX terminal IP is provided Connection Service.CSN mainly provides following function:
The IP address assignment of-MSS;
-Internet inserts;
-authentication, authentication, charging proxy (AAA proxy) or server;
-based on user's authorization control;
-ASN is equivalent to the home agent (HA) in the mobile IP technology to the tunnel of CSN;
-WiMAX user's charging and the clearing between the operator;
Tunnel under the-roaming condition between the CSN;
Switching between the-ASN;
-various WiMAX services (like location-based business, multi-medium multi-packet broadcasting and broadcasting service, IP Multimedia System business);
MSS:MSS is a mobile subscriber equipment, and the user uses this devices accessing WiMAX network.
From ASN IP data carried by data face; The grouping busihess data of descending MSS is reported the tunnel (Interface R3) that passes through the foundation between the ASN-GW HA and the ASN from the HA of CSN; Be sent among the ASN; And send on the BS through the ASN internal interface by ASN-GW, utilize the R1 interface between BS and the MSS that the data of MSS are sent on the MSS then.Up datagram also sends among the ASN through the MSS that associates, and sends in the outer net through the tunnel between ASN GW and the HA.
See the function that the session between any one MSS and the business network (session) all need utilize the IP of ASN to carry and transmit from the session service aspect.But to different sessions; Session that might be all is that the tunnel through same ASN-GW and HA carries; Also might be different session be carried with different tunnels between the HA by ASN-GW, also might different sessions is by the tunnel carrying of the HA foundation among ASN-GW and the different CSN.In the notion that moves IP,, will have a plurality of attachment points (PoA) address to this MSS so if having many tunnels for a MSS.
When switching or because switching that the network side resource management is triggered the time owing to moving of MSS; If the HA that causes taking place this MSS owing to the variation of ASN-GW is to when the ASN tunnel changes; The R3 that Inter ASN-GW promptly takes place moves, and then need rebulid the tunnel that carries each session.The present invention will propose a kind of improving one's methods of message of switching, to support the switching under many session case.
Under the PMIP pattern; The Client Agent of MIP is in ASN; The processing of requests such as foundation/release of MIP and response message is transparent for MSS; The Client Agent of MIP or through FA or directly and foundation/releases of accomplishing all MIP between the HA wait the initiation of request and response message and reception to operate, thereby the IP tunnel between foundation/release ASN-GW and the HA.
In mobile IP (MIP) process; The client of MIP on MSS, thereby MSS or through FA or directly and foundation/releases of accomplishing all MIP between the HA wait the initiation of request and response message and reception to operate the IP tunnel between foundation/release ASN-GW and the HA.For this pattern, we are referred to as CMIP.
The technical scheme of prior art 1 is to propose among the motion 050607_NWG_01r8_PMIP-Inter-ASN-mobility-accepted that switches under the PMIP situation of in the NWG of WiMAX Forum working group meeting, passing through.Under the PMIP situation; The mobile management unit that R3 switches in intra ASN triggers; And through handoff request (R3_Handover.Request); The sign of this MSS is provided, and the MIP that the client that activates MIP has initiated to set up new FA and the tunnel between the HA goes registration process (reach simultaneously discharge original FA and the tunnel between the HA).Received the response that MIP registers up to the MIP client, the MIP client just returns to Intra ASN mobile management unit with switching result through handoff response (R3_Handover.Reply).Thereby accomplished the handoff procedure of whole R3 mobile management.Whole process is as shown in Figure 2.Can see that from Fig. 2 its main flow process is following:
011-012) before switching, MSS and CSN are through the air interface of MSS and BS, and the ASN internal tunnel between BS and the service ASN-GW passes through tunnel transmission/exchange session business datum that mobile IP protocol is set up between service ASN-GW and the HA.
