CN110225558A - Trans-regional call handling method, MME, HSS and eMSC - Google Patents
Trans-regional call handling method, MME, HSS and eMSC Download PDFInfo
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- CN110225558A CN110225558A CN201810175344.4A CN201810175344A CN110225558A CN 110225558 A CN110225558 A CN 110225558A CN 201810175344 A CN201810175344 A CN 201810175344A CN 110225558 A CN110225558 A CN 110225558A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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Abstract
The embodiment of the invention provides a kind of trans-regional call handling methods, MME, HSS and eMSC, this method comprises: sending location update message to HSS after receiving the TAU request message that the UE under talking state is initiated；The associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS is extracted from the location updating confirmation message that the HSS is returned；After receiving the switching request that base station reports, the eSRVCC switching request message that the STNSR of ATCF is diffused out described in carrying is sent to eMSC, so that the eMSC is based on diffusing out ATCF and complete eSRVCC together with ATCF with described diffuse out and switch described in the STNSR for diffusing out ATCF and the addressing of preconfigured neighbouring ATCF information.Scheme provided in an embodiment of the present invention can ensure that user can also keep Session continuity even if triggering eSRVCC switching under trans-regional talking state.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to trans-regional call handling method, MME, HSS and
eMSC。
Background technique
VoLTE (Voice overLong is used in LTE (Long Term Evolution, the long term evolution) area of coverage
Term Evolution, long term evolution voice) voice service may be implemented.Wherein, VoLTE refers to based on IMS (IP
Multimedia Subsystem, IP multimedia subsystem) LTE voice service.When user is roamed out the LTE area of coverage, lead to
It will frequently with SRVCC (Single Radio Voice Call Continuity, single wireless voice calling continuity) technology
The voice service of user is switched to 2G net or 3G net from VoLTE to guarantee the continuity of voice service.
(Mobility Management Entity, mobile management are real with MME in moving process after user equipment booting
Body) between connection status can divide into ECM-IDLE, ECM-CONNECTED, three states in talking state.
User equipment transprovincially carries out diffusing in province IMS registration under ECM-IDLE, ECM-CONNECTED state, diffuses in province
STNSR (Session Transfer Number Single Radio, the single wireless Session Hand-off number carried on the MME of part
Code) it is associated ATCF (the Access Transfer Control for diffusing in province when user equipment registration diffuses in province IMS
Function, Session Hand-off control function) distribution.Later, if user equipment is diffusing in province triggering eSRVCC
(enhanced Single Radio Voice Call Continuity, the single wireless voice calling continuity of enhancing) is cut
It changes, the eMSC (enhanced Mobile Switching Centre) for diffusing in province can be by the province that diffuses in of distribution
The corresponding ATCF for diffusing in province is found in the STNSR parsing routing of ATCF, and normally completes eSRVCC switching flow.
Now in net, user equipment under talking state transprovincially after, call drop phenomenon will be occurred by carrying out diffusing in province IMS registration；
And if without diffusing in province IMS registration, once user equipment is diffusing in province triggering eSRVCC switching under talking state,
The STNSR of the associated ATCF of current talking (diffusing out the ATCF in province) is not present on MME due to diffusing in province, necessarily occurs
EMSC can not address diffuse out province ATCF cause eSRVCC switching flow fail, still will appear call drop phenomenon.
Summary of the invention
For the defects in the prior art, the embodiment of the present invention provide trans-regional call handling method, MME, HSS and
EMSC can ensure that user can also keep Session continuity even if triggering eSRVCC switching under trans-regional talking state.
On the one hand, the embodiment of the present invention provides a kind of trans-regional call handling method, comprising:
After receiving the tracing section updating TAU request message that the user equipment (UE) under talking state is initiated, contract to ownership place
Data server HSS sends location update message；
The UE registration is extracted from the location updating confirmation message that the HSS is returned diffuses out IP multimedia subsystem IMS
When the associated single wireless Session Hand-off number STNSR for diffusing out Session Hand-off control function ATCF；
After receiving the switching request that base station reports, sends to enhanced mobile switching centre eMSC and diffused out described in carrying
The enhancing single wireless voice calling continuity eSRVCC switching request message of the STNSR of ATCF, so that the eMSC is based on institute
It states and diffuses out ATCF described in the STNSR for diffusing out ATCF and preconfigured neighbouring ATCF information addressing and diffused out together with ATCF with described
Complete eSRVCC switching.
Another aspect, the embodiment of the present invention provide a kind of trans-regional call handling method, comprising:
Receive the current associated location update message for diffusing in mobile management entity MME transmission of the UE under talking state；
To the position for diffusing in MME return and carrying the associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS
Confirmation message is updated, so that the MME that diffuses in is disappeared based on the STNSR for diffusing out ATCF to eMSC initiation eSRVCC switching request
Breath.
Another aspect, the embodiment of the present invention provide a kind of trans-regional call handling method, comprising:
Receive association when the current associated carrying UE registration for diffusing in MME transmission of the UE under talking state diffuses out IMS
The STNSR for diffusing out ATCF eSRVCC switching request message；
According to preconfigured neighbouring ATCF information, the address ATCF corresponding with the STNSR for diffusing out ATCF is determined；
It is routed to according to the address ATCF and diffuses out ATCF, and complete eSRVCC switching together with ATCF with described diffuse out.
Another aspect, the embodiment of the present invention provide a kind of mobile management entity, comprising:
Position updating request unit is sent after receiving the TAU request message that the UE under talking state is initiated to HSS
Location update message；
Forwarding number extraction unit, for extracting the UE registration from the location updating confirmation message that the HSS is returned
The associated STNSR for diffusing out ATCF when diffusing out IMS；
Call handover request unit, for being asked to the eSRVCC switching for the STNSR for diffusing out ATCF described in eMSC transmission carrying
Seek message so that the eMSC diffuse out the STNSR of ATCF according to and preconfigured neighbouring ATCF information be addressed to it is described
It diffuses out ATCF and completes eSRVCC switching together with ATCF with described diffuse out.
