CN101384081B - Method and apparatus for transmitting service anchor positioning information - Google Patents
Method and apparatus for transmitting service anchor positioning information Download PDFInfo
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- CN101384081B CN101384081B CN 200710196808 CN200710196808A CN101384081B CN 101384081 B CN101384081 B CN 101384081B CN 200710196808 CN200710196808 CN 200710196808 CN 200710196808 A CN200710196808 A CN 200710196808A CN 101384081 B CN101384081 B CN 101384081B
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Abstract
The invention discloses a method and a device for transmitting service anchoring dot information, which enables a second mobile management entity (MME) to gain the service anchoring dot information relative to circuit area service. The method comprises the following steps: when a terminal is adhered to a circuit area to carry out the circuit area service and is moved to the service area of the second MME from a first MME to cause the switching to happen, the second MME gains the service anchoring dot information relative to the circuit area service after receiving the switching request. The entity used for mobile management comprises a receiving unit used for receiving the switching request information of services, and a gaining unit used for gaining information relative to the service anchoring dot of the circuit area service after the receiving unit receives the switching request information of services.
Description
Technical field
The present invention relates to the communications field, particularly relate to method and the device of business transferring anchor positioning information.
Background technology
One, the explanation of wireless network evolution architecture.
The core net of wireless evolution network mainly comprises Mobility Management Entity MME (MobilityManagement Entity), service system architecture evolution gateway Serving SAE Gateway (ServingSystem Architecture Evolution Gateway), three logic function bodies of shared data network system architecture evolution gateway PDNSAE Gateway.MME wherein is responsible for the functions such as NAS (non-access service NonAccess Service) signaling and the encryption of NAS signaling and roaming, tracking, distributing user temporary identity sign, safety function etc., it is corresponding to the control plane part of current UMTS (Universal MobileTelecommunication System universal mobile telecommunications system) internal system SGSN (Serving GPRSSupport Node Serving GPRS Support Node).Serving SAE Gateway is responsible for local mobility anchor point and mobility anchor point and the Lawful Interception relevant information of 3GPP internal system; PDN SAE Gateway is responsible for strategy execution and charging and Lawful Interception correlation function.
Two, the explanation of R7 VCC.
Propose continuous voice call VCC (Voice Call Continuity) function in the Release 7 of 3GPP, be used for completing audio call ability of conversion mutually between circuit domain (the circuit Switched CS) system of 3GPP and IP Multimedia System IMS (IP multimedia subsystem) system.The main starting point of the VCC that R7 proposes is covering and the switching problem that will solve mobile communication system and WLAN (wireless local area network) WLAN (wireless local area network), requires UE access mobile communication system and WLAN simultaneously.
Three, the explanation of SR VCC.
And current two connecting systems (being referred to as single access Single Radio UE) that have a lot of UE not support while access mobile communication system, can not access simultaneously 2G CS and 3G PS as this UE, the session condition that remaining on simultaneously between transfer period of therefore requiring in above-mentioned R7 VCC cuts out territory and incision territory can not satisfy.In order to make Single Radio UE also can use the VCC technology, therefore single access Single RadioVCC (SR VCC) technology has been proposed.
For SR VCC, mainly there are at present two kinds of solutions, a kind of is the thought of substantially continuing to use R7 VCC, completes the switching of audio call based on the IMS network; Another kind is based on the CS territory and controls the switching of completing audio call, thereby takes full advantage of the existing CS network of operator, cuts operating costs, and improves networking speed.The SR VCC that CS controls does not repel the use to the IMS network, and its main thought is that different business is provided by two networks, and pure voice class business is still controlled by CS, but not the voice class business is provided by the IMS network.
Complete audio call and switch and comprise again two kinds of subcases in the situation that control based on CS.Subcase one, when UE carries out speech business in the CS network, can adopt the existing mechanism of CS, completed the processing of voice signaling and data by MSC.Subcase two, when UE carries out speech business in the grouping system EPS of evolution (Evolved PacketSystem) network, the EPS carrying is as the passage of voice signaling and data, VoP carries by EPS and sends to PDN SAE GW, send to again the mobile services switching centre eMSC equipment of evolution, by the unified processing of completing voice signaling and data of eMSC.For convenience, after this paper uses " terminal is attached to circuit domain " to describe terminal to be attached to the EPS network, be registered to again the situation of Mobility Management Entity such as the eMSC of circuit domain.
