CN104427560B - Single radio voice call continuity handover configurations method, switching method and equipment - Google Patents
Single radio voice call continuity handover configurations method, switching method and equipment Download PDFInfo
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- CN104427560B CN104427560B CN201310382267.7A CN201310382267A CN104427560B CN 104427560 B CN104427560 B CN 104427560B CN 201310382267 A CN201310382267 A CN 201310382267A CN 104427560 B CN104427560 B CN 104427560B
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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
- H04W36/00224—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 between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
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Abstract
The present invention discloses configuration method, switching method and the equipment of a kind of single radio voice call continuity switching, wherein, the switching method includes: to configure to the adjacent area targeted land wireless access network (UTRAN) ability, and corresponding configuration information, which is included in the ability of the adjacent area UTRAN, increases instruction information；The instruction information is the instruction the information whether adjacent area UTRAN supports session initiation protocol (SIP)；When initiating single radio voice call continuity (SRVCC) switching flow, the instruction the information whether adjacent area UTRAN supports SIP is sent；The instruction the information whether adjacent area UTRAN supports SIP is received, whether decision is sent to UTRAN for SIP business and executes switching.Using the present invention, at least solve the problems, such as SRVCC switching waste of resource, do not support in the case where lead to handover failure.
Description
Technical field
The present invention relates to wireless communication technique field more particularly to a kind of single radio voice call continuity (SRVCC,
Single Radio Voice Call Continuity) switching configuration method, switching method and equipment.
Background technique
SRVCC is third generation partner program (3GPP, Third Generation Partnership Project)
A kind of LTE speech (VoLTE, Voice-over-LTE) the voice business continuity scheme proposed is used primarily to solving to work as
Family equipment (UE, User Equipment) long term evolution (LTE, Long Term Evolution) network and 3G/2G network it
Between when moving, the problem of how guaranteeing continuous voice call, i.e. guarantee UE is in IP multimedia subsystem (IMS, IP
Multimedia Subsystem) control IP speech (VoIP, Voice over Internet Protocol) voice and electricity
Smoothly switching between road exchange (CS, Circuit Switching) domain voice.
There are different real-time service and non-real time service in IMS, audio call and video call are real-time services,
Instant message, RCS business etc. are non-real time services.
Two-way is established for the VOIP in real-time IMS business, IMS to carry: speech bearer service class indication (QCI,
QoS Class Identifier)=1 carrying and session initiation protocol (SIP, Session Initiation
Protocol it) is carried on the carrying of QCI=5, wherein SIP carries session control protocol.
For non real-time nature IMS business, which can directly be carried on SIP (carryings of QCI=5).
According to the default value of Current protocol, enhance UMTS terrestrial radio access network network (E-UTRAN, Evolved
Universal terrestrial radio access network) in using QCI=5 carry IMS signaling (IMS
Signalling), IMS signalling may carry session initiation protocol and non real-time nature IMS business.
It is described according to current SRVCC agreement, as targeted land wireless access network (UTRAN, Terrestrial Radio
Access Network) ability be do not support VOIP speech, do not support yet packet switch (PS, Packet Switching) switch
When ability, E-UTRAN initiates the only SRVCC to UTRAN comprising CS domain business and switches.
When target UTRAN ability is not support VOIP speech, support PS HO ability, source ENODEB is in SRVCC HO
" CS+PS " is indicated in Indication IE, and switches voice bearer to the domain CS of UTRAN, switches its in addition to voice bearer
He is carried to the ps domain of UTRAN.
Understand according to Current protocol: in the SRVCC switching flow of CS+PS, all PS except QCI=1 can be carried,
The ps domain of target UTRAN is all switched to including carrying QCI=5 where SIP.It is needed in the Incoming RELOCATION REQUEST message that RNC is received
The business to be established has: the domain CS voice service；Ps domain: common PS business+SIP business.
According to current SRVCC agreement, such as Fig. 1: being to be not necessarily to when voice service is switched to circuit domain speech from the VOIP of ps domain
IMS signalling carrying is switched to UTRAN's.
The problem of inventor is had found during implementing the embodiment of the present invention, is at least existed using current SRVCC agreement
It is as follows:
UTRAN is directly accessed with UE establishes the domain CS speech and compare, cut by CS+PS SRVCC switching flow from E-UTRAN
The voice service for changing to UTRAN always needs to establish a SIP business more.
With selling fast for smart phone, the user of mobile broadband network and flow burst increase so that UTRAN network without
Line resource is nervous.Each CS speech will at least carry out the UTRAN network of radio resource anxiety with a SIP business is established
It says, wastes radio resource, so as to wireless capacity, the business throughput etc. for reducing UTRAN.
