CN101594647B - Method for switching SR VCC service and apparatus thereof - Google Patents

Abstract

The embodiment of the invention discloses a method for switching a SR VCC service. The method comprises the following steps: when user equipment is switched from a GERAN/UTRAN network to a EUTRAN network, receiving a switch preparation request sent by the user equipment; judging whether the network resource of the user equipment exists in the EUTRAN network or not according to the received switch preparation request and mobile management entity information; carrying out the SR VCC service switch on the user equipment according to the result of judging whether the network resource of the user equipment exists or not. The embodiment of the invention further discloses a system and an apparatus for switching the SR VCC service. By using the method provided by the embodiment of the invention, and under the condition of judging whether the network resource of the user equipment exists or not, the switch adopts different processing methods so as to reduce information interaction and switch delay and ensure the voice continuity of the user equipment.

Description

Professional switching handling method of a kind of SR VCC and equipment

Technical field

The present invention relates to a kind of communications applications field, relate in particular to professional switching handling method of a kind of SR VCC and equipment.

Background technology

3GPP is in order to strengthen the competitiveness of future network, studying a kind of brand-new evolvement network, its system architecture diagram as shown in Figure 1, universal mobile telecommunications system (the Universal MobileTelecommunications System that comprises evolution, UMTS) land radio access web (E-UTRAN, Evolved UMTSTerrestrial Radio Access Network), be used to realize all and the wireless function associated of evolvement network; Mobile management entity (MME, Mobility Management Entity) is responsible for the mobile management of chain of command, comprises the management of user's context and mobile status, distributing user temporary identity sign etc.; Service gateway entity (SGW, Serving Gateway) is the user's face anchor point between the 3GPP access network, stops the interface of E-TURAN; Grouped data network gateway entity (PGW, Packet Data Network Gateway) is the user's face anchor point between 3GPP access network and the non-3 GPP access network network, the interface of termination and external packet data network (PDN, Packet Data Network)."Policy and Charging Rules Function entity (PCRF, Policyand Charging Rule Function) is used for policy control decision and flow based charging controlled function.Home network server (HSS, Home Subscriber Server) is used for storing user subscription information.

Be illustrated in figure 2 as existing single connecting system voice continuity (SR VCC, Single Radio VCC) system architecture diagram, in order to guarantee the continuity of speech business, increase function (S-IWF between a new logical functional entity SR VCC territory, SR VCC Interworking Function), this functional entity can be positioned over (the MSC of mobile switching centre, Mobile Switching Centre) in, and this MSC is called IMSC, the main effect of this entity is to help Single Radio UE to finish voice continuity between CS territory and PS territory.VCC-AS is that (IP Multimedia Subsystem IMS) is used to help through the functional entity that switch in the territory to IP Multimedia System in the system.When the user who carries out speech business switches to Long Term Evolution (LTE from the 2G/3G network, long-term evolution) during network, if have this user's Internet resources at the LTE network, then network side need not to redistribute the network side resource for the user in handoff procedure.

Need to prove, these two frameworks also do not mean that final System Architecture Evolution (SAE, SystemArchitecture Evolution) system architecture and SR VCC system architecture diagram, last framework may with these two frameworks difference to some extent, these two frameworks are not limited.

In the prior art, when the user from GSM EDGE Radio Access Network network (GSM EDGE Radio AccessNetwork, GERAN)/when UMTS wireless access network (UTRAN) network switches to the EUTRAN network, and the user is carrying out speech business, need switch to speech business on the EUTRAN network and guarantee voice continuity this moment, if still there are this user's Internet resources this moment at the LTE network, then network side need not in handoff procedure to the user redistributes the network side resource, and IMSC receive the handoff request of source after notice source GERAN/UTRAN network objectives side resource be ready to complete.Temporarily do not solve how to judge when the user switches to the EUTRAN network by GERAN/UTRAN whether the user exists this user's Internet resources at target EUTRAN network in the prior art, and do not have to solve the solution of when there are not this user's Internet resources in target EUTRAN network, how to carry out voice continuity yet.

Summary of the invention

In view of above-mentioned existing in prior technology problem, the embodiment of the invention provides professional switching handling method of a kind of SR VCC and equipment.When subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network, finish the professional switching of SR VCC according to the situation of target side network judgement user equipment network resource.

In order to solve the problems of the technologies described above, the embodiment of the invention has proposed the professional switching handling method of a kind of SR VCC, and this method comprises:

When subscriber equipment when the GERAN/UTRAN network switches to the EUTRAN network, receive the handover preparation request that subscriber equipment sends;

Handover preparation request and mobile management entity information according to described reception are judged the Internet resources that whether have subscriber equipment in the EUTRAN network;

SR VCC is professional to be switched for subscriber equipment carries out according to the result of the Internet resources that judge whether to exist subscriber equipment.

Accordingly, the embodiment of the invention has also proposed a kind of mobile switching centre, comprising:

First receiver module is used to receive subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network handover preparation request;

Judge module is used for judging according to handover preparation request and mobile management entity information that described first receiver module receives whether the EUTRAN network exists the Internet resources of subscriber equipment;

Handover module is used for judging whether to exist the result of the Internet resources of subscriber equipment to carry out that SR VCC is professional to be switched according to judge module.

Accordingly, the embodiment of the invention has also proposed a kind of mobile management entity, comprising:

First receiver module is used to receive registration indication information or the circuit domain log-on message that subscriber equipment sends;

Registering modules, the log-on message that is used for receiving according to first receiver module is to mobile switching centre's registration mobile management entity sign and/or customer equipment identification.

Accordingly, the embodiment of the invention has also proposed a kind of subscriber equipment, comprising:

Transmitting element is used for sending indication information to mobile management entity, and described indication information is taken mobile management entity sign and/or customer equipment identification in addition, is used to indicate mobile management entity to register to mobile switching centre.

Implement the embodiment of the invention, by the method and apparatus that provides in the embodiment of the invention, when subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network, judge at the target side network whether this subscriber equipment exists the Internet resources of this subscriber equipment, and according to the result who judges SRVCC is professional to be switched for subscriber equipment carries out, realization by said method, finished the Internet resources in the EUTRAN network have been judged, and judging whether to exist under the Internet resources situation of subscriber equipment, thereby when switching, adopt different processing methods, reduce interacting message, reduce handover delay, also can guarantee the voice continuity of subscriber equipment.

Description of drawings

Fig. 1 is existing SAE system architecture diagram;

Fig. 2 is existing SR VCC system construction drawing;

Fig. 3 is the first pass figure of the professional switching handling method of SR VCC in the embodiment of the invention;

Fig. 4 is second flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Fig. 5 is the 3rd flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Fig. 6 is the 4th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Fig. 7 is the 5th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Fig. 8 is the 6th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Fig. 9 is the 7th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Figure 10 is the 8th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Figure 11 is the 9th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Figure 12 is the tenth flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Figure 13 is the 11 flow chart of the professional switching handling method of SR VCC in the embodiment of the invention;

Figure 14 is the system construction drawing of the professional switching handling method of SR VCC in the embodiment of the invention;

Figure 15 is the structural representation of the mobile switching centre in the embodiment of the invention;

Figure 16 is the structural representation of the judge module in the embodiment of the invention;

Figure 17 is the structural representation of the handover module in the embodiment of the invention;

Figure 18 is the structural representation of the acquisition module in the embodiment of the invention;

Figure 19 is the structural representation of the mobile management entity in the embodiment of the invention;

Figure 20 is another structural representation of the mobile management entity in the embodiment of the invention;

Figure 21 is the structural representation of the subscriber equipment in the embodiment of the invention.