In above-mentioned subcase one, the call business control information all is anchored on (AMSC refers to the mobile services switching centre that the user serves for the user first in call establishment) in grappling AMSC (AnchoringMSC).When the user need to switch to the third party, service area the user of voice call is moved to MSC-B by the service area under MSC-A under just for example, again because mobile reason moves to the affiliated service area of MSC-B ', Here it is follow-uply switches to the third party.Shown in Figure 1, switching flow is as follows:
1, the user carries out audio call at MSC-A, the follow-up service area that switches to MSC-B due to mobile reason.
2, after MSC-B receives handover request message, according to the configuration querying Target cell not in the service area under self.
3, MSC-B sends MAP signaling Map-Prep-Sub-Handover-req message and initiates follow-up handover request to target MSC-A (AMSC).
4, after MSC-A receives follow-up handover request, find that the destination service district belongs in control service area scope under another one MSC, so send to MSC-B ' according to the composition of content Map-Prep-Handover-req message in follow-up handover request message.MSC-B ' preparation resource and speech channel are set up.MSC-A and MSC-B ' keep conversation by interexchange circuit, until end of conversation.Then MSC-A discharges between the two that interexchange circuit discharges relevant Radio Resource simultaneously.
Four, the explanation of CSoPS.
In incumbent operator, existing network is the 2G/3G network, and wherein the PS territory can evolve to the EPS network, and the CS territory is current the most important thing is speech business, but this application can't use in the packet network of evolution, has caused the huge waste of operator's investment.
Therefore, operator has proposed to transmit by evolution packet network the requirement of CS business, i.e. so-called CSDomain Services over evolved PS access (CSoPS).A kind of typical technical solution is referred to as the CSoPS scheme for combining, and this scheme combines the advantage of a plurality of schemes, and supports the smooth evolution between different schemes, thereby can satisfy the demand of different operators, different phase.This scheme Organization Chart as shown in Figure 2.
In this scheme, the MME of EPS network communicates by Z2 interface and MSC/VLR, and the Z2 interface has the similar function of Gs interface; S-GW/PDN-GW is connected to MSC/VLR by the SGi interface; MSC/VLR can also be connected to PCRF by Rx interface as application server; And communicate by the Z1 interface between UE and MSC/VLR.
Wherein the Z2 interface has the similar function of Gs interface, thereby the processing mode of the processing mode between MME and MSC/VLR and Gs interface is also similar, and the mobile management flow process that user's circuit domain is relevant is to realize by the Z2 interface.
In sum, work as terminal in prior art and carry out circuit domain business by the packet field network registers entities to circuit domain, and move to the coverage of the second Mobility Management Entity MME from the coverage of the first Mobility Management Entity MME, thereby when switching (including but not limited to occur the scene that the MME such as the switching of PS business, the switching of CS business, tracing section updating flow process change), due to the transmission that there is no Service Control Unit ADDress information in handoff procedure, thereby may cause service disconnection, the traffic affecting continuity.In prior art for the relevant solution of this scene.
Summary of the invention
The embodiment of the present invention provides method and the device of business transferring anchor positioning information, so that the 2nd MME can obtain the service anchor positioning information relevant to this circuit domain business.Service anchor positioning refers to Business Processing or the relevant entity of mobile management.
The method of a kind of business transferring anchor positioning information of the embodiment of the present invention, comprise the following steps: to carry out circuit domain business when terminal is registered to circuit domain by packet domain, and move to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME, thereby when switching, after the 2nd MME receives handover request, obtain the service anchor positioning information relevant to this circuit domain business.This switching includes but not limited to that the scene that all MME such as the switching of PS business, the switching of CS business, tracing section updating flow process change occurs the user.
A kind of entity for mobile management of the embodiment of the present invention, when being registered to circuit domain by packet domain, terminal carries out circuit domain business, and move to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME, thereby when switching, be used for carrying out obtaining of service anchor positioning information, comprise: receiving element, for the handover request message of reception business; Acquiring unit is used for obtaining the information relevant to the service anchor positioning of this circuit domain business after receiving element is received the handover request message of business.