SIP business is introduced by IMS, but some tradition UTRAN does not support SIP business, when UTRAN network does not support SIP
When business, UTRAN can return to ps domain service switching failure response, so as to cause CS+PS SRVCC switching flow to fail.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of configuration method of SRVCC switching, switching method and setting
It is standby, at least solve the problems, such as above-mentioned SRVCC switching waste of resource, do not support in the case where lead to handover failure.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of configuration method of single radio voice call continuity switching, which comprises
The adjacent area targeted land wireless access network UTRAN ability is configured, Lai Shixian single radio voice call is continuous
Property SRVCC instruction；
Corresponding configuration information, which is included in the ability of the adjacent area UTRAN, increases instruction information；The instruction information is UTRAN adjacent
Whether the instruction information of Session initiation protocol SIP is supported in area.
A kind of method of single radio voice call continuity switching, which comprises
The adjacent area targeted land wireless access network UTRAN ability is configured, corresponding configuration information is included in UTRAN neighbour
Increase instruction information in area's ability；The instruction information is whether the adjacent area UTRAN supports the instruction of Session initiation protocol SIP to believe
Breath；
When initiating single radio voice call continuity SRVCC switching flow, send whether the adjacent area UTRAN is supported
The instruction information of SIP；
Receive the instruction the information whether adjacent area UTRAN supports SIP, whether decision by SIP business is sent to UTRAN
Execute switching.
A kind of method of single radio voice call continuity switching, which comprises
The adjacent area targeted land wireless access network UTRAN ability is configured, corresponding configuration information is included in UTRAN neighbour
Increase instruction information in area's ability；The instruction information is whether the adjacent area UTRAN supports the instruction of Session initiation protocol SIP to believe
Breath；
When initiating single radio voice call continuity SRVCC switching flow, send whether the adjacent area UTRAN is supported
The instruction information of SIP.
Wherein, the foundation configured to the adjacent area targeted land wireless access network UTRAN ability specifically includes following
Any one:
If the radio resource of UTRAN network is nervous and is more than preset value, configures and be not switched to the corresponding carrying of SIP
UTRAN；
If IMS system does not dispose non-real-time service or UTRAN and do not support IMS non-real-time service, will not configure
The corresponding speech bearer service class indication QCI carrying of SIP is switched to UTRAN；
If IMS system deployment non-real-time service and expected IMS non-real-time service is kept in SRVCC handoff procedure
Continuity, then the corresponding QCI carrying of SIP is switched to UTRAN by configuration.
A kind of method of single radio voice call continuity switching, which comprises
Receive the instruction the information whether adjacent area targeted land wireless access network UTRAN supports Session initiation protocol SIP, root
Whether support the instruction information of SIP according to the adjacent area UTRAN, whether decision by SIP business is sent to UTRAN to execute switching.
Wherein, whether the instruction information that SIP whether is supported according to the adjacent area UTRAN, decision send SIP business
Switching is executed to UTRAN, is specifically included:
If SRVCC switching type is only circuit switching (CS) ONLY, according to existing CS ONLY flow processing；
If SRVCC switching type be circuit switching combination packet switch CS+PS, according to the adjacent area UTRAN whether
Support SIP instruction information decision whether by SIP service switching into UTRAN.
A kind of equipment of single radio voice call continuity switching, the equipment are located at the side E-UTRAN, comprising:
Configuration unit, for being configured to the adjacent area targeted land wireless access network UTRAN ability, corresponding configuration information
It is included in the ability of the adjacent area UTRAN and increases instruction information；The instruction information is whether the adjacent area UTRAN supports conversation initialization to assist
Discuss the instruction information of SIP；
Transmission unit, in the case where initiating SRVCC switching flow, sending the finger whether adjacent area UTRAN supports SIP
Show information to CN.
Wherein, the configuration unit is further used for carrying out the adjacent area UTRAN ability the foundation packet of configuration use
It includes:
If the radio resource of UTRAN network is nervous and is more than preset value, configures and be not switched to the corresponding carrying of SIP
UTRAN；Alternatively,
If IMS system does not dispose non-real-time service or UTRAN and do not support IMS non-real-time service, will not configure
The corresponding speech bearer service class indication QCI carrying of SIP is switched to UTRAN；Alternatively,
If IMS system deployment non-real-time service and expected IMS non-real-time service is kept in SRVCC handoff procedure
Continuity, then the corresponding QCI carrying of SIP is switched to UTRAN by configuration.
A kind of equipment of single radio voice call continuity switching, the equipment are located at the side CN, and the equipment includes:
Receiving unit, for receiving whether the adjacent area targeted land wireless access network UTRAN supports Session initiation protocol SIP
Instruction information；
Handover decisions unit, for whether supporting the instruction information of SIP according to the adjacent area UTRAN, whether decision is by SIP
Business is sent to UTRAN to execute switching.
Wherein, the handover decisions unit, if being further used for SRVCC switching type is only circuit switching (CS) ONLY,
Then according to existing CS ONLY flow processing；Alternatively, if SRVCC switching type is circuit switching combination packet switch CS+
PS, then according to the adjacent area UTRAN whether support SIP instruction information decision whether by SIP service switching into UTRAN.