Embodiment

The embodiment of the invention provides professional switching handling method of a kind of SR VCC and equipment.When subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network, judge whether the target side network exists the Internet resources of subscriber equipment to finish the professional switching of SR VCC.

Because UE is when GERAN/UTRAN and EUTRAN carry out speech business and switch, S-IWF or IMSC are that UE carries out the intermediate function entity that voice switch between two networks, and it is getting in touch source network and target side network.When UE initiates to adhere to request back access network and sets up new Internet resources, MME information is registered among S-IWF or the IMSC, when this UE when the resource of LTE network is eliminated, MME initiatively cancels it and is registered in MME information among S-IWF or the IMSC; The S-IWF or the IMSC that when the S-IWF of service UE or IMSC change, also need in time MME information to be notified to service UE.When UE switches to the EUTRAN network by the GERAN/UTRAN network like this, thereby S-IWF or IMSC are by judging whether to exist the serving MME information of this UE to judge whether target EUTRAN network exists the Internet resources of this UE.If there are MME information in S-IWF or IMSC, perhaps S-IWF or IMSC send the carrying query requests to MME, inquire the EUTRAN network when having user's Internet resources, represent that then there are the Internet resources of UE in the EUTRAN network, otherwise then do not have the Internet resources of UE.By MME being registered among SIWF or the IMSC, (UE is after deletion of EUTRAN Internet resources or UE separation, MME need go registration), so S-IWF or IMSC can know whether UE exists Internet resources at the EUTRAN network, thereby when switching, adopt different processing methods, reduce interacting message, reduce handover delay.

Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.

Need to prove that the S-IWF/IMSC that describes in the literary composition represents S-IWF or IMSC, and the MME that relates to sign or SIWF/IMSC sign, sign wherein can refer to address or another name, does not limit here.Here the MSC that mentions can refer to IMSC or common MSC.

Fig. 3 shows the first pass figure of the professional switching handling method of SR VCC in the embodiment of the invention, when implementing this flow chart, if there are not this user's Internet resources in the EUTRAN network, then when subscriber equipment (UE) switches to the EUTRAN network by the GERAN/UTRAN network, SIWF/IMSC needs to indicate UE to adhere to again to set up the bearing resource of UE at the EUTRAN network in handoff procedure, to finish the handoff procedure of SR VCC, concrete steps are as follows:

Step S101:UE reporting measurement reports (measurement report);

Step S102:GERANA/UTRAN initiates to switch according to the measurement report decision that UE reports, and sends handoff request (HO Required) then and gives source MSC;

Step S103: source mobile switching centre (MSC) sends handover preparation request (Prepare Sub Ho Request) according to Target Cell Identifier and gives S-IWF/IMSC, and the notification target network switches;

Step S104:S-IWF/IMSC judges UE and do not have Internet resources in the EUTRAN network, satisfy transmission switching preparation response (Prepare Sub Ho Response) and give source MSC, this switching prepares to carry in the response network insertion indication (Network Access indication), inform that by this indication subscriber equipment need be in EUTRAN network insertion New-deployed Network resource to finish switching, judge that about S-IWF/IMSC UE does not exist the process of Internet resources can see that IMSC sends the Internet resources that the carrying query requests judges whether to exist subscriber equipment to MME among step S205 in the flow chart 4 and the step S206 for details in the EUTRAN network, or the IMSC MME information that directly whether inquiry exists subscriber equipment to be associated in its equipment, if there is MME information, then there are the Internet resources of subscriber equipment in the EUTRAN network, otherwise there are not the Internet resources of subscriber equipment in objective network;

Step S105: source MSC sends handoff request acknowledgment message (HO Response) and gives GERAN/UTRAN, in this HO Response message, carry Netwrok Access indication, inform that by this indication UE need be in EUTRAN network New-deployed Network resource to finish switching;

Step S106:GERAN/UTRAN sends switching command (HO Command) and gives UE, indication UE transfers to the EUTRAN network, carry Network Access indication in this message, indication UE inserts the New-deployed Network resource to finish switching again at the EUTRAN network;

Step S107:UE transfers under the covering of EUTRAN network, initiates attachment flow then or the TAU flow process is finished access, sets up the Internet resources of UE in the EUTRAN network, finishes SR VCC business, can see Fig. 4 to Fig. 8 for details about the bearing resource of setting up UE.

Fig. 4 shows second flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, SIWF/IMSC is by the global unique temporary identity (GUTI of UE in the EUTRAN network allocation, GloballyUnique Temporary Identity) thus value or MME sign is known the MME of previous service UE, can learn the MME address information according to described MME sign, thereby when UE switches to the EUTRAN network by the GERAN/UTRAN network, whether SIWF/IMSC exists the bearing resource of UE by GUTI value or the corresponding MME of MME sign inquiry, whether have bearing resource thereby judge UE in the EUTRAN network, concrete steps are as follows:

Step S201: before switching, UE is by IMS in the IMS territory and the control channel (ICCC between CS, IMS CS Control Channel) brings SIWF/IMSC with the GUTI value of UE or according to the MME sign that GUTI is worth going out, wherein: the serving MME sign that comprises the user in the GUTI value;

Step S202:UE reporting measurement reports (measurement report);

Step S203:GERAN/UTRAN initiates to switch according to the measurement report decision that UE reports, and sends HO Required then to source MSC;

Step S204: source MSC sends Prepare Sub Ho Request to S-IWF/IMSC according to Target Cell Identifier, and the notification target network switches;

Step S205:SIWF/IMSC sends bearing resource query messages (Bearer Resource Query) according to GUTI value of knowing among the step S201 or MME sign to corresponding M ME, carries UE sign and SIWF/IMSC sign in this message;

Step S206:MME receives (Bearer Resource Query) behind the bearing resource query messages, whether deposit described user's bearer context information among the inquiry MME, and whether the EUTRAN network of informing the SIWF/IMSC place in bearing resource Indication message (BearerResource Ind) exists this user's bearing resource, carry EPS bearer indication in this message, can know by this sign whether the EUTRAN network exists the bearing resource of this UE;

Need to prove, about the deterministic process among S205 in the step and the step S206, send the bearing resource inquiry according to the MME sign to corresponding M ME, can be when network switches among Fig. 5, the MME sign that MME sends to MSC, can be subscriber equipment is registered in MSC among Fig. 6 to Fig. 8 MME sign, also can be among Fig. 9 or Figure 10 in the UE change procedure, the MME sign that MSC obtains.If carried out the flow process among Figure 11 to Figure 13, when the Internet resources of subscriber equipment do not exist in the network, then need to carry out step S207.

