CN105594250B - PS/CS coordination approach and system and mobile interaction center - Google Patents
PS/CS coordination approach and system and mobile interaction center Download PDFInfo
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- 102000018059 CS domains Human genes 0.000 description 3
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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]
- H04W36/00226—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] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
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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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Abstract
The present invention provides a kind of PS/CS coordination approach and system and mobile interaction center, comprising: MSC determines that the voice communication of UE is caused by SRVCC switching；MSC is at the end of determining the voice communication caused by SRVCC switching, the first TMSI, which is sent, to UE reassigns message, it includes TMSI network element in message that first TMSI, which is reassigned, wherein TMSI network element includes a NRI, and any MSC that the NRI does not share in network in all MSC resource pools where MSC is distributed, so that UE carries the TMSI network element when sending LAU request message, so that the MSC for receiving LAU request message coordinates process according to the NRI triggering PS/CS that TMSI network element includes in LAU request message, the operator in a domain CS is reselected for UE, to solve the problems, such as that it is uncoordinated that SRVCC is switched to the easy existing PS/CS of shared network.
Description
Technical field
The present invention relates to wireless communication techniques, more particularly to one kind to be suitable for single wireless voice calling continuity
The PS/CS coordination approach and system of (Single Radio Voice Call Continuity, abbreviation SRVCC) and mobile friendship
Mutual center.
Background technique
In Generation Mobile Telecommunication System technology (2nd Generation, abbreviation 2G) or 3rd generation mobile communication technology (3rd
Generation, abbreviation 3G) in network, the circuit switching of user equipment (User Equipment, abbreviation UE) in a network
It is mobile to hand over behind the domain (Circuit Switched, abbreviation CS) and the registration of the packet switch domain (Packet Switched, abbreviation PS)
Switching center9 (Mobile Switching Center, abbreviation MSC) identifies (Temporary to UE distribution CS domain temporary mobile subscriber
Mobile Subscriber Identity, abbreviation TMSI), Serving GPRS Support Node (Serving GPRS Support
Node, abbreviation SGSN) give UE distribution ps domain packet TMSI (Packet Temporary Mobile
Subscriber Identity, abbreviation P-TMSI)；In long term evolution (Long Term Evolution, abbreviation LTE), UE
After registering in the lte networks, mobility management entity (Mobility Management Entity, abbreviation MME) is distributed to UE
Globally unique temporary identifier (the Globally in the domain evolved packet system (Evolved Packet System, abbreviation EPS)
Unique Temporary Identity, abbreviation GUTI).
In traditional network, an operator can provide the domain CS and ps domain service simultaneously for user, namely serve user's
The domain CS operator and ps domain operator are always identical.After the domain CS in a network UE and ps domain registration, network side will be UE
The domain the CS temporary identifier TMSI and ps domain temporary identifier P-TMSI, the two of distribution always point at the same operator.But shared net
It may be not always in this way, because there are the different feelings of the operator in two domains for the reasons such as scarcity of resources or network selection strategy in network
Condition, if PS the and CS registration message of UE is received by different shared operators respectively, UE will will receive a TMSI and refer to
To a shared operator, a P-TMSI is directed toward another shared operator, and access network base stations will be based on these temporary identifiers
Subsequent business request information or control message etc. are routed to different carrier networks, namely generate so-called CS/PS not
Coordination problem.
SRVCC is to refer to for the widely applied technology of LTE voice service interoperability as user equipment (User
Equipment, abbreviation UE) it is carried out in VOIP voice call process using LTE network, it is moved to that LTE signal is weaker and 2G/3G
When network signal covers preferable region, the VoIP voice service for being carried on source network is smoothly switched to the CS of target network
Domain, to guarantee continuous voice call.With the appearance of shared network, comprising: multiple operators only share of access network and core
Net independent multi-operator core network (Multi-operator Core Network, abbreviation MOCN) framework and multiple operators
Gateway core net (Gateway Core Network, abbreviation GWCN) framework of share of access network and core network element.It is above-mentioned
In SRVCC handoff procedure, if UE is switched to the shared network of a 2G/3G from LTE network, need for UE to be switched to from the domain EPS
The domain CS and ps domain are then easy to appear the domain the CS operator for UE selection and PS operator difference, and generation CS/PS is uncoordinated, is easy
Network name is caused to show uncertain, dual Freight Basis and registered public land mobile network (Registered
Public Land Mobile Network, abbreviation RPLMN) it is uncertain the problems such as.
It is generallyd use in the prior art with resource to avoid UE from occurring CS/PS uncoordinated problem during SRVCC
The network side of (pool centric) triggers PS/CS coordinate scheme centered on pond, i.e., if core net node is received from user
Registration message in institute's band TMSI or P-TMSI not by resource pool where itself any MSC or SGSN distributed, then touch
It sends out CS/PS and coordinates process, so that core net node or base station controller (Base Station Controller, abbreviation BSC)/
Radio network controller (Radio Network Controller, abbreviation RNC) is that UE selects a CS/PS according to itself strategy
Domain operator.Detailed process are as follows: UE carries out location area updating (Location after SRVCC switches to target 2G/3G network
Area Update, abbreviation LAU) process when, sent to core network element MSC and carry the LAU request message of TMSI, if carrying
TMSI is not distributed by any MSC in resource pool, then MSC triggering carries out CS/PS coordination process；UE is switched to through SRVCC
After target 2G/3G network, when carrying out Routing Area Update (Route Area Update, abbreviation RAU) process, to core network element
SGSN sends the RAU request message for carrying P-TMSI, if the P-TMSI carried is not distributed by any SGSN in resource pool,
Then SGSN triggering carries out CS/PS coordination process.