Wherein, the receiving unit is specially the mobility management entity MME in the CN, for receiving E-UTRAN hair
Whether the instruction information of Session initiation protocol SIP is supported in the adjacent area UTRAN sent；
The handover decisions unit is specially the general packet wireless service support node SGSN in the CN, is used for basis
The instruction of Session initiation protocol SIP whether is supported to believe in the adjacent area UTRAN in intersystem handover request that the MME is sent
Cease decision whether by SIP service switching into UTRAN.
Wherein, the SGSN, is further used for whether decision is specifically switched to SIP business in RNC, and Xiang Suoshu RNC is asked
Seek distribution PS business related resource；The PS business related resource of distribution is received, the PS business correlation including the distribution is sent and provides
The relocation response in source gives the MME.
Wherein, the receiving unit and the handover decisions unit are all located at the mobility management entity MME in the CN
In.
The present invention configures the adjacent area UTRAN ability, Lai Shixian SRVCC instruction；Corresponding configuration information is included in
Increase instruction information in the ability of the adjacent area UTRAN；The instruction information is whether the adjacent area UTRAN supports Session initiation protocol SIP
Instruction information.Decision-making foundation can be provided to switching by the instruction information, at least solve above-mentioned SRVCC switching waste
Resource, the problem of leading to handover failure in the case where not supporting.
Detailed description of the invention
Fig. 1 is the overall high level schematic diagram of the existing SRVCC switching from E-UTRAN to UTRAN/GERAN；
Fig. 2 is the implementation process schematic diagram of switching method of the present invention；
Fig. 3 is the present invention from E-UTRAN to the SRVCC for the UTRAN for having DTM switching schematic diagram；
Fig. 4 is the present invention from E-UTRAN to the SRVCC for the UTRAN for having DTM switching schematic diagram.Specific embodiment
The implementation of technical solution is described in further detail with reference to the accompanying drawing.
Scheme provided by the invention be in a kind of control SRVCC switching flow EUTRAN and CN whether by VOIP with signaling
The SIP carrying at place is switched to UTRAN network, indicates information by increasing, and whether the instruction adjacent area UTRAN supports SIP, so that fortune
Seeking quotient can be according to the radio resource tensity and IMS service deployment situation, UTRAN network of UTRAN network to SIP business
Support situation etc. flexibly to control SRVCC strategy, thus operator avoided by this control means SRVCC switching flow to
The possible problem of UTRAN network capacity to avoid waste of resource, and avoids causing SRVCC to cut in the case where not supporting
The problem of change of current journey fails.
The invention mainly comprises the following contents:
1, for the angle of the SRVCC configuration method switched, The inventive process provides E-UTRAN systems to be
The configuration information of UTRAN configuration, the configuration information are included in one instruction information of increase in the ability of the adjacent area UTRAN, instruction
Whether SIP is supported in the adjacent area UTRAN.
2, for the angle of the SRVCC method switched, The inventive process provides E-UTRAN systems to match for UTRAN
The configuration information set, the configuration information are included in one instruction information of increase in the ability of the adjacent area UTRAN, indicate the adjacent area UTRAN
Whether SIP is supported；When initiating SRVCC switching flow, send whether the adjacent area UTRAN supports the instruction information of SIP to CN；In the CN
When handling the SRVCC switching flow of CS+PS, the instruction of SIP whether is supported according to the adjacent area UTRAN received from E-UTRAN system
Whether information, decision by SIP business are sent to UTRAN, specifically can be sent to UTRAN by RELOCATION REQUEST message.
3, from the angle of the SRVCC method switched, for E-UTRAN system side, the method comprise the steps that right
The adjacent area UTRAN ability is configured, and corresponding configuration information, which is included in the ability of the adjacent area UTRAN, increases instruction information；The finger
Show information is the instruction the information whether adjacent area UTRAN supports Session initiation protocol SIP；It is continuous to initiate single radio voice call
When property SRVCC switching flow, the instruction the information whether adjacent area UTRAN supports SIP is sent.
4, from the angle of the SRVCC method switched, for CN system side, the method comprise the steps that initiating list
When radio telephone voice call continuity SRVCC switching flow, after sending the instruction the information whether adjacent area UTRAN supports SIP,
The instruction the information whether adjacent area UTRAN supports SIP is received, whether decision is sent to UTRAN for SIP business and executes switching,
Specifically UTRAN can be sent to by RELOCATION REQUEST message.
5, from the angle of the SRVCC equipment switched, for E-UTRAN system, inventive device provides be directed to cut
The E-UTRAN system of control is changed, for configuring to the adjacent area UTRAN ability, corresponding configuration information is included in configuration unit
Increase instruction information in the ability of the adjacent area UTRAN；The instruction information is whether the adjacent area UTRAN supports Session initiation protocol SIP
Instruction information；Transmission unit is used to send the adjacent area UTRAN in the case where the E-UTRAN system initiates SRVCC switching flow
Whether support the instruction information of SIP to CN.
6, from the angle of the SRVCC equipment switched, for CN system, inventive device provides be directed to switching control
CN system, in the SRVCC switching flow of CN processing CS+PS, receiving unit is used for according to receiving from E-UTRAN system
Whether the adjacent area UTRAN supports the instruction information of SIP, and whether decision by SIP business is sent to UTRAN, specifically can be by resetting
Position request message is sent to UTRAN.