Step S207: when not having the bearing resource of this UE in determining the EUTRAN network, SIWF/IMSC sends to switch and prepares response message (Prepare Sub Ho Response) to source MSC;

Step S208: source MSC sends handoff request and replys (HO Response) to inserting side GERAN/UTRAN;

Step S209:UE switches to the LTE network, and after finishing network insertion and setting up bearing resource, call anchor is fixed on the IMS network.

Fig. 5 shows the 3rd flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, and when UE switched to the GERAN/UTRAN network by the EUTRAN network, MME carried the MME sign when transmitting handoff request and/or UE identifies to SIWF/IMSC; It is follow-up when UE switches to the EUTRAN network by the GERAN/UTRAN network, SIWF/IMSC is identified to the bearing resource whether corresponding MME inquiry exists this UE according to UE sign and MME, thereby judge whether UE exists UE in the EUTRAN network Internet resources, to judge that whether needing in the handoff procedure is that UE redistributes Internet resources at the EUTRAN network and finishes switching, concrete steps are as follows:

Step S301:UE reporting measurement reports is given evolution network base station (eNodeB);

Step S302:eNodeB decision is initiated to switch, and sends handoff request Handover Request to mobile management entity (MME);

Step S303:MME switches to audio call among the SIWF/IMSC, sends to transmit handoff request (Forward Relocation Request) message, carries MM context, VDN, MSISDN, MME sign in the message;

The mobile switching centre of step S304:SIWF/IMSC notification target side network does resource and prepares flow process and territory switching flow;

Step S305:SIWF/IMSC sends and transmits handoff response (Forward Relocation Response) to MME;

Step S306:UE switches under the GERAN/UTRAN network;

Step S307 is identical to step S209 with flow chart 4 step S202 to step S314, identifies the bearing resource that judges whether to exist UE by the MME among the step S303, just no longer too much gives unnecessary details here.

Fig. 6 shows the 4th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, in the attaching process that subscriber equipment is initiated, can be by MME to MSC registration MME sign and/or UE sign, thereby when switching, judge whether there are Internet resources in the EUTRAN network according to the MME sign for network; When there are not the Internet resources of UE in the MSC judgement, UE initiates to adhere to request according to the mobile management entity of the network insertion indication information in the flow chart 3 in the EUTRAN network, finished the network insertion of UE and set up new Internet resources by the mode in the flow chart, thereby set up new Internet resources and finish the professional switching of SR VCC in the EUTRAN network, concrete steps are as follows:

Step S401:UE sends and adheres to request (Attach Request) message to MME, carries SR VCC ability or other any registration indication informations that can indicate MME to be registered to S-IWF/IMSC of UE in this message;

Carry out authentication (Authentication) flow process between step S402:UE, mobile management network element, the HSS;

Executing location is upgraded and insertion subscription data (UpdateLocation and Insert Subscriber Date) flow process between step S403:MME and the HSS, in HSS, HSS is inserted into the subscription data of UE in the mobile management network element simultaneously with the address registration of MME;

Default APN (the APN that step S404:MME uses according to UE, Access Point Name) selects PGW, send and create default bearer (Create default bearer) request message, send default bearer after PGW sets up and finishes and set up response to SGW, MME to the establishment that SGW carries out default PDN connection;

Step S405:MME returns and adheres to acceptance (Attach Accept) message to UE;

UE ability or registration indication information that step S406:MME carries according to UE among the step S401, and the network architecture is also supported this realization, MME promptly sends register requirement (Register Request) message to S-IWF/IMSC, carries MME sign, UE sign in the message;

Step S407:S-IWF/IMSC sends registration response (Register Response) message to MME and gives MME, carries the UE sign in the message;

Step S408:MME sends and upgrades position requests (Update Location Request) message to HSS, carries the APN and the PGW address information of the default PDN connection of UE use in the message;

Step S409:HSS preserves APN and the PGW address information that UE uses, and home position upgrades response message (Update Location Response) to MME.

Fig. 7 shows the 5th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, in the attaching process that subscriber equipment is initiated, can be by MME to MSC registration MME sign and/or UE sign, thereby when switching, judge whether there are Internet resources in the EUTRAN network according to the MME sign for network; When there are not the Internet resources of UE in the MSC judgement, UE initiates to adhere to request according to the mobile management entity of the network insertion indication information in the flow chart 3 in the EUTRAN network, finished the network insertion of UE and set up new Internet resources by the mode in the flow chart, thereby set up new Internet resources and finish the professional switching of SR VCC in the EUTRAN network, concrete steps are as follows:

Step S501:UE sends and adheres to request (Attach Request) message to MME, carries SR VCC ability or other any registration indication informations that can indicate MME to be registered to S-IWF/IMSC of UE in this message;

Carry out authentication (Authentication) flow process between step S502:UE, mobile management network element, the HSS;

Executing location is upgraded and insertion subscription data (UpdateLocation and Insert Subscriber Date) flow process between step S503:MME and the HSS, in HSS, HSS is inserted into the subscription data of UE in the mobile management network element simultaneously with the address registration of MME;

UE ability or registration indication information that step S504:MME carries according to UE among the step S501, and the network architecture is also supported this realization, MME promptly sends register requirement (Register Request) message to S-IWF/IMSC, carries MME sign, UE sign in the message;

Step S505:S-IWF/IMSC sends registration response (Register Response) message to MME and gives MME, carries the UE sign in the message;

Default APN (the APN that step S506:MME uses according to UE, Access Point Name) selects PGW, send and create default bearer (Create default bearer) request message, send default bearer after PGW sets up and finishes and set up response to SGW, MME to the establishment that SGW carries out default PDN connection;

Step S507:MME returns and adheres to acceptance (Attach Accept) message to UE;

Step S508:MME sends and upgrades position requests (Update Location Request) message to HSS, carries the APN and the PGW address information of the default PDN connection of UE use in the message;

Step S509:HSS preserves APN and the PGW address information that UE uses, and home position upgrades response message (Update Location Response) to MME.

