CN101360331A

CN101360331A - Service gateway information updating method, system and apparatus

Info

Publication number: CN101360331A
Application number: CNA2007101415558A
Authority: CN
Inventors: 李明; 郭小龙
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-08-02
Filing date: 2007-08-02
Publication date: 2009-02-04

Abstract

The invention discloses a message updating method of a service gateway; when a user device is switched from the former paging area to a new paging region, if the service gateway is switched, the connection between the new service gateway and a mobility control body of the former paging region is established; and the former service gateway message stored by the mobility control body of the former paging area is updated into the new service gateway message. The invention also discloses a service gateway message updating system, a service gateway and a mobility control body. Through establishing the connection of the new service gateway and the mobility control body of the former paging region, the invention realizes the switch between different wireless connection technologies at the time of S-GW changing with restricting signals; thereby improving the system disposal speed when the down-data and up-data reach.

Description

A kind of service gateway information updating method, system and device

Technical field

The present invention relates to wireless communication technology field, particularly relate to a kind of service gateway information updating method, system and device.

Background technology

Along with developing rapidly of wireless communication technology, UMTS (Universal MobileTelecommunication System, universal mobile telecommunications system) and LTE (Long Term Evolved, long-term evolving network)/SAE (System Architecture Evolved, System Architecture Evolution network) is widely used.As a multimode UE (User Equipment, subscriber equipment) at different RAT (RadioAccess Technology, when moving (as network and the evolvement network of 2G/3G) wireless access technology), if there is not certain mechanism, can cause frequent network registration process, bring a large amount of register command expenses.

General now employing limitation signaling solves frequent network registry problem.Utilize limitation signaling, the UEattach post-registration is registered to another access network again to a kind of access network (as 2G/3G network or evolvement network) after this UE moves to another access network.Therefore, this UE has been registered to two kinds of connecting systems simultaneously, when this UE when the corresponding registration area of these two networks moves, need not initiate any registration process.

Under limitation signaling, UE is attached to UMTS, changes access technology then to LTE, and when changing access technology to UMTS again, a kind of flow process of switching between different radio access technologies may further comprise the steps as shown in Figure 1:

Step s101-step s104, UE is initiated to the request of adhering to of UMTS, and SGSN (Serving GPRSSupport Node, Serving GPRS Support Node) is initiated to HSS (Home Subscriber Server, home subscriber server) registration process sends at last to adhere to and accepts message to UE.

Step s105, adhere to finish after, UE is accomplished to the activation PDP Context flow process of SGSN and MME (Mobility ManagementEntity, Mobility Management Entity)/UPE (User Plane Entity, user entity).

Step s106-step s112, UE enter LTE when zone, initiate Routing Area Update, and in this process, MME/UPE obtains contextual information about UE from SGSN.MME/UPE is accomplished to the registration of HSS, to finish Routing Area Update.

Step s113-step s115, UE enters the UMTS zone, initiates Routing Area Update, and in this process, SGSN obtains contextual information about UE from MME/UPE.SGSN is accomplished to the registration of HSS, to finish Routing Area Update.

Under limitation signaling, UE is attached to LTE, and when changing access technology to UMTS then, a kind of flow process of switching between different radio access technologies may further comprise the steps as shown in Figure 2:

Step s201-step s206, UE are initiated to the request of adhering to of LTE, and MME/UPE is initiated to the registration process of HSS, send at last to adhere to accept message to UE.

Step s207-step s213, UE enters the UMTS zone, initiates Routing Area Update, and in this process, SGSN obtains contextual information about UE from MME/UPE.SGSN is accomplished to the registration of HSS, to finish Routing Area Update.

In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: the flow process at limitation signaling (is registered to LTE earlier as the user, changes to UMTS then; The user is registered to LTE earlier, changes to UMTS then, changes to LTE again; The user is registered to LTE earlier, changes to UMTS again, carries out Routing Area Update then in UMTS; The user is registered to UMTS earlier, changes to LTE then; The user is registered to UMTS earlier, changes to LTE then, changes to UMTS again; The user is registered to UMTS earlier, changes to LTE again, carries out tracking area update then in LTE) in, if S-GW (Serving Gateway, gateway) changes, the switching between then can not the good support different radio access technologies.

Summary of the invention

The problem that the embodiment of the invention will solve provides a kind of service gateway information updating method, system and device, to be implemented under the limitation signaling switching when S-GW changes between different radio access technologies.

For achieving the above object, the technical scheme of the embodiment of the invention provides a kind of service gateway information updating method, when subscriber equipment switches to new paging zone by former paging zone, if gateway switches, then set up mobility controlled entity related of described new gateway and described former paging zone, the former service gateway information updating that the mobility controlled entity of described former paging zone is preserved is new gateway information.

The technical scheme of the embodiment of the invention also provides a kind of service gateway information updating system, the mobility controlled entity that comprises new gateway and former paging zone, when subscriber equipment switches to new paging zone by former paging zone, if gateway switches, then described new gateway is set up related with the mobility controlled entity of described former paging zone.

The technical scheme of the embodiment of the invention also provides a kind of gateway, comprises mobility controlled entity information acquisition unit and allocation units; Described mobility controlled entity information acquisition unit is used to obtain the mobility controlled entity information of former paging zone; Described allocation units are used for according to described mobility controlled entity information, are mobility controlled entity distribution chain of command and/or user's face of described former paging zone.

The technical scheme of the embodiment of the invention also provides a kind of mobility controlled entity, comprises gateway information management unit and mobility controlled entity information transmitting unit; Described gateway information management unit is used for setting up, upgrades or deletion gateway information; Described mobility controlled entity information transmitting unit is used for providing mobility controlled entity information to gateway.

An embodiment in the technique scheme has following advantage: the mobility controlled entity of the embodiment of the invention by setting up new gateway and former paging zone related, realized under limitation signaling, switching when S-GW changes between different radio access technologies, thus downlink data arrive and upstream data arrival in can accelerate the processing speed of system.

Description of drawings

Fig. 1 is a kind of flow chart that switches between different radio access technologies of prior art;

Fig. 2 is the flow chart that the another kind of prior art switches between different radio access technologies;

Fig. 3 is the flow chart that switches between different radio access technologies of the embodiment of the invention one;

Fig. 4 is the flow chart that switches between different radio access technologies of the embodiment of the invention two;

Fig. 5 is the flow chart that switches between different radio access technologies of the embodiment of the invention three;

Fig. 6 is the flow chart that switches between different radio access technologies of the embodiment of the invention four;

Fig. 7 is the flow chart that switches between different radio access technologies of the embodiment of the invention five;

Fig. 8 is the flow chart that switches between different radio access technologies of the embodiment of the invention six;

Fig. 9 is the flow chart that switches between different radio access technologies of the embodiment of the invention seven;

Figure 10 is the flow chart that switches between different radio access technologies of the embodiment of the invention eight;

Figure 11 is the flow chart that switches between different radio access technologies of the embodiment of the invention nine;

Figure 12 is the flow chart that switches between different radio access technologies of the embodiment of the invention ten;

Figure 13 is the flow chart that switches between different radio access technologies of the embodiment of the invention 11;

Figure 14 is the flow chart that switches between different radio access technologies of the embodiment of the invention 12;

Figure 15 is the flow chart that switches between different radio access technologies of the embodiment of the invention 13;

Figure 16 is the flow chart that switches between different radio access technologies of the embodiment of the invention 14;

Figure 17 is the flow chart that switches between different radio access technologies of the embodiment of the invention 15;

Figure 18 is the flow chart that switches between different radio access technologies of the embodiment of the invention 16;

Figure 19 is the flow chart that switches between different radio access technologies of the embodiment of the invention 17;

Figure 20 is the flow chart that switches between different radio access technologies of the embodiment of the invention 18;

Figure 21 is the flow chart that switches between different radio access technologies of the embodiment of the invention 19;

Figure 22 is the flow chart that switches between different radio access technologies of the embodiment of the invention 20;

Figure 23 is the flow chart that switches between different radio access technologies of the embodiment of the invention 21;

Figure 24 is the flow chart that switches between different radio access technologies of the embodiment of the invention 22;

Figure 25 is the flow chart that switches between different radio access technologies of the embodiment of the invention 23;

Figure 26 is the flow chart that switches between different radio access technologies of the embodiment of the invention 24;

Figure 27 is the flow chart that switches between different radio access technologies of the embodiment of the invention 25;

Figure 28 is the flow chart that switches between different radio access technologies of the embodiment of the invention 26;

Figure 29 is the flow chart that switches between different radio access technologies of the embodiment of the invention 27;

Figure 30 is the flow chart that switches between different radio access technologies of the embodiment of the invention 28;

Figure 31 is the flow chart that switches between different radio access technologies of the embodiment of the invention 29;

Figure 32 is the flow chart that switches between different radio access technologies of the embodiment of the invention 30;

Figure 33 is the flow chart that switches between different radio access technologies of the embodiment of the invention 31;

Figure 34 is the flow chart that switches between different radio access technologies of the embodiment of the invention 32;

Figure 35 is the flow chart that switches between different radio access technologies of the embodiment of the invention 33;

Figure 36 is the flow chart that switches between different radio access technologies of the embodiment of the invention 34;

Figure 37 is the flow chart that switches between different radio access technologies of the embodiment of the invention 35;

Figure 38 is the flow chart that switches between different radio access technologies of the embodiment of the invention 36;

Figure 39 is the flow chart that switches between different radio access technologies of the embodiment of the invention 37;

Figure 40 is the flow chart that switches between different radio access technologies of the embodiment of the invention 38;

Figure 41 is the flow chart that switches between different radio access technologies of the embodiment of the invention 39;

Figure 42 is the flow chart that switches between different radio access technologies of the embodiment of the invention 40;

Figure 43 is the flow chart that switches between different radio access technologies of the embodiment of the invention 41;

Figure 44 is the flow chart that switches between different radio access technologies of the embodiment of the invention 42;

Figure 45 is the structural representation that upgrades indication of following of the embodiment of the invention;

Figure 46 is a kind of service gateway information updating system construction drawing of the embodiment of the invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:

When subscriber equipment switches to new paging zone by former paging zone, if gateway switches, the embodiment of the invention is then set up mobility controlled entity related of described new gateway and described former paging zone, and the former service gateway information updating that the mobility controlled entity of described former paging zone is preserved is new gateway information; Wherein, this paging zone is the route district in UMTS, is tracking area in evolvement network, and this mobility controlled entity is SGSN in UMTS, is MME in evolvement network.For following the carrying in the renewal to set up, the embodiment of the invention can adopt the method for building up of demonstration and the method for building up of implicit expression.The method for building up that shows is to use new information to set up carrying; The method for building up of implicit expression is to use existing message, sets up carrying by spreading parameter.