The process of the switching method, as shown in Figure 2, comprising the following steps:
Step 11: the adjacent area UTRAN ability being configured, increases instruction information in the ability of the adjacent area UTRAN；The instruction
Information is the instruction the information whether adjacent area UTRAN supports Session initiation protocol SIP.
Specifically, increasing the instruction whether adjacent area UTRAN supports SIP in the E-UTRAN configuration adjacent area UTRAN ability；This refers to
The value shown is BOOL variable.
Step 12: when initiating single radio voice call continuity SRVCC switching flow, sending the adjacent area UTRAN is
The no instruction information for supporting SIP.
Specifically, when E-UTRAN receives SRVCC switching of the UE measurement report decision initiation to UTRAN, by the adjacent area UTRAN
The instruction information of SIP whether is supported to pass to CN.
Step 13: receiving the instruction the information whether adjacent area UTRAN supports SIP, whether decision sends SIP business
Switching is executed to UTRAN.
Specifically, after CN receives above- mentioned information, if SRVCC switching type is CS ONLY, according to existing CS
ONLY flow processing；Else if SRVCC switching type is CS+PS, then the instruction of SIP whether is supported to believe according to the adjacent area UTRAN
Breath decides whether SIP service switching into UTRAN.
Remaining the step of, repeats no more with existing SRVCC flow processing, subsequent to have complete embodiment description.
Function achieved by system is repeated no more with method flow description herein.However, it is desirable to be pointed out that: from
The angle of the equipment of SRVCC switching, and when the equipment is located at the system side E-UTRAN, provides the apparatus for switching control
E-UTRAN system, which belongs to the hardware entities of wireless network side；The angle of the equipment switched from SRVCC,
And the equipment, when being located at the system side CN, inventive device provides the CN system for being directed to switching control, which belongs to
The hardware entities of core network side.
The hardware entities for mainly including in CN system are as follows: mobility management entity (MME) is mainly used for realizing the signaling of CN
Processing function；GPRS serving GPRS support node (SGSN), i.e. general packet wireless service support node are mainly used for realizing the master of CN
Complete routing forwarding, mobile management, session management, Logical Link Management, authentication and the encryption of packet data package, ticket produces
The functions such as raw and output.Gateway (S-GW) is mainly used for realizing the data processing function of CN.
Using having the beneficial effect that for the present invention program
Operator is flexibly controlled whether the SIP carrying in E-UTRAN network is switched to UTRAN, by
This saves the radio resource of UTRAN network；And the handover success rate of SRVCC process can be improved.
For the flexible control, specifically, if the radio resource of UTRAN network is nervous, operator can be configured not
The corresponding carrying of SIP is switched to UTRAN.
For the flexible control, specifically, if IMS system does not dispose non-real-time service or UTRAN is not supported
IMS non-real-time service, then operator, which can configure, is not switched to UTRAN for the corresponding QCI carrying of SIP.
For the flexible control, specifically, if IMS system deployment non-real-time service and operator also wishes
IMS non-real-time service keeps continuity in SRVCC handoff procedure, then operator, which can configure, cuts the corresponding QCI carrying of SIP
Change to UTRAN.
It specifically can be to avoid the SRVCC from EUTAN to UTRAN for the radio resource for saving UTRAN network
Process wastes the radio resource of UTRAN, avoids the influence to its wireless traffic handling capacity, wireless traffic capacity etc..
Specifically it can be improved from EUTRAN for the handover success rate for improving SRVCC process and be switched to UTRAN's
The handover success rate of SRVCC process.
Concrete example description is carried out to the present invention below, is to be switched to the SRVCC process of UTRAN scene from E-UTRAN
Example, but implementation of the invention is not limited to the special scenes.
Embodiment 1:
When EUTRAN indicates to initiate the SRVCC switching flow of CS+PS to MME, whether EUTRAN also props up the adjacent area UTRAN
The instruction for holding SIP brings MME, and MME decides whether to require SGSN by SIP service switching to RNC, detailed process such as Fig. 3 institute accordingly
Show, comprising:
The instruction for whether supporting SIP in the adjacent area UTRAN is added in step 101, the adjacent area the UTRAN ability of the side EUTRAN；UE connects
Enter EUTRAN system, establishes IMS voice service.
In the adjacent area the UTRAN ability of the side EUTRAN, whether VOIP is supported existing, if supports the instruction base of PS switching
On plinth, increase whether the adjacent area UTRAN supports the ability of SIP to indicate.
After UE initiates IMS voice service, carry: QCI=1 (carrying of IMS speech), QCI=5 (SIP carrying), QCI=N
(N is default bearing, depending on configuring condition)；
If UE has initiated other PS business, it is also possible to others QCI=M
Step 102, UE are moved to the adjacent area 3G, and reporting measurement reports are triggered to the switching of UTRAN system.