Another aspect, the embodiment of the present invention provide a kind of ownership place subscription data server, comprising:
Location updating receiving unit, for receiving the current associated position for diffusing in MME transmission the UE under talking state more
New information；
Location updating feedback unit, for it is described diffuse in MME return carry it is associated when UE registration diffuses out IMS
Diffuse out the location updating confirmation message of the STNSR of ATCF, for it is described diffuse in MME based on the STNSR for diffusing out ATCF to
EMSC initiates eSRVCC switching request message.
Another aspect, the embodiment of the present invention provide a kind of enhanced mobile switching centre, comprising:
Call handover request receiving unit, for receiving, the UE under talking state is currently associated to diffuse in taking for MME transmission
The eSRVCC switching request message of the associated STNSR for diffusing out ATCF when diffusing out IMS with UE registration；
ATCF address lookup unit, for using DNS query acquisition ATCF corresponding with the STNSR for diffusing out ATCF
Location；
Switching treatmenting unit is called, diffuses out ATCF for routing to according to the address ATCF, and diffuse out ATCF with described
ESRVCC switching is completed together.
Another aspect, the embodiment of the present invention provide a kind of electronic equipment, including processor, memory and bus, in which:
The processor, the memory complete mutual communication by bus；
The processor can call the computer program in memory, the step of to execute any one of the above method.
In another aspect, the embodiment of the present invention provides a kind of computer readable storage medium, it is stored thereon with computer program,
The program realizes the step of any one of the above method when being executed by processor.
Trans-regional call handling method provided in an embodiment of the present invention, MME, HSS and eMSC, by HSS during TAU to
The associated STNSR for diffusing out ATCF, i.e. UE current talking when MME offer UE registration diffuses out IMS is diffused in be associated with before trans-regional
ATCF STNSR and eMSC in preconfigured neighbouring ATCF information, allow eMSC by neighbouring ATCF information and
The STNSR for diffusing out ATCF, which is addressed to, diffuses out ATCF completion initial session transfer flow, to normally complete eSRVCC switching, guarantee
User can also keep Session continuity even if triggering eSRVCC switching under trans-regional talking state.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows the exemplary process diagram of trans-regional call handling method according to an embodiment of the invention；
Fig. 2 shows the exemplary process diagrams of the trans-regional call handling method of another embodiment according to the present invention；
Fig. 3 shows the exemplary process diagram of the trans-regional call handling method of another embodiment according to the present invention；
Fig. 4 shows the structural schematic diagram of mobile management entity MME according to an embodiment of the invention；
Fig. 5 shows the structural schematic diagram of ownership place subscription data server HSS according to an embodiment of the invention；
Fig. 6 shows the structural schematic diagram of enhanced mobile switching centre eMSC according to an embodiment of the invention；
Fig. 7 shows the entity structure schematic diagram of electronic equipment according to an embodiment of the invention.
Specific embodiment
Clear, complete description is carried out to technical solution of the present invention below with reference to attached drawing, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff obtained all other embodiment without making creative work belongs to the present invention and is protected
The range of shield.
The terms such as " module " used in this application, " device " be intended to include with computer-related entity, such as it is but unlimited
In hardware, firmware, combination thereof, software or software in execution.For example, module can be, and it is not limited to: processing
Process, processor, object, executable program, the thread of execution, program and/or the computer run on device.For example, it counts
Calculating the application program run in equipment and this calculating equipment can be module.One or more modules can be located in execution
In one process and/or thread, a module can also be located on a computer and/or be distributed in two or more calculating
Between machine.
It is understood that the region that the UE for carrying out transregional domain call herein is stepped out in communication process referred to as diffuses out
Region, the region that UE strides into communication process referred to as diffuse in region；It diffuses out the corresponding MME in region and referred to as diffuses out MME, overflow
Enter the corresponding MME in region and referred to as diffuses in MME；The IMS for diffusing out region referred to as diffuses out IMS, and the IMS for diffusing in region is referred to as unrestrained
Enter IMS；UE registers associated ATCF when diffusing out IMS and referred to as diffuses out ATCF, and UE registers associated ATCF when diffusing in IMS and is referred to as
Diffuse in ATCF；It diffuses in region and diffuses in the associated eMSC of MME and referred to as diffuse in eMSC.
The technical solution that the invention will now be described in detail with reference to the accompanying drawings.
With reference to Fig. 1, it illustrates the exemplary process diagrams of trans-regional call handling method according to an embodiment of the invention.
As shown in Figure 1, trans-regional call handling method provided in an embodiment of the present invention, may include steps of:
S110: after receiving the TAU request message that the UE under talking state is initiated, location update message is sent to HSS.
Trans-regional call handling method provided in an embodiment of the present invention can be adapted for diffusing in MME.
In the embodiment of the present invention, it is on call under UE moving process in diffuse out and diffuse in diffusing in from diffusing out region
After region, UE will test tracking area and update, and initiate TAU request message to the base station of access, and by base station by TAU
Request message, which is forwarded to, diffuses in MME.
For example, UE strides into from A province to after B province, and UE will test current institute under scene of the UE under talking state transprovincially
Place's region (diffusing in region) is not belonging to the B prestored and saves corresponding tracking area list, thereby determines that and detects that tracking area occurs more
Newly, and to base station TAU request message is initiated.Correspondingly, TAU request message is forwarded to and is presently in corresponding to region by base station
MME diffuses in MME.