If the carrying that shows is set up, then can trigger by new gateway, also can trigger by the mobility controlled entity of former paging zone; Can directly trigger by new gateway/MME/SGSN, also can trigger indirectly by MME/SGSN.

If the carrying of implicit expression is set up, need other following to upgrade the foundation that indication triggers carrying, if the carrying that shows is set up, then do not need other indication.

Novel entities is MME if follow more, then needs to set up the chain of command between MME and the new gateway, and the former gateway that is about to chain of command among the MME is updated to new gateway, is established to the chain of command of MME in new gateway.If following more, novel entities is SGSN, then need to set up chain of command and user's face between SGSN and the new gateway, soon the former gateway of chain of command and user's face is updated to new gateway among the SGSN, is established to chain of command and the user's face of SGSN in new gateway.

For the deleting load-bearing of following in the renewal, then need according to different scenes, according to different carrying establishing methods, different deleting load-bearing modes is arranged.

Embodiment one, and a kind of update method flow process is used for the user and is registered to LTE earlier as shown in Figure 3, changes to UMTS then, and the carrying of implicit expression is set up, and message sequence changes.Present embodiment may further comprise the steps:

Step s301, the user initiates Routing Area Update.

Step s302, SGSN is to MME request user's contextual information.

Step s303, MME returns contextual information to SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former Serving Gateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s304 optionally authenticates the user.

If step s305 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the SGSN.

Step s306, the SGSN basis bearer context information that MME receives from step s303 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s306a message sends to new Serving Gateway with control plane address and the chain of command TEID that receives from MME among the step s303, and new Serving Gateway is established to the context of MME, and writes down the information of receiving.After new ServingGateway receives s306c message, optionally, it is sent to SGSN for newly assigned control plane address of MME and chain of command TEID by s306d message.

Step s307, the chain of command relevant information of the new Serving Gateway that SGSN will receive from s306d (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) is issued MME.If what MME sent in step s303 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new ServingGateway; If what MME sent among the step s303 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Simultaneously, SGSN sends to follow to MME and upgrades indication Following Update Indicator.

Step s308, MME receive to follow and upgrade indication Following Update Indicator, if MME sends in step s303 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s303 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s309-s312, SGSN initiate the position to HLR (Home Location Register, attaching position register) and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.

Step s313, SGSN sends the routing update response to the user.

Step s314 if the user has received new S-TMSI (Temporary Mobile SubscriberIdentity, Temporary Mobile Subscriber Identity), then sends response message to network.

Present embodiment is by setting up the related of new Serving Gateway and MME, realized under limitation signaling, switching when Serving Gateway changes between different radio access technologies, thus downlink data arrive and upstream data arrival in can accelerate the processing speed of system.

Embodiment two, and a kind of update method flow process is used for the user and is registered to LTE earlier as shown in Figure 4, changes to UMTS then, and the carrying of implicit expression is set up, and message sequence is constant.The difference of present embodiment and embodiment one is, in step s405, send Context Acknowledge message, the chain of command relevant information of new Serving Gateway does not send to MME by Context Acknowledge message, but sends to MME's by the update inquiry information Following Update Request that follows among the step s408a.Wherein the message among the step s408b also can send after step s408d.

Embodiment three, and a kind of update method flow process is used for the user and is registered to LTE earlier as shown in Figure 5, changes to UMTS then, show carrying foundation, and triggered indirectly by MME the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s501, the user initiates Routing Area Update.

Step s502, SGSN is to MME request user's contextual information.

Step s503, MME returns contextual information to SGSN.

Step s504 optionally authenticates the user.

Step s505, SGSN returns acknowledge message to MME.

If step s506 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the SGSN.

Step s507, the SGSN basis bearer context information that MME receives from step s503 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s507a message is carried to follow and is upgraded indication Following Update Indicator.New Serving Gateway upgrades indication Following Update Indicator according to following of receiving, after receiving s507c message, optionally, for MME distributes new control plane address and chain of command TEID and sends to SGSN by s507d message.

Step s508a, SGSN send to MME and follow update request, wherein carry from system face address that new ServingGateway receives and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes).

Step s508b, MME is according to control plane address and the chain of command TEID of the new Serving Gateway that receives from s508a message, be the new newly-built new context of Serving Gateway, preserve the above-mentioned information of receiving, distribute new control plane address and optional chain of command TEID, send carrying foundation request to new ServingGateway then, wherein carrying is new newly assigned control plane address of Serving Gateway and chain of command TEID.Perhaps, MME is updated to the relevant information of new Serving Gateway with the relevant information of the Serving Gateway in the former context, and will send to new Serving Gateway for control plane address and the chain of command TEID that former Serving Gateway distributes.New Serving Gateway receives after the carrying foundation request of MME transmission, is the newly-built context of MME, preserves the chain of command information of receiving from MME, returns carrying to MME then and sets up response message.

Step s508c, MME receive that carrying sets up response message, if MME sends in step s508b is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent in step s508b is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s508d, MME send to SGSN and follow the renewal response message.

Step s509-step s512, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.

Step s513, SGSN sends the routing update response to the user.

Step s514 if the user has received new S-TMSI, then sends response message to network.

Embodiment four, and a kind of update method flow process is used for the user and is registered to LTE earlier as shown in Figure 6, changes to UMTS then, show carrying foundation, and directly triggered by new ServingGateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s601, the user initiates Routing Area Update.

Step s602, SGSN is to MME request user's contextual information.

Step s603, MME returns contextual information to SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former Serving Gateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s604 optionally authenticates the user.

Step s605, SGSN returns acknowledge message to MME.

If step s606 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the SGSN.

Step s607, the SGSN basis bearer context information that MME receives from step s603 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s607a message sends to new Serving Gateway with control plane address and the chain of command TEID that receives from MME among the step s603, and new Serving Gateway is established to the context of MME, writes down the above-mentioned information of receiving, optionally, distribute new control plane address and chain of command TEID for MME.And, carry in the s607a message to follow and upgrade indication Following Update Indicator.

Step s608a, new Serving Gateway is according to the chain of command information of receiving from s607a message of upgrading indication Following Update Indicator and MME of following of carrying, send carrying to MME and set up request message, its control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) are sent to MME.S608a message can send after s607a.

Step s608b, if MME sends in step s603 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what MME sent among the step s603 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Then, MME returns carrying to new Serving Gateway and sets up response message.Step s608b also can be after step s608d.

Step s608c, if MME sends in step s603 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s603 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.

Step s608d, former Serving Gateway send response message to MME after deleting its local context.

Step s609-step s612, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.

Step s613, SGSN sends the routing update response to the user.

Step s614 if the user has received new S-TMSI, then sends response message to network.

Embodiment five, and a kind of update method flow process is used for the user and is registered to LTE earlier as shown in Figure 7, change to UMTS then, show carrying foundation, the opportunity of setting up is before Update Location, triggered indirectly by new ServingGateway, present embodiment may further comprise the steps:

Step s701, the user initiates Routing Area Update.

Step s702, SGSN is to MME request user's contextual information.

Step s703, MME returns contextual information to SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former Serving Gateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s704 optionally authenticates the user.

Step s705, SGSN returns acknowledge message to MME.

If step s706 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the SGSN.

Step s707, the SGSN basis bearer context information that MME receives from step s703 is established to the carrying on new Serving Gateway and the PDN Gateway.

Step s708a, SGSN sends to new Serving Gateway and follows update request, the control plane address and the chain of command TEID that receive from MME among the step s703 are sent to new Serving Gateway, new Serving Gateway is established to the context of MME, write down the above-mentioned information of receiving, optionally, distribute new control plane address and chain of command TEID for MME.

Step s708b, new Serving Gateway is according to the chain of command information of the MME that receives from s708a message, send carrying to MME and set up request message, with control plane address and chain of command TEID (ServingGateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) transmission MME.

Step s708c, if MME sends in step s703 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what MME sent among the step s703 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Then, MME returns carrying to new Serving Gateway and sets up response message.S708c also can be after s708f.

Step s708d, receive s708c after, new Serving Gateway returns to SGSN and follows the renewal response message.

Step s708e, if MME sends in step s703 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s703 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.

Step s708f, former Serving Gateway send response message to MME after deleting its local context.

Step s709-step s712, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.

Step s713, SGSN sends the routing update response to the user.

Step s714 if the user has received new S-TMSI, then sends response message to network.

Embodiment six, a kind of update method flow process as shown in Figure 8, be used for the user and be registered to LTE earlier, change to UMTS then, show carrying foundation, the opportunity of setting up is after Update Location, trigger indirectly by MME, this flow process is similar with the flow process of embodiment three, and difference is, indication is followed and upgraded related news (step s811) and occur in (step s810) after the Update Location process in the present embodiment.