Step 103, EUTRAN send Handover Required to source MME, and wherein SRVCC HO indication refers to
Show be CS+PS SRVCC switching type, while whether the adjacent area UTRAN is supported the instruction of SIP also to bring MME by source EUTRAN.
Step 104, MME isolate speech carrying and non-voice PS carrying from PS carrying, respectively to MSC SERVER
Out intersystem handover request is initiated with SGSN.
Step 105a, whether MME initiates the PS-CS speech switching request of SRVCC to MSC SERVER, and be promptly to exhale
The label cried.And obtain the security key of CS business；
Step 105b, the PS-CS speech switching request of SRVCC is transmitted to target MSC by MSC SERVER；
Step 105c, target MSC sends CS business Incoming intersystem handover request to Target RNC, it is desirable that distribution CS business
Related resource.
Step 106a-107b, if there is the intersystem handover of concurrent non-voice PS business, then source MME is to target SGSN
Switching request between initiation PS operation system, target SGSN send PS business Incoming intersystem handover request to Target RNC, it is desirable that point
With PS business related resource, PS resource allocation result is returned to SGSN/MME by Target RNC；
If whether the adjacent area UTRAN supports the TRUE that is designated as of SIP, source MME to be sent to target SGSN instruction and need to cut
Change to RNC business include speech carrying except all bearer services: the business in all carryings i.e. in addition to QCI=1,
Include:
QCI=5 (SIP carrying), SGSN is designated as SIP business in the Incoming RELOCATION REQUEST message for being sent to RNC；
QCI=N (N is default bearing, and N is depending on configuring condition), SGSN disappear in the Incoming re-positioning request for being sent to RNC
In breath, it is designated as universal PS business, without special instruction.
QCI=M(M is the corresponding carrying of data service that UE is initiated), SGSN is in the Incoming re-positioning request for being sent to RNC
In message, it is designated as universal PS business, without special instruction.
RNC needs for above-mentioned SIP business and other common PS traffic assignments radio resources.
If whether the adjacent area UTRAN supports the FALSE that is designated as of SIP, source MME to be sent to target SGSN instruction and need to cut
The business for changing to RNC includes all bearer services except speech carrying and SIP: all i.e. in addition to QCI=1 and QCI=5 hold
It carries, comprising:
QCI=N (N is default bearing, and N is depending on configuring condition), SGSN disappear in the Incoming re-positioning request for being sent to RNC
In breath, it is designated as universal PS business, without special instruction.
QCI=M(M is the corresponding carrying of data service that UE is initiated), SGSN is in the Incoming re-positioning request for being sent to RNC
In message, it is designated as universal PS business, without special instruction.
RNC needs for above-mentioned common PS traffic assignments radio resource.
Step 108a, Target RNC is by CS resource allocation result (with Target to Source Transparent
Container form) pass through RELOCAITON REQUEST ACK message informing target MSC；
Step 108b, it includes Target to Source that target MSC, which sends Prepare Handover Response(,
Transparent Container) give MSC SERVER；
Step 108c, circuit domain link is directly established in the relevant MGW of MSC SERVER and target MSC.
Illustrate: similar with DTM switching if it is the intersystem handover of the concurrent PS of CS, Target RNC returns to SGSN's in 7a
Target RNC returns to the Target to of target MSC in Target to Source Transparent Container and 8a
Source Transparent Container content is identical, all includes CS and PS business information.
Step 109, MSC SERVER initiate session conversion process to IMS.
Step 110, session conversion process make VOIP packet be switched to CS access.
Step 111, original IMS access are released.
The PS-CS speech handoff response of SRVCC is sent to MME by step 112, MSC SERVER.
Step 113, MME collect the PS-CS speech handoff response and PS handoff response (if any) of SRVCC, send
Handover Command (including Target to Source Transparent Container) is to E-UTRAN.
Switching command is sent to UE by step 114, E-UTRAN.
Step 115, UE are switched to UTRAN system.
Step 116, the processing of change detection process.UE sends Handover Complete and penetrates target to MSC SERVER(
RNC/ target MSC).
Step 117, speech switching completion processing.Target RNC sends Relocation Complete and gives MSC SERVER
(penetrating target MSC), MSC SERVER, which establishes circuit domain speech, to be completed and sends SRVCC PS to CS Complete
Notification is to MME.
Step 118, concurrent PS switching completion processing.If there is concurrent PS handoff procedure, then Target RNC is sent
Relocation Complete gives target SGSN, this message of target SGSN transparent transmission is to MME；If there is the PS-CS speech of SRVCC
Handoff procedure, SGSN needs modify to the session for having been switched to the domain CS.
Step 119, if it is urgent call, source MME or MSC SERVER needs to send Subscriber Location
Report message carrys out support position continuity to GMLC.