013) because moves at the MSS terminal or the needs of ASN network resource management; The mobile management unit of Intra-ASN has triggered the R3 handoff procedure; If the switching that triggers owing to the needs of ASN network resource management, be to trigger the R3 handoff procedure by the mobile management unit of network resource management unit notice Intra-ASN earlier so.
The MIP Client Agent just starts the heavy registration process of MIP after the R3_Handover.Request message that has comprised MSS sign and target ASN-GW that the mobile management unit of receiving Intra-ASN sends over.
014-017) the contextual renewal process of MIP: the MIP Client Agent sends the MIP registration message and transmits heavy register requirement through the FA module in the middle of the target ASN-GW to HA; Require HA that the IP address of this MSS in the message is bound together with new ASN-GW: promptly to require to discharge tunnel for the corresponding HA ASN-GW in this MSS IP address to the source; Set up the tunnel of the corresponding HA in this MSS IP address simultaneously, thereby all IP datagrams relevant with the IP address of this MSS are just carried by new tunnel to target ASN-GW.
018) receive after the MIP registration reply message, if success, the MIP Client Agent upgrades the R3 information of this MSS through the mobile management unit of R3_Handover.Reply message informing Intra-ASN; If failure, the MIP Client Agent recovers the original state of MSS again through the mobile management unit of R3_Hndover.Reply message informing Intra-ASN so.
019-0111) with 014～018 while, set up the inner R6 tunnel of new ASN so that the datagram of MSS is passed through the session service data on the tunnel transmission upper strata BS and target ASN-GW and target ASN-GW and the HA from base station (BS) to target ASN-GW.Through setting up the R4 tunnel between the ASN-GW, simultaneously as switching the ephemeral data passage between the ASN-GW in the transient process.Deletion is to the source ASN-GW of this MSS and the R6 tunnel between the BS.
In prior art 1, if having many tunnels to carry a plurality of sessions to this MSS, adopting so should technology, is to reach the bearing tunnel of setting up all sessions through a MIP register requirement only.Article one, the foundation in tunnel success also can not mean the success of the handoff procedure of whole R3 mobile management.
Prior art 2 is the methods of in the NWG of WiMAX Forum working group meeting, passing through that propose among the motion 050602_NWG_05_Client_MIP_Architecture-accepted of CMIP that are directed against.Under the CMIP pattern, the processing procedure of the client of MIP on MSS.Service ASN-GW unit originally is after having triggered handoff procedure; Initiated R3 handoff request (R3_Handover.Request) to target ASN-GW; And the sign of this MSS is provided; Send the FA advertisement by target ASN-GW FA to this MSS, notice initiates to set up new FA and the MIP registration process in the tunnel between the HA (discharging original service ASN-GW and the tunnel between the HA simultaneously) in the MIP client on the MSS.Responded the response of MIP registration up to HA, and after being transmitted to MSS by target ASN-GW FA, target ASN-GW FA just returns to original service ASN-GW unit with the result through R3 handoff response (R3_Handover.Reply).Thereby accomplished whole R3 handoff procedure.Whole process is as shown in Figure 2.
021-022) before switching, MSS and CSN are through the air interface of MSS and BS, and the ASN internal tunnel between BS and the service ASN-GW passes through tunnel transmission/exchange session business datum that mobile IP protocol is set up between service ASN-GW and the HA.
023) ASN-GW of source service triggers R3 and switches, and the R3_Handover.Request message that will comprise the MSS sign sends to target ASN-GW.
024) receive switch message after, the MIP FA module among the target ASN-GW is with FA advertisement information notice MSS, variation has taken place in the FA that tells MSS to adhere to, and requires the MIP client among the MSS to initiate the heavy register requirement of MIP, rebulids the R3 tunnel of HA to target FA.
025-026) the MIP client is sent the MIP registration message and is transmitted heavy register requirement through the FA module in the middle of the target ASN-GW to HA; Require HA that the IP address of this MSS in the message is bound together with new ASN-GW: promptly to require to discharge tunnel for the corresponding HA ASN-GW in this MSS IP address to the source; Set up the tunnel of the corresponding HA in this MSS IP address simultaneously, thereby all IP datagrams relevant with the IP address of this MSS are just carried by new tunnel to target ASN-GW.