Embodiment seven, a kind of update method flow process as shown in Figure 9, be used for the user and be registered to LTE earlier, change to UMTS then, show carrying foundation, the opportunity of setting up is after Update Location, trigger indirectly by new ServingGateway, this flow process is similar with the flow process of embodiment five, and difference is, indication is followed and upgraded related news (step s912) and occur in (step s911) after the Update Location process in the present embodiment.

Embodiment eight.A kind of update method flow process is used for the user and is registered to UMTS earlier as shown in figure 10, changes to LTE then, and then changes to UMTS, and the carrying of implicit expression is set up, and message sequence changes.Present embodiment may further comprise the steps:

Step s1001, the user initiates Routing Area Update.

Step s1002, SGSN is to MME request user's contextual information.

Step s1003, MME returns contextual information to SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former Serving Gateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s1004 optionally authenticates the user.

Step s1005, the SGSN basis bearer context information that MME receives from step s1003 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s1005a message sends to new Serving Gateway with control plane address and the chain of command TEID that receives from MME among the step s1003, and new Serving Gateway is established to the context of MME, and writes down the above-mentioned information of receiving.After new ServingGateway receives s1005c message, optionally, it is sent to SGSN for newly assigned control plane address of MME and chain of command TEID by s1005d message.

Step s1006, the chain of command relevant information of the new Serving Gateway that SGSN will receive from s1006d (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) is issued MME.If what MME sent in step s1003 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what MME sent among the step s1003 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Simultaneously, SGSN sends to follow to MME and upgrades indication Following Update Indicator.

Step s1007, MME receive to follow and upgrade indication Following Update Indicator, if MME sends in step s1003 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s1003 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former ServingGateway sends response message to MME after deleting its local context.

Step s1008a, MME sends gateway change request to former SGSN, wherein carries ServingGateway Change sign.

Step s1008b, former SGSN deletes the association of MME, sends gateway change response to MME.

Step s1008c, MME delete the association of former SGSN, send the gateway change to new SGSN and confirm.

Step s1009-step s1012, SGSN initiate the position to HLR and upgrade.HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives Serving Gateway Change sign at s1008a, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not step s1007, former SGSN receives Serving Gateway Change sign at s1008a, can delete this all users context (comprising context relevant and the context relevant) by the former Serving Gateway of indication, and indicate former Serving Gateway not to be initiated to the deleting load-bearing process of PDN Gateway with MME with former SGSN.

Step s1013, SGSN sends the routing update response to the user.

Step s1014 if the user has received new S-TMSI, then sends response message to network.

In the present embodiment, step s108a, step s108b can also be placed between step s1002 and the step s1003, remove step s108c.

Embodiment nine, and a kind of update method flow process is used for the user and is registered to UMTS earlier as shown in figure 11, change to LTE then, and then change to UMTS, and the carrying of implicit expression is set up, and message sequence is constant.The difference of present embodiment and embodiment eight is, in step s1105, send Context Acknowledge message, the chain of command relevant information of new Serving Gateway does not send to MME by Context Acknowledge message, but sends to MME's by the update inquiry information Following UpdateRequest that follows among the step s1107a.Wherein the message among the step s1107b also can send after step s1107d.In addition, gateway changes request message after s1107a message, and does not have gateway to change acknowledge message, the substitute is and follows the renewal response message.

In the present embodiment, step s117a-2, step s117a-3 can also be placed between step s1102 and the step s1103, step s117b is placed on after the step s117d.

Embodiment ten, and a kind of update method flow process is used for the user and is registered to UMTS earlier as shown in figure 12, change to LTE then, and then change to UMTS, show carrying foundation, and triggered indirectly by MME the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s1201, the user initiates Routing Area Update.

Step s1202, SGSN is to MME request user's contextual information.

Step s1203, MME returns contextual information to SGSN.

Step s1204 optionally authenticates the user.

Step s1205, SGSN returns acknowledge message to MME.

Step s1206, the SGSN basis bearer context information that MME receives from step s1203 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s1206a message is carried to follow and is upgraded indication Following Update Indicator.New Serving Gateway upgrades indication Following Update Indicator according to following of receiving, after receiving s1206c message, optionally, for MME distributes new control plane address and chain of command TEID and sends to SGSN by s1206d message.

Step s1207a, SGSN send to MME and follow update request, wherein carry from system face address that new ServingGateway receives and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes).

Step s1207a-2, MME sends gateway change request to former SGSN, wherein carries ServingGateway Change sign.

Step s1207a-3, former SGSN deletes the association of MME, sends gateway change response to MME.

Step s1207b, MME is according to control plane address and the chain of command TEID of the new Serving Gateway that receives from s1207a message, be the new newly-built new context of Serving Gateway, preserve the above-mentioned information of receiving, distribute new control plane address and chain of command TEID, send carrying foundation request to new Serving Gateway then, wherein carrying is new newly assigned control plane address of Serving Gateway and chain of command TEID.Perhaps, MME is updated to the relevant information of new Serving Gateway with the relevant information of the Serving Gateway in the former context, and will send to new Serving Gateway for control plane address and the chain of command TEID that former Serving Gateway distributes.New Serving Gateway receives after the carrying foundation request of MME transmission, is the newly-built context of MME, preserves the chain of command information of receiving from MME, returns carrying to MME then and sets up response message.

Step s1207c, MME receive that carrying sets up response message, if MME sends in step s1207b is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s1207b is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s1207d, MME send to SGSN and follow the renewal response message.

Step s1209-step s1212, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives ServingGateway Change sign at s1207a-2, can delete the context relevant by the former Serving Gateway of indication, and indicate former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway with former SGSN.Another method is, remove s1207c step message, former SGSN receives ServingGateway Change sign at s1207a-2, can delete this all users context (comprising context relevant and the context relevant) by the former Serving Gateway of indication, and indicate former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway with MME with former SGSN.

Step s1213, SGSN sends the routing update response to the user.

Step s1214 if the user has received new S-TMSI, then sends response message to network.

In the present embodiment, step s127a-2, step s127a-3 can also be placed between step s1202 and the step s1203.

Embodiment 11, and a kind of update method flow process is used for the user and is registered to UMTS earlier as shown in figure 13, change to LTE then, and then change to UMTS, show carrying foundation, and directly triggered by new Serving Gateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s1301, the user initiates Routing Area Update.

Step s1302, SGSN is to MME request user's contextual information.

Step s1303, MME returns contextual information to SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former Serving Gateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s1304 optionally authenticates the user.

Step s1305, SGSN returns acknowledge message to MME.

Step s1306, SGSN are according among the step s1303, and the bearer context information that MME receives is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, step s1306a message sends to new ServingGateway with control plane address and the chain of command TEID that receives from MME among the step s1303, new Serving Gateway is established to the context of MME, write down the above-mentioned information of receiving, optionally, distribute new control plane address and chain of command TEID for MME.And, carry in the step s1306a message to follow and upgrade indication Following Update Indicator.

Step s1307a, new Serving Gateway carries the chain of command information of upgrading indication Following Update Indicator and MME of following according to what step s1306a message was received, send carrying to MME and set up request message, its control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) are sent to MME.Step s1307a message can send after step s1306a.

Step s1307b, if MME sends in step s1303 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what MME sent among the step s1303 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Then, MME returns carrying to new Serving Gateway and sets up response message.S1307b also can be after s1307d.

Step s1307c, if MME sends among the step s1303 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s1303 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s1307d, former Serving Gateway send response message to MME after deleting its local context.

Step s1308a, MME sends gateway change request to former SGSN, wherein carries ServingGateway Change sign.

Step s1308b, former SGSN deletes the association of MME, sends gateway change response to MME.

Step s1308c, MME delete the association of former SGSN, send the gateway change to new SGSN and confirm.

Step s1309-step s1312, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives ServingGateway Change sign at step s1308a, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s1307c/d step message, former SGSN receives ServingGateway Change sign at s1308a, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former SGSN and the context relevant with MME), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s1313, SGSN sends the routing update response to the user.

Step s1314 if the user has received new S-TMSI, then sends response message to network.

In the present embodiment, step s1308a, step s1308b can also be placed between step s1302 and the step s1303, remove step s1308c.

Embodiment 12, a kind of update method flow process as shown in figure 14, the user is registered to UMTS earlier, changes to LTE then, and then changes to UMTS, shows that carrying sets up, triggered indirectly by new Serving Gateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s1401, the user initiates Routing Area Update.

Step s1402, SGSN is to MME request user's contextual information.

Step s1403, MME returns contextual information to SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former Serving Gateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s1404 optionally authenticates the user.

Step s1405, SGSN returns acknowledge message to MME.

Step s1406, the bearer context information that SGSN receives according to MME among the step s1403 is established to the carrying on new Serving Gateway and the PDN Gateway.

Step s1407a, SGSN sends to new Serving Gateway and follows update request, the control plane address and the chain of command TEID that receive from MME among the step s1403 are sent to new Serving Gateway, new Serving Gateway is established to the context of MME, write down the above-mentioned information of receiving, optionally, distribute new control plane address and chain of command TEID for MME.

Step s1407b, the chain of command information of the MME that new Serving Gateway receives according to message among the step s1407a, send carrying to MME and set up request message, with control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) transmission MME.

Step s1407b-2, MME sends gateway change request to former SGSN, wherein carries ServingGateway Change sign.

Step s1407b-3, former SGSN deletes the association of MME, sends gateway change response to MME.

Step s1407c, if MME sends in step s1403a is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what step s1403a MME sent is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Then, MME returns carrying to new Serving Gateway and sets up response message.Step s1407c also can be after step s1407f.

Step s1407d, receive step s1407c after, new Serving Gateway returns to SGSN and follows the renewal response message.

Step s1407e, if what send at step s1403MME is the chain of command information of former Serving Gateway, then MME does not delete local context; If what step s1403 MME sent is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former ServingGateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s1407f, former Serving Gateway send response message to MME after deleting its local context.