Embodiment 2:
When EUTRAN indicates to initiate the SRVCC switching flow of CS+PS to MME, whether EUTRAN also props up the adjacent area UTRAN
The instruction for holding SIP brings MME, and MME decides whether to require SGSN by SIP service switching to RNC, detailed process such as Fig. 4 institute accordingly
Show, comprising:
The instruction for whether supporting SIP in the adjacent area UTRAN is added in step 211, the adjacent area the UTRAN ability of the side EUTRAN；UE connects
Enter EUTRAN system, establishes IMS voice service.
In the adjacent area the UTRAN ability of the side EUTRAN, whether VOIP is supported existing, if supports the instruction base of PS switching
On plinth, increase whether the adjacent area UTRAN supports the ability of SIP to indicate.
After UE initiates IMS voice service, carry: QCI=1 (carrying of IMS speech), QCI=5 (SIP carrying), QCI=N
(N is default bearing, depending on configuring condition)；
If UE has initiated other PS business, it is also possible to others QCI=M
Step 212, UE are moved to the adjacent area 3G, and reporting measurement reports are triggered to the switching of UTRAN system.
Step 213, EUTRAN send Handover Required to source MME, and wherein SRVCC HO indication refers to
Show be CS+PS SRVCC switching type, while whether the adjacent area UTRAN is supported the instruction of SIP also to bring MME by source EUTRAN.
Step 214, MME isolate speech carrying and non-voice PS carrying from PS carrying, respectively to MSC SERVER
Out intersystem handover request is initiated with SGSN.
Step 215a, whether MME initiates the PS-CS speech switching request of SRVCC to MSC SERVER, and be promptly to exhale
The label cried.And obtain the security key of CS business；
Step 215b, the PS-CS speech switching request of SRVCC is transmitted to target MSC by MSC SERVER；
Step 215c, target MSC sends CS business Incoming intersystem handover request to Target RNC, it is desirable that distribution CS business
Related resource.
Step 216a-217b, if there is the intersystem handover of concurrent non-voice PS business, then source MME is to target SGSN
Switching request between initiation PS operation system, while whether supporting the instruction of SIP also to bring target SGSN the adjacent area UTRAN.Target
SGSN sends PS business Incoming intersystem handover request to Target RNC, it is desirable that distribution PS business related resource, Target RNC is by PS
Resource allocation result returns to SGSN/MME.
If whether the adjacent area UTRAN supports the TRUE that is designated as of SIP, target SGSN to be sent to the Incoming reorientation of RNC
It includes all bearer services except speech carrying that instruction, which needs to be switched to the business of RNC, in request message: i.e. in addition to QCI=1
All carryings on business, comprising:
QCI=5 (SIP carrying), target SGSN is designated as SIP industry in the Incoming RELOCATION REQUEST message for being sent to RNC
Business；
QCI=N (N is default bearing, and N is depending on configuring condition), target SGSN are asked in the Incoming reorientation for being sent to RNC
It asks in message, universal PS business is designated as, without special instruction.
QCI=M(M is the corresponding carrying of data service that UE is initiated), target SGSN is in the Incoming reorientation for being sent to RNC
In request message, it is designated as universal PS business, without special instruction.
RNC needs for above-mentioned SIP business and other common PS traffic assignments radio resources.
If whether the adjacent area UTRAN supports the FALSE that is designated as of SIP, target SGSN to indicate to need to be switched to the industry of RNC
Business includes all bearer services except speech carrying and SIP: all carryings i.e. in addition to QCI=1 and QCI=5, comprising:
QCI=N (N is default bearing, and N is depending on configuring condition), SGSN disappear in the Incoming re-positioning request for being sent to RNC
In breath, it is designated as universal PS business, without special instruction.
QCI=M(M is the corresponding carrying of data service that UE is initiated), SGSN is in the Incoming re-positioning request for being sent to RNC
In message, it is designated as universal PS business, without special instruction.
RNC needs for above-mentioned common PS traffic assignments radio resource.
Step 218a, Target RNC is by CS resource allocation result (with Target to Source Transparent
Container form) pass through RELOCAITON REQUEST ACK message informing target MSC；
Step 218b, it includes Target to Source that target MSC, which sends Prepare Handover Response(,
Transparent Container) give MSC SERVER；
Step 218c, circuit domain link is directly established in the relevant MGW of MSC SERVER and target MSC.
Illustrate: similar with DTM switching if it is the intersystem handover of the concurrent PS of CS, Target RNC returns to SGSN's in 7a
Target RNC returns to the Target to of target MSC in Target to Source Transparent Container and 8a
Source Transparent Container content is identical, all includes CS and PS business information.
Step 219, MSC SERVER initiate session conversion process to IMS.
Step 220, session conversion process make VOIP packet be switched to CS access.
Step 221, original IMS access are released.
The PS-CS speech handoff response of SRVCC is sent to MME by step 222, MSC SERVER.
Step 223, MME collect the PS-CS speech handoff response and PS handoff response (if any) of SRVCC, send
Handover Command (including Target to Source Transparent Container) is to E-UTRAN.
Switching command is sent to UE by step 224, E-UTRAN.
Step 225, UE are switched to UTRAN system.
Step 226, the processing of change detection process.UE sends Handover Complete and penetrates target to MSC SERVER(
RNC/ target MSC).