When 027) the FA module in the middle of target ASN-GW was received the MIP register response and is transmitted to MSS, the FA module was according to the R3 information of the result in the registration reply message (registration failure or success) through this MSS of mobile management unit renewal of R3_Handover.Reply message informing Intra-ASN.
028-0210) with step 027) simultaneously, set up the inner R6 tunnel of new ASN so that the datagram of MSS is passed through the session service data on the tunnel transmission upper strata BS and target ASN-GW and target ASN-GW and the HA from BS to target ASN-GW.Through setting up the R4 tunnel between the ASN-GW, simultaneously as switching the ephemeral data passage between the ASN-GW in the transient process.Deletion is to the source ASN-GW of this MSS and the R6 tunnel between the BS.
Prior art 2 shortcomings are following:
First; Shortcoming is with technology one; If have many tunnels to carry a plurality of sessions to this MSS; Adopting so should technology, is to reach the bearing tunnel of setting up all sessions through a MIP register requirement only, and the foundation success in a tunnel also can not mean the success of the handoff procedure of whole R3 mobile management.
Second; From the handoff request message of original service ASN-GW band, the information of session should be arranged, judge it is the MIP registration process that needs to initiate how many times by target ASN-GW like this; Set up many tunnels of HA to new FA; Target ASN-GW need know the information of the session that each carries above tunnel simultaneously, be convenient to charge statistics or the like function and session management after this etc., but in scheme, can't obtain relevant information.
Summary of the invention
It is a kind of in wireless access network that the present invention provides, and supports the R3 handover scheme under the many session case of MSS.To solve in the prior art, can't handle the problem of the switching under the many session case of MSS.
The inventive method comprises:
Support the changing method under many sessions in a kind of Radio Access Network, may further comprise the steps:
A, the inner mobile management unit of access service network send handoff request message to the mobile IP customer terminal proxy module, carry the session information group in the described handoff request message;
B, mobile IP customer terminal proxy module need to confirm the tunnel of foundation according to described session information group;
C, initiate mobile IP registration to the tunnel of need setting up;
Whether D, judgement have all initiated mobile IP registration to the tunnel that needs to set up, if get into step e, if do not return step C;
E, mobile IP customer terminal proxy module return switching result information to the inner mobile management unit of said access service network.
Before said steps A, also comprise step: network resource management unit notice access service network content mobile management unit triggers and switches.
Described session information group comprises one of following information or combination:
Target access service network gateway, session id, attachment point address, home agent HA address and mobile subscriber station ID.
Described mobile IP registration is by the mobile IP customer terminal agency described attachment point address and destination service access service network gateway to be bound.
In said step C,, then keep former tunnel to connect if there is the tunnel that needs to set up to initiate the mobile IP registration failure.
Said switching result information comprises session switching result information sets, comprises mobile subscriber station ID, session id, this session switching result in the described session switching result information sets.
Support the changing method under many sessions in a kind of Radio Access Network, it is characterized in that may further comprise the steps:
A, source service access service network gateway send handoff request message to external agent's module of destination service access service network gateway, carry the session information group in the described handoff request message;
External agent's module of b, destination service access service network gateway according to fast session information group, need to confirm the tunnel of setting up;
C, destination service access service network gateway are initiated mobile IP registration to the tunnel that needs to set up;
D, destination service access service network gateway judge to the tunnel that needs to set up whether all initiated mobile IP registration, if get into step e, if do not return step c;
External agent's module of e, destination service access service network gateway is returned switching result information to source service access service network gateway.
Wherein, described session information group comprises one of following information or combination:
Target access service network gateway, session id, attachment point address, home agent HA address and mobile subscriber station ID.