It diffuses in after MME receives the TAU request message that UE under talking state is initiated, it can be to HSS (Home
Subscriber Server, ownership place subscription data server) location update message is sent, so that HSS is sent out to MME is diffused out
Send canceling position message.In this way, UE is associated with MME disconnection is diffused out, and it is interrelated with diffusing in MME by base station and realizing.
Further, it diffuses in front of MME sends location update message to HSS, it can be by carrying in TAU request message
GUTI (Globally Unique Temporary UEIdentity, the unique interim subscriber identity in the whole world), which is obtained, diffuses out MME's
Address, and the addressing of address by diffusing out MME is to diffusing out MME, and sends context request message to MME is diffused out, to obtain UE
Contextual information.
Correspondingly, it diffuses out MME and returns to context response information to MME is diffused in, can carry UE's in context response information
Contextual information.Then, it diffuses in MME and returns to context acknowledgement message to MME is diffused out.
Further, authentication and safety certification can be carried out by diffusing between MME and UE；Diffusing between MME and HSS can carry out
Authentication and safety certification.
Further, diffuse in MME and diffuse out completed between MME UE contextual information update after, diffusing in MME can be to
It diffuses in SGW (Serving GateWay, gateway) and sends bearer update request message.
Correspondingly, diffuse in SGW receive diffuse in MME transmission bearer update request message after, bearer update is requested
Message is transmitted to PGW (Packet Data Network GateWay, grouped data network gateway)；PGW is returned to SGW and is carried
Update response.
Wherein, it diffuses in SGW and refers to the SGW that is used to carry media corresponding with MME is diffused in.
S120: the UE registration is extracted from the location updating confirmation message that the HSS is returned and diffuses out associated when IMS overflow
The STNSR of ATCF out.
In the embodiment of the present invention, location update message is being sent to HSS by step S110, HSS and is being diffused out complete between MME
After canceling position, diffusing in MME can receive the location updating confirmation message of HSS return.
In order to solve the problems, such as in existing net eSRVCC handover failure after communication process mid span area, diffuses in MME and need to obtain
The STNSR of UE current talking associated ATCF before trans-regional；Consider HSS in UE current talking before trans-regional
It is stored with the STNSR of the ATCF.
Therefore, in the embodiment of the present invention, UE registration can be carried in the location updating confirmation message that HSS is returned and diffuses out IMS
When associated the STNSR for diffusing out ATCF, the i.e. STNSR of UE current talking associated ATCF before trans-regional.In this way, diffusing in
The associated STNSR's for diffusing out ATCF mentions when MME can diffuse out IMS from the location updating confirmation message progress UE registration received
It takes.
S130: after receiving the switching request that base station reports, send the STNSR's that ATCF is diffused out described in carrying to eMSC
ESRVCC switching request message, so that the eMSC is based on the STNSR for diffusing out ATCF and preconfigured neighbouring ATCF letter
ATCF is diffused out described in breath addressing and eSRVCC switching is completed together with ATCF with described diffuse out.
It in practical application, diffuses in after the location updating confirmation message that MME receives HSS return, TAU can be sent to UE
Received message can carry in the TAU received message and described diffuse in the GUTI and TAL (Tracking that MME is UE distribution
Area List, tracking area list) and loaded state.
Further, when diffusing in the GUTI that MME is distributed and the inconsistent GUTI for diffusing out MME distribution described in the UE determination,
TAU completion message can be sent to the MME that diffuses in.
In the embodiment of the present invention, after completing TAU process, if diffusing in MME will diffusing in region triggering eSRVCC switching
The switching request that base station reports can be received.And diffuse in after MME receives the switching request that base station reports, it can be to diffusing in region
EMSC sends eSRVCC switching request message: SRVCC PS TO CS Request message.
Wherein, it is carried in eSRVCC switching request message and diffuses in the STNSR for diffusing out ATCF that MME is obtained from HSS.
Be provided with neighbouring ATCF information in the embodiment of the present invention, in eMSC in advance.Wherein, it is wrapped in the neighbouring ATCF information
Include the corresponding relationship between the host name of the STNSR and the ATCF of the ATCF of at least one adjacent domain.
In this way, eMSC, which can use neighbouring ATCF information searching, goes out host name corresponding with the STNSR for diffusing out ATCF；Into
And eMSC can inquire the corresponding address ATCF by DNS (Domain Name System, domain name system), and according to looking into
The address ATCF ask out, which routes to, diffuses out ATCF, and eSRVCC switching is completed together with ATCF with diffusing out.In practical application, eMSC can
To initiate initial session transfer flow to ATCF is diffused out according to the address ATCF for diffusing out ATCF, eSRVCC switching is completed with this.
It, can be using this on how to complete eSRVCC switching based on initial session transfer flow in the embodiment of the present invention
The common technology means of field technical staff, are not described further herein.
Trans-regional call handling method provided in an embodiment of the present invention provides UE to MME is diffused in by HSS during TAU
The registration associated STNSR for diffusing out ATCF, i.e. STNSR of UE current talking associated ATCF before trans-regional when diffusing out IMS,
And preconfigured neighbouring ATCF information in eMSC, allow eMSC by neighbouring ATCF information and diffuses out ATCF's
STNSR be addressed to diffuses out ATCF complete initial session transfer flow, thus normally complete eSRVCC switching, ensured user across
Session continuity can also be kept even if triggering eSRVCC switching under the talking state of region.
Further, on the basis of the above embodiments, the transregional domain call processing side that further embodiment of this invention provides
In method, the method also includes:
After end of conversation, the insertion subscription data message that HSS is sent is received, is carried in the insertion subscription data message
The associated STNSR for diffusing in ATCF when diffusing in IMS described in the UE registration.
In the embodiment of the present invention, after UE completes call, i.e., after end of conversation, UE can initiate to diffuse in IMS registration.In UE
It carries out during diffusing in IMS registration, after diffusing in ATCF and receiving the registration message that UE is initiated, will diffuse in ATCF's
STNSR is sent to S-CSCF, completes subsequent IMS registration process.