Step 227, speech switching completion processing.Target RNC sends Relocation Complete and gives MSC SERVER
(penetrating target MSC), MSC SERVER, which establishes circuit domain speech, to be completed and sends SRVCC PS to CS Complete
Notification is to MME.
Step 228, concurrent PS switching completion processing.If there is concurrent PS handoff procedure, then Target RNC is sent
Relocation Complete gives target SGSN, this message of target SGSN transparent transmission is to MME；If there is the PS-CS speech of SRVCC
Handoff procedure, SGSN needs modify to the session for having been switched to the domain CS.
Step 229, if it is urgent call, source MME or MSC SERVER needs to send Subscriber Location
Report message carrys out support position continuity to GMLC.
For convenience of description, the QCI configuration quoted in examples detailed above uses the default value of agreement, it may be assumed that QCI=5 carries IMS
signalling；Also assume that default bearing is not QCI=5.
If the QCI that IMS signalling is carried in actual disposition be other values or default bearing be also QCI=
5, application effect of the invention will not be influenced.
The example of the SRVCC switching for EUTRAN to the UTRAN that the embodiment of the present invention takes, thought are equally applicable to
ETURAN is switched to the SRVCC hand-off process of GERAN.
If the module integrated described in the embodiment of the present invention is realized in the form of software function module and as independent production
Product when selling or using, also can store in a computer readable storage medium.Based on this understanding, the present invention is real
Applying the technical solution of example, substantially the part that contributes to existing technology can embody in the form of software products in other words
Come, which is stored in a storage medium, including some instructions are used so that a computer equipment (can
To be personal computer, server or network equipment etc.) execute the whole or portion of each embodiment the method for the present invention
Point.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), deposits at random
The various media that can store program code such as access to memory (RAM, Random Access Memory), magnetic or disk.
It is combined in this way, the embodiment of the present invention is not limited to any specific hardware and software.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (13)
1. a kind of configuration method of single radio voice call continuity switching, which is characterized in that the described method includes:
The adjacent area targeted land wireless access network UTRAN ability is configured, to realize the single wireless of the adjacent area the target UTRAN
Phone voice call continuity SRVCC instruction；
Corresponding configuration information, which is included in the ability of the adjacent area UTRAN, increases instruction information；The instruction information is that the adjacent area UTRAN is
The no instruction information for supporting Session initiation protocol SIP.
2. a kind of method of single radio voice call continuity switching, which is characterized in that the described method includes:
The adjacent area targeted land wireless access network UTRAN ability is configured, corresponding configuration information is included in the adjacent area UTRAN energy
Increase instruction information in power；The instruction information is the instruction the information whether adjacent area UTRAN supports Session initiation protocol SIP；
When initiating single radio voice call continuity SRVCC switching flow, send whether the adjacent area UTRAN supports SIP's
Indicate information；
The instruction the information whether adjacent area UTRAN supports SIP is received, whether decision, which is sent to UTRAN for SIP business, executes
Switching.
3. a kind of method of single radio voice call continuity switching, which is characterized in that the described method includes:
The adjacent area targeted land wireless access network UTRAN ability is configured, corresponding configuration information is included in the adjacent area UTRAN energy
Increase instruction information in power；The instruction information is the instruction the information whether adjacent area UTRAN supports Session initiation protocol SIP；
When initiating single radio voice call continuity SRVCC switching flow, send whether the adjacent area UTRAN supports SIP's
Indicate information.
4. according to the method described in claim 3, it is characterized in that, described to the adjacent area targeted land wireless access network UTRAN energy
Power configured foundation specifically include it is following any one:
If the radio resource of UTRAN network is nervous and is more than preset value, configures and be not switched to the corresponding carrying of SIP
UTRAN；
If IMS system does not dispose non-real-time service or UTRAN and do not support IMS non-real-time service, configure SIP pairs not
The speech bearer service class indication QCI carrying answered is switched to UTRAN；
If IMS system deployment non-real-time service and expected IMS non-real-time service keeps continuous in SRVCC handoff procedure
Property, then the corresponding QCI carrying of SIP is switched to UTRAN by configuration.
5. a kind of method of single radio voice call continuity switching, which is characterized in that the described method includes:
The instruction the information whether adjacent area targeted land wireless access network UTRAN supports Session initiation protocol SIP is received, according to institute
State the instruction the information whether adjacent area UTRAN supports SIP, whether decision by SIP business is sent to UTRAN to execute switching.
6. according to the method described in claim 5, it is characterized in that, the finger for whether supporting SIP according to the adjacent area UTRAN
Show information, whether decision by SIP business is sent to UTRAN to execute switching, it specifically includes:
If SRVCC switching type is only circuit switching (CS) ONLY, according to existing CS ONLY flow processing；
If SRVCC switching type is circuit switching combination packet switch CS+PS, whether supported according to the adjacent area UTRAN
The instruction information decision of SIP whether by SIP service switching into UTRAN.