Fig. 8 shows the 6th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, when being attached to the EUTRAN network, network side accepts to inform in the message UE network side ability adhering to, the user is according to network side ability decision initiation circuit domain register flow path, UE is registered among the SIWF/IMSC, be registered to MME among the S-IWF/IMSC simultaneously and set up new Internet resources, thereby when switching, judge whether there are Internet resources in the EUTRAN network according to the MME sign for network; UE initiates to adhere to request according to the mobile management entity of the network insertion indication information in the flow chart 3 in the EUTRAN network, finished the network insertion of UE by the mode in the flow chart, thereby set up new Internet resources and finish the professional switching of SR VCC in the EUTRAN network, concrete steps are as follows:

Step S601:UE sends and adheres to request (Attach Request) message to MME;

Carry out authentication (Authentication) flow process between step S602:UE, mobile management network element, the HSS;

Executing location is upgraded and insertion subscription data (UpdateLocation and Insert Subscriber Date) flow process between step S603:MME and the HSS, in HSS, HSS is inserted into the subscription data of UE in the mobile management network element simultaneously with the address registration of MME;

Default APN (the APN that step S604:MME uses according to UE, Access Point Name) selects PGW, send and create default bearer (Create default bearer) request message, send default bearer after PGW sets up and finishes and set up response to SGW, MME to the establishment that SGW carries out default PDN connection;

Step S605:MME sends to adhere to and accepts Attach Accept message to UE, carry network side in the message and distribute the SR VCC ability of GUTI and TAI list and network side support or indication information, the CS container that indication UE initiates the CS register flow path to UE, wherein: CS container cell comprises that UE is registered to the information of SIWF/IMSC needs, as location area information and position updating type information etc.);

Step S606:MME sends and upgrades position requests (Update Location Request) message to HSS, carries the APN and the PGW address information of the default PDN connection of UE use in the message;

Step S607:HSS preserves APN and the PGW address information that UE uses, and home position upgrades response message (Update Location Response) to MME;

Step S608:UE receives the SR VCC ability that network side is supported or indicates UE to initiate the indication information of CS register flow path in step S605, in conjunction with the UE self-ability, if UE also has SR VCC traffic handing capacity, then UE sends tracing section updating request (TAU Request) message, comprise GUTI in the message, last visited TAI, Update Type, wherein Update Type indicates the CS registration or carries a new cell and indicate MME to replace UE to carry out the CS registration, can know and UE need be registered among the SIWF/IMSC by this indication MME;

After step S609:MME receives the TAU request, according to Update Type is the cell that the CS registration is carried out in CS registration or newly-increased indication, then the position according to UE is that UE selects a S-IWF/IMSC, MME sends register requirement (Register Request) to S-IWF/IMSC, carries UE sign and MME sign and CS container;

Step S610:S-IWF/IMSC sends position updating request (Update Location) to HSS, carries S-IWF/IMSC address, UE sign in the message;

Step S611:HSS loopback location is upgraded response (Update Location Ack) and is given SIWF/IMSC;

Step S612:SIWF/IMSC sends Register Response message to MME, and carrying SIWF/IMSC in the message is the temporary mark that UE distributes, and the temporary mark item of this UE is optional;

Step S613:MME sends tracing section updating request (TAU Accept) message and gives UE, and carrying SIWF/IMSC is the temporary mark that UE distributes.

Fig. 9 shows the 7th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, because UE moves, cause the MME of service UE to change, need this moment up-to-date MME identification renewal in SIWF/IMSC, to guarantee that SIWF/IMSC can get access to up-to-date MME information, thereby guarantee the information of SIWF/IMSC according to up-to-date MME, know whether UE exists Internet resources in the EUTRAN network, the mobile management entity of source sends to the target side mobile management entity with the sign of mobile switching centre, mobile management entity sign and/or customer equipment identification that the target side mobile management entity upgrades to described mobile switching centre according to described mobile switching centre sign, concrete steps are as follows:

Step S701: owing to the new tracking area that moved to of UE, UE sends tracing section updating request (TAU Request) and gives target side mobile management network element MME;

Step S702: the MME of target side sends context request (Context Request) to source MME, request user's contextual information;

Step S703: the contextual information that source MME is relevant with this UE brings target side MME by context response (ContextResponse) message, wherein carries the SIWF/IMSC address information in the context;

Step S704:UE, target side MME, HSS carry out authentication;

Step S705: after target side MME receives context, send context and reply (Context Ack) to source MME;

Step S706: target side MME receives SIWF/IMSC information in step S704, judge the contextual information that needs to upgrade this user among the SIWF/IMSC, then send position updating request (UpdateLocation) message, carry UE sign and SIWF/IMSC address in the message, this step lost efficacy for fear of the mobile information of SIWF/IMSC that causes of UE;

After step S707:SIWF/IMSC receives location update message, upgrade the MME information of UE, send the position simultaneously and upgrade response (Update location Ack) message, carry the UE sign in the message to target side MME;

Step S708: target side MME and HSS carry out position more new technological process and insertion subscription data flow process;

Step S709: target side MME sends tracing section updating and accepts (TAU Accept) message to UE.

Figure 10 shows the 8th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, because UE moves, cause the SIWF/IMSC of service UE to change, the MME information that need be associated UE this moment is delivered among the next SIWF/IMSC, it is the temporary mark of user equipment allocation that target side SIWF/IMSC receives source SIWF/IMSC, temporary mark according to described acquisition obtains mobile management entity sign and/or customer equipment identification in source SIWF/IMSC, target side SIWF/IMSC upgrades mobile switching centre's sign according to mobile management entity sign that obtains and/or customer equipment identification to mobile management entity, to guarantee that SIWF/IMSC can get access to MME information, thereby guarantee the information of SIWF/IMSC according to MME, know whether UE exists Internet resources in the EUTRAN network, concrete steps are as follows:

Step S801:UE moves to new SIWF/IMSC service area, initiates position updating request (Location Update Request) then, carries temporary mark TMSI, Location Area Identification of position updating type location update type, UE etc. in the message;

Step S802: target side SIWF/IMSC finds old side SIWF/IMSC according to TMSI, and concurrent serving hereinafter asks (Context Request) to source SIWF/IMSC, obtains the contextual information of UE, carries old TMSI in the message;

Step S803: source SIWF/IMSC sends context response (Context Response) message, carries the MME sign of previous service-user in the message;

Step S804: target SIWF/IMSC sends position updating request (Update Location Request) to MME, carries UE sign and SIWF/IMSC sign;

Step S805:MME sends the position renewal and replys (Update Location Ack) to SIWF/IMSC, carries UE sign and MME sign in the message;

Carry out position renewal, canceling position and insertion subscription data flow process between step S806: target side SIWF/IMSC, source SIWF/IMSC and the HSS;

Step S807: target side SIWF/IMSC sends the position and upgrades and accept message to UE, carries the information such as temporary mark TMSI that lane place LA, network side distribute to UE in the message.

Figure 11 shows the 9th flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, MME initiates the flow process of separates UE, deletion SGW and PGW go up the bearer context information of UE, this moment, MME will notify SIWF/IMSC, UE is in the deleted information of EUTRAN Internet resources, cancellation MME is at the log-on message of SIWF/IMSC, thereby when guaranteeing to switch, SIWF can know whether network side exists the resource of UE at the EUTRAN network according to the log-on message that has or not MME, here, not only MME initiates the attachment removal flow process, MME also needs to register its information at SIWF/IMSC, and UE and HSS initiate remove register flow path the time, MME need go to register its information at SIWF/IMSC equally, as MME sign and/or UE sign, concrete steps are as follows:

Step S901: if MME initiates explicit attachment removal flow process, then MME sends detach request (Detach Request) and gives UE, carries Detach Type in the message;

Step S902:MME sends deleting bearing request (Delete bearer request) message and gives SGW, carries Tunnel Identifier TEID in the message;

Step S903:SGW sends deleting bearing request (Delete bearer request) message and gives PGW, carries Tunnel Identifier TEID in the message;

Step S904:PGW sends deleting bearing response (Delete bearer response) message and gives SGW, carries Tunnel Identifier TEID in the message;

Step S905:SGW sends deleting bearing response (Delete bearer response) message and gives MME, carries Tunnel Identifier TEID in the message;

Step S906: because UE all deletes at the bearing resource of EUTRAN network, MME sends cancel register request message (cancel registration request) message and gives SIWF/IMSC, carries UE sign and MME sign in the message;

Step S907:SIWF/IMSC sends cancel register response (cancel registration response) message and gives MME, informs that the MME cancel register finishes, and carries the UE sign in the message;

Step S908:UE sends attachment removal and accepts to MME.