Step s1408-step s1411, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives ServingGateway Change sign at step s1407b-2, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s1407e/f step message, former SGSN receives ServingGateway Change sign at step s1407b-2, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former SGSN and the context relevant with MME), and indicates former ServingGateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s1412, SGSN sends the routing update response to the user.

Step s1413 if the user has received new S-TMSI, then sends response message to network.

In the present embodiment, step s1407a-2, step s1407a-3 can also be placed between step s1402 and the step s1403.

Embodiment 13, a kind of update method flow process as shown in figure 15, the user is registered to UMTS earlier, changes to LTE then, and then changes to UMTS, shows that carrying sets up, triggered indirectly by MME the opportunity of setting up after Update Location.The flow process of present embodiment is similar with the flow process of embodiment ten, and indication follows the renewal related news to occur in after the Update Location process, and Gateway Change message is between step s1502, step s1503.

Embodiment 14, a kind of update method flow process as shown in figure 16, the user is registered to UMTS earlier, changes to LTE then, and then changes to UMTS, shows that carrying sets up, triggered indirectly by new Serving Gateway the opportunity of setting up after Update Location.The flow process of present embodiment is similar with the flow process of embodiment 12, and indication follows the renewal related news to occur in after the Update Location process, and GatewayChange message is between step s1602, step s1603.

Embodiment 15, a kind of update method flow process as shown in figure 17, the user is registered to LTE earlier, changes to UMTS then, carries out Routing Area Update then in UMTS, implicit expression carrying is set up, message sequence changes.Present embodiment may further comprise the steps:

Step s1701, the user initiates Routing Area Update.

Step s1702, new SGSN is by the contextual information of former SGSN to MME request user.

Step s1703, MME returns contextual information by former SGSN to new SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former ServingGateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s1704 optionally authenticates the user.

Step s1705, the bearer context information that new SGSN receives according to MME among the step s1703 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, step s1705a message sends to new ServingGateway with step s1703 from control plane address and the chain of command TEID that MME receives, new Serving Gateway is established to the context of MME, and writes down the above-mentioned information of receiving.After new Serving Gateway receives step s1705c message, optionally, it is sent to SGSN for newly assigned control plane address of MME and chain of command TEID by step s1705d message.

Step s1706, the chain of command relevant information of the new Serving Gateway that new SGSN will receive from step s1706d (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) is issued MME by former SGSN.If what MME sent in step s1703 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what MME sent among the step s1703 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Simultaneously, new SGSN sends to follow to MME by former SGSN and upgrades indication Following UpdateIndicator, and new SGSN sends Serving Gateway Change indication to former SGSN.

Step s1707, MME receive to follow and upgrade indication Following Update Indicator, if MME sends among the step s1703 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s1703 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s1708-step s1711, SGSN initiate the position to HLR and upgrade.HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives Serving Gateway Change sign at step s1706, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not step s1707, former SGSN receives Serving Gateway Change sign at step s1706, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former SGSN and the context relevant with MME), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s1712, SGSN sends the routing update response to the user.

Step s1713 if the user has received new S-TMSI, then sends response message to network.

Embodiment 16, a kind of update method flow process as shown in figure 18, the difference of present embodiment and embodiment 15 is, Context Acknowledge message is also after step s1804, the chain of command relevant information of new Serving Gateway does not send to MME by Context Acknowledge message, but by following update inquiry information to send to MME's.Wherein s1807b message also can send after s1807d.

Embodiment 17, a kind of update method flow process as shown in figure 19, the user is registered to LTE earlier, changes to UMTS then, carries out Routing Area Update then in UMTS, shows that carrying sets up, triggered indirectly by MME the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s1901, the user initiates Routing Area Update.

Step s1902, new SGSN is to former SGSN request user's contextual information.

Step s1903, former SGSN returns contextual information to new SGSN.Wherein carry the chain of command relevant information of MME.

Step s1904 optionally authenticates the user.

Step s1905, new SGSN returns acknowledge message to former SGSN.Wherein carry Serving GatewayChange sign.

Step s1906, the bearer context information that new SGSN receives according to step s1903 Central Plains SGSN is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s1906a message is carried to follow and is upgraded indication Following Update Indicator.New Serving Gateway upgrades indication Following Update Indicator according to following of receiving, after receiving s1906c message, optionally, for MME distributes new control plane address and chain of command TEID and sends to SGSN by s1906d message.

Step s1907a, new SGSN is according to the chain of command relevant information of the MME that receives among the step s1903, send to MME and to follow update request, wherein carry from system face address that new Serving Gateway receives and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes).

Step s1907b, MME is according to control plane address and the chain of command TEID of the new Serving Gateway that receives in the s1907a message, be the new newly-built new context of Serving Gateway, preserve the above-mentioned information of receiving, distribute new control plane address and chain of command TEID, send carrying foundation request to new Serving Gateway then, wherein carrying is new newly assigned control plane address of Serving Gateway and chain of command TEID.Perhaps, MME is updated to the relevant information of new Serving Gateway with the relevant information of the Serving Gateway in the former context, and will send to new Serving Gateway for control plane address and the chain of command TEID that former Serving Gateway distributes.New Serving Gateway receives after the carrying foundation request of MME transmission, is the newly-built context of MME, preserves the chain of command information of receiving from MME, returns carrying to MME then and sets up response message.

Step s1907c, MME receive that carrying sets up response message, if MME sends in step s1907b is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s1907b is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former ServingGateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s1907d, MME send to SGSN and follow the renewal response message.

Step s1908-step s1911, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives Serving GatewayChange sign at s1905, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s1907c step message, former SGSN receives Serving Gateway Change sign at s1905, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former SGSN and the context relevant with MME), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s1912, SGSN sends the routing update response to the user.

Step s1913 if the user has received new S-TMSI, then sends response message to network.

Embodiment 18, a kind of update method flow process as shown in figure 20, the user is registered to LTE earlier, change to UMTS then, in UMTS, carry out Routing Area Update then, show carrying foundation, directly triggered by new Serving Gateway the opportunity of setting up before UpdateLocation.Present embodiment may further comprise the steps:

Step s2001, the user initiates Routing Area Update.

Step s2002, new SGSN is to the contextual information of asking the user by former SGSN to MME.

Step s2003, MME returns contextual information by former SGSN to new SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former ServingGateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s2004 optionally authenticates the user.

Step s2005, new SGSN returns acknowledge message by former SGSN to MME.Wherein, new SGSN sends Serving Gateway Change sign to former SGSN.

Step s2006, the bearer context information that new SGSN receives according to step s2003 Central Plains SGSN is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s2006a message sends to new Serving Gateway with control plane address and the chain of command TEID that receives from MME among the step s2003, new Serving Gateway is established to the context of MME, write down the above-mentioned information of receiving, optionally, distribute new control plane address and chain of command TEID for MME.And, carry in the s2006a message to follow and upgrade indication Following Update Indicator.

Step s2007a, new Serving Gateway is according to the chain of command information of receiving from s2006a message of upgrading indication Following Update Indicator and MME of following of carrying, send carrying to MME and set up request message, its control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) are sent to MME.S2007a message can send after s2006a.

Step s2007b, if MME sends in step s2003 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new ServingGateway; If what MME sent among the step s2003 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Then, MME returns carrying to new ServingGateway and sets up response message.S2007b also can be after s2007d.

Step s2007c, if MME sends in step s2003 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent among the step s2003 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former ServingGateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s2007d, former Serving Gateway send response message to MME after deleting its local context.

Step s2008-step s2011, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives Serving GatewayChange sign at s2005, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s2007c/d step message, former SGSN receives Serving Gateway Change sign at s2005, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former SGSN and the context relevant with MME), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s2012, SGSN sends the routing update response to the user.

Step s2013 if the user has received new S-TMSI, then sends response message to network.

Embodiment 19, a kind of update method flow process as shown in figure 21, the user is registered to LTE earlier, change to UMTS then, in UMTS, carry out Routing Area Update then, show carrying foundation, triggered indirectly by new Serving Gateway the opportunity of setting up before UpdateLocation.Present embodiment may further comprise the steps:

Step s2101, the user initiates Routing Area Update.

Step s2102, new SGSN is to the contextual information of asking the user by former SGSN to MME.

Step s2103, MME returns contextual information by former SGSN to new SGSN, and carry control plane address and the chain of command TEID (can be control plane address and the chain of command TEID that distributes for former ServingGateway, or be newly assigned control plane address of new Serving Gateway and chain of command TEID) that distributes for Serving Gateway.

Step s2104 optionally authenticates the user.

Step s2105, new SGSN returns acknowledge message by former SGSN to MME.Wherein, new SGSN sends Serving Gateway Change sign to former SGSN.

Step s2106, the bearer context information that SGSN receives according to MME among the step s2103 is established to the carrying on new Serving Gateway and the PDN Gateway.

Step s2107a, SGSN sends to new Serving Gateway and follows update request, the control plane address and the chain of command TEID that receive from MME among the step s2103 are sent to new Serving Gateway, new Serving Gateway is established to the context of MME, write down the above-mentioned information of receiving, optionally, distribute new control plane address and chain of command TEID for MME.

Step s2107, new Serving Gateway is according to the chain of command information of the MME that receives from s2107a message, send carrying to MME and set up request message, with control plane address and chain of command TEID (ServingGateway is that the newly assigned or Serving Gateway of MME is that SGSN distributes) transmission MME.

Step s2107c, if MME sends in step s2103 is the chain of command information of former Serving Gateway, then MME is updated to the relevant information of the Serving Gateway in the former context relevant information of new ServingGateway; If what MME sent among the step s2103 is newly assigned chain of command information, the newly-built context of MME then, and recommend the above-mentioned information of receiving for admission to school.Then, MME returns carrying to new ServingGateway and sets up response message.S2107c also can be after s2107f.