In said step b, this method also comprises step:
External agent's module of destination service access service network gateway is with described initiation mobile IP registration notice mobile subscriber station.
Said step c further may further comprise the steps:
External agent's modules A SN-GW FA of destination service access service network gateway is to the tunnel that needs to set up, and the mobile IP customer terminal of notice on mobile subscriber station MSS initiated mobile IP registration.
In above-mentioned step, the mobile IP customer terminal of described notice on mobile subscriber station MSS initiated the step of mobile IP registration, comprising:
Through advertisement information or the message/signaling on the R6 interface between base station BS and the destination service access service network gateway and the air interface management message between BS and the MSS of said external agent's module, the mobile IP customer terminal of notice on MSS initiated mobile IP registration.
In said step c, the mobile IP registration failure is initiated in the tunnel of setting up if desired, then keeps former tunnel to connect.
Said object information comprises: session switching result information sets comprises mobile subscriber station ID, session id, this session switching result in the described session switching result information sets.
Beneficial effect of the present invention is following:
The present invention can solve the problem that the R3 of a plurality of sessions carry on same tunnel switches, and in the carrying problem that a plurality of sessions take place to rebulid when R3 switches, the present invention program is simple, is easy to realize.
Description of drawings
Fig. 1 is a WiMAX schematic network structure in the prior art;
Fig. 2 is the switching sketch map under the PMIP pattern in the prior art;
Fig. 3 is the switching sketch map under the CMIP pattern in the prior art;
Fig. 4 is the switching sketch map of the present invention program under the PMIP pattern;
Fig. 5 is the switching sketch map of the present invention program under the CMIP pattern.
Embodiment
Below in conjunction with Figure of description embodiment of the present invention is described.
The present invention proposes a kind of in wireless access network, supports the R3 handoff procedure under the many session case of MSS.Can when switching, set up the bearing tunnel of each dialogue effectively.To PMIP and CMIP pattern, the present invention can have two schemes, and narration is as follows respectively:
Switching under the embodiment 1:PMIP pattern.
Under the PMIP pattern; The Client Agent of MIP is in ASN; The processing of request such as foundation/release of MIP and response message is transparent for MSS, the Client Agent of MIP or through FA or directly and foundation/releases of accomplishing all MIP between the HA wait the initiation of request and response message and reception to operate.Handoff procedure under the PMIP pattern may further comprise the steps:
(11), need the session information of this MSS is sent to the MIP Client Agent by intra ASN MM in the R3_Handover.Request message the inside of initiating to switch.This session information can comprise: Session ID; Attachment point address (PoA) among the MIP, corresponding HA address, MSS ID etc.; Consider it might is to switch a batch session, these session informations can be made into one group of table that contains Session ID, PoA address, HA address.
In the prior art, the session information the inside has only comprised MSS ID, Target ASN-GW; Transaction ID, these are enough usefulness under single session case, because under single session case; Only have a PoA address for any one MSS, also only need notice to bind the HA release of this MSS information and the tunnel between the original ASN-GW, set up the tunnel of target ASN-GW and HA; But under the situation of the many sessions of MSS, maybe different sessions be to be carried on the different tunnel of HA and ASN-GW, and possibly be different HA and the tunnel between this ASN-GW; So just need to increase session ID, PoA, the tabulation of HA address; Each session to this MSS; So tlv triple can all be set, have the session of this MSS of what needs switching just to have what such tlv triple, thereby constituted a triple table.
If store the corresponding PoA address of each session of each MSS at the MIP Client Agent, the PoA address is an option in message so.
(12) at the MIP Client Agent according to session information; (this address can obtain from switch message particularly to switch the pairing PoA of each session address in the message; If store the corresponding PoA address of each session of each MSS at the MIP Client Agent; So just can be) according to searching acquisition in the session of MIP Client Agent storage and the correspondence table of PoA address; The tunnel number of confirm to need setting up, if the corresponding identical PoA address of a plurality of sessions is arranged, that means and on same tunnel, has carried a plurality of sessions.Storage update is convenient to later session management at the MIP Client Agent but the ID of session needs the while.