S-CSCF can trigger third-party registration process after completing IMS registration process, and by before in IMS registration process
Registration message be encapsulated in new registration message and be sent to SCCAS (Service Centralization and
Continuity Application Server, service set and continuous application server) so that SCC AS acquisition diffuses in
The STNSR of ATCF.
SCC AS can obtain the currently stored STNSR of HSS by the STNSR for diffusing in ATCF obtained from S-CSCF and from HSS
It is compared, if inconsistent, SCC AS can send update message to HSS, include from the unrestrained of SCC AS acquisition in update message
Enter the STNSR of ATCF.
The STNSR that HSS is stored before will being replaced with the STNSR for diffusing in ATCF after the update message for receiving SCC AS,
Then pass through insertion subscription data message: InsertSubscriber Data message, by the updated STNSR for diffusing in ATCF
It is sent to and diffuses in MME.
In this way, complete diffuse in IMS registration after, the STNSR for diffusing in ATCF will be stored with by diffusing on MME, with cope with UE it
Afterwards in the eSRVCC switching for diffusing in region.
Other steps of the embodiment of the present invention are similar to previous embodiment step, and the embodiment of the present invention repeats no more.
Trans-regional call handling method provided in an embodiment of the present invention, by carrying out IMS registration simultaneously in time after end of conversation
The STNSR for diffusing in ATCF is provided to MME, can ensure UE to provide support in the eSRVCC switching for diffusing in region after subsequent UE
Call continuity when diffusing in region triggering access net switching.
Further, with reference to Fig. 2, it illustrates showing for the trans-regional call handling method of another embodiment according to the present invention
Example property flow chart.On the basis of the above embodiments, as shown in Fig. 2, at the transregional domain call that further embodiment of this invention provides
Reason method, may include steps of:
S210: the current associated location update message for diffusing in MME transmission of the UE under talking state is received.
Trans-regional call handling method provided in an embodiment of the present invention can be adapted for HSS.
In practical application, it is on call under UE moving process in diffuse out and diffuse in diffusing in region from diffusing out region
Later, UE will test tracking area and update, and initiate TAU request message to the base station of access, and requested TAU by base station
Message, which is forwarded to, diffuses in MME.UE is associated with MME disconnection is diffused out, and interrelated with diffusing in MME by base station and realizing.Diffuse in MME
After receiving the TAU request message that the UE under talking state is initiated, location update message can be sent to HSS.
Correspondingly, HSS can receive from the location update message for diffusing in MME.
Further, authentication and safety certification can be carried out by diffusing between MME and HSS.
Further, in order to complete TAU process, HSS, which is received, to be diffused in after the location update message of MME transmission, can be with
The associated MME that diffuses out sends canceling position message before to UE, and the canceling position response that MME return is diffused out described in reception disappears
Breath.
S220: Xiang Suoshu, which diffuses in MME return, carries the associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS
Location updating confirmation message, for it is described diffuse in MME based on the STNSR for diffusing out ATCF to eMSC initiate eSRVCC switching
Request message.
The associated STNSR for diffusing out ATCF when UE registration diffuses out IMS is stored in the embodiment of the present invention, in HSS.Actually answer
In, the HSS currently stored STNSR for diffusing out ATCF is mentioned in the update message of SCC AS transmission when diffusing out IMS from UE registration
It takes.
It, can be to described after HSS receives the canceling position response message for diffusing out MME return in the embodiment of the present invention
It diffuses in MME return position and updates confirmation message.
Wherein, Xiang Suoshu, which is diffused in, carries currently stored UE registration in the location updating confirmation message of MME return and diffuses out
The associated STNSR for diffusing out ATCF when IMS.
In this way, diffuse in MME can be extracted from the location updating confirmation message that HSS is returned it is associated when UE registration diffuses out IMS
Diffuse out the STNSR of ATCF, the i.e. STNSR of UE current talking associated ATCF before trans-regional.Then, on receiving base station
After the switching request of report, the eSRVCC switching request message that the STNSR of ATCF is diffused out described in carrying is sent to eMSC, so that described
EMSC based on diffused out described in the STNSR for diffusing out ATCF and the addressing of preconfigured neighbouring ATCF information ATCF and with it is described unrestrained
ATCF completes eSRVCC switching together out.
Trans-regional call handling method provided in an embodiment of the present invention provides UE to MME is diffused in by HSS during TAU
The registration associated STNSR for diffusing out ATCF, i.e. STNSR of UE current talking associated ATCF before trans-regional when diffusing out IMS,
And preconfigured neighbouring ATCF information in eMSC, allow eMSC by neighbouring ATCF information and diffuses out ATCF's
STNSR be addressed to diffuses out ATCF complete initial session transfer flow, thus normally complete eSRVCC switching, ensured user across
Session continuity can also be kept even if triggering eSRVCC switching under the talking state of region.
Further, on the basis of the above embodiments, the transregional domain call processing side that further embodiment of this invention provides
In method, the method, further includes:
The STNSR update message of service set and continuous application server S CC AS transmission is received, the STNSR update disappears
The associated STNSR for diffusing in ATCF when diffusing in IMS comprising UE registration in breath；
The received STNSR for diffusing in ATCF is replaced into previously stored STNSR, and will carry and described diffuse in ATCF
The insertion subscription data message of STNSR be sent to and described diffuse in MME.
In the embodiment of the present invention, UE can initiate to diffuse in IMS registration after end of conversation, carry out diffusing in IMS registration in UE
In the process, after diffusing in ATCF and receiving the registration message that UE is initiated, S-CSCF is sent by the STNSR for diffusing in ATCF, it is complete
At subsequent IMS registration process.