The above-mentioned network side centered on resource pool triggers PS/CS coordinate scheme, it is desirable that CS/ is triggered in ps domain and the domain CS simultaneously
PS coordinates process, to guarantee that the same operator is directed toward in the domain CS after coordinating and ps domain.Due to UE during SRVCC ps domain core
Heart net equipment is switched to SGSN from the MME in the domain EPS, and the change of resource pool centainly has occurred, and in the domain EPS, the GUTI of distribution is mapped
For the P-TMSI of ps domain, and the P-TMSI is not belonging to any SGSN in resource pool and is distributed, therefore during RAU, centainly
SGSN can be triggered and carry out CS/PS coordination process, however, MSC resource pool is likely to not change in the domain CS, in LAU during institute
The MSC that the TMSI of carrying is probably belonged in the resource pool of the domain target network CS is distributed, then will not trigger MSC and carry out CS/PS association
Process is adjusted, so that being easy to there is a problem of that CS/PS is uncoordinated after SRVCC switching.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of PS/CS coordination approach and system and mobile interaction center, with gram
For clothes in the prior art in SRVCC handoff procedure, UE is easy there is a problem of that CS and PS are uncoordinated when switching to shared network.
In a first aspect, the embodiment of the present invention provides a kind of PS/CS coordination approach, comprising:
Moving exchanging center MSC determines that the voice communication of user equipment (UE) is single wireless voice calling continuity SRVCC
Caused by switching；
The MSC, at the end of determining voice communication caused by SRVCC switching, Xiang Suoshu UE sends first
Temporary Mobile Subscriber Identity TMSI reassigns message, and it includes TMSI network element in message that the first TMSI, which is reassigned, wherein described
TMSI network element includes a network resource identifier (Network Resource Identifier, abbreviation NRI), and the NRI
It does not share any MSC in network in all MSC resource pools where the MSC to distribute, so that the UE sends position area
The TMSI network element is carried when updating LAU request message, so that receiving the MSC of the LAU request message according to
The NRI triggering PS/CS that TMSI network element includes in LAU request message coordinates process, reselects the domain CS for the UE
Operator.
With reference to first aspect, in the first possible implementation of the first aspect, the first TMSI reassignment disappears
It further include first position area mark (Location Area Identifier, abbreviation LAI) in breath, wherein described first
LAI is non-broadcasting LAI, so that the UE after receiving the first TMSI and reassigning message, saves the first LAI, and
Trigger LAU process.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible
In implementation, further includes:
The MSC is switched in caused voice call process determining by the SRVCC, and Xiang Suoshu UE sends second
TMSI reassigns message, and it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that the UE receives described second
After TMSI reassigns message, the 2nd LAI is saved, and a public Land Mobile Network is obtained according to the 2nd LAI
PLMN mark is used as registered PLMN.
With reference to first aspect any one of with the first to second possible implementation of first aspect, in first party
In the third possible implementation in face, further includes:
The MSC receives the LAU request message that UE is sent, and carries what the UE was received in the LAU request message
The TMSI network element for including in the first TMSI request message；
The MSC determines that the UE for sending the LAU request message is reported according to the NRI for including in the TMSI network element
TMSI do not distributed by MSC any in itself affiliated resource pool；
The MSC triggering PS/CS coordinates process, reselects the domain CS to send the UE of the LAU request message
Operator.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect
In, the MSC triggering PS/CS coordinates process, to send the operation that the UE of the LAU request message reselects a domain CS
Quotient, comprising:
The MSC triggering PS/CS coordinates process, is the UE weight for sending the LAU request message according to itself configuration strategy
The newly operator in one domain CS of selection, and the operator that the LAU request message is issued the selected domain CS is one corresponding
MSC。
The third possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect
In, the MSC triggering PS/CS coordinates process, to send the operation that the UE of the LAU request message reselects a domain CS
Quotient, comprising:
The MSC sends to base station controller BSC or wireless control center RNC and re-routes order, the road again
By including international mobile subscriber identifier (the International Mobile for sending the UE of the LAU request message in order
Subscriber Identifier, abbreviation IMSI) and instruction information is redirected, so that the BSC or the RNC receive institute
After stating rerouting order, the strategy according to the BSC or RNC itself is the UE weight for sending the LAU request message
The newly operator in one domain CS of selection, and the operator that the LAU request message is issued the selected domain CS is one corresponding
MSC。
Second aspect, the embodiment of the present invention provide a kind of MSC, comprising:
First determining module, for determining the ongoing voice communication of user equipment (UE) for single wireless audio call company
Caused by continuous property SRVCC switching；
Sending module, voice communication knot caused by being switched for what is determined in first determining module by the SRVCC
Shu Shi, Xiang Suoshu UE send the first Temporary Mobile Subscriber Identity TMSI and reassign message, and the first TMSI is reassigned in message
Including TMSI network element, wherein the TMSI network element includes a network resource identifier NRI, and the NRI is not itself place
Any MSC in shared network in all MSC resource pools is distributed, so that the UE sends location area updating LAU request message
When carry the TMSI network element so that receiving the MSC of the LAU request message according in the LAU request message
The NRI triggering PS/CS that TMSI network element includes coordinates process, and the operator in a domain CS is reselected for the UE.