Illustrate: if the triple table in the message that receives is: (1,192.1.1.2,192.38.64.3) (2,192.1.1.5; 192.38.64.7) (3,192.1.1.2,192.38.64.3) (4,192.1.1.2; 192.38.64.3) (5,192.1.1.7,192.38.64.3); To PoA address 192.1.1.2 three sessions are arranged so, just have three sessions all to be based upon on the tunnel of ASN-GW and this HA of 192.38.64.3, this is a tunnel; To PoA address 192.1.1.5 a session is arranged, this session is to be based upon on the tunnel of ASN-GW and this HA of 192.38.64.7, and this is second tunnel; To PoA address 192.1.1.7 a session is arranged, this session is to be based upon on the tunnel of ASN-GW and this HA of 192.38.64.3, and this is the 3rd tunnel.So in this case, can confirm to set up three tunnels.
(13) all initiate the MIP register requirement to each tunnel.All initiate the MIP register requirement by the MIP Client Agent to each tunnel.Stipulate in the MIP agreement according to standard; In MIP RegistrationRequest, be made as 0 to life time (Lifetime); Perhaps directly send to HA to the PoA address of the MSS of needs binding through FA simultaneously; Thereby HA can discharge for the original source ASN-GW of this PoA and the tunnel of HA, sets up the target ASN-GW of this PoA address that is directed against MSS and the tunnel of HA simultaneously.
(14) after all tunnels in (13) all disposed, the MIP client was just ended the mobile management unit of result through R3 handoff response report Intra-ASN with session.This R3_Handover.Reply message all has corresponding result for each session id in R3_Session_Release.Request message) return Intra ASN mobile management unit, thus accomplished whole R3 handoff procedure.Need comprise information such as mobile subscriber station ID, session id, this session switching result in the session switching result information sets.
As shown in Figure 4, be the switching flow sketch map under the PMIP pattern, the related news content is done to be provided with like following table 1:
Table 1
Visible from Fig. 4, this process mainly may further comprise the steps:
11-12) before switching, MSS and CSN are through the air interface of MSS and BS, and the ASN internal tunnel between BS and the service ASN-GW passes through tunnel transmission/exchange session business datum that mobile IP protocol is set up between service ASN-GW and the HA.
13) because move at the MSS terminal or the needs of ASN network resource management, the mobile management unit of Intra-ASN has triggered the R3 handoff procedure
If the switching that triggers owing to the needs of ASN network resource management need have the mobile management unit of network resource management unit notice Intra-ASN to trigger the R3 handoff procedure so earlier.
The MIP Client Agent has comprised MSS sign, target ASN-GW and session, PoA address what the mobile management unit of receiving Intra-ASN sended over, just starts the heavy registration process of MIP after the R3_Handover.Request message of the session informations such as triple table of HA address.The ID storage update of session simultaneously is convenient to later session management in MIP Client Agent unit, and present embodiment hypothesis PoA address entries provides in handoff request message.
14-17) the contextual renewal process of MIP: the MIP Client Agent sends the MIP registration message and transmits heavy register requirement through the FA module in the middle of the target ASN-GW to HA; Require HA that the IP address of this MSS in the message is bound together with new ASN-GW: promptly to require to discharge tunnel for the corresponding HA ASN-GW in this MSS IP address to the source; Set up the tunnel of the corresponding HA in this MSS IP address simultaneously, thereby all IP datagrams relevant with the IP address of this MSS are just carried by new tunnel to target ASN-GW.
This process repeats repeatedly, and the heavy registration process up to all tunnels all is finished.