Step s2107d, receive s2107c after, new Serving Gateway returns to SGSN and follows the renewal response message.

Step s2107e, if MME sends in step s2103 is the chain of command information of former Serving Gateway, then MME does not delete local context; If what MME sent in step s2103 is newly assigned chain of command information, then MME is with local corresponding former context deletion.Then, MME sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to MME after deleting its local context.

Step s2107f, former Serving Gateway send response message to MME after deleting its local context.

Step s2108-step s2111, SGSN initiate the position to HLR and upgrade.Optionally, HLR can indicate former SGSN deletion corresponding bearer resource.Because former SGSN receives Serving GatewayChange sign at s2105, it can indicate the former Serving Gateway deletion context relevant with former SGSN, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not the s2107e/f step, former SGSN receives Serving Gateway Change sign at s2105, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former SGSN and the context relevant with MME), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s2112, SGSN sends the routing update response to the user.

Step s2113 if the user has received new S-TMSI, then sends response message to network.

Embodiment 20, a kind of update method flow process as shown in figure 22, the user is registered to LTE earlier, changes to UMTS then, carries out Routing Area Update then in UMTS, shows that carrying sets up, triggered indirectly by MME the opportunity of setting up after UpdateLocation.Present embodiment is similar with the flow process of embodiment 17, and indication follows the renewal related news to occur in after the Update Location process.

Embodiment 21, a kind of update method flow process as shown in figure 23, the user is registered to LTE earlier, change to UMTS then, in UMTS, carry out Routing Area Update then, show carrying foundation, triggered indirectly by new Serving Gateway the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 19, and indication follows the renewal related news to occur in after the Update Location process.

Embodiment 22, a kind of update method flow process as shown in figure 24, the user is registered to UMTS earlier, changes to LTE then, implicit expression carrying is set up, message sequence changes.Present embodiment may further comprise the steps:

Step s2401, user's initiating updating of tracking area.

Step s2402, MME is to SGSN request user's contextual information.

Step s2403, SGSN returns contextual information to MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s2404 optionally authenticates the user.

If step s2405 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the MME.

Step s2406, the bearer context information that MME receives according to SGSN among the step s2403 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s2406a message sends to new ServingGateway with chain of command/user's face address and the control chain of command/user's face TEID that receives from SGSN among the step s2403, and new Serving Gateway is established to the context of SGSN, and writes down the above-mentioned information of receiving.After new Serving Gateway receives s2406c message, optionally, it is sent to SGSN by s2406d message for newly assigned control plane address of SGSN and chain of command TEID, essential, it is sent to MME for SGSN newly assigned user's face address and user's face TEID by s2406d message.

Step s2407, the chain of command relevant information of the new Serving Gateway that MME will receive from s2406d (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user plane information are issued SGSN.If what SGSN sent in step s2403 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s2403 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and recommend the above-mentioned information of receiving for admission to school.Simultaneously, MME sends to follow to SGSN and upgrades indication Following Update Indicator.

Step s2408, SGSN receive to follow and upgrade indication Following Update Indicator, if SGSN sends in step s2403 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s2403 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former ServingGateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s2409-step s2412, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.

Step s2413, MME sends the tracing section updating response to the user.

Step s2414 if the user has received new P-TMSI, then sends response message to network.

Present embodiment is by setting up the related of new Serving Gateway and SGSN, realized under limitation signaling, switching when Serving Gateway changes between different radio access technologies, thus downlink data arrive and upstream data arrival in can accelerate the processing speed of system.

Embodiment 23, a kind of update method flow process as shown in figure 25, the carrying of implicit expression is set up, message sequence is constant.The difference of present embodiment and embodiment 22 is, Context Acknowledge message is also after step s2504, chain of command/user's face relevant information of new Serving Gateway does not send to SGSN by Context Acknowledge message, but by following update inquiry information to send to SGSN's.Wherein s2508b message also can send after s2508d.

Embodiment 24, a kind of update method flow process as shown in figure 26, the user is registered to UMTS earlier, changes to LTE then, shows that carrying sets up, triggered indirectly by SGSN the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s2601, user's initiating updating of tracking area.

Step s2602, MME is to SGSN request user's contextual information.

Step s2603, SGSN returns contextual information to MME.

Step s2604 optionally authenticates the user.

Step s2605, MME returns acknowledge message to SGSN.

If step s2606 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the MME.

Step s2607, the bearer context information that MME receives according to SGSN among the step s2603 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s2607a message is carried to follow and is upgraded indication Following Update Indicator.New Serving Gateway upgrades indication Following Update Indicator according to following of receiving, after receiving s2607c message, optionally, for SGSN distributes new control plane address and chain of command TEID and sends to SGSN by s2607d message, essential, for SGSN distributes new user's face address and user's face TEID and sends to SGSN by s2607d message.

Step s2608a, MME sends to SGSN and follows update request, wherein carries from system face address that new ServingGateway receives and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information.

Step s2608b, SGSN is according to chain of command/user's face address and the chain of command/user's face TEID of the new Serving Gateway that receives from s2608a message, be the new newly-built new context of Serving Gateway, preserve the above-mentioned information of receiving, distribute new chain of command/user's face address and optional chain of command/user's face TEID, send carrying foundation request to new Serving Gateway then, wherein carrying is the new newly assigned chain of command of ServingGateway/user's face address and chain of command/user's face TEID.Perhaps, SGSN is updated to the relevant information of new Serving Gateway with the relevant information of the Serving Gateway in the former context, and will send to new Serving Gateway for chain of command/user's face address and the chain of command/user's face TEID that former Serving Gateway distributes.New Serving Gateway receives after the carrying foundation request of SGSN transmission, is the newly-built context of SGSN, preserves chain of command/user plane information of receiving from MME, returns carrying to SGSN then and sets up response message.

Step s2608c, SGSN receive that carrying sets up response message, if SGSN sends in step s2608b is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s2608b is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s2608d, SGSN send to MME and follow the renewal response message.

Step s2609-step s2612, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.

Step s2613, MME sends the tracing section updating response to the user.

Step s2614 if the user has received new P-TMSI, then sends response message to network.

Embodiment 25, a kind of update method flow process as shown in figure 27, the user is registered to UMTS earlier, changes to LTE then, shows that carrying sets up, directly triggered by new ServingGateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s2701, user's initiating updating of tracking area.

Step s2702, MME is to SGSN request user's contextual information.

Step s2703, SGSN returns contextual information to MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s2704 optionally authenticates the user.

Step s2705, MME returns acknowledge message to SGSN.

If step s2706 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the MME.

Step s2707, the bearer context information that MME receives according to SGSN among the step s2703 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s2707a message sends to new ServingGateway with chain of command/user's face address and the chain of command/user's face TEID that receives from SGSN among the step s2703, new Serving Gateway is established to the context of SGSN, write down the above-mentioned information of receiving, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID.And, carry in the s2707a message to follow and upgrade indication FollowingUpdate Indicator.

Step s2708a, new Serving Gateway is according to the chain of command information of receiving from s2707a message of upgrading indication Following Update Indicator and SGSN of following of carrying, send carrying to SGSN and set up request message, its control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information are sent to SGSN.S2708a message can send after s2707a.

Step s2708b, if SGSN sends in step s2703 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s2703 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and recommend the above-mentioned information of receiving for admission to school.Then, SGSN returns carrying to new Serving Gateway and sets up response message.S2708b also can be after s2708d.

Step s2708c, if SGSN sends in step s2703 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s2703 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.

Step s2708d, former Serving Gateway send response message to SGSN after deleting its local context.

Step s2709-step s2712, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.

Step s2713, MME sends the tracing section updating response to the user.

Step s2714 if the user has received new P-TMSI, then sends response message to network.

Embodiment 26, a kind of update method flow process as shown in figure 28, the user is registered to UMTS earlier, changes to LTE then, shows that carrying sets up, triggered indirectly by new ServingGateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s2801, user's initiating updating of tracking area.

Step s2802, MME is to SGSN request user's contextual information.

Step s2803, SGSN returns contextual information to MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s2804 optionally authenticates the user.

Step s2805, MME returns acknowledge message to SGSN.

If step s2806 is context and corresponding ServingGateway and this context of PDN Gateway exchange deletion of having the user to leave in the past on the MME.

Step s2807, the bearer context information that MME receives according to SGSN among the step s2803 is established to the carrying on new Serving Gateway and the PDN Gateway.

Step s2808a, MME sends to new Serving Gateway and follows update request, chain of command/user's face the address and the chain of command/user's face TEID that receive from SGSN among the step s2803 are sent to new ServingGateway, new Serving Gateway is established to the context of SGSN, write down the above-mentioned information of receiving, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID.

Step s2808b, new Serving Gateway is according to the chain of command information of the SGSN that receives from s2808a message, send carrying to SGSN and set up request message, with control plane address and chain of command TEID (ServingGateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information transmission SGSN.

Step s2808c, if SGSN sends in step s2803 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s2803 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and recommend the above-mentioned information of receiving for admission to school.Then, SGSN returns carrying to new Serving Gateway and sets up response message.S2808c also can be after s2808f.

Step s2808d, receive s2808c after, new Serving Gateway returns to MME and follows the renewal response message.

Step s2808e, if SGSN sends in step s2803 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s2803 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.

Step s2808f, former Serving Gateway send response message to SGSN after deleting its local context.

Step s2809-step s2812, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.

Step s2813, MME sends the tracing section updating response to the user.

Step s2814 if the user has received new P-TMSI, then sends response message to network.

Embodiment 27, a kind of update method flow process as shown in figure 29, the user is registered to UMTS earlier, changes to LTE then, shows that carrying sets up, triggered indirectly by SGSN the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 24, and indication follows the renewal related news to occur in after the Update Location process.