Figure 12 shows the tenth flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, all be saved in the MME of this UE and the log-on message of SIWF/IMSC among the HSS, when SR VCC user after the resource of EUTRAN network is deleted and network side support SR VCC function, then MME need notify HSS, this user's bearing resource is released, HSS can notify this UE of SIWF/IMSC to be released at the Internet resources of EUTRAN, and concrete steps are as follows:

Step 1001: if Mobility Management Entity MME initiates explicit attachment removal flow process, then MME sends detach request (Detach Request) and gives UE, carries Detach Type in the message;

Step 1002:MME sends deleting bearing request (Delete bearer request) message and gives SGW, carries Tunnel Identifier TEID in the message;

Step 1003:SGW sends deleting bearing request (Delete bearer request) message and gives PGW, carries Tunnel Identifier TEID in the message;

Step 1004:PGW sends deleting bearing response (Delete bearer response) message and gives SGW, carries Tunnel Identifier TEID in the message;

Step 1005:SGW sends deleting bearing response (Delete bearer response) message and gives MME, carries Tunnel Identifier TEID in the message;

Step 1006: Mobility Management Entity MME is after the deletion of UE bearing resource, send bearing resource deletion Indication message (Delete bearer delete indication), carry UE sign and MME sign in the message, be released at the bearing resource of EUTRAN network by this UE of this message informing HSS;

After step 1007:HSS receives this message, send deleting load-bearing indication response message (Delete bearerdelete indication ack) and give MME, carry the UE sign in the message, need to prove, this step also can be carried out in step 1009 back;

Step 1008:HSS sends bearing resource deletion indication (Delete bearer delete indication) and gives SIWF/IMSC, carries the MME sign in the message and/or the UE sign is informed SIWF/IMSC, and UE is deleted at the bearing resource of EUTRAN network;

Step 1009:SIWF/IMSC sends bearing resource deletion indication and replys (Delete bearer deleteindication ack) to HSS, carries the UE sign in the message;

Step 1010:UE sends attachment removal and accepts to MME.

Figure 13 shows the 11 flow chart of the professional switching handling method of SR VCC in the embodiment of the invention, if behind the related resource and information deletion of UE in SIWF/IMSC, the MME information that needs the serving MME that this UE among this change notification SIWF/IMSC is relevant, in order to avoid follow-up MME sends message to SIWF/IMSC at this UE, make the mistake, concrete steps are as follows:

Step S1101: the user is because shutdown or other mistakes cause the resource of UE in SIWF/IMSC deleted;

Step S1102:SIWF/IMSC sends resource deletion indication (ResourceDeletion Ind) to MME according to the contextual information of UE, carries MME sign and/or UE sign in the message;

Step 1103:MME sends deleting bearing request (Delete Bearer request) to SGW, and deletion SGW goes up the bearer context information of UE, carries TEID in the message;

Step S1104:SGW sends deleting bearing request (Delete Bearer request) to PGW, and deletion PGW goes up the bearer context information of UE, carries TEID in the message;

Step S1105:PGW sends deleting bearing response (Delete Bearer Response) to SGW, carries TEID in the message;

Step S1106:SGW sends deleting bearing response (Delete Bearer Response) to MME, carries TEID in the message;

Step S1107:MME sends detach request to UE, carries Detach Type in the message;

Step S1108:UE sends Detach Accept message to MME.

Need to prove that described step S1107 is optional to step S1108, if the MME initiation is implicit detach, then this step does not exist.

Flow process in the professional switching handling method of SR VCC has been described among Fig. 3 to Figure 13, Figure 14 shows the system construction drawing of the professional hand-off process of SR VCC in the embodiment of the invention, this system has comprised UE, UTRAN/GERAN network, MSC, contains functional entity, MME, HSS, SGW, the PGW etc. of guaranteed voice business continuity among the MSC of described EUTRAN network.

When UE switches to the EUTRAN network by the UTRAN/GERAN network, send measurement report to the UTRAN/GERAN network, and receive network insertion indication information indication UE that SIWF/IMSC returns and in the EUTRAN network, insert again and create new Internet resources and finish SR VCC business.Described UE sends the registration indication information to MME in the attaching process of initiating, indication MME registers MME sign and/or UE sign in MSC, perhaps initiate the CS registration process, and indication MME identifies and/or the UE sign to MSC registration MME in the CS registration process.Described UE is in the process that moves, when residing position changes, when the MME of service UE or MSC change, initiate the tracking area position requests to the MME of target side, or to the MSC of target side transmission position updating request, the MME information that subscriber equipment is associated can update among the MSC.Before the network switching took place, UE can identify the mobile switching centre that sends to described EUTRAN network with the GUTI value of UE or according to the MME that GUTI is worth going out.

The mobile switching centre of measurement report in the EUTRAN network that the network based subscriber equipment of described GERAN/UTRAN sends sends handover preparation request, and participates in relevant switching preparation.

Mobile switching centre is after the subscriber equipment that receives the transmission of GERAN/UTRAN network is prepared to switch to the handover preparation request of EUTRAN network by the GERAN/UTRAN network, judge the Internet resources that whether have subscriber equipment in the EUTRAN network according to the MME information that the handover preparation request and the UE of described reception is associated, and carry out the professional hand-off process of SR VCC for subscriber equipment according to the result who judges.Concrete deterministic process can be that if there is MME information among the MSC, then there are the Internet resources of UE in expression; Perhaps send the bearing resource query requests to pairing MME according to MME information, judge whether to exist the Internet resources of UE according to the bearing resource inquiry response that returns, if the bearing resource inquiry response that returns contains the relevant network resource information of UE, then there are the Internet resources of UE in expression.If judge that MSC then sends the network insertion indication information to subscriber equipment, sets up new Internet resources for subscriber equipment, finishes SR VCC Business Processing when not having the Internet resources of subscriber equipment in the EUTRAN network; If judge when having the Internet resources of subscriber equipment in the EUTRAN network, then finish the SRVCC hand-off process and get final product according to the Internet resources of UE.SIWF/IMSC can receive the MME sign and/or the UE sign of UE registration when UE carries out network insertion and sets up the bearing resource process; Described SIWF/IMSC obtained the GUTI value of UE or the MME sign that is worth going out according to GUTI from UE before the processing that switching; When described subscriber equipment switches to the GERAN/UTRAN network by the EUTRAN network, receive mobile management entity sign and/or customer equipment identification that mobile management entity carries in transmitting the handoff request process; When UE in moving process, the mobile management entity of service-user equipment changes, and when changing to second mobile management entity by first mobile management entity, receives described second mobile management entity and upgrades mobile management entity sign and/or customer equipment identification; When move the position of UE, residing mobile switching centre changes, when changing to second mobile switching centre by first mobile switching centre, second mobile switching centre obtains the mobile management entity sign and/or the customer equipment identification of described first mobile switching centre association from first mobile switching centre.In preparing the process of switching, MSC identifies the address information that can obtain MME according to GUTI value or the MME of UE, thereby send the bearing resource inquiry to MME, in described mobile management entity, search the Internet resources that whether have described subscriber equipment, by whether there being the Internet resources of subscriber equipment in the described inquiry judging EUTRAN network; Perhaps SIWF/IMSC can judge the Internet resources that whether have subscriber equipment in the network by the MME information that inquiring user equipment is associated.After the Internet resources of UE in SIWF/IMSC were deleted, SIWF/IMSC sent resource deletion indication to other network elements in the EUTRAN network, and other network elements are according to the Internet resources of described resource deletion indication deletion UE; Or the Internet resources of the bearing resource deletion indication information deletion UE that sends according to MME.