18) receive after all MIP registration reply messages, if all successes, the MIP Client Agent upgrades the R3 information of this MSS through the mobile management unit of R3_Handover.Reply message informing Intra-ASN; If all failures, the MIP Client Agent recovers the original state of MSS again through the mobile management unit of R3_Handover.Reply message informing Intra-ASN so.If the situation of part success/failure, then implementation part conversation shift.
Other alternative method in fact also can be arranged such as recovering the original state of MSS again, let all sessions still pass through original ASN-GW and the tunnel between the HA etc.
If 19-111) 18) all successful, as then can to set up the session inside in ASN on the tunnel of setting up about success carrying: set up the inner R6 tunnel of new ASN so that the datagram of MSS is passed through the session service data on the tunnel transmission upper strata BS and target ASN-GW and target ASN-GW and the HA from BS to target ASN-GW.Through setting up the R4 tunnel between the ASN-GW, simultaneously as switching the ephemeral data passage between the ASN-GW in the transient process.Deletion is to the source ASN-GW of this MSS and the R6 tunnel between the BS.For the tunnel of failure, can end the session relevant with this tunnel, perhaps recover the tunnel of original ASN-GW and HA.For the successful tunnel of part, can be according to whole successful method, the carrying of inside among the new ASN is set up in the session on the tunnel of setting up for success, or recovers the tunnel of original ASN-GW and HA.
Embodiment 2: the switching under the CMIP pattern.
In the MIP process, the client of MIP on MSS, thereby MSS or through FA or directly and foundation/releases of accomplishing all MIP between the HA wait the initiation of request and response message and reception to operate the IP tunnel between foundation/release ASN-GW and the HA.For this pattern, we are referred to as CMIP.Handoff procedure under the CMIP pattern may further comprise the steps:
(21) in the R3_Handover.Request message the inside of initiating to switch, need the session information of this MSS is sent to ASN-GW FA, service ASN-GW sends to the FA module on the target ASN-GW by the source.Above-mentioned session information can be provided with embodiment 1 equally.
(22) at ASN-GW FA according to session information, the tunnel number of confirm to need setting up.
(23) all initiate the MIP register requirement to each tunnel.
ASN-GW FA sends the FA advertisement information to MSS (MIP client) to each tunnel, and notice MSS (MIP client) initiates the MIP register requirement through FA to HA.
Target ASN-GW FA perhaps utilizes message/signaling BS and the MIP client of the air interface management message informing between the MSS on MSS on the R6 interface between BS and the ASN-GW to initiate the mobile IP registration process to the tunnel that needs to set up through the FA advertisement information.MIP registration message between MSS and the HA all is to transmit through ASN-GW FA, thereby for the MIP message to each tunnel, ASN-GW FA can both obtain the MIP registering result from the MIP registration reply message.
Stipulate in the MIP agreement according to standard; The PoA address of the MSS that in the MIP login request message, binds needs sends to HA through FA; Thereby HA can discharge for the original source ASN-GW of this PoA and the tunnel of HA, sets up the tunnel of target ASN-GW and the HA of PoA simultaneously.
(24) after all tunnels in (23) all dispose, all can send the FA advertisement information by ASN-GW FA to each tunnel, notice MSS (MIP client) initiates the MIP register requirement.ASN-GW FA ends the result with session and returns original service ASN-GW FA through the R3 handoff response, thereby has accomplished whole R3 handoff procedure.Need comprise information such as mobile subscriber station ID, session id, this session switching result in the session switching result information sets.
As shown in Figure 5, be the switching flow sketch map under the CMIP pattern, related news are done to be provided with like following table 2:
Table 2
Visible from Fig. 5, this process mainly may further comprise the steps:
21-22) before switching, MSS and CSN are through the air interface of MSS and BS, and the ASN internal tunnel between BS and the service ASN-GW passes through tunnel transmission/exchange session business datum that mobile IP protocol is set up between service ASN-GW and the HA.