In conjunction with second aspect, in the first possible implementation of the second aspect, the first TMSI reassignment disappears
It further include the first LAI in breath, wherein first LAI is non-broadcasting LAI, so that the UE is receiving described first
After TMSI reassigns message, the first LAI is saved, and trigger LAU process.
In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect is possible
In implementation, the sending module is also used to:
Switched in caused voice call process what first determining module determined by the SRVCC, Xiang Suoshu UE
It sends the 2nd TMSI and reassigns message, it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that the UE of the determination
After receiving the 2nd TMSI reassignment message, the 2nd LAI is saved, and public according to the 2nd LAI acquisition one
Land Mobile Network PLMN mark is used as registered PLMN.
In conjunction with any one of second aspect and the first to second possible implementation of second aspect, in second party
In the third possible implementation in face, further includes:
Receiving module carries the UE in the LAU request message and connects for receiving the LAU request message of UE transmission
The TMSI network element for including in the first TMSI request message received；
Second determining module, for determining that sending the LAU request disappears according to the NRI for including in the TMSI network element
The TMSI that the UE of breath is reported is not distributed by MSC any in itself affiliated resource pool；
Trigger module, coordinates process for triggering PS/CS, reselects one to send the UE of the LAU request message
The operator in the domain CS.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect
In, the trigger module is specifically used for:
It triggers PS/CS and coordinates process, be to send the UE of the LAU request message to reselect one according to itself configuration strategy
The operator in a domain CS, and the corresponding MSC of operator that the LAU request message is issued into the selected domain CS.
In conjunction with the third possible implementation of second aspect, in the 5th kind of possible implementation of second aspect
In, the trigger module is specifically used for:
It is sent to base station controller BSC or wireless control center RNC and re-routes order, in the rerouting order
Including sending the international mobile subscriber identifier IMSI of the LAU request message UE and redirecting instruction information, so that the BSC
Perhaps the RNC is received after the rerouting is ordered according to the strategy of the BSC or RNC itself as described in transmission
LAU request message UE reselects the operator in a domain CS, and the LAU request message is issued selected operator pair
The MSC answered.
The third aspect, the embodiment of the present invention provide a kind of MSC, comprising:
The memory connected by bus, processor and transceiver；
The memory stores program code, and the processor executes said program code, for executing following steps:
The voice communication for determining user equipment (UE) is caused by single wireless voice calling continuity SRVCC switching；
The transceiver is called, at the end of determining voice communication caused by SRVCC switching, Xiang Suoshu UE hair
The first Temporary Mobile Subscriber Identity TMSI is sent to reassign message, it includes TMSI network element in message that the first TMSI, which is reassigned,
Described in TMSI network element include a network resource identifier NRI, and the NRI is not to share in network where itself to own
Any MSC in MSC resource pool is distributed, so that the UE carries the TMSI when sending location area updating LAU request message
Network element, so that receiving the MSC of the LAU request message according to the institute that TMSI network element includes in the LAU request message
It states NRI triggering PS/CS and coordinates process, the operator in a domain CS is reselected for the UE.
In conjunction with the third aspect, in the first possible implementation of the third aspect, the processor executes the journey
Sequence code is also used to execute following steps:
Reassigning in message in the first TMSI further includes first position area mark LAI, wherein first LAI
It is triggered for non-broadcasting LAI so that the UE saves the first LAI after receiving the first TMSI and reassigning message
LAU process.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible
In implementation, the processor executes said program code, is also used to execute following steps:
Switched in caused voice call process determining by the SRVCC, calls the transceiver, Xiang Suoshu UE hair
The 2nd TMSI is sent to reassign message, it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that the UE receives institute
After stating the 2nd TMSI reassignment message, the 2nd LAI is saved, and a public land movement is obtained according to the 2nd LAI
Network PLMN mark is used as registered PLMN.
In conjunction with any one of the third aspect and the first to second possible implementation of the third aspect, in third party
In the third possible implementation in face, the processor executes said program code, is also used to execute following steps:
The transceiver is called, the LAU request message that UE is sent is received, carries the UE in the LAU request message
The TMSI network element for including in the first TMSI request message received；
The TMSI for sending the UE of the LAU request message and reporting is determined according to the NRI for including in the TMSI network element
It is not distributed by MSC any in itself affiliated resource pool；
It triggers PS/CS and coordinates process, to send the operator that the UE of the LAU request message reselects a domain CS.
In conjunction with the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect
In, the processor executes said program code, it is specifically used for executing following steps:
It triggers PS/CS and coordinates process, be to send the UE of the LAU request message to reselect one according to itself configuration strategy
The operator in a domain CS, and the corresponding MSC of operator that the LAU request message is issued into the selected domain CS.