In method and device due to the embodiment of the present invention, when terminal is carried out circuit domain business by the Mobility Management Entity that packet domain is registered to circuit domain, generation moves to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME, thereby when switching, after the 2nd MME receives handover request, avoided because switch the service disconnection that causes by obtaining the service anchor positioning information relevant to this circuit domain business, promoted user's good experience and the service performance that has increased system.
Description of drawings
Fig. 1 follow-uply in prior art switches to third-party flow chart;
Fig. 2 is the CSoPS Organization Chart that relates in background technology.
Fig. 3 is the method step flow chart of the embodiment of the present invention;
Fig. 4 is the structural representation of the network entity of the embodiment of the present invention;
Fig. 5 is the schematic diagram of a kind of application scenarios of the embodiment of the present invention;
Fig. 6 is the flow chart of the embodiment of the present invention one;
Fig. 7 is the flow chart of the embodiment of the present invention three;
Fig. 8 is the flow chart of the embodiment of the present invention four.
Fig. 9 is the flow chart of the embodiment of the present invention five.
Figure 10 is the flow chart of the embodiment of the present invention six.
Embodiment
in order to make the 2nd MME can obtain the service anchor positioning information relevant to this circuit domain business, the embodiment of the present invention provides method and the device of business transferring anchor positioning information, can be applicable to but be not limited to: UE is by in the Mobility Management Entity that is registered to circuit domain in packet field network, generation moves to the coverage of the 2nd MME from the coverage of a MME, thereby when switching, the 2nd MME need to obtain the scene of the service anchor positioning information relevant to CS business (the main finger speech sound business of described CS business but be not limited to speech business), and then can be applicable to the coverage that terminal is left the 2nd MME, when again switching, grappling CS business and make the 2nd MME can be by circuit domain Mobility Management Entity such as MSC or the eMSC of Z2 interface conjunctionn to user registration, perhaps be applied to the WIMAX network, scene is constant, and just network element changes to some extent.
One, the method for a kind of business transferring anchor positioning information of the embodiment of the present invention, shown in Figure 3, comprises following key step:
S1, terminal are registered to the Mobility Management Entity of circuit domain by the Mobility Management Entity of packet domain, and move to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME, thereby switch.
After S2, the 2nd MME receive handover request, obtain the service anchor positioning information relevant to circuit domain business.
Wherein, the decision condition that need to obtain described service anchor positioning information includes but not limited to: described terminal is the VCC terminal, and there is circuit domain voice dedicated bearing in this terminal; MME changes but the Mobility Management Entity of the circuit domain of user's registration does not change.
Wherein, the mode that the 2nd MME obtains described service anchor positioning information comprises: mode one, described service anchor positioning information by a MME with the reciprocal process of service anchor positioning in collect, and transmit with described handover request interaction message; Perhaps, mode two, by a MME with the reciprocal process of special network element in collect, and transmit with both mutual described handover request message, described special network element is for can be forwarded to handover request message the network element of service anchor positioning; Perhaps, mode three, collected from the configuration information of this side network element by a MME, and transmit with described handover request message; Perhaps, mode four, collected from belong to signing register HSS by a MME, and with both the interaction message transmission of described handover request; Perhaps, mode five, directly collected from belong to signing register HSS by the 2nd MME.
Wherein, described service anchor positioning information is arbitrary information that can navigate to service anchor positioning; Perhaps be arbitrary information that can navigate to special network element, described special network element is for can be forwarded to handover request message the network element of service anchor positioning.For example: address information and/or source tracking area identification OLD TA ID; Perhaps (such as address information, VLR Visitor Location Register VLR Number or Z2 interface conjunctionn indication information of the mobile services switching centre MSC of user's registration etc., this information can be also the combination of above-mentioned one or more information for the relevant information of the relevant Mobility Management Entity of the circuit domain of user registration.Further also can comprise:
S3, leave the coverage of the 2nd MME when terminal, when again switching, after the one MME or this third party of switching sensing receive handover request message, obtain the service anchor positioning information relevant to circuit domain business, and the processing of this circuit domain business being correlated with according to the described service anchor positioning information that obtains.