S-CSCF can trigger third-party registration process after completing IMS registration process, and by before in IMS registration process
Registration message be encapsulated in new registration message and be sent to SCCAS so that SCC AS obtains the STNSR for diffusing in ATCF.
SCC AS can obtain the currently stored STNSR of HSS by the STNSR for diffusing in ATCF obtained from S-CSCF and from HSS
It is compared, if inconsistent, it includes the UE obtained from SCC AS in update message that SCC AS can send update message to HSS
Registration associated STNSR for diffusing in ATCF when diffusing in IMS.
In the embodiment of the present invention, HSS will use the STNSR for diffusing in ATCF after the update message for receiving SCC AS transmission
Previously stored STNSR is replaced, insertion subscription data message: Insert Subscriber Data message is then passed through, it will more
The STNSR for diffusing in ATCF after new, which is sent to, diffuses in MME.
In this way, complete diffuse in IMS registration after, the STNSR for diffusing in ATCF will be stored with by diffusing on MME, with cope with UE it
Afterwards in the eSRVCC switching for diffusing in region.
Other steps of the embodiment of the present invention are similar to previous embodiment step, and the embodiment of the present invention repeats no more.
Trans-regional call handling method provided in an embodiment of the present invention, by carrying out IMS registration simultaneously in time after end of conversation
The STNSR for diffusing in ATCF is provided to MME, can ensure UE to provide support in the eSRVCC switching for diffusing in region after subsequent UE
Call continuity when diffusing in region triggering access net switching.
Further, with reference to Fig. 3, it illustrates showing for the trans-regional call handling method of another embodiment according to the present invention
Example property flow chart.On the basis of the above embodiments, as shown in figure 3, at the transregional domain call that further embodiment of this invention provides
Reason method, may include steps of:
S310: when the current associated carrying UE registration for diffusing in MME transmission of UE under reception talking state diffuses out IMS
The eSRVCC switching request message of the associated STNSR for diffusing out ATCF.
Trans-regional call handling method provided in an embodiment of the present invention can be adapted for diffusing in eMSC.
In practical application, it is on call under UE moving process in diffuse out and diffuse in diffusing in region from diffusing out region
Later, UE will test tracking area and update, and initiate TAU request message to the base station of access, and requested TAU by base station
Message, which is forwarded to, current associated diffuses in MME.And diffuse in after MME receives the TAU request message that UE under talking state is initiated,
Location update message can be sent to HSS.In order to complete TAU process, HSS takes to the associated MME transmission position that diffuses out before UE
Message, and the canceling position response message of MME return is diffused out described in reception.To it is described diffuse in MME return carry the UE
The location updating confirmation message of registration associated STNSR for diffusing out ATCF when diffusing out IMS.
In the embodiment of the present invention, if diffusing in region triggering eSRVCC switching after completing TAU process, diffusing in MME will
The switching request that base station reports can be received.And diffuse in after MME receives the switching request that base station reports, it can be to diffusing in eMSC hair
Send eSRVCC switching request message: SRVCC PS TO CS Request message.
Wherein, it is carried in eSRVCC switching request message and diffuses in the STNSR for diffusing out ATCF that MME is obtained from HSS.
Correspondingly, associated when the receivable carrying UE registration for diffusing in MME transmission of eMSC diffuses out IMS diffuse out is diffused in
The SRVCC PS TO CS Request message of the STNSR of ATCF.
S320: according to preconfigured neighbouring ATCF information, with determining ATCF corresponding with the STNSR for diffusing out ATCF
Location.
In the embodiment of the present invention, diffuses in eMSC and be provided with neighbouring ATCF information in advance.Wherein, the neighbouring ATCF information
In include at least one adjacent domain ATCF STNSR and the ATCF host name between corresponding relationship.
In this way, when diffusing in eMSC and can extract UE registration from received eSRVCC switching request message and diffuse out IMS
The associated STNSR for diffusing out ATCF.Then, can be gone out according to neighbouring ATCF information searching corresponding with the STNSR for diffusing out ATCF
Host name；And the corresponding address ATCF of host name is gone out by DNS query.
S330: routing to according to the address ATCF and diffuse out ATCF, and completes eSRVCC together with ATCF with described diffuse out and cut
It changes.
In the embodiment of the present invention, eMSC is diffused in after determining to diffuse out the address ATCF of ATCF by step S320, it can
It is routed to according to the address ATCF determined and diffuses out ATCF, and complete eSRVCC switching together with ATCF with diffusing out.
In practical application, eMSC can initiate initial session transfer stream to ATCF is diffused out according to the address ATCF for diffusing out ATCF
Journey completes eSRVCC switching with this.
It, can be using this on how to complete eSRVCC switching based on initial session transfer flow in the embodiment of the present invention
The common technology means of field technical staff, are not described further herein.
Trans-regional call handling method provided in an embodiment of the present invention provides UE to MME is diffused in by HSS during TAU
The registration associated STNSR for diffusing out ATCF, i.e. STNSR of UE current talking associated ATCF before trans-regional when diffusing out IMS,
And preconfigured neighbouring ATCF information in eMSC, allow eMSC by neighbouring ATCF information and diffuses out ATCF's
STNSR be addressed to diffuses out ATCF complete initial session transfer flow, thus normally complete eSRVCC switching, ensured user across
Session continuity can also be kept even if triggering eSRVCC switching under the talking state of region.
On the basis of the various embodiments described above, further embodiment of this invention provides a kind of mobile management entity.
With reference to Fig. 4, it illustrates the structural schematic diagrams of mobile management entity MME according to an embodiment of the invention.
As shown in figure 4, mobile management entity MME 400 provided in an embodiment of the present invention may include: position updating request
Unit 401, forwarding number extraction unit 402 and call handover request unit 403.