In conjunction with the third possible implementation of the third aspect, in the 5th kind of possible implementation of the third aspect
In, the processor executes said program code, it is specifically used for executing following steps:
It is sent to base station controller BSC or wireless control center RNC and re-routes order, in the rerouting order
Including sending the international mobile subscriber identifier IMSI of the UE of the LAU request message and redirecting instruction information, so that described
Perhaps the RNC is received after rerouting order according to the strategy of the BSC or RNC itself BSC is transmission institute
The UE for stating LAU request message reselects the operator in a domain CS, and the LAU request message is issued the selected domain CS
The corresponding MSC of operator.
Fourth aspect, the embodiment of the present invention provide a kind of PS/CS coordination system, comprising: such as the third aspect and third party
The first of face is to the MSC described in any one of the 5th kind of possible implementation, user equipment (UE), base station controller BSC or
Person's wireless control center RNC and Serving GPRS Support Node SGSN.
Through the above scheme, embodiment provided by the invention switches caused voice communication to SRVCC is carried out by MSC
UE send the first TMSI and reassign message, and carry in wherein TMSI cell to appoint in all resource pools in shared network
The NRI what MSC is distributed, so that UE saves the NRI and carries the NRI in subsequent transmission LAU request message, so that connecing
It receives the MSC of LAU request message and determines that TMSI that UE is reported is not any MSC where itself in resource pool according to above-mentioned NRI
It is distributed, and then triggers PS/CS and coordinate process, the operator in a domain CS is reselected for UE, solves and adopts in the prior art
Scheme to (pool centric) centered on resource pool carries out SRVCC and is switched in shared network development process, and MSC is not necessarily touched
It sends out PS/CS and coordinates process, and SGSN is certain to trigger PS/CS and coordinates process, and the problem for being easy to cause PS/CS uncoordinated is real
MSC is bound to trigger PS/CS coordination process during having showed SRVCC, to guarantee that PS/CS coordinates during SRVCC.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the flow chart of PS/CS coordination approach provided by one embodiment of the present invention；
Fig. 2 is the flow chart for the PS/CS coordination approach that another embodiment of the present invention provides；
Fig. 3 is the signaling interaction diagram for the PS/CS coordination approach that further embodiment of the present invention provides；
Fig. 4 is the structural schematic diagram of MSC provided by one embodiment of the present invention；
Fig. 5 is the structural schematic diagram for the MSC that another embodiment of the present invention provides；
Fig. 6 is the structural schematic diagram for the MSC that another embodiment of the invention provides；
Fig. 7 is the structural schematic diagram that PS/CS provided by one embodiment of the present invention coordinates system.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
In SRVCC handoff procedure, speech channel and data service are switched to 2G/3G network by the domain EPS of LTE network respectively
The domain CS and ps domain, namely be switched to global system for mobile communications (Global System for Mobile
Communications, abbreviation GSM) and/enhanced data (Enhanced Data rates for GSM Evolution, referred to as
EDGE) wireless access network (GSM/EDGE Radio Access Network, abbreviation GERAN)/universal land radio access web
The domain CS of (Universal Terrestrial Radio Access Network, abbreviation UTRAN) and ps domain.When carrying out
When the UE of VOIP voice service enters a shared 2G/3G network signal area of coverage from the signal coverage LTE, to guarantee language
Sound business is not disrupted, and the lateral target network side of source network triggers SRVCC switching flow, thus by the voice conversation of UE from LTE
The domain CS that the domain EPS of network is switched to 2G/3G network is continued to execute by target MSC.
Fig. 1 is the flow chart of PS/CS coordination approach provided by one embodiment of the present invention, as shown in Figure 1, this method includes
Following steps:
Step 101, MSC determine that the voice communication of UE is caused by SRVCC switching.
Normally, it shares in network, including one or more operators, each operator provides including one or more MSC
Source pond includes multiple MSC in each resource pool, can be to share any fortune in network for the UE above-mentioned MSC for providing voice service
Seek a MSC in any resource pool of quotient.
Step 102, MSC send the first TMSI to UE at the end of determining voice communication caused by SRVCC switching
Message is reassigned, it includes TMSI network element in message that the first TMSI, which is reassigned, and wherein the TMSI network element includes a NRI, and should
Any MSC that NRI does not share in network in all MSC resource pools where MSC is distributed, so that UE sends LAU request message
When carry above-mentioned NRI so that the MSC for receiving the LAU request message is above-mentioned according to include in the LAU request message
NRI triggers PS/CS and coordinates process, and the operator in a domain CS is reselected for UE.
Specifically, MSC determines that the ongoing voice communication of UE is caused by SRVCC switching, in the voice communication knot
Shu Shi does not release immediately the signaling connection in the domain CS, but sends the first TMSI to UE and reassign message, reassigns in the TMSI
Include TMSI cell in message, and set a special NRI for the NRI for including in the TMSI cell, which can be
One special number sequence or spcial character, are not construed as limiting this present invention, which is not all resources in shared network
Any MSC in pond is distributed, and in other words, which is not identified by MSC any in resource pool.
When specific implementation, MSC can be above-mentioned special to generate using the coding mode different from all MSC distribution NRI
NRI perhaps distributes a messy code for above-mentioned special NRI or empties above-mentioned special NRI, and this is not limited by the present invention.