MME, HSS, SGW, PGW etc. set up new Internet resources for described UE according to the network insertion indication information that described SIWF/IMSC sends, and finish the professional switching of SR VCC.MME wherein is that subscriber equipment is that described subscriber equipment is set up bearing resource according to the network insertion indication information, be registered user's device identification and mobile management entity sign and/or customer equipment identification in the mobile switching centre of subscriber equipment in the EUTRAN network, and after MME changes, send the MME information of upgrading to MSC; Mobile switching centre in HSS and described mobile management entity or the EUTRAN network carries out information interaction, obtains the network resource information of subscriber equipment; SGW and PGW participate in attachment flow or attachment removal flow process, set up corresponding bearer resource for UE in network in attachment flow, or delete the bearing resource of UE in network in the attachment removal flow process.

Figure 15 shows the structural representation of the mobile switching centre in the embodiment of the invention, the functional entity that contains guaranteed voice business continuity in the described mobile switching centre, comprise first receiver module 152, judge module 153 and handover module 154, wherein: first receiver module 152 is used to receive subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network handover preparation request; Judge module 153 is used for judging according to the handover preparation request and the mobile management entity information of described first receiver module reception 152 whether the EUTRAN network exists the Internet resources of subscriber equipment; Handover module 154 is used for judging whether to exist the result of the Internet resources of subscriber equipment to carry out that SR VCC is professional to be switched according to judge module.Accordingly, also be provided with in the described mobile switching centre and obtain module 151, second receiver module 155, removing module 157 and sending module 156, wherein: obtain module 151 and be used to obtain the mobile management entity information that subscriber equipment is associated, wherein the mobile management entity information of Huo Deing can be obtained by judge module 152, and judge module 152 judges whether to exist the Internet resources of subscriber equipment according to the mobile management entity information of described acquisition; Second receiver module 155 is used for receiving the bearing resource removal request that mobile management entity sends after mobile management entity is initiated the attachment removal process; The mobile management entity information that the bearing resource removal request deletion subscriber equipment that removing module 156 is used for receiving according to second receiver module 157 is associated; Sending module 156 is used for after the mobile management entity information that subscriber equipment is associated is deleted, sends resource deletion indication to mobile management entity.

Accordingly, Figure 16 shows the structural representation of judge module in the embodiment of the invention, be provided with transmitting element 161, receiving element 162 and first judging unit 163 in the described judge module 153, wherein: transmitting element 161 is used for sending the bearing resource inquiry according to the mobile management entity information that obtains in the acquisition module 151 to described mobile management entity after receiving the handover preparation request that first receiver module 152 receives; Receiving element 162 is used to receive the bearing resource Query Result that described mobile management entity returns; First judging unit 163 is used for judging according to the bearing resource Query Result that returns that described receiving element 162 receives whether the EUTRAN network exists the Internet resources of subscriber equipment, if the Internet resources of subscriber equipment are arranged in the bearing resource Query Result that returns, then judge the Internet resources that have subscriber equipment in the described network, otherwise do not have the Internet resources of subscriber equipment.Accordingly, also be provided with second judging unit 164 in the judge module 153, described second judging unit 164 can judge whether to exist the Internet resources of subscriber equipment according to the mobile management entity information that whether exists subscriber equipment to be associated among the SIWF/IMSC, if there is mobile management entity information, the Internet resources that then have subscriber equipment, otherwise do not have the Internet resources of subscriber equipment.

Accordingly, Figure 17 shows the structural representation of handover module in the embodiment of the invention, be provided with first handover module 171 and second handover module 172 in the described handover module 154, wherein: first switch unit 171 is used for when judge module 153 judges that there are the Internet resources of subscriber equipment in described EUTRAN network, is that subscriber equipment carries out the professional switching of SR VCC according to described Internet resources; Second switch unit 172 is used for when judge module 153 judges that there are not the Internet resources of subscriber equipment in described EUTRAN network, send the network insertion indication information to subscriber equipment, initiate attaching process at described subscriber equipment according to described network insertion indication information, be after described subscriber equipment is set up new Internet resources, to be that subscriber equipment carries out the SRVCC business in the EUTRAN network according to newly-established Internet resources.

Accordingly, Figure 18 shows the structural representation that obtains module in the embodiment of the invention, described acquisition module 151 comprises that the first acquisition unit 181, second obtains unit the 182, the 3rd and obtains unit 183 or the 4th acquisition unit 184, and wherein: first obtains unit 181 is used for obtaining mobile management entity sign and/or the customer equipment identification that subscriber equipment is registered in the initiation registration process; Second obtains unit 182 is used for working as subscriber equipment at moving process, the mobile management entity of service-user equipment changes, when changing to second mobile management entity by first mobile management entity, receive second mobile management entity sign and/or customer equipment identification that described second mobile management entity sends, or be used for when described subscriber equipment switches to the GERAN/UTRAN network by the EUTRAN network, receive mobile management entity sign and/or customer equipment identification that mobile management entity carries in transmitting the handoff request process; The 3rd obtains unit 183 is used for working as subscriber equipment at moving process, residing mobile switching centre changes, when changing to second mobile switching centre by first mobile switching centre, second mobile switching centre obtains the mobile management entity sign and/or the customer equipment identification of described first mobile switching centre association from first mobile switching centre; The 4th obtains unit 184 is used to receive globally unique identifier's value of subscriber equipment transmission or mobile management entity sign and/or the customer equipment identification that is worth going out according to described globally unique identifier.

Figure 19 shows the structural representation of the mobile management entity in the embodiment of the invention, comprise first receiver module 191 and Registering modules 192 among this MME, wherein: first receiver module 191 is used to receive registration indication information or the circuit domain log-on message that subscriber equipment is initiated; The log-on message that Registering modules 192 is used for receiving according to first receiver module is to mobile switching centre's registration mobile management entity sign and/or customer equipment identification.Accordingly, described mobile management entity also includes first sending module 193, second receiver module 194, the first attachment removal unit 195, and wherein: first sending module 193 is used for sending the bearing resource removal request to mobile switching centre; Second receiver module 194 is used to receive the resource removal request that mobile switching centre sends; The first attachment removal unit 195 is used for initiating the attachment removal process according to the resource removal request that second receiver module 194 receives.