Wherein, after position updating request unit 401 is used to receive the TAU request message that the UE under talking state is initiated, to
HSS sends location update message.
Forwarding number extraction unit 402 from the location updating confirmation message that the HSS is returned for extracting the UE note
Volume associated STNSR for diffusing out ATCF when diffusing out IMS.
Call handover request unit 403 is used to send the eSRVCC switching for diffusing out the STNSR of ATCF described in carrying to eMSC
Request message, so that the eMSC diffuses out the STNSR of ATCF according to and preconfigured neighbouring ATCF information is addressed to institute
It states and diffuses out ATCF and complete eSRVCC switching together with ATCF with described diffuse out.
Optionally, MME 400 provided in an embodiment of the present invention can also include: the first STNSR updating unit.
After first STNSR updating unit is used for end of conversation, the insertion subscription data message that HSS is sent is received, it is described to insert
Enter and carries the associated STNSR for diffusing in ATCF when diffusing in IMS described in the UE registration in subscription data message.
MME provided in an embodiment of the present invention provides pass when UE registration diffuses out IMS to MME is diffused in by HSS during TAU
The STNSR for diffusing out ATCF of connection, i.e. UE current talking before trans-regional in the STNSR and eMSC of associated ATCF in advance
The neighbouring ATCF information of configuration is addressed to eMSC with the STNSR for diffusing out ATCF by neighbouring ATCF information and diffuses out
ATCF completes initial session transfer flow, to normally complete eSRVCC switching, has ensured user under trans-regional talking state
Session continuity can also be kept even if triggering eSRVCC switching.
The embodiment of MME provided by the invention specifically can be used for executing the processing stream of embodiment of the method shown in above-mentioned Fig. 1
Journey, details are not described herein for function, is referred to the detailed description of above method embodiment.
On the basis of the various embodiments described above, further embodiment of this invention provides a kind of ownership place subscription data service
Device.
With reference to Fig. 5, it illustrates the structural representations of ownership place subscription data server HSS according to an embodiment of the invention
Figure.
As shown in figure 5, ownership place subscription data server HSS500 provided in an embodiment of the present invention may include: position more
New receiving unit 501 and location updating feedback unit 502.
Wherein, for receiving, the UE under talking state is currently associated to diffuse in what MME was sent to location updating receiving unit 501
Location update message.
Location updating feedback unit 502 is used to diffuse in MME return to described and carry association when UE registration diffuses out IMS
The STNSR for diffusing out ATCF location updating confirmation message, for it is described diffuse in MME based on the STNSR for diffusing out ATCF to
EMSC initiates eSRVCC switching request message.
Optionally, HSS 500 provided in an embodiment of the present invention can also include: location updating processing unit.Location updating
Processing unit is associated before being used for the UE to diffuse out MME transmission canceling position message, and MME return is diffused out described in reception
Canceling position response message.
Optionally, HSS 500 provided in an embodiment of the present invention can also include: the 2nd STNSR updating unit.
2nd STNSR updating unit is for receiving the STNSR of service set and continuous application server S CC AS transmission more
New information, the associated STNSR for diffusing in ATCF when diffusing in IMS comprising UE registration in the STNSR update message；It will receive
The STNSR for diffusing in ATCF replace previously stored STNSR, and the insertion of the STNSR for diffusing in ATCF will be carried
Subscription data message diffuses in MME described in being sent to.
HSS provided in an embodiment of the present invention provides pass when UE registration diffuses out IMS to MME is diffused in by HSS during TAU
The STNSR for diffusing out ATCF of connection, i.e. UE current talking before trans-regional in the STNSR and eMSC of associated ATCF in advance
The neighbouring ATCF information of configuration is addressed to eMSC with the STNSR for diffusing out ATCF by neighbouring ATCF information and diffuses out
ATCF completes initial session transfer flow, to normally complete eSRVCC switching, has ensured user under trans-regional talking state
Session continuity can also be kept even if triggering eSRVCC switching.
The embodiment of HSS provided by the invention specifically can be used for executing the processing stream of embodiment of the method shown in above-mentioned Fig. 2
Journey, details are not described herein for function, is referred to the detailed description of above method embodiment.
On the basis of the various embodiments described above, further embodiment of this invention provides a kind of enhanced mobile switching centre.
With reference to Fig. 6, it illustrates the structural representations of enhanced mobile switching centre eMSC according to an embodiment of the invention
Figure.
As shown in fig. 6, enhanced mobile switching centre eMSC 600 provided in an embodiment of the present invention may include: that calling is cut
Change request reception unit 601, ATCF address lookup unit 602 and calling switching treatmenting unit 603.
Wherein, call handover request receiving unit 601 is used to receive the current associated MME that diffuses in of the UE under talking state and sends out
The eSRVCC switching request message of the carrying the sent UE registration associated STNSR for diffusing out ATCF when diffusing out IMS.
ATCF address lookup unit 602 is used to obtain ATCF corresponding with the STNSR for diffusing out ATCF using DNS query
Address.
Calling switching treatmenting unit 603 diffuses out ATCF for routing to according to the address ATCF, and diffuses out with described
ATCF completes eSRVCC switching together.
EMSC provided in an embodiment of the present invention provides pass when UE registration diffuses out IMS to MME is diffused in by HSS during TAU
The STNSR for diffusing out ATCF of connection, i.e. UE current talking before trans-regional in the STNSR and eMSC of associated ATCF in advance
The neighbouring ATCF information of configuration is addressed to eMSC with the STNSR for diffusing out ATCF by neighbouring ATCF information and diffuses out
ATCF completes initial session transfer flow, to normally complete eSRVCC switching, has ensured user under trans-regional talking state
Session continuity can also be kept even if triggering eSRVCC switching.