23) ASN-GW of source service triggers the R3 switching, and will comprise MSS sign, target ASN-GW and session, PoA address, and the R3_Handover.Request message of the session informations such as triple table of HA address sends to target ASN-GW.Present embodiment hypothesis PoA address entries provides in handoff request message.
24) receive switch message after, the MIP FA module among the target ASN-GW is with FA advertisement information notice MSS, variation has taken place in the FA that tells MSS to adhere to, and requires the MIP client's section among the MSS to initiate the heavy register requirement of MIP, rebulids the R3 tunnel of HA to target FA.(this process repeats repeatedly, has all carried out up to the heavy registration process in all tunnels)
25-26) the MIP client is sent the MIP login request message and is transmitted heavy register requirement through the FA module among the target ASN-GW to HA; Require HA that the IP address of this MSS in the message is bound together with new ASN-GW: promptly to require to discharge tunnel for the corresponding HA ASN-GW in this MSS IP address to the source; Set up the tunnel of the corresponding HA in this MSS IP address simultaneously, thereby all IP datagrams relevant with the IP address of this MSS are just carried by new tunnel to target ASN-GW.
When 27) the FA module in the middle of target ASN-GW is received the MIP register response and is transmitted to MSS; FA module in the middle of the target ASN-GW obtains the result of this register requirement; And judge whether that all tunnel registration reply messages receive, if all receive then according to the mobile management unit of the result in the registration reply message (registration failure or success) through R3_Handover.Reply message informing Intra-ASN.If the R3 information of this MSS is upgraded in all successes, MIP Client Agent through the original service ASN-GW FA of R3_Handover.Reply message informing I; If all failures, the MIP Client Agent recovers the original state of MSS again through the original service ASN-GW FA of R3_Handover.Reply message informing so.If the situation of part success/failure; Then the implementation part conversation shift (in fact also can be by other alternative method: end the session of failure; Perhaps recover the original state of MSS again, let all sessions still pass through original ASN-GW and the tunnel between the HA)
If 28-210) 27) all successful, as then can to set up the session inside in ASN on the tunnel of setting up about success carrying: set up the inner R6 tunnel of new ASN so that the datagram of MSS is passed through the session service data on the tunnel transmission upper strata BS and target ASN-GW and target ASN-GW and the HA from BS to target ASN-GW.Through setting up the R4 tunnel between the ASN-GW, simultaneously as switching the ephemeral data passage between the ASN-GW in the transient process.Deletion is to the source ASN-GW of this MSS and the R6 tunnel between the BS.For the tunnel of failure, can end the session relevant with this tunnel, perhaps recover the tunnel of original ASN-GW and HA.For the successful tunnel of part, can be according to whole successful method, the carrying of inside among the new ASN is set up in the session on the tunnel of setting up for success, or recovers the tunnel of original ASN-GW and HA.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1. support the changing method under many sessions in a Radio Access Network, it is characterized in that, comprising:
A, the inner mobile management unit of access service network send handoff request message to the mobile IP customer terminal proxy module, carry the session information group in the described handoff request message;
B, mobile IP customer terminal proxy module need to confirm the tunnel of foundation according to described session information group;
C, initiate mobile IP registration to the tunnel of need setting up;
Whether D, judgement have all initiated mobile IP registration to the tunnel that needs to set up, if get into step e, if do not return step C;
E, mobile IP customer terminal proxy module return switching result information to the inner mobile management unit of said access service network.
2. the method for claim 1 is characterized in that, before said steps A, also comprises step: network resource management unit notice access service network content mobile management unit triggers and switches.
3. the method for claim 1 is characterized in that, said session information group comprises one of following information or combination:
Target access service network gateway, session id, attachment point address, home agent HA address and mobile subscriber station ID.
4. method as claimed in claim 3 is characterized in that, said mobile IP registration is by said mobile IP customer terminal agency described attachment point address and destination service access service network gateway to be bound.