Above-mentioned UE is saved after receiving the first TMSI that above-mentioned MSC is sent and reassigning message containing above-mentioned special NRI's
Temporary identifier of the TMSI as itself.It is subsequent through BSC or RNC to core net MSC initiate LAU process when, UE is asked in above-mentioned LAU
It asks in the TMSI network element of message and carries above-mentioned NRI.After BSC or RNC receives the above-mentioned LAU request message of UE transmission, obtain
The NRI for including in TMSI network element, inquiry and operator corresponding to above-mentioned NRI in the configuration of itself.Due in above-mentioned TMSI
The NRI for including is a special NRI, is not distributed by any MSC in shared network, BSC or RNC can not be looked for according to configuration relation
It is to matched operator, then random or be the operator that UE selects a domain CS according to certain rule, and to the operation of selection
The LAU request message that the MSC forwarding UE of quotient is sent.
Herein it should be noted that, the MSC of the LAU request message of the UE transmission of BSC or RNC forwarding is received, can be
The above-mentioned MSC of voice service is provided for UE, or any one other MSC in shared network.
Since the NRI for including in TMSI network element in the LAU request message is not distributed by any MSC in shared network, connect
After receiving the NRI that the MSC of LAU request message includes in getting TMSI network element, determine TMSI that UE is reported not according to the NRI
It is distributed by MSC any in own resource pond, then triggers PS/CS and coordinate process, the operator in a domain CS is reselected for UE.
The present embodiment sends the first TMSI reassignment to the UE for carrying out voice communication caused by SRVCC switches by MSC and disappears
Breath, and carry in wherein TMSI cell not to share the NRI that any MSC is distributed in all resource pools in network, so that UE
It saves the NRI and carries the NRI in subsequent transmission LAU request message, so that receiving the MSC root of LAU request message
It determines that the TMSI that UE is reported is not distributed by any MSC in itself place resource pool according to above-mentioned NRI, and then triggers PS/CS association
Process is adjusted, the operator in a domain CS is reselected for UE, solves and uses centered on resource pool (pool in the prior art
Centric scheme) carries out SRVCC and is switched in shared network development process, and MSC not necessarily triggers PS/CS and coordinates process, and SGSN
It is certain to trigger PS/CS and coordinates process, and the problem for being easy to cause PS/CS uncoordinated, MSC is certain during realizing SRVCC
PS/CS can be triggered and coordinate process, to guarantee that PS/CS coordinates during SRVCC.
In a preferred embodiment of the invention, it further includes the first LAI that above-mentioned first TMSI, which is reassigned in message,
First LAI is non-broadcasting (non-broadcast) LAI, so that above-mentioned UE is protected after receiving the first TMSI and reassigning message
The first LAI is deposited, LAU trigger condition is manufactured, to initiate LAU process.
Normally, after the broadcast LAI message that the base station of UE wireless access network where receiving itself is sent, by the broadcast
The broadcast LAI for including in the LAI message and LAI issued during LAU process or attachment etc. by core net MSC itself saved
It compares, LAU request is initiated if different, LAU request needs to wait until because of the area the location of UE (Location Area, letter
Claim LA) it changes and causes to initiate when broadcast LAI is different with the LAI that itself is deposited, there are certain delays.
The preferred embodiment includes the first LAI by reassigning in message in the first TMSI, so that UE receives first
While TMSI reassigns message, receives a non-broadcasting LAI and store, the non-broadcasting LAI for comparing the storage disappears with broadcast
LAI in breath then sends LAU request message to MSC immediately, so that UE is in CS voice conversation knot since the two must not be identical
LAU request can be quickly initiated after beam, and then improves the efficiency that PS/CS coordinates.
In another preferred embodiment provided by the invention, MSC, the voice caused by the determining switching by SRVCC leads to
During words, the 2nd TMSI is sent to UE and reassigns message, it includes the 2nd LAI that the 2nd TMSI, which reassigns message, this
Two LAI can be broadcast or non-broadcasting LAI, so that UE is received after the 2nd TMSI reassigns message, save the
Two LAI, and public Land Mobile Network (Public Land Mobile Network, an abbreviation are obtained according to the 2nd LAI
PLMN) mark is used as registered (registered) PLMN, i.e. RPLMN.
It should be noted that the 2nd TMSI in the present embodiment reassigns message, can also from MSC during SRVCC to
UE send, realization process be it is similar, specifically repeat no more.
Normally, UE may be registered before SRVCC switching not on any MSC, or not in target network
It was registered on MSC, then in handoff procedure or during CS domain call, UE has no RPLMN, causes as aobvious without network name such as UE
The abnormal conditions such as show, and subsequent network gravity treatment and cell re-selection procedure may also will receive influence.
The preferred embodiment, by the way that in SRVCC handoff procedure, MSC sends the 2nd TMSI reassignment message to UE and makes
UE can obtain RPLMN according to the 2nd LAI wherein carried, to solve UE nothing that may be present during SRVCC
The problems such as display without network name of RPLMN initiation.