The embodiment of eMSC provided by the invention specifically can be used for executing the processing stream of embodiment of the method shown in above-mentioned Fig. 3
Journey, details are not described herein for function, is referred to the detailed description of above method embodiment.
With reference to Fig. 7, it illustrates the entity structure schematic diagrames of electronic equipment according to an embodiment of the invention.Such as Fig. 7 institute
Show, which may include: processor (processor) 701, memory (memory) 702 and bus 703,
In, processor 701, memory 702 completes mutual communication by bus 703.
Processor 701 can call the computer program in memory 702, to execute embodiment of the method shown in above-mentioned Fig. 1
Provided method, for example,
After receiving the tracing section updating TAU request message that the user equipment (UE) under talking state is initiated, contract to ownership place
Data server HSS sends location update message；The UE registration is extracted from the location updating confirmation message that the HSS is returned
The associated single wireless Session Hand-off number for diffusing out Session Hand-off control function ATCF when diffusing out IP multimedia subsystem IMS
STNSR；After receiving the switching request that base station reports, is sent to enhanced mobile switching centre eMSC and diffuse out ATCF described in carrying
STNSR enhancing single wireless voice calling continuity eSRVCC switching request message so that the eMSC be based on it is described unrestrained
ATCF is diffused out described in the STNSR of ATCF and the addressing of preconfigured neighbouring ATCF information out and is completed together with ATCF with described diffuse out
ESRVCC switching.
In another embodiment, following method is realized when the processor 701 executes the computer program: call
After, the insertion subscription data message that HSS is sent is received, UE registration institute is carried in the insertion subscription data message
State the associated STNSR for diffusing in ATCF when diffusing in IMS.
In another embodiment, processor 701 can call the computer program in memory 702, on executing
State method provided by embodiment of the method shown in Fig. 2, for example,
Receive the current associated location update message for diffusing in mobile management entity MME transmission of the UE under talking state；To
The associated MME that diffuses out sends canceling position message before the UE, and the canceling position response that MME return is diffused out described in reception disappears
Breath；To the location updating for diffusing in MME return and carrying the associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS
Confirmation message, so that the MME that diffuses in initiates eSRVCC switching request message to eMSC based on the STNSR for diffusing out ATCF.
In another embodiment, following method is realized when the processor 701 executes the computer program: being received
The STNSR update message that service set and continuous application server S CC AS are sent, comprising described in the STNSR update message
UE registration associated STNSR for diffusing in ATCF when diffusing in IMS；It will be saved before the received STNSR replacement for diffusing in ATCF
STNSR, and the insertion subscription data message that will carry the STNSR for diffusing in ATCF is sent to and described diffuses in MME.
In another embodiment, processor 701 can call the computer program in memory 702, on executing
State method provided by embodiment of the method shown in Fig. 3, for example,
Receive association when the current associated carrying UE registration for diffusing in MME transmission of the UE under talking state diffuses out IMS
The STNSR for diffusing out ATCF eSRVCC switching request message；It is determining to be overflow with described according to preconfigured neighbouring ATCF information
The corresponding address ATCF the STNSR of ATCF out；It is routed to according to the address ATCF and diffuses out ATCF, and diffuse out ATCF mono- with described
It rises and completes eSRVCC switching.
Electronic equipment 700 provided in an embodiment of the present invention, at least have following technical effect that by HSS during TAU to
The associated STNSR for diffusing out ATCF, i.e. UE current talking when MME offer UE registration diffuses out IMS is diffused in be associated with before trans-regional
ATCF STNSR and eMSC in preconfigured neighbouring ATCF information, allow eMSC by neighbouring ATCF information and
The STNSR for diffusing out ATCF, which is addressed to, diffuses out ATCF completion initial session transfer flow, to normally complete eSRVCC switching, guarantee
User can also keep Session continuity even if triggering eSRVCC switching under trans-regional talking state.
The embodiment of the present invention discloses a kind of computer program product, and the computer program product is non-transient including being stored in
Computer program on computer readable storage medium, the computer program include program instruction, when described program instructs quilt
When computer executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example,
After receiving the TAU request message that the UE under talking state is initiated, location update message is sent to HSS；From the HSS
The associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS is extracted in the location updating confirmation message of return；Receive base
After the switching request that station reports, the eSRVCC switching request message that the STNSR of ATCF is diffused out described in carrying is sent to eMSC, so that
The eMSC based on diffused out described in the STNSR for diffusing out ATCF and the addressing of preconfigured neighbouring ATCF information ATCF and with institute
State diffuse out ATCF complete together eSRVCC switching.
Alternatively, the current associated location updating for diffusing in mobile management entity MME transmission of UE received under talking state disappears
Breath；To the location updating for diffusing in MME return and carrying the associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS
Confirmation message, so that the MME that diffuses in initiates eSRVCC switching request message to eMSC based on the STNSR for diffusing out ATCF.
Alternatively, when the current associated carrying UE registration for diffusing in MME transmission of UE under reception talking state diffuses out IMS
The eSRVCC switching request message of the associated STNSR for diffusing out ATCF；According to preconfigured neighbouring ATCF information, determining and institute
State the corresponding address ATCF STNSR for diffusing out ATCF；It is routed to according to the address ATCF and diffuses out ATCF, and diffused out with described
ATCF completes eSRVCC switching together.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage
Medium storing computer program, the computer program make the computer execute side provided by above-mentioned each method embodiment
Method, for example,
After receiving the TAU request message that the UE under talking state is initiated, location update message is sent to HSS；From the HSS
The associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS is extracted in the location updating confirmation message of return；Receive base
After the switching request that station reports, the eSRVCC switching request message that the STNSR of ATCF is diffused out described in carrying is sent to eMSC, so that
The eMSC based on diffused out described in the STNSR for diffusing out ATCF and the addressing of preconfigured neighbouring ATCF information ATCF and with institute
State diffuse out ATCF complete together eSRVCC switching.