Embodiment 28, a kind of update method flow process as shown in figure 30, the user is registered to UMTS earlier, changes to LTE then, shows that carrying sets up, triggered indirectly by new ServingGateway the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 26, and indication follows the renewal related news to occur in after the Update Location process.

Embodiment 29, a kind of update method flow process as shown in figure 31, the user is registered to LTE earlier, changes to UMTS then, and then changes to LTE, and then changes to UMTS, implicit expression carrying is set up, message sequence changes.Present embodiment may further comprise the steps:

Step s3101, user's initiating updating of tracking area.

Step s3102, MME is to SGSN request user's contextual information.

Step s3103, SGSN returns contextual information to MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s3104 optionally authenticates the user.

Step s3105, the bearer context information that MME receives according to SGSN among the step s3103 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s3105a message sends to new ServingGateway with chain of command/user's face address and the chain of command/user's face TEID that receives from SGSN among the step s3103, and new Serving Gateway is established to the context of SGSN, and writes down the above-mentioned information of receiving.After new Serving Gateway receives s3105c message, optionally, it is newly assigned control plane address of SGSN and chain of command TEID, essential, it is sent to MME for SGSN newly assigned user's face address and user's face TEID by s3105d message.

Step s3106, the chain of command relevant information of the new Serving Gateway that MME will receive from s3106d (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information are issued SGSN.If what SGSN sent in step s3103 is chain of command/user plane information of former ServingGateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s3103 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and recommend the above-mentioned information of receiving for admission to school.Simultaneously, MME sends to follow to SGSN and upgrades indication Following Update Indicator.

Step s3107, SGSN receive to follow and upgrade indication Following Update Indicator, if SGSN sends in step s3103 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s3103 is newly assigned chain of command information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s3108a, SGSN sends gateway change request to former MME, wherein carries ServingGateway Change sign.

Step s3108b, former MME deletes the association of SGSN, sends gateway change response to SGSN.

Step s3108c, SGSN delete the association of former MME, send the gateway change to new MME and confirm.

Step s3109-step s3112, MME initiate the position to HLR and upgrade.HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving Gateway Change sign at s3108a, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s3107 step message, former MME receives Serving Gateway Change sign at s3108a, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDNGateway.

Step s3113, MME sends the tracing section updating response to the user.

Step s3114 if the user has received new P-TMSI, then sends response message to network.

The scheme of another possibility is step s3108a, and step s3108b between the step s3103, does not have step s3108c at step s3102.

Embodiment 30, a kind of update method flow process shown in figure 32, the carrying of implicit expression is set up, message sequence is constant.The difference of present embodiment and embodiment 29 is, Context Acknowledge message is also after step s3204, the chain of command of new Serving Gateway is relevant/and user plane information do not send to SGSN by Context Acknowledge message, but by following update inquiry information to send to SGSN's.Wherein s3207b message also can send after s3207d.In addition, gateway changes request message after s3207a message, and does not have gateway to change acknowledge message, the substitute is and follows the renewal response message.

In the present embodiment, step s3207a-2, step s3207a-3 can also be placed between step s3202 and the step s3203, step s3207b is placed on after the step s3207d.

Embodiment 31, a kind of update method flow process as shown in figure 33, the user is registered to LTE earlier, changes to UMTS then, and then changes to LTE, shows that carrying sets up, triggered indirectly by SGSN the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s3301, user's initiating updating of tracking area.

Step s3302, MME is to SGSN request user's contextual information.

Step s3303, SGSN returns contextual information to MME.

Step s3304 optionally authenticates the user.

Step s3305, MME returns acknowledge message to SGSN.

Step s3306, the bearer context information that MME receives according to SGSN among the step s3303 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s3306a message is carried to follow and is upgraded indication Following Update Indicator.New Serving Gateway upgrades indication Following Update Indicator according to following of receiving, after receiving s3306c message, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID, and send to MME by s3306d message.

Step s3307a, MME sends to SGSN and follows update request, wherein carries from system face address that new ServingGateway receives and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information.

Step s3307a-2, SGSN sends gateway change request to former MME, wherein carries ServingGateway Change sign.

Step s3307a-3, former MME deletes the association of SGSN, sends gateway change response to SGSN.

Step s3307b, SGSN is according to chain of command/user's face address and the chain of command/user's face TEID of the new Serving Gateway that receives from s3307a message, be the new newly-built new context of Serving Gateway, preserve the above-mentioned information of receiving, distribute new chain of command/user's face address and chain of command/user's face TEID, send carrying foundation request to new Serving Gateway then, wherein carrying is the new newly assigned chain of command of Serving Gateway/user's face address and chain of command/user's face TEID.Perhaps, SGSN is updated to the relevant information of new Serving Gateway with the relevant information of the Serving Gateway in the former context, and will send to new Serving Gateway for chain of command/user's face address and the chain of command/user's face TEID that former Serving Gateway distributes.New Serving Gateway receives after the carrying foundation request of SGSN transmission, is the newly-built context of SGSN, preserves chain of command/user plane information of receiving from SGSN, returns carrying to SGSN then and sets up response message.

Step s3307c, SGSN receive that carrying sets up response message, if SGSN sends in step s3307 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s3307 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s3307d, SGSN send to MME and follow the renewal response message.

Step s3309-step s3312, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving GatewayChange sign at s3307a-2, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s3307 step message, former MME receives Serving Gateway Change sign at s3307a-2, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s3313, MME sends the tracing section updating response to the user.

Step s3314 if the user has received new P-TMSI, then sends response message to network.

The scheme of another possibility is step s3307a-2, and step s3307a-3 is at step s3302, between the step s3303.

Embodiment 32, a kind of update method flow process as shown in figure 34, the user is registered to LTE earlier, changes to UMTS then, and then changes to LTE, shows that carrying sets up, directly triggered by new Serving Gateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s3401, user's initiating updating of tracking area.

Step s3402, MME is to SGSN request user's contextual information.

Step s3403, SGSN returns contextual information to MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s3404 optionally authenticates the user.

Step s3405, MME returns acknowledge message to SGSN.

Step s3406, the bearer context information that MME receives according to SGSN among the step s3403 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s3406a message sends to new ServingGateway with chain of command/user's face address and the chain of command/user's face TEID that receives from SGSN among the step s3403, new Serving Gateway is established to the context of SGSN, write down the above-mentioned information of receiving, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID.And, carry in the s3406a message to follow and upgrade indication FollowingUpdate Indicator.

Step s3407a, new Serving Gateway is according to the chain of command information of receiving from s3406a message of upgrading indication Following Update Indicator and SGSN of following of carrying, send carrying to SGSN and set up request message, its control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information are sent to SGSN.S3407a message can send after s3406a.

Step s3407b, if SGSN sends in step s3403 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s3403 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and recommend the above-mentioned information of receiving for admission to school.Then, SGSN returns carrying to new Serving Gateway and sets up response message.S3407b also can be after s3407d.

Step s3407c, if SGSN sends in step s3403 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s3403 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.

Step s3407d, former Serving Gateway send response message to SGSN after deleting its local context.

Step s3408a, SGSN sends gateway change request to former MME, wherein carries ServingGateway Change sign.

Step s3408b, the former association of deleting SGSN of MME sends gateway change response to SGSN.

Step s3408c, SGSN delete the association of former MME, send the gateway change to new MME and confirm.

Step s3409-step s3412, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving GatewayChange sign at s3408a, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s3407c/d step message, former MME receives Serving Gateway Change sign at s3408a, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s3413, MME send to follow the tracks of to the user and upgrade response.

Step s3414 if the user has received new P-TMSI, then sends response message to network.

In the present embodiment, step s3408a, step s3408b can also be placed between step s3402 and the step s3403, remove step s3408c.

Embodiment 33, a kind of update method flow process as shown in figure 35, the user is registered to LTE earlier, changes to UMTS then, and then changes to LTE, shows that carrying sets up, triggered indirectly by new Serving Gateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s3501, user's initiating updating of tracking area.

Step s3502, MME is to SGSN request user's contextual information.

Step s3503, SGSN returns contextual information to MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s3504 optionally authenticates the user.

Step s3505, MME returns acknowledge message to SGSN.

Step s3506, the bearer context information that MME receives according to SGSN among the step s3503 is established to the carrying on new Serving Gateway and the PDN Gateway.

Step s3507a, MME sends to new Serving Gateway and follows update request, chain of command/user's face the address and the chain of command/user's face TEID that receive from SGSN among the step s3503 are sent to new ServingGateway, new Serving Gateway is established to the context of SGSN, write down the above-mentioned information of receiving, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID.

Step s3507b, new Serving Gateway is according to the chain of command information of the SGSN that receives from s3507a message, send carrying to SGSN and set up request message, control plane address and chain of command TEID (ServingGateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information are sent SGSN.

Step s3507b-2, SGSN sends gateway change request to former MME, wherein carries ServingGateway Change sign.

Step s3507b-3, former MME deletes the association of SGSN, sends gateway change response to SGSN.

Step s3507c, if SGSN sends in step s3503 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s3503 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and preserve the above-mentioned information of receiving.Then, SGSN returns carrying to new Serving Gateway and sets up response message.S3507c also can be after s3507f.

Step s3507d, receive s3507c after, new Serving Gateway returns to MME and follows the renewal response message.

Step s3507e, if SGSN sends in step s3503 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s3503 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.

Step s3507f, former Serving Gateway send response message to SGSN after deleting its local context.

Step s3508-step s3511, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving GatewayChange sign at s3508a, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s3507e/f step message, former MME receives Serving Gateway Change sign at s3508a, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s3513, MME send to follow the tracks of to the user and upgrade response.

Step s3514 if the user has received new P-TMSI, then sends response message to network.

In the present embodiment, step s3507a-2, step s3507a-3 can also be placed between step s3502 and the step s3503.