Fig. 2 is the flow chart for the PS/CS coordination approach that another embodiment of the present invention provides, which is shown in Fig. 1
One extension of embodiment of the method, the embodiment are the LAU request that MSC receives that UE reassigns message transmission according to the first TMSI
The specific implementation process of message, as shown in Fig. 2, this method embodiment includes:
Step 201, MSC receive the LAU request message that UE is sent, carry that UE receives in the LAU request message the
The TMSI network element for including in one TMSI request message；
Wherein, the TMSI network element is identical as TMSI network element described in the embodiment of the present invention one, the sent for MSC to UE
One TMSI reassigns the TMSI network element that message carries, and includes a NRI in the TMSI network element, which is not shared net
Any MSC in network in all resource pools is distributed, and is specifically repeated no more.
Step 202, MSC determine that the UE for sending LAU request message is reported according to the NRI for including in above-mentioned TMSI network element
TMSI is not distributed by MSC any in itself affiliated resource pool；
Step 203, MSC triggering PS/CS coordinate process, reselect the domain CS to send the UE of LAU request message
Operator.
Wherein, in step 203, MSC is to send the UE of above-mentioned LAU request message to reselect the operator in a domain CS,
May include the possible implementation of the following two kinds:
The first, MSC according to itself configuration strategy be send above-mentioned LAU request message UE reselect one it is available
CS operator, and the corresponding MSC of operator that LAU request message is transmitted to the selected domain CS.
Second, it includes that transmission is above-mentioned in the rerouting order that MSC is sent to BSC or RNC, which re-routes order,
The IMSI and redirection instruction information of the UE of LAU request message, so that after BSC or RNC receive rerouting order, according to
The strategy of BSC or RNC itself is that the UE of transmission LAU request message reselects the operator in a domain CS, and the LAU is asked
Message is asked to be transmitted to the corresponding MSC of operator in the selected domain CS.
Wherein, for the shared network of GWCN framework, the first possible implementation can be used, MSC is matched by itself
The strategy set is the operator that UE selects a domain CS, and due to ps domain, SGSN is certain to trigger PS/CS coordination process, SGSN
It can be the operator that UE selects a ps domain according to the strategy of itself configuration, a P-TMSI be redistributed for UE, as long as guaranteeing
MSC and SGSN then can guarantee MSC and SGSN is respectively the domain the CS operation that UE is reselected to the policy consistency of the same UE
Quotient and ps domain operator can be directed toward the same operator, so that UE is registered in the ps domain of the same operator and the domain CS, to protect
The PS/CS that card performs the UE of SRVCC switching coordinates；
For the shared network of MOCN framework, above-mentioned second possible implementation can be used, MSC is to BSC or RNC
Return comprising UE IMSI and redirect instruction information rerouting order, by redirect instruction information inform BSC or
The purpose of the RNC order is coordinated for PS/CS, it is desirable that BSC or RNC is that user selects the domain a CS operator, BSC again
It is the fortune that UE reselects a domain CS according to itself tactful (such as IMSI Hash method) or after RNC receives rerouting order
Battalion's quotient's network is registered, and for ps domain, SGSN is after receiving RAU request message, due to that can not identify the P-TMSI in RAU,
Also can to BSC perhaps RNC send comprising UE IMSI and redirect instruction information heavy-route order so that BSC RNC root
It is registered according to itself strategy for the UE carrier network for reselecting a ps domain, as long as guaranteeing BSC or RNC to same
The policy consistency of UE can then guarantee that BSC or RNC is that the CS operator that UE is reselected and ps domain operator direction are same
A operator, so that UE is registered in the ps domain of the same operator and the domain CS, so that guarantee performs the UE's of SRVCC switching
PS/CS coordinates.
Above-mentioned MSC, BSC or RNC are the specific implementation process for the operator that UE reselects a domain CS, compared with skill
Art, details are not described herein.
The present embodiment, MSC receive the LAU request message that UE is sent, and wherein UE carries the UE in the LAU request message
The first TMSI received reassigns the TMSI network element for including in message, wherein includes not for shared network in the TMSI network element
In any MSC is distributed in all resource pools NRI, MSC determines what UE was reported according to the NRI carried in LAU request message
Any MSC of the TMSI not where itself in resource pool is distributed, and then is triggered PS/CS and coordinated process, reselects one for UE
The operator in a domain CS, and the corresponding MSC of operator that LAU request message is transmitted to the selected domain CS, to solve
The MSC existing for being easy in the prior art that determined not necessarily triggers PS/CS and coordinates process, and SGSN is certain to trigger PS/CS coordination
Process, and the problem for being easy to cause PS/CS uncoordinated.
Below by taking MOCN framework shares network as an example, illustrate between each network node involved in the embodiment of the present invention
Signalling interactive process, network is shared for GWCN framework, is achieved in that similar, specifically repeats no more.
Fig. 3 is the signaling interaction diagram for the PS/CS coordination approach that further embodiment of the present invention provides, and the embodiment is with 2G/
The shared network of 3G network side includes operator A and operator B, and there is 1 MSC resource pool (pool) in each operator respectively, point
It Wei not include two MSC in MSC pool A and MSC pool B, MSC pool A, be denoted as MSC respectivelyA1, MSCA2And MSC
Include two MSC in pool B, is denoted as MSC respectivelyB1, MSCB2And each operator at least 1 SGSN, it is denoted as respectively
SGSNAAnd SGSNBFor illustrate the specific implementation process of the embodiment, for the operator of other quantity, resource pool and every
The scene for the MSC for including in a resource pool, realization process be it is similar, repeat no more, which further includes UE and source net
The Signalling exchange between BSC/RNC in network side MME, and access network, as shown in figure 3, the embodiment includes the following steps:
Step 301, source network side MME in MSCA1, MSCA2And MSCB1, MSCB2It is middle to select a MSC as target
MSC initiates SRVCC switching to target MSC.