Figure 20 shows another structural representation of the mobile management entity in the embodiment of the invention, comprise second sending module 201 among this MME, described second sending module 201 is used for sending mobile management entity information to mobile switching centre, and described mobile management entity information comprises mobile management entity sign and/or customer equipment identification.Accordingly, described mobile management entity also includes the 3rd sending module 202, the 3rd receiver module 203, the second attachment removal unit 204, and wherein: the 3rd sending module 202 is used for sending the bearing resource removal request to mobile switching centre; The 3rd receiver module 203 is used to receive the resource removal request that mobile switching centre sends; The second attachment removal unit 204 is used for initiating the attachment removal process according to the resource removal request that the 3rd receiver module 203 receives.

Need to prove that the functional entity of MME can be positioned on the same MME among Figure 20 and Figure 19, can send the information of MME to MSC according to the residing different situations of MME.

Figure 21 shows the structural representation of the subscriber equipment in the embodiment of the invention, be provided with transmitting element 211 in the described subscriber equipment, described transmitting element 211 is used for sending the registration indication information to mobile management entity, and the indication mobile management entity is to mobile switching centre's registration mobile management entity sign and/or customer equipment identification.Described transmitting element 211 sends indication information and is: the control channel between IMS domain and circuit domain sends to mobile switching centre with globally unique identifier's value of subscriber equipment or according to mobile management entity sign and/or customer equipment identification that described globally unique identifier is worth going out.Can there be above-mentioned two kinds of functional entitys in the subscriber equipment simultaneously, send information to corresponding apparatus according to the different situations of subscriber equipment.

In sum, by the method that provides in the embodiment of the invention, when subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network, after the target side network judged whether this subscriber equipment exists the Internet resources situation, the result who judges according to the objective network side carried out the professional hand-off process of SR VCC.If when having the user equipment network resource, then direct Internet resources according to subscriber equipment switch; Otherwise, after there are not the Internet resources of subscriber equipment in judgement, then send the network insertion indication information to subscriber equipment, subscriber equipment is set up new Internet resources according to described network insertion indication information in the EUTRAN network, and finished according to setting up new Internet resources that SR VCC is professional to be switched, by the realization of said method, finished the Internet resources in the EUTRAN network have been judged, and under the Internet resources situation of judging subscriber equipment, can guarantee the voice continuity of subscriber equipment.When UE initiates to adhere to request back access network and sets up new Internet resources, MME information is registered among the SIWF/IMSC, when this UE when the resource of LTE network is eliminated, MME initiatively cancels it and is registered in MME information among the S-IWF; When changing, the SIWF/IMSC of service UE also needs in time MME information to be notified to the SIWF/IMSC of service UE.When UE switches to the EUTRAN network by the GERAN/UTRAN network like this, thereby S-IWF is by judging whether to exist the serving MME information of this UE to judge whether target EUTRAN network exists the Internet resources of this UE.If there are MME information in S-IWF or IMSC, perhaps S-IWF or IMSC send the carrying query requests to MME, inquire the EUTRAN network when having user's Internet resources, represent that then there are the Internet resources of UE in the EUTRAN network, otherwise then do not have the Internet resources of UE.By MME is registered among the SIWF/IMSC, (UE is after deletion of EUTRAN Internet resources or UE separation, MME need go registration), so S-IWF/IMSC can know whether UE exists Internet resources at the EUTRAN network, thereby when switching, adopt different processing methods, reduce interacting message, reduce handover delay.

Above disclosed only is some preferred embodiments in the embodiment of the invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims (22)

1. professional switching handling method of single connecting system voice continuity SR VCC is characterized in that this method comprises:

When subscriber equipment when the GERAN/UTRAN network switches to the EUTRAN network, receive the handover preparation request that subscriber equipment sends;

Handover preparation request and mobile management entity information according to described reception are judged the Internet resources that whether have subscriber equipment in the EUTRAN network;

SR VCC is professional to be switched for subscriber equipment carries out according to the result of the Internet resources that judge whether to exist subscriber equipment, comprising:

When in judging described EUTRAN network, having the Internet resources of subscriber equipment, be that subscriber equipment carries out the professional switching of SR VCC according to described Internet resources,

When in judging described EUTRAN network, not having the Internet resources of subscriber equipment, send the network insertion indication information to subscriber equipment, described subscriber equipment is initiated attaching process according to described network insertion indication information, in the EUTRAN network, set up new Internet resources, and be that subscriber equipment carries out SR VCC business according to newly-established Internet resources for described subscriber equipment.

2. the method for claim 1 is characterized in that, in judging described EUTRAN network, whether have the Internet resources of subscriber equipment before, described method comprises:

Obtain the mobile management entity information that subscriber equipment is associated.

3. method as claimed in claim 2 is characterized in that, the mobile management entity information that described acquisition subscriber equipment is associated is specially:

Obtain mobile management entity sign and/or customer equipment identification that subscriber equipment is registered in initiating attaching process.

4. method as claimed in claim 3 is characterized in that, mobile management entity sign and/or customer equipment identification step that described acquisition subscriber equipment is registered in initiating attaching process are specially:

The described mobile management entity of indication that mobile management entity reception subscriber equipment sends is registered to the registration indication information of mobile switching centre;

Mobile management entity identifies and/or customer equipment identification to mobile switching centre's registration mobile management entity according to the registration indication information of described reception.

5. method as claimed in claim 2 is characterized in that, the mobile management entity information that described acquisition subscriber equipment is associated is specially:

Receive the mobile management entity sign and/or the customer equipment identification of subscriber equipment service-user in initiating the circuit domain registration process.

6. method as claimed in claim 5 is characterized in that, the mobile management entity sign and/or the customer equipment identification step of described reception subscriber equipment service-user in initiating the circuit domain registration process are specially:

Mobile management entity sends the indication information that the indication subscriber equipment is initiated the circuit domain registration process to subscriber equipment;

Subscriber equipment is initiated the circuit domain registration process according to described indication information, and mobile management entity identifies and/or customer equipment identification to mobile switching centre's registration mobile management entity in described circuit domain registration process.

7. method as claimed in claim 2 is characterized in that, the mobile management entity information that described acquisition subscriber equipment is associated is specially:

When subscriber equipment in moving process, when the mobile management entity of service-user equipment changes to second mobile management entity by first mobile management entity, receive described second mobile management entity information and upgrade mobile management entity sign and/or customer equipment identification.

8. method as claimed in claim 7 is characterized in that, described second mobile management information updating mobile management entity sign of described reception and/or customer equipment identification step are specially:

First mobile management entity sends to second mobile management entity with the sign of mobile switching centre;

Second mobile management entity upgrades mobile management entity sign and/or customer equipment identification according to described mobile switching centre sign to described mobile switching centre.