Embodiment 34, a kind of update method flow process as shown in figure 36, the user is registered to LTE earlier, changes to UMTS then, and then changes to LTE, shows that carrying sets up, triggered indirectly by SGSN the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 31, and indication follows the renewal related news to occur in after the Update Location process, and Gateway Change message is between step s3602, step s3603.

Embodiment 35, a kind of update method flow process as shown in figure 37, the user is registered to LTE earlier, changes to UMTS then, and then changes to LTE, shows that carrying sets up, triggered indirectly by new Serving Gateway the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 33, and indication follows the renewal related news to occur in after the Update Location process, and Gateway Change message is between step s3702, step s3703.

Embodiment 36, a kind of update method flow process as shown in figure 38, the user is registered to UMTS earlier, changes to LTE then, carries out tracking area update then in LTE, implicit expression carrying is set up, message sequence changes.Present embodiment may further comprise the steps:

Step s3801, user's initiating updating of tracking area.

Step s3802, new MME is by the contextual information of former MME to SGSN request user.

Step s3803, SGSN returns contextual information by former MME to new MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s3804 optionally authenticates the user.

Step s3805, the bearer context information that new MME receives according to SGSN among the step s3803 is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s3805a message sends to new ServingGateway with chain of command/user's face address and the chain of command/user's face TEID that receives from SGSN among the step s3803, and new Serving Gateway is established to the context of SGSN, and writes down the above-mentioned information of receiving.After new Serving Gateway receives s3805c message, optionally, it is newly assigned control plane address of SGSN and chain of command TEID, essential, be SGSN newly assigned user's face address and user's face TEID with it, send to SGSN by s3805d message.

Step s3806, the chain of command relevant information of the new Serving Gateway that new MME will receive from s3806d (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information are issued SGSN by former MME.If what SGSN sent in step s3803 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the ServingGateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s3803 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and preserve the above-mentioned information of receiving.Simultaneously, new MME sends to follow to SGSN by former MME and upgrades indication Following Update Indicator, and new MME sends Serving Gateway Change indication to former MME.

Step s3807, SGSN receive to follow and upgrade indication Following Update Indicator, if SGSN sends in step s3803 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s3803 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former ServingGateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s3808-step s3811, MME initiate the position to HLR and upgrade.HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving Gateway Change sign at s3806, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former ServingGateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s3807 step message, former MME receives Serving Gateway Change sign at s3806, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s3812.MME sends the tracing section updating response to the user.

If step s3813. user has received new P-TMSI, then send response message to network.

Embodiment 37, a kind of update method flow process as shown in figure 39, the user is registered to UMTS earlier, changes to LTE then, carries out tracking area update then in LTE, the carrying of implicit expression is set up, message sequence is constant.The difference of present embodiment and embodiment 36 is, Context Acknowledge message is also after step s3904, chain of command/user's face relevant information of new Serving Gateway does not send to SGSN by ContextAcknowledge message, but by following update inquiry information to send to SGSN's.Wherein s3907b message also can send after s3907d.

Embodiment 38, a kind of update method flow process as shown in figure 40, the user is registered to UMTS earlier, changes to LTE then, carries out tracking area update then in LTE, shows that carrying sets up, triggered indirectly by SGSN the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s4001, user's initiating updating of tracking area.

Step s4002, new MME is to former MME request user's contextual information.

Step s4003, former MME returns contextual information to new MME.Wherein carry the chain of command relevant information of SGSN.

Step s4004 optionally authenticates the user.

Step s4005, new MME returns acknowledge message to former MME.Wherein carry Serving GatewayChange sign.

Step s4006, the bearer context information that new MME receives according to step s4003 Central Plains MME is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s4006a message is carried to follow and is upgraded indication Following Update Indicator.New Serving Gateway upgrades indication Following Update Indicator according to following of receiving, after receiving s4006c message, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID, and send to MME by s4006d message.

Step s4007a, the chain of command relevant information of the SGSN that new MME receives in according to step s4003, send to SGSN and to follow update request, wherein carry from system face address that new Serving Gateway receives and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information.

Step s4007b, SGSN is according to chain of command/user's face address and the chain of command/user's face TEID of the new Serving Gateway that receives from s4007a message, be the new newly-built new context of Serving Gateway, preserve the above-mentioned information of receiving, distribute new chain of command/user's face address and chain of command/user's face TEID, send carrying foundation request to new Serving Gateway then, wherein carrying is the new newly assigned chain of command of Serving Gateway/user's face address and chain of command/user's face TEID.Perhaps, SGSN is updated to the relevant information of new Serving Gateway with the relevant information of the Serving Gateway in the former context, and will send to new Serving Gateway for chain of command/user's face address and the chain of command/user's face TEID that former Serving Gateway distributes.New Serving Gateway receives after the carrying foundation request of SGSN transmission, is the newly-built context of SGSN, preserves chain of command/user plane information of receiving from SGSN, returns carrying to SGSN then and sets up response message.

Step s4007c, SGSN receive that carrying sets up response message, if SGSN sends in step s4007c is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s4007c is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s4007d, SGSN send to MME and follow the renewal response message.

Step s4008-step s4011, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving GatewayChange sign at s4005, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, there is not s4007c step message, former MME receives Serving Gateway Change sign at s4005, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s4012, MME sends the tracing section updating response to the user.

Step s4013 if the user has received new P-TMSI, then sends response message to network.

Embodiment 39, a kind of update method flow process as shown in figure 41, the user is registered to UMTS earlier, change to LTE then, in LTE, carry out tracking area update then, show carrying foundation, directly triggered by new Serving Gateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s4101, user's initiating updating of tracking area.

Step s4102, new MME is to the contextual information of asking the user by former MME to SGSN.

Step s4103, SGSN returns contextual information by former MME to new MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s4104 optionally authenticates the user.

Step s4105, new MME returns acknowledge message by former MME to SGSN.Wherein, new MME sends Serving Gateway Change sign to former MME.

Step s4106, the bearer context information that new MME receives according to step s4103 Central Plains MME is established to the carrying on new Serving Gateway and the PDN Gateway.Wherein, s4106a message sends to new ServingGateway with chain of command/user's face address and the chain of command/user's face TEID that receives from SGSN among the step s4103, new Serving Gateway is established to the context of SGSN, write down the above-mentioned information of receiving, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID.And, carry in the s4106a message to follow and upgrade indication FollowingUpdate Indicator.

Step s4107a, new Serving Gateway is according to the chain of command information of receiving from s4106a message of upgrading indication Following Update Indicator and SGSN of following of carrying, send carrying to SGSN and set up request message, its control plane address and chain of command TEID (Serving Gateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information are sent to SGSN.S4107a message can send after s4106a.

Step s4107b, if SGSN sends in step s4103 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s4103 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and preserve the above-mentioned information of receiving.Then, SGSN returns carrying to new Serving Gateway and sets up response message.S4107b also can be after s4107d.

Step s4107c, if SGSN sends in step s4103 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s4103 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s4107d, former Serving Gateway send response message to SGSN after deleting its local context.

Step s4108-step s4111, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving GatewayChange sign at s4105, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, the message that does not have step s4107c/d, former MME receives Serving Gateway Change sign at s4105, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s4112, MME sends the tracing section updating response to the user.

Step s4113 if the user has received new P-TMSI, then sends response message to network.

Embodiment 40, a kind of update method flow process as shown in figure 42, the user is registered to UMTS earlier, change to LTE then, in LTE, carry out tracking area update then, show carrying foundation, triggered indirectly by new Serving Gateway the opportunity of setting up before Update Location.Present embodiment may further comprise the steps:

Step s4201, user's initiating updating of tracking area.

Step s4202, new MME is to the contextual information of asking the user by former MME to SGSN.

Step s4203, SGSN returns contextual information by former MME to new MME, and carry chain of command/user's face address and the chain of command/user's face TEID (can be chain of command/user's face address and the chain of command/user's face TEID that distributes for former Serving Gateway, or be the newly assigned chain of command of new Serving Gateway/user's face address and chain of command/user's face TEID) that distributes for Serving Gateway.

Step s4204 optionally authenticates the user.

Step s4205, new MME returns acknowledge message by former MME to SGSN.Wherein, new MME sends Serving Gateway Change sign to former MME.

Step s4206, the bearer context information that MME receives according to SGSN among the step s4203 is established to the carrying on new Serving Gateway and the PDN Gateway.

Step s4207a, MME sends to new Serving Gateway and follows update request, chain of command/user's face the address and the chain of command/user's face TEID that receive from SGSN among the step s4203 are sent to new ServingGateway, new Serving Gateway is established to the context of SGSN, write down the above-mentioned information of receiving, optionally, for SGSN distributes new control plane address and chain of command TEID, essential, for SGSN distributes new user's face address and user's face TEID.

Step s4207b, new Serving Gateway is according to the chain of command information of the SGSN that receives from s4207a message, send carrying to SGSN and set up request message, with control plane address and chain of command TEID (ServingGateway is that the newly assigned or Serving Gateway of SGSN is that MME distributes) and user's face relevant information transmission SGSN.

Step s4207c, if SGSN sends in step s4203 is chain of command/user plane information of former Serving Gateway, then SGSN is updated to the relevant information of the Serving Gateway in the former context relevant information of new Serving Gateway; If what SGSN sent among the step s4203 is newly assigned chain of command/user plane information, the newly-built context of SGSN then, and recommend the above-mentioned information of receiving for admission to school.Then, SGSN returns carrying to new Serving Gateway and sets up response message.S4207c also can be after s4207f.

Step s4207d, receive s4207c after, new Serving Gateway returns to MME and follows the renewal response message.