Wherein, the decision condition that need to obtain described service anchor positioning information includes but not limited to: described terminal is the VCC terminal, and there is circuit domain voice dedicated bearing in this terminal; MME changes but the Mobility Management Entity of the circuit domain of user's registration does not change.
Wherein, a MME or this switch the mode that the third party who points to obtains described service anchor positioning information and include but not limited to: obtain from the handover request message of receiving, perhaps directly collect from HSS.
Wherein, described service anchor positioning information is arbitrary information that can navigate to service anchor positioning; Perhaps be arbitrary information that can navigate to special network element, described special network element is for can be forwarded to handover request message the network element of service anchor positioning; Perhaps (such as the address information of (e) MSC of user's registration, VLR Number, Z2 interface conjunctionn indication information etc., this information can be the combination of above-mentioned one or more information for the relevant information of the relevant Mobility Management Entity of the circuit domain of user registration.
Wherein, describedly this business is carried out the processing relevant to grappling include but not limited to: the handover request message of described business is forwarded to service anchor positioning carries out grappling, perhaps carry out the grappling of described business, perhaps carry out the relevant mobile management operation of circuit domain.
Two, a kind of entity for mobile management of the embodiment of the present invention, after terminal is attached to circuit domain (referring to that this terminal is registered in the Mobility Management Entity of EPS network and traditional C/S network simultaneously), generation moves to the coverage of the 2nd MME from the coverage of a MME, thereby when switching, be used for carrying out obtaining of service anchor positioning information, shown in Figure 4, comprising: receiving element and acquiring unit.
Receiving element is for the handover request message (this switching includes but not limited to the switching of PS business, the switching of CS business, tracing section updating flow process) of reception business.
Acquiring unit is used for after receiving element is received the handover request message or MM Context request of business, obtains the information relevant to the service anchor positioning of this circuit domain business or Mobility Management Entity.
Further, can comprise in described acquiring unit: first obtains subelement and/or second obtains subelement.
First obtains subelement, is used for the handover request message received from receiving element or MM Context request (but above being not limited to two message) and obtains described service anchor positioning information.
Second obtains subelement, is used for obtaining described service anchor positioning information or Mobility Management Entity information from HSS.
Further, also can comprise: transfer unit, the service anchor positioning information that is used for acquiring unit is obtained is with this switching interaction message transmission.The concrete handover request message of passing through is transmitted the mode of described service anchor positioning information and is specifically comprised: mode one, described service anchor positioning information by a MME with the reciprocal process of service anchor positioning in collect, and transmit with described switching interaction message; Perhaps, mode two, by a MME with the reciprocal process of special network element in collect, and transmit with described switching interaction message, described special network element is for can switching interaction message and be forwarded to the network element of service anchor positioning; Perhaps, mode three, collected from the configuration information of this side network element by a MME, and transmit with described switching interaction message; Perhaps, mode four, collected from belong to signing register HSS by a MME, and transmit with described switching interaction message.
Further, also can comprise: judging unit be used for judging that described terminal is the VCC terminal, and there is circuit domain voice dedicated bearing in this terminal; MME changes when but the Mobility Management Entity of the circuit domain of user's registration does not change (being not limited to this two kinds of methods), triggers acquiring unit.
Further, also can comprise: trigger element and business anchoring treatment unit.
Trigger element is used for working as the coverage that described terminal is left the 2nd MME, when again switching, sends triggering signal;
Business anchoring treatment unit is used for receiving triggering signal as trigger condition, the described service anchor positioning information that obtains according to acquiring unit, the processing that this circuit domain business is correlated with.
Three, provide a kind of application scenarios of the embodiment of the present invention, but be not limited to this scene.
The business grappling process that occurs in the UE handoff procedure is as example, and is shown in Figure 5.
When terminal is attached to circuit domain and is moved, cause the service network element of terminal to change, at this moment source service network element need to be transmitted to the positional information of service anchor positioning the destination service network element.Described positional information includes but not limited to Service Control Unit ADDress information, can be also other all can therefrom infer the information of service anchor positioning address, as source tracking area identification Old TA ID, Source eNodeB address, VLRnumber etc.The service network element is at EPS network middle finger MME, and service anchor positioning refers to eMSC.