5. the method for claim 1 is characterized in that, in said step C, if there is the tunnel that needs to set up to initiate the mobile IP registration failure, then keeps former tunnel to connect.
6. the method for claim 1 is characterized in that, said switching result information comprises session switching result information sets, comprises mobile subscriber station ID, session id and this session switching result in the described session switching result information sets.
7. support the changing method under many sessions in a Radio Access Network, it is characterized in that, comprising:
A, source service access service network gateway send handoff request message to external agent's module of destination service access service network gateway, carry the session information group in the described handoff request message;
External agent's module of b, destination service access service network gateway need to confirm the tunnel of foundation according to described session information group;
C, destination service access service network gateway are initiated mobile IP registration to the tunnel that needs to set up;
D, destination service access service network gateway judge to the tunnel that needs to set up whether all initiated mobile IP registration, if get into step e, if do not return step c;
External agent's module of e, destination service access service network gateway is returned switching result information to source service access service network gateway.
8. method as claimed in claim 7, said session information group comprises one of following information or combination:
Target access service network gateway, session id, attachment point address, home agent HA address and mobile subscriber station ID.
9. method as claimed in claim 7 is characterized in that, in said step b, this method also comprises step:
External agent's module of destination service access service network gateway is with described initiation mobile IP registration notice mobile subscriber station.
10. method as claimed in claim 7 is characterized in that, said step c further may further comprise the steps:
External agent's modules A SN-GW FA of destination service access service network gateway is to the tunnel that needs to set up, and the mobile IP customer terminal of notice on mobile subscriber station MSS initiated mobile IP registration.
11. method as claimed in claim 10 is characterized in that, the mobile IP customer terminal of said notice on mobile subscriber station MSS initiated mobile IP registration, comprising:
Through advertisement information or the message/signaling on the R6 interface between base station BS and the destination service access service network gateway and the air interface management message between BS and the MSS of said external agent's module, the mobile IP customer terminal of notice on MSS initiated mobile IP registration.
12. method as claimed in claim 7 is characterized in that, in said step c, the mobile IP registration failure is initiated in the tunnel of setting up if desired, then keeps former tunnel to connect.
13. method as claimed in claim 7 is characterized in that, said object information comprises: session switching result information sets comprises in the described session switching result information sets: mobile subscriber station ID, session id, this session switching result.
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| CN2005100828465A CN1897743B (en) | 2005-07-11 | 2005-07-11 | Method for supporting and switching multiple conversation in wireless access network |
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| CN2005100828465A CN1897743B (en) | 2005-07-11 | 2005-07-11 | Method for supporting and switching multiple conversation in wireless access network |
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| CN1897743A CN1897743A (en) | 2007-01-17 |
| CN1897743B true CN1897743B (en) | 2012-01-25 |
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| CN101360027B (en) * | 2007-07-30 | 2012-06-27 | 华为技术有限公司 | Method, apparatus and system for acquiring registering result and router migration |
| CN101127786B (en) * | 2007-09-25 | 2011-12-07 | 中兴通讯股份有限公司 | A method for allocating IP address upon multiple registration of mobile IP |
| CN101771978A (en) * | 2008-12-31 | 2010-07-07 | 华为终端有限公司 | Method, device and system for transferring multimedia session in access networks |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1182900A1 (en) * | 2000-08-07 | 2002-02-27 | Lucent Technologies Inc. | Handover of wireless calls between systems supporting circuit and packet call models |
| CN1630411A (en) * | 2003-12-15 | 2005-06-22 | 国际商业机器公司 | Voice-over IP mobile roaming using SIP refer |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1182900A1 (en) * | 2000-08-07 | 2002-02-27 | Lucent Technologies Inc. | Handover of wireless calls between systems supporting circuit and packet call models |
| CN1630411A (en) * | 2003-12-15 | 2005-06-22 | 国际商业机器公司 | Voice-over IP mobile roaming using SIP refer |
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