Alternatively, the current associated location updating for diffusing in mobile management entity MME transmission of UE received under talking state disappears
Breath；To the location updating for diffusing in MME return and carrying the associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS
Confirmation message, so that the MME that diffuses in initiates eSRVCC switching request message to eMSC based on the STNSR for diffusing out ATCF.
Alternatively, when the current associated carrying UE registration for diffusing in MME transmission of UE under reception talking state diffuses out IMS
The eSRVCC switching request message of the associated STNSR for diffusing out ATCF；According to preconfigured neighbouring ATCF information, determining and institute
State the corresponding address ATCF STNSR for diffusing out ATCF；It is routed to according to the address ATCF and diffuses out ATCF, and diffused out with described
ATCF completes eSRVCC switching together.
In addition, the logical order in above-mentioned memory can be realized and as independence by way of SFU software functional unit
Product when selling or using, can store in a computer readable storage medium.Based on this understanding, of the invention
Technical solution substantially the part of the part that contributes to existing technology or the technical solution can be with software in other words
The form of product embodies, which is stored in a storage medium, including some instructions use so that
One computer installation (can be personal computer, server or network equipment etc.) executes each embodiment institute of the present invention
State all or part of the steps of method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can be with
Store the medium of program code.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer installation (can be personal computer, server or network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of trans-regional call handling method characterized by comprising
After receiving the tracing section updating TAU request message that the user equipment (UE) under talking state is initiated, to ownership place subscription data
Server HSS sends location update message；
Pass when the UE registration diffuses out IP multimedia subsystem IMS is extracted from the location updating confirmation message that the HSS is returned
The single wireless Session Hand-off number STNSR for diffusing out Session Hand-off control function ATCF of connection；
After receiving the switching request that base station reports, is sent to enhanced mobile switching centre eMSC and diffuse out ATCF's described in carrying
The enhancing single wireless voice calling continuity eSRVCC switching request message of STNSR, so that the eMSC is based on described diffuse out
ATCF is diffused out described in the STNSR of ATCF and the addressing of preconfigured neighbouring ATCF information and is completed together with ATCF with described diffuse out
ESRVCC switching.
2. the method according to claim 1, wherein further include:
After end of conversation, the insertion subscription data message that the HSS is sent is received, is carried in the insertion subscription data message
The associated STNSR for diffusing in ATCF when diffusing in IMS described in the UE registration.
3. a kind of trans-regional call handling method characterized by comprising
Receive the current associated location update message for diffusing in mobile management entity MME transmission of the UE under talking state；
To the location updating for diffusing in MME return and carrying the associated STNSR for diffusing out ATCF when the UE registration diffuses out IMS
Confirmation message, so that the MME that diffuses in initiates eSRVCC switching request message to eMSC based on the STNSR for diffusing out ATCF.
4. according to the method described in claim 3, it is characterized by further comprising:
The STNSR update message that service set and continuous application server S CC AS are sent is received, in the STNSR update message
The associated STNSR for diffusing in ATCF when diffusing in IMS comprising UE registration；
The received STNSR for diffusing in ATCF is replaced into previously stored STNSR, and will carry and described diffuse in ATCF's
The insertion subscription data message of STNSR diffuses in MME described in being sent to.
5. a kind of trans-regional call handling method characterized by comprising
It receives the current associated carrying UE registration for diffusing in MME transmission of the UE under talking state and diffuses out associated when IMS overflow
The eSRVCC switching request message of the STNSR of ATCF out；
According to preconfigured neighbouring ATCF information, the address ATCF corresponding with the STNSR for diffusing out ATCF is determined；
It is routed to according to the address ATCF and diffuses out ATCF, and complete eSRVCC switching together with ATCF with described diffuse out.
6. a kind of mobile management entity characterized by comprising
Position updating request unit sends position to HSS after receiving the TAU request message that the UE under talking state is initiated
Update message；
Forwarding number extraction unit is diffused out for extracting the UE registration from the location updating confirmation message that the HSS is returned
The associated STNSR for diffusing out ATCF when IMS；
Call handover request unit, the eSRVCC switching request for sending the STNSR for diffusing out ATCF described in carrying to eMSC disappear
Breath, so that the eMSC diffuses out the STNSR of ATCF according to and preconfigured neighbouring ATCF information is addressed to described diffuse out
ATCF simultaneously completes eSRVCC switching with described diffuse out together with ATCF.
7. a kind of ownership place subscription data server characterized by comprising
Location updating receiving unit disappears for receiving the current associated location updating for diffusing in MME transmission of the UE under talking state
Breath；
Location updating feedback unit, for diffusing in MME return to described and carrying associated when UE registration diffuses out IMS diffuse out
The location updating confirmation message of the STNSR of ATCF, so that the MME that diffuses in is sent out based on the STNSR for diffusing out ATCF to eMSC
Play eSRVCC switching request message.
8. a kind of enhanced mobile switching centre characterized by comprising
Call handover request receiving unit, for receiving the current associated carrying institute for diffusing in MME transmission of the UE under talking state
State the eSRVCC switching request message of the associated STNSR for diffusing out ATCF when UE registration diffuses out IMS；
ATCF address lookup unit, for obtaining the address ATCF corresponding with the STNSR for diffusing out ATCF using DNS query；
Switching treatmenting unit is called, diffuses out ATCF for routing to according to the address ATCF, and diffuse out together with ATCF with described
Complete eSRVCC switching.
9. a kind of electronic equipment, which is characterized in that including processor, memory and bus, in which:
The processor, the memory complete mutual communication by bus；
The processor calls the computer program in memory, to execute the method as described in claim 1-5 any one
The step of.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
It realizes when execution such as the step of claim 1-5 any one the method.
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