Five, followingly describe in further detail by 4 embodiment.
The embodiment of the present invention one:
In SR VCC research, if operator adopts the SRVCC solution under the CS control mode in order to protect the CS investment.Network comprises intermediate entities eMSC, and this entity is to have done upgrading to improve on the basis with original MSC function.
When VCC UE is in the Idle state in EPS network generation audio call or other PS business or user, because the MME switching has occured again for the movement of this UE, can transmit the eMSC address this moment between MME, to satisfy follow-up business demand.The eMSC address here can refer to that this UE is linked into the eMSC of the eMSC address of EPS network or responsible user's circuit domain mobile management first in calling procedure.
Process shown in Figure 6, as to switch between MME comprises the following steps:
1, described UE sends to source eNodeB with measurement report, and source eNodeB determines to initiate handover request.
2, source eNodeB sends Relocation Required message to source MME.Can carry the carrying ID that carries out data retransmission in message.
3, source MME sends Forward Relocation Request message to target MME, wherein carry MME UE context, PDN GW address, TEIDs at the PDN GW (s) foruplink traffic, Serving GW address, TEIDs for uplink traffic, and described eMSC address.Above-mentioned information can be collected in the reciprocal process of source MME and service anchor positioning, also can adopt alternate manner to collect.
Target MME obtains described eMSC address and preserves from this Forward Relocation Request message.
Transmit mobile management that eMSC address Main Function is that this UE subsequent conditioning circuit territory is relevant or the processing of other CS traffic aideds, target MME need to send to correct eMSC with circuit domain relevant treatment message, makes the relevant business continuation of circuit domain or the continuation of mobile management.
4a-4b, target MME indication target Serving GW carries foundation.
To be UE do resource in new side in the back prepares and deletes the source resource and carry out transfer of data and tracing section updating process, if the user is carrying out the PS related service, the third step in the present embodiment can not carry eMSC address relevant information, but by transmitting eMSC address relevant information in follow-up tracing section updating flow process between the old and new MME in the process of context transfer, concrete steps can be described with reference to the realization of embodiment five.
Illustrate: in the 3rd step, Source MME sends in the message of Target MME and not only can comprise the eMSC address, can also be other any cells (as OLD TA ID) that navigate to described eMSC.
The embodiment of the present invention two:
In SR VCC research, if operator adopts the SRVCC solution under the CS control mode in order to protect the CS investment.Network comprises intermediate entities eMSC, and this entity is to have done upgrading to improve on the basis with original MSC function.
As VCC UE after CS speech business or other PS, CS business occur in the EPS network, because the MME switching has occured again in the movement of this UE, need to transmit the eMSC address this moment between MME, follow-uply may further switch to the CS mobile management operation that third-party demand or user carry out at the EPS network to satisfy.
The process of switching between MME comprises the following steps:
1, described UE sends to source eNodeB with measurement report, and source eNodeB determines to initiate handover request.
2, source eNodeB sends Relocation Required message to source MME.Can carry the carrying ID that carries out data retransmission in message.
3, source MME collects the OLD TA ID of described eMSC by TA ID query script.Send Forward Relocation Request message to target MME afterwards, wherein carry MME UEcontext, PDN GW address, TEIDs at the PDN GW (s) fou plink traffic, ServingGW address, TEIDs for uplink traffic, and the OLD TA ID of described eMSC.
Target MME obtains the OLD TAID of described eMS C and preserves from this Forward Relocation Request message.
The OLD TA ID Main Function that transmits described eMSC is that this UE is follow-up and switches during the third party or when the follow-up CS of carrying out business or mobile management relevant treatment, target MME need to send to service request correct eMSC, otherwise can cause because the failure of circuit domain business relevant treatment.
4, target MME indication target Serving GW carries foundation.
Illustrate: in the 3rd step, Source MME sends in the message of Target MME and not only can comprise eMSC address or OLD TA ID, can also be other any cells that navigate to described eMSC.
The embodiment of the present invention three:
The user is in doing position updating process, and HSS can be known as the service anchor positioning address of user's service.Follow-up when user's circuit for generating territory traffic aided is processed operation, for the network element of user's service can obtain the service anchor positioning address from HSS, thereby guarantee business continuity.