9. method as claimed in claim 2 is characterized in that, the mobile management entity information step that described acquisition subscriber equipment is associated is specially:

When subscriber equipment in moving process, when changing to second mobile switching centre by first mobile switching centre, second mobile switching centre obtains the mobile management entity sign and/or the customer equipment identification of described first mobile switching centre association from first mobile switching centre.

10. method as claimed in claim 9 is characterized in that, described second mobile switching centre is specially from mobile management entity sign and/or the customer equipment identification step that first mobile switching centre obtains the association of described first mobile switching centre:

Second mobile switching centre receives the temporary mark that first mobile switching centre is a user equipment allocation, obtains mobile management entity sign and/or customer equipment identification according to the temporary mark of described acquisition in first mobile switching centre;

Second mobile switching centre upgrades mobile switching centre's sign according to mobile management entity sign that obtains and/or customer equipment identification to mobile management entity.

11. method as claimed in claim 2 is characterized in that, the mobile management entity information step that described acquisition subscriber equipment is associated is specially:

Before subscriber equipment switches to the EUTRAN network from the GERAN/UTRAN network, when described subscriber equipment switches to the GERAN/UTRAN network by the EUTRAN network, receive mobile management entity sign and/or customer equipment identification that mobile management entity carries in transmitting the handoff request process.

12. method as claimed in claim 2 is characterized in that, the mobile management entity information step that described acquisition subscriber equipment is associated is specially:

Receive the global unique temporary identity value of subscriber equipment transmission or mobile management entity sign and/or the customer equipment identification that is worth going out according to described global unique temporary identity.

13. method as claimed in claim 12 is characterized in that, the global unique temporary identity value that described reception subscriber equipment sends or be specially according to mobile management entity sign and/or customer equipment identification step that described global unique temporary identity is worth going out:

Subscriber equipment sends to mobile switching centre by the control channel between IMS territory and circuit domain with the global unique temporary identity value of subscriber equipment or according to mobile management entity sign and/or customer equipment identification that described global unique temporary identity is worth going out.

14. whether the method for claim 1 is characterized in that, exist the Internet resources of subscriber equipment to be specially in the described EUTRAN network:

After the Internet resources in the EUTRAN network of subscriber equipment place are deleted, receive the bearing resource removal request that mobile management entity sends;

According to the mobile management entity information that described bearing resource removal request deletion subscriber equipment is associated, described mobile management entity information is mobile management entity sign and/or customer equipment identification.

15. whether the method for claim 1 is characterized in that, exist the Internet resources of subscriber equipment to be specially in the described EUTRAN network:

After the mobile management entity information that described subscriber equipment is associated is deleted, send resource deletion indication to mobile management entity, described mobile management entity information is mobile management entity sign and/or customer equipment identification;

Mobile management entity receives described resource deletion indication, and initiates the attachment removal process according to described resource deletion indication.

16. the method for claim 1 is characterized in that, described handover preparation request according to described reception judges that with the mobile management entity information of obtaining the Internet resources step that whether has subscriber equipment in the EUTRAN network is specially:

Send the bearing resource inquiry according to mobile management entity information to described mobile management entity;

Receive the bearing resource Query Result that described mobile management entity returns;

Judge the Internet resources that whether have subscriber equipment in the EUTRAN network according to the described bearing resource Query Result that returns.

17. the method for claim 1 is characterized in that, described handover preparation request according to described reception judges that with the mobile management entity information of obtaining the Internet resources step that whether has subscriber equipment in the EUTRAN network is specially:

Judge whether to exist the Internet resources of subscriber equipment according to the mobile management entity information that whether exists subscriber equipment to be associated.

18. a mobile switching centre is characterized in that, comprising:

First receiver module is used to receive subscriber equipment is prepared to switch to the EUTRAN network by the GERAN/UTRAN network handover preparation request;

Judge module is used for judging according to handover preparation request and mobile management entity information that described first receiver module receives whether the EUTRAN network exists the Internet resources of subscriber equipment;

Handover module is used for judging whether to exist the result of the Internet resources of subscriber equipment to carry out that single connecting system voice continuity SR VCC is professional to be switched according to judge module;

Wherein, described handover module comprises:

First switch unit is used for when judge module judges that there are the Internet resources of subscriber equipment in described EUTRAN network, is that subscriber equipment carries out the professional switching of SRVCC according to described Internet resources;

Second switch unit, be used for when judge module judges that there are not the Internet resources of subscriber equipment in described EUTRAN network, send the network insertion indication information to subscriber equipment, initiate in the attaching process according to described network insertion indication information at described subscriber equipment, be after described subscriber equipment is set up new Internet resources, to be that subscriber equipment carries out the SRVCC business in the EUTRAN network according to newly-established Internet resources.

19. mobile switching centre as claimed in claim 18 is characterized in that, described judge module comprises:

Transmitting element is used for sending the bearing resource inquiry according to mobile management entity information to described mobile management entity;

Receiving element is used to receive the bearing resource Query Result that described mobile management entity returns;

First judging unit is used for judging according to the bearing resource Query Result that returns that described receiving element receives whether the EUTRAN network exists the Internet resources of subscriber equipment.

20. mobile switching centre as claimed in claim 18 is characterized in that, described judge module comprises: second judging unit is used for judging whether to exist according to the mobile management entity information that whether exists subscriber equipment to be associated the Internet resources of subscriber equipment.

21., it is characterized in that described mobile switching centre also comprises as claim 19 or 20 described mobile switching centres:

Obtain module, be used to obtain the mobile management entity information that subscriber equipment is associated;

Second receiver module is used for receiving the bearing resource removal request that mobile management entity sends when mobile management entity is initiated the attachment removal process;

Removing module, the mobile management entity information that the bearing resource removal request deletion subscriber equipment that is used for receiving according to second receiver module is associated;

Sending module is used for after the mobile management entity information that subscriber equipment is associated is deleted, sends resource deletion indication to mobile management entity.

22. mobile switching centre as claimed in claim 21 is characterized in that, described acquisition module comprises:

First obtains the unit, is used for obtaining subscriber equipment and is initiating mobile management entity sign and/or the customer equipment identification that registration process is registered; Perhaps

Second obtains the unit, be used for working as subscriber equipment at moving process, the mobile management entity of service-user equipment changes, when changing to second mobile management entity by first mobile management entity, receive second mobile management entity sign and/or customer equipment identification that described second mobile management entity sends, or be used for when described subscriber equipment switches to the GERAN/UTRAN network by the EUTRAN network, receive mobile management entity sign and/or customer equipment identification that mobile management entity carries in transmitting the handoff request process; Perhaps

The 3rd obtains the unit, be used for working as subscriber equipment at moving process, residing mobile switching centre changes, when changing to second mobile switching centre by first mobile switching centre, second mobile switching centre obtains the mobile management entity sign and/or the customer equipment identification of described first mobile switching centre association from first mobile switching centre; Perhaps

The 4th obtains the unit, is used to receive the global unique temporary identity value of subscriber equipment transmission or mobile management entity sign and/or the customer equipment identification that is worth going out according to described global unique temporary identity.

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