Specifically, MME can according between MME and MSC for the logic interfacing Sv situation of SRVCC and itself selection plan
Slightly, PS to CS (ps to cs) switching request is initiated to one MSC server of target network side, it is UE's which, which requires MSC,
Corresponding preparation operation and session handover operation are done in arrival.In the embodiment, MSC is selected with MMEA1As for target MSC into
Row explanation selects other MSC in shared network for MME, realization process be it is similar, specifically repeat no more.
Step 302, MSCA1, during SRVCC or in voice call process caused by subsequent SRVCC switches, sent out to UE
It send the 2nd TMSI to reassign message, and carries the MSC within the messageA1It is one TMSI and one second of UE distribution
LAI。
Step 303, UE receive the 2nd TMSI and reassign message, save the TMSI as itself temporary identifier, and root
RPLMN is obtained according to the 2nd LAI.
At the end of step 304, the voice communication caused by SRVCC switches, MSCA1The CS domain signaling for not releasing immediately UE connects
It connects, sends the first TMSI to UE and reassign message, carry TMSI cell and the first LAI in the message, the first LAI is
The LAI of non-broadcasting, wherein including a NRI in TMSI cell, which can be a special Serial No. or spy
Different character, and the NRI is not distributed by any one of all resource pools in shared network MSC namely the TMSI network element
In include NRI cannot be identified by any one of all resource pools MSC, specifically, the NRI is as in the first embodiment, herein
It repeats no more.
After step 305, UE receive the first TMSI reassignment message, the first LAI is saved, and by the first LAI and extensively
It broadcasts the LAI received in message to compare, since the LAI received in the first LAI and broadcast message is certainly different, UE is determined
The condition for meeting triggering LAU process sends LAU request message to the BSC/RNC of access net, and takes in the LAU request message
The TMSI cell for including in message is reassigned with above-mentioned first TMSI, wherein includes above-mentioned NRI in the TMSI cell.
Step 306, BSC/RNC receive the above-mentioned LAU request message of UE transmission, obtain from the LAU request message
TMSI cell identifies the NRI in TMSI cell, according to itself NRI of storage and the mapping table of carrier relationship, inquiry
The corresponding operator of this NRI, since the NRI is not distributed by any MSC in all resource pools, BSC/RNC is searched less than right
The operator answered, therefore operator random or according to one domain CS of certain rule selection, and the LAU request message is forwarded
Give selected operator a corresponding MSC.
Using selected operator as operator A, and LAU request is forwarded to MSCA1For carry out subsequent step and say
It is bright, it is MSC for the MSC selectedA2Or a MSC in operator B, specific implementation process be it is similar, repeat no more.
Step 307, MSCA1The LAU request message for receiving BSC/RNC forwarding, determines what the UE was reported according to above-mentioned NRI
Not where itself, any MSC is distributed TMSI in resource pool, then triggers PS/CS and coordinate process, sends heavy-route to BSC/RNC
Order, IMSI and redirection instruction information in the heavy-route order including UE.
After step 308, BSC/RNC receive heavy-route order, reselected according to the IMSI of UE and itself strategy for UE
The operator in one domain CS.
The operator that the LAU request message of UE is forwarded to the selected domain CS by step 309, BSC/RNC is one corresponding
MSC, by taking selected operator is operator B as an example, then the LAU request message can be transmitted to MSCB1Or MSCB2, this reality
Example is applied to be transmitted to MSCB1For, for other MSC its mistake being transmitted in the MSC resource pool that selected operator B includes
Journey be it is similar, specifically repeat no more.
Step 310, UE trigger Routing Area Update (Route Area Update, abbreviation RAU) process, send to BSC/RNC
One RAU request message, and the P-TMSI from the GUTI mapping distributed by MME is carried in the RAU request message.
After step 311, BSC/RNC receive the RAU request message of UE transmission, since the P-TMSI is not 2G/3G network
Any SGSN of side is distributed, then a SGSN is randomly choosed, and the RAU request message is forwarded to the SGSN, with selected
SGSN be SGSNAFor, it is SGSN for selected SGSNB, realization process be it is similar, details are not described herein again.
Step 312, SGSNAAfter receiving RAU request message, since the P-TMSI is not any of 2G/3G network side
SGSN is distributed, then triggers PS/CS and coordinate process, sends heavy-route order to BSC/RNC, includes UE in the heavy-route order
IMSI and redirect instruction information.
It is that UE reselects a ps domain according to itself strategy after step 313, BSC/RNC receive heavy-route order
Operator uses same policy for its selection domain CS or the operator of ps domain same UE, BSC/RNC, therefore can guarantee
It is the ps domain same, then that BSC/RNC reselects for UE for the operator of the selected ps domain of the UE and the operator in the domain CS
Operator be also operator B.