Shown in Figure 7, comprise the following steps:
1, the measurement report that reports according to UE of Source eNodeB determines to initiate handover request.
2, Source eNodeB sends Relocation Required message to Source MME, comprises carrying ID, the Target cell ID of transfer of data in message.
3, Source MME sends Service Information Req message to HSS, to obtain the address of service anchor positioning AMSC.Carry IMSI and MME ID in this message.
After HSS receives this message, inquire about the information of the service anchor positioning AMSC of this UE current business of grappling according to IMSI wherein, and send Service Information Rsp message to Source MME, wherein carry the address of this service anchor positioning AMSC or other can navigate to the information of AMSC address.
4, Source MME sends Forward Relocation Request message to eMSC.Carry the cells such as MME UE context, AMSC address, Target cell ID in message.Described eMSC is unspecific eMSC, as: the eMSC corresponding with Source MME.
Described eMSC obtains the AMSC address and preserves from the Forward Relocation Request message of receiving.
Follow-up, carry out the business anchoring treatment.This eMSC is transmitted to service anchor positioning with the circuit domain business request message, to support rear continuation circuit domain business.
The embodiment of the present invention four:
The user is in doing position updating process, and HSS can be known as the service anchor positioning address (being the address of AMSC) of user's service.Follow-up when the business operation of user's circuit for generating territory, for the network element of user's service can obtain the service anchor positioning address from HSS, thereby guarantee business continuity.
Shown in Figure 8, comprise the following steps:
1, the measurement report that reports according to UE of Source eNodeB determines to initiate handover request.
2, Source eNodeB sends Relocation Required message to Source MME, comprises carrying ID, the Target cell ID of transfer of data in message.
3, Source MME sends Forward Relocation Request message according to self configuring to eMSC.Carry the cells such as MME UE context, Target cell ID in message.Described eMSC is unspecific eMSC, as: the eMSC corresponding with Source MME.
4, after this eMSC receives Forward Relocation Request message, judge that according to Target Cell Identifier wherein the follow-up third party that switches to occurs UE; Send to HSS the address that Service InformationReq message is obtained service anchor positioning AMSC afterwards.Carry IMSI and eMSC self address in this message.HSS receives after this message the information according to the service anchor positioning AMSC of the described UE current business of IMSI inquiry grappling, and send Service Information Rsp message to eMSC, wherein carry service anchor positioning AMSC address or other can navigate to the information of AMSC address.
Figure 9 shows that the embodiment of the present invention five, be described in detail as follows:
The user is moved under Idle or Active state (the TAU flow process after the PS business is switched generally occurs), the user is in doing the flow process of tracing section updating, new side MME obtains eMSC relevant information (including but not limited to eMSC/VLR number or address information and Z2 interface conjunctionn indication information) from old side MME, and new side MME needs to notify eMSC to upgrade the MME information of Z2 interface conjunctionn after getting this information.
1, the user is because position movement moves to a new TA or TA List district, thus the TAU flow process below triggering.
2, related eNodeB is given in the request of user's initiating updating of tracking area, comprises S-TMSI, OldTAI etc. in this message.
3, eNodeB forwards the tracing section updating request message to new side MME.
4, new side MME derives old side MME address and sends context request message to old side MME according to S-TMSI and Old TAI after receiving the tracing section updating request.
5, old side MME sends the context request response message to new side MME, carries in this message with parameters such as this user-dependent MM context and subscription data, comprises IMSI, eMSC Address, signing parameter, authentication group etc.
If 6 source nonrecognition S-TMSI carry out the encrypting and authenticating flow process.
7, new side MME sends the context request response message to old side MME, and old side MME is all invalid according to the context about GW and HSS in this message marking context.
8, new side MME initiates to upgrade position requests to HSS, carries MME ID and IMSI information in message.
9, HSS sends the canceling position request to old side MME, carries IMSI and CancellationType in message, and wherein Cancellation Type is designated as more new technological process.
10, old side MME returns the canceling position response message to HSS, carries IMSI in message.
11, HSS upgrades response message by the position and brings new side MME with subscription data.
12, new side MME puts to upgrade to the HSS return and completes message.