7. a kind of equipment of single radio voice call continuity switching, which is characterized in that the equipment is located at the side E-UTRAN,
Include:
Configuration unit, for configuring to the adjacent area targeted land wireless access network UTRAN ability, corresponding configuration information includes
Increase instruction information in the ability of the adjacent area UTRAN；The instruction information is whether the adjacent area UTRAN supports session initiation protocol
The instruction information of SIP；
Transmission unit, for sending whether the adjacent area UTRAN supports the instruction of SIP to believe in the case where initiating SRVCC switching flow
It ceases to CN.
8. equipment according to claim 7, which is characterized in that the configuration unit is further used for adjacent to the UTRAN
Area's ability carry out configuration use foundation include:
If the radio resource of UTRAN network is nervous and is more than preset value, configures and be not switched to the corresponding carrying of SIP
UTRAN；Alternatively,
If IMS system does not dispose non-real-time service or UTRAN and do not support IMS non-real-time service, configure SIP pairs not
The speech bearer service class indication QCI carrying answered is switched to UTRAN；Alternatively,
If IMS system deployment non-real-time service and expected IMS non-real-time service keeps continuous in SRVCC handoff procedure
Property, then the corresponding QCI carrying of SIP is switched to UTRAN by configuration.
9. a kind of equipment of single radio voice call continuity switching, which is characterized in that the equipment is located at the side CN, described to set
It is standby to include:
Whether receiving unit supports the finger of Session initiation protocol SIP for receiving the adjacent area targeted land wireless access network UTRAN
Show information；
Handover decisions unit, for whether supporting the instruction information of SIP according to the adjacent area UTRAN, whether decision is by SIP business
UTRAN is sent to execute switching.
10. equipment according to claim 9, which is characterized in that the handover decisions unit, if be further used for
SRVCC switching type is only circuit switching (CS) ONLY, then according to existing CS ONLY flow processing；Alternatively, if SRVCC is cut
Whether changing type is circuit switching combination packet switch CS+PS, then support the instruction information of SIP to determine according to the adjacent area UTRAN
Plan whether by SIP service switching into UTRAN.
11. equipment according to claim 9 or 10, which is characterized in that the receiving unit is specially the shifting in the CN
Whether mobility management entity MME, the adjacent area UTRAN for receiving E-UTRAN transmission support Session initiation protocol SIP
Indicate information；
The handover decisions unit is specially the general packet wireless service support node SGSN in the CN, for according to
The instruction information of Session initiation protocol SIP whether is supported to determine in the adjacent area UTRAN in intersystem handover request that MME is sent
Plan whether by SIP service switching into UTRAN.
12. equipment according to claim 11, which is characterized in that whether the SGSN is further used for decision by SIP industry
Business is specifically switched in RNC, Xiang Suoshu RNC request distribution PS business related resource；Receive the PS business related resource of distribution, hair
Send the relocation response of the PS business related resource including the distribution to the MME.
13. equipment according to claim 9 or 10, which is characterized in that the receiving unit and the handover decisions unit
All it is located in the mobility management entity MME in the CN.
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| CN201310382267.7A CN104427560B (en) | 2013-08-28 | 2013-08-28 | Single radio voice call continuity handover configurations method, switching method and equipment |
| PCT/CN2014/077939 WO2014173347A1 (en) | 2013-08-28 | 2014-05-20 | Single radio voice call continuity handover configuration method, switching method and device |
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| CN201310382267.7A CN104427560B (en) | 2013-08-28 | 2013-08-28 | Single radio voice call continuity handover configurations method, switching method and equipment |
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| US9930578B2 (en) * | 2015-05-04 | 2018-03-27 | Apple Inc. | Enhanced voice roaming for UE devices associated with a home network without SRVCC |
| WO2017079908A1 (en) * | 2015-11-11 | 2017-05-18 | Qualcomm Incorporated | Systems and methods for preventing single radio voice call continuity failure during the voice over long term evolution call bearer setup phase |
| CN106899952B (en) * | 2015-12-21 | 2021-02-19 | 中兴通讯股份有限公司 | Emergency call switching method and device |
| CN107483755A (en) * | 2016-06-07 | 2017-12-15 | 中兴通讯股份有限公司 | A kind of method of audio call and base station |
| WO2018102970A1 (en) * | 2016-12-05 | 2018-06-14 | 华为技术有限公司 | Method and apparatus for creating voice bearer |
| CN108260143B (en) * | 2016-12-29 | 2021-06-04 | 中国移动通信集团浙江有限公司 | 2G neighbor set adaptation method based on scene eSRVCC service |
| CN110519808B (en) * | 2018-05-21 | 2021-12-07 | 维沃移动通信有限公司 | Method, device and system for interaction between networks |
| CN109548181B (en) * | 2019-01-10 | 2020-11-10 | Oppo广东移动通信有限公司 | Information acquisition method and device, storage medium and mobile terminal |
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| CN101106803A (en) * | 2006-07-13 | 2008-01-16 | 华为技术有限公司 | Method and system for switching between independent networks and keeping call continuity |
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