Step s4207e, if SGSN sends in step s4203 is chain of command/user plane information of former Serving Gateway, then SGSN does not delete local context; If what SGSN sent among the step s4203 is newly assigned chain of command/user plane information, then SGSN is with local corresponding former context deletion.Then, SGSN sends the deleting load-bearing request to former Serving Gateway, requires the corresponding context of former Serving Gateway deletion.Former Serving Gateway sends response message to SGSN after deleting its local context.

Step s4207f, former Serving Gateway send response message to SGSN after deleting its local context.

Step s4208-step s4211, MME initiate the position to HLR and upgrade.Optionally, HLR can indicate former MME deletion corresponding bearer resource.Because former MME receives Serving GatewayChange sign at s4205, it can indicate the former Serving Gateway deletion context relevant with former MME, and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.Another method is, the message that does not have step s4207e/f, former MME receives Serving Gateway Change sign at s4205, it can indicate former Serving Gateway to delete this all users context (comprising context relevant with former MME and the context relevant with SGSN), and indicates former Serving Gateway not to be initiated to the deleting load-bearing flow process of PDN Gateway.

Step s4212, MME sends the tracing section updating response to the user.

Step s4213 if the user has received new P-TMSI, then sends response message to network.

Embodiment 41, a kind of update method flow process as shown in figure 43, the user is registered to UMTS earlier, changes to LTE then, carries out tracking area update then in LTE, shows that carrying sets up, triggered indirectly by SGSN the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 38, and indication follows the renewal related news to occur in after the Update Location process.

Embodiment 42, a kind of update method flow process as shown in figure 44, the user is registered to UMTS earlier, change to LTE then, in LTE, carry out tracking area update then, show carrying foundation, triggered indirectly by new Serving Gateway the opportunity of setting up after Update Location.Present embodiment is similar with the flow process of embodiment 40, and indication follows the renewal related news to occur in after the Update Location process.

The embodiment of the invention is utilized to follow to upgrade and is indicated Following Update Indicator to trigger in the process that triggers service gateway information updating.Figure 45 is a kind of structural representation that upgrades indication of following of the embodiment of the invention, comprises the type field of at least one byte and the content field of at least one byte.The embodiment of the invention can adopt dual mode to trigger, whether a kind of mode utilization is followed to upgrade to comprise in the indication and is followed update command (Following Update Required) to trigger, if follow the content field of upgrading indication to comprise the update command of following of 1bit (position) at least, then the renewal of gateway information is carried out in expression, otherwise does not carry out the renewal of gateway information.Another kind of mode is to utilize to follow the value of following update command that comprises in the renewal indication to trigger, and when this followed the value of update command to be predefined value (as 0), the renewal of gateway information was not carried out in expression; When this followed the value of update command to be another one value (as 1), the renewal of gateway information was carried out in expression.

A kind of service gateway information updating system configuration of the embodiment of the invention as shown in figure 46, the mobility controlled entity 20 that comprises new gateway 10 and former paging zone, when subscriber equipment switches to new paging zone by former paging zone, if gateway switches, switch to new gateway 10 by former gateway, then new gateway 10 is set up related with the mobility controlled entity 20 of former paging zone.

Wherein, new gateway 10 comprises mobility controlled entity information acquisition unit 101, allocation units 102 and trigger element 103; Mobility controlled entity information acquisition unit 101 is used to obtain the mobility controlled entity information of former paging zone, allocation units 102 are used for according to described mobility controlled entity information, be mobility controlled entity distribution chain of command and/or user's face of former paging zone, trigger element 103 is used to trigger the service gateway information updating process.

The mobility controlled entity 20 of former paging zone comprises gateway information management unit 201, mobility controlled entity information transmitting unit 202 and trigger element 203; Gateway information management unit 201 is used for setting up, upgrades or deletion gateway information, mobility controlled entity information transmitting unit 202 is used for providing mobility controlled entity information to gateway, and trigger element 203 is used to trigger the service gateway information updating process.

The mobility controlled entity 20 of present embodiment by setting up new gateway 10 and former paging zone related, realized under limitation signaling, switching when Serving Gateway changes between different radio access technologies, thus downlink data arrive and upstream data arrival in can accelerate the processing speed of system.

The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1, a kind of service gateway information updating method, it is characterized in that, when subscriber equipment switches to new paging zone by former paging zone, if gateway switches, then set up mobility controlled entity related of described new gateway and described former paging zone, the former service gateway information updating that the mobility controlled entity of described former paging zone is preserved is new gateway information.

2, service gateway information updating method according to claim 1 is characterized in that the new gateway of described foundation specifically comprises with the related of mobility controlled entity of former paging zone:

Described new gateway obtains the mobility controlled entity information of described former paging zone;

According to described mobility controlled entity information, the mobility controlled entity that described new gateway is described former paging zone distributes chain of command and/or user's face;

The mobility controlled entity of described former paging zone is set up related according to the chain of command and/or the user plane information of distributing with described new gateway.

As service gateway information updating method as described in the claim 2, it is characterized in that 3, the mobility controlled entity of described former paging zone is related with new gateway foundation according to chain of command that distributes and/or user plane information, specifically comprises:

If the mobility controlled entity information that described new gateway obtains is the chain of command and/or the user plane information of former gateway, then the mobility controlled entity of described former paging zone is the information of new gateway with the service gateway information updating in the former context;

If the mobility controlled entity information that described new gateway obtains is newly assigned chain of command and/or user plane information, the newly-built context of the mobility controlled entity of described former paging zone then, and preserve chain of command and/or the user plane information that the described new gateway of receiving distributes.

4, as service gateway information updating method as described in the claim 2, it is characterized in that, after the described former service gateway information updating that the mobility controlled entity of former paging zone is preserved is new gateway information, also comprise the mobility controlled entity information of the former paging zone of preserving in the described former gateway of deletion.

5, as service gateway information updating method as described in the claim 4, it is characterized in that the mobility controlled entity information of the former paging zone of preserving in the former gateway of described deletion specifically comprises:

The mobility controlled entity of described former paging zone sends the deleting load-bearing request to described former gateway;

The described former gateway deletion context corresponding with the mobility controlled entity of described former paging zone, and return response message.

6, as service gateway information updating method as described in the claim 5, it is characterized in that, before former gateway sends the deleting load-bearing request, also comprise at the mobility controlled entity of described former paging zone:

If the mobility controlled entity information that described new gateway obtains is newly assigned chain of command and/or user plane information, then the mobility controlled entity of former paging zone is with local corresponding former context deletion.

7, as service gateway information updating method as described in the claim 4, it is characterized in that the mobility controlled entity information of the former paging zone of preserving in the former gateway of described deletion specifically comprises:

In the renewal process of mobility controlled entity at home subscriber server of new paging zone, former gateway deletion user's contextual information, this contextual information comprises the relevant contextual information of mobility controlled entity with new paging zone, with the contextual information relevant with the mobility controlled entity of former paging zone.

8, as service gateway information updating method as described in the claim 4, it is characterized in that, if the user inserts the universal mobile telecommunications system at place, new route district or the evolvement network at new tracking area place for the first time, then former gateway is not deleted the carrying of packet data network gateway.

9, as claim 1 to 8 service gateway information updating method as described in each, it is characterized in that, described mobility controlled entity is service universal grouping wireless business supporting node SGSN in universal mobile telecommunications system, is Mobility Management Entity MME in evolvement network.

10, as claim 1 to 8 service gateway information updating method as described in each, it is characterized in that described paging zone is the route district in universal mobile telecommunications system, is tracking area in evolvement network.

11, as claim 1 to 8 service gateway information updating method as described in each, it is characterized in that described service gateway information updating process is by a kind of triggering the in the following triggering mode: new gateway directly triggers, the mobility controlled entity of former paging zone directly triggers, new gateway triggers indirectly, the mobility controlled entity of former paging zone triggers indirectly.

As service gateway information updating method as described in the claim 11, it is characterized in that 12, the utilization of described service gateway information updating process is followed and upgraded indication and trigger; Described following upgraded indication and comprised the type field of at least one byte and the content field of at least one byte.

13, as service gateway information updating method as described in the claim 12, it is characterized in that described content field comprises at least one the update command of following.

14, a kind of service gateway information updating system, it is characterized in that, the mobility controlled entity that comprises new gateway and former paging zone, when subscriber equipment switches to new paging zone by former paging zone, if gateway switches, then described new gateway is set up related with the mobility controlled entity of described former paging zone.

15, as service gateway information updating system as described in the claim 14, it is characterized in that described new gateway comprises mobility controlled entity information acquisition unit and allocation units;

Described mobility controlled entity information acquisition unit is used to obtain the mobility controlled entity information of former paging zone;

Described allocation units are used for according to described mobility controlled entity information, are mobility controlled entity distribution chain of command and/or user's face of described former paging zone.

16, as service gateway information updating system as described in the claim 15, it is characterized in that described new gateway also comprises trigger element, is used to trigger the service gateway information updating process.

17, as service gateway information updating system as described in the claim 14, it is characterized in that the mobility controlled entity of described former paging zone comprises gateway information management unit and mobility controlled entity information transmitting unit;

Described gateway information management unit is used for setting up, upgrades or deletion gateway information;

Described mobility controlled entity information transmitting unit is used for providing mobility controlled entity information to gateway.

18, as service gateway information updating system as described in the claim 17, it is characterized in that the mobility controlled entity of described former paging zone also comprises trigger element, is used to trigger the service gateway information updating process.

19, a kind of gateway is characterized in that, comprises mobility controlled entity information acquisition unit and allocation units;

20, as gateway as described in the claim 19, it is characterized in that, also comprise trigger element, be used to trigger the service gateway information updating process.

21, a kind of mobility controlled entity is characterized in that, comprises gateway information management unit and mobility controlled entity information transmitting unit;

22, as mobility controlled entity as described in the claim 21, it is characterized in that, also comprise trigger element, be used to trigger the service gateway information updating process.