13, new side MME initiates the information that message flow upgrades related MME in eMSC/VLR.
14, new side MME carries the information such as S-TMSI and TA list to UE in message is accepted in the tracing section updating request.
15, the user completes at tracing section updating and has confirmed S-TMSI and TA list information in message.
Figure 10 shows that the embodiment of the present invention six, be described in detail as follows:
When the MME of service-user changes, but user's eMSC does not change, and this related information has storage in HSS.So new side MME can obtain from HSS the eMSC information of service-user.Obtain eMSC address relevant information take user new side MME in the TAU process from HSS and this problem is described as example, applicable equally for other handoff scenario.
Realization from the step 1 to the step 6 is described with embodiment five.
Step 7: new side MME sends the business information request and obtains eMSC address relevant information to HSS, and HSS returns to eMSC address relevant information according to storage information.Order before and after this step and step 4, eight, nine do not exist.If this step is omitted in addition, carry in can also the position update response information in step 12 to return and obtain eMSC address relevant information from HSS.
Step 8 is to step 10 six: with the step 7 in embodiment five to step 15.
In sum, in the method for the embodiment of the present invention and device, when terminal is attached to circuit domain, and move to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME, thereby when switching, after the 2nd MME receives handover request, also comprise the step of obtaining the service anchor positioning information relevant to this circuit domain business.So that the 2nd MME can obtain the service anchor positioning information relevant to this circuit domain business.
Further, leave the coverage of the 2nd MME when terminal, when again switching, after the one MME or this third party of switching sensing receive handover request message, obtain the service anchor positioning information relevant to this circuit domain business, and according to the described service anchor positioning information that obtains, this circuit domain business is carried out the processing relevant to grappling.So the embodiment of the present invention can be anchored on business on service anchor positioning, can not cause service disconnection.And bring good experience to the user.
Further, also mentioned in the embodiment of the present invention and need to obtain the decision condition of described service anchor positioning information, thereby need not all to carry out in all cases the operation of " obtaining " and " grappling ", optimized the present invention.
Further, the several mode of obtaining the relevant information of service anchor positioning also specifically is provided in the embodiment of the present invention, thereby has better supported the present invention.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. the method for a business transferring anchor positioning information, is characterized in that, comprises the following steps:
After packet field network is registered to circuit domain, and move to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME when terminal, thereby when switching, the service anchor positioning information of transfer circuit territory business;
After the 2nd MME receives handover request, thereby send request to the network element that has service anchor positioning information by described transmittance process, obtain the described service anchor positioning information relevant to circuit domain business.
2. the method for claim 1, is characterized in that, described service anchor positioning information is arbitrary information that can navigate to service anchor positioning; Perhaps be arbitrary information that can navigate to special network element, described special network element is for can be forwarded to handover request message the network element of service anchor positioning.
3. the method for claim 1, is characterized in that, described service anchor positioning information comprises: address information and/or source tracking area identification OLD TAID.
4. the method for claim 1, is characterized in that, the mode of obtaining described service anchor positioning information comprises:
Mode one, described service anchor positioning information by a MME with the reciprocal process of service anchor positioning in collect, and transmit with described handover request message; Perhaps,
Mode two, by a MME with the reciprocal process of special network element in collect, and transmit with described handover request message, described special network element is for can be forwarded to handover request message the network element of service anchor positioning; Perhaps,
Mode three, collected from the configuration information of this side network element by a MME, and transmit with described handover request message; Perhaps,
Mode four, collected from belong to signing register HSS by a MME, and transmit with described handover request message; Perhaps,
Mode five, directly collected from belong to signing register HSS by the 2nd MME.
5. method as claimed in claim 4, is characterized in that, specifically comprises in described mode four:
When described circuit domain business be carried as that continuous voice call VCC service bearer or MME change when but the Mobility Management Entity of the circuit domain of user's registration does not change, send a request message to HSS, to obtain described service anchor positioning information, carry international mobile subscriber identity IMSI and a MME address of described terminal in this request message;
After HSS receives this request message, according to wherein the IMSI inquiry described service anchor positioning information relevant to the current circuit domain business of this terminal, and return to according to a MME address service anchor positioning information that inquires to a MME;
The one MME transmits described service anchor positioning information with handover request message.
6. method as claimed in claim 4, is characterized in that, specifically comprises in described mode five:
When described circuit domain business be continuous voice call VCC business or MME change when but the Mobility Management Entity of the circuit domain of user registration does not change, send a request message to HSS, to obtain described service anchor positioning information, carry the address of IMSI and the 2nd MME of described terminal in this request message;
After HSS receives this request message, according to the IMSI inquiry described service anchor positioning information relevant to this terminal current business wherein, and return to according to the address of the 2nd MME the service anchor positioning information that inquires to the 2nd MME.
7. the method for claim 1, is characterized in that, the decision condition that need to obtain described service anchor positioning information is: described terminal is continuous voice call VCC terminal, and there is circuit domain voice dedicated bearing in this terminal; Perhaps MME changes but the circuit domain Mobility Management Entity of user registration does not change.
8. entity that is used for mobile management, it is characterized in that, when being attached to circuit domain, terminal carries out circuit domain business, and move to the coverage of the 2nd MME from the coverage of the first Mobility Management Entity MME, thereby when switching, be used for carrying out obtaining of service anchor positioning information, comprise:
Receiving element is for the handover request message of reception business;
Acquiring unit is used for obtaining the information relevant to the service anchor positioning of this circuit domain business after receiving element is received the handover request message of business;
Wherein, described acquiring unit comprises:
First obtains subelement, is used for obtaining described service anchor positioning information from the handover request message that receiving element is received; And/or
Second obtains subelement, is used for obtaining described service anchor positioning information from HSS;
Described entity also comprises: transfer unit, the service anchor positioning information that is used for acquiring unit is obtained is with this handover request message transmission.
9. entity as claimed in claim 8, is characterized in that, described entity also comprises: judging unit be used for judging that described terminal is continuous voice call VCC terminal, and there is circuit domain voice dedicated bearing in this terminal; Perhaps MME changes when but the Mobility Management Entity of the circuit domain of user's registration does not change, triggers acquiring unit.
10. entity as claimed in claim 8, is characterized in that, described entity also comprises:
Trigger element is used for working as the coverage that described terminal is left the 2nd MME, when again switching, sends triggering signal;
Business anchoring treatment unit is used for to receive triggering signal as trigger condition, and the described service anchor positioning information according to acquiring unit obtains carries out the processing relevant to grappling to this circuit domain business.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710196808 CN101384081B (en) | 2007-09-07 | 2007-12-05 | Method and apparatus for transmitting service anchor positioning information |
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| CN200710145954 | 2007-09-07 | ||
| CN200710145954.1 | 2007-09-07 | ||
| CN 200710196808 CN101384081B (en) | 2007-09-07 | 2007-12-05 | Method and apparatus for transmitting service anchor positioning information |
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| CN101384081B true CN101384081B (en) | 2013-06-05 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101931932A (en) * | 2009-06-22 | 2010-12-29 | 中兴通讯股份有限公司 | Switching method and system of circuit domain business as well as switching test method and system |
| CN102131259B (en) * | 2010-01-13 | 2013-06-05 | 华为技术有限公司 | Switching control method and related equipment and system |
| CN102457835B (en) * | 2010-10-18 | 2015-04-22 | 中国移动通信集团公司 | Network switching method and system thereof, and equipment |
| CN103200149A (en) * | 2012-01-04 | 2013-07-10 | 中兴通讯股份有限公司 | Reverse-direction one-standby service continuity implementation method and device |
| WO2014022967A1 (en) * | 2012-08-07 | 2014-02-13 | Telefonaktiebolaget L M Ericsson (Publ) | Enhancement on voice call continuity during handover |
| CN104349302A (en) * | 2013-07-25 | 2015-02-11 | 中兴通讯股份有限公司 | Roaming processing method for circuit domain fallback business, and network elements |
| CN105594250B (en) * | 2014-09-12 | 2019-07-12 | 华为技术有限公司 | PS/CS coordination approach and system and mobile interaction center |
| CN108738089B (en) * | 2017-04-24 | 2023-04-14 | 中兴通讯股份有限公司 | Method and device for interoffice transmission of subscriber number |
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