RAU request message is transmitted to the SGSN reselected for UE by step 314, BSC/RNCB。
It should be noted that the corresponding LAU process of above-mentioned steps 305-309 RAU process corresponding with above-mentioned steps 310-314
Execution sequence can be step 305-309 and step 310-314 and be performed simultaneously, be also possible to step 305-309 in step
It is executed after 310-314, this present invention is not construed as limiting.
Fig. 4 is the structural schematic diagram of MSC provided by one embodiment of the present invention, as shown in figure 4, the MSC 400, including the
One determining module 401, sending module 402, wherein
First determining module 401, for determining that the voice communication of UE is caused by SRVCC switching；
Sending module 402, voice communication caused by being switched for what is determined in the first determining module 401 by SRVCC terminate
When, the first TMSI is sent to UE and reassigns message, and it includes TMSI network element in message that the first TMSI, which is reassigned, wherein the TMSI net
Member includes a NRI, and any MSC that the NRI is not shared where itself in network in all MSC resource pools is distributed,
So that UE carries above-mentioned TMSI network element when sending LAU request message so that receive the MSC of the LAU request message according to
The NRI triggering PS/CS that TMSI network element includes in the LAU request message coordinates process, and the operation in a domain CS is reselected for UE
Quotient.
In a preferred embodiment of the invention, it further includes the first LAI that above-mentioned first TMSI, which is reassigned in message,
First LAI is non-broadcasting LAI, so that above-mentioned UE saves the first LAI after receiving the first TMSI and reassigning message, is made
LAU trigger condition is made, to initiate LAU process.
In another preferred embodiment provided by the invention, sending module 402 is also used to, in the first determining module 401
Determining is switched in caused voice call process by SRVCC, is sent the 2nd TMSI to UE and is reassigned message, the 2nd TMSI weight
Assignment messages include the 2nd LAI.LAI that 2nd LAI can broadcast for one or non-broadcasting, so that UE is received
After 2nd TMSI reassigns message, the 2nd LAI is saved, and a PLMN mark is obtained as registered according to the 2nd LAI
PLMN。
MSC provided in an embodiment of the present invention can be used for executing the technical solution in embodiment of the method shown in FIG. 1,
Implementing principle and technical effect be it is similar, specifically repeat no more.
Fig. 5 is the structural schematic diagram for the MSC that another embodiment of the present invention provides, the MSC 500 in the embodiment, for figure
An extension of MSC shown in 4 reassigns the LAU request message that message is sent to handle the UE received according to the first TMSI, such as
Shown in Fig. 5, the MSC 500, further includes:
Receiving module 501, the second determining module 502 and trigger module 503, wherein
Receiving module 501 carries UE in the LAU request message and receives for receiving the LAU request message of UE transmission
Above-mentioned first TMSI request message in include TMSI network element；
Second determining module 502 sends LAU request message for determining according to the NRI for including in above-mentioned TMSI network element
The TMSI that UE is reported is not distributed by MSC any in itself affiliated resource pool；
Trigger module 503, coordinates process for triggering PS/CS, reselects a CS to send the UE of LAU request message
The operator in domain.
Further, trigger module 503 is specifically used for:
It triggers PS/CS and coordinates process, a CS is reselected according to the UE that itself configuration strategy is transmission LAU request message
The operator in domain, and the corresponding MSC of operator that LAU request message is issued into the selected domain CS.
Optionally, trigger module 503 is specifically used for:
It is sent to BSC or RNC and re-routes order, re-routing includes sending LAU request message UE's in order
IMSI and instruction information is redirected, so that perhaps RNC is received after the rerouting order according to BSC's or RNC itself BSC
Strategy reselects the operator in a domain CS to send LAU request message UE, and LAU request message is issued selected fortune
Seek the corresponding MSC of quotient.
MSC provided in this embodiment can be used for executing Fig. 1, technical solution and Fig. 3 in embodiment of the method shown in Fig. 2
The technical solution of MSC corresponding part in illustrated embodiment, realization principle is similar with having the technical effect that, specifically repeats no more.
Fig. 6 is the structural schematic diagram for the MSC that another embodiment of the invention provides, as shown in fig. 6, the MSC 600, packet
It includes: the memory 601 connected by bus (as shown in heavy line in figure), processor 602 and transceiver 603, wherein
Memory 601 stores program code, and processor 602 executes the program code, for executing following steps:
The voice communication for determining UE is caused by SRVCC switching；
Transceiver 603 is called, at the end of determining voice communication caused by SRVCC switching, sends first to UE
TMSI reassigns message, and it includes TMSI network element in message that the first TMSI, which is reassigned, and wherein TMSI network element includes a NRI, and
Any MSC that NRI does not share in network in all MSC resource pools where itself is distributed, so that UE sends LAU request message
When carry TMSI network element so that the MSC for receiving LAU request message includes according to TMSI network element in LAU request message
NRI triggers PS/CS and coordinates process, and the operator in a domain CS is reselected for UE.
Preferably, processor 602 executes program code, is also used to execute following steps:
Reassigning in message in the first TMSI further includes the first LAI, wherein the first LAI is non-broadcasting LAI, so that UE
After receiving the first TMSI and reassigning message, the first LAI is saved, triggers LAU process.
Preferably, processor 602 executes program code, is also used to execute following steps:
Switched in caused voice call process determining by SRVCC, call transceiver 603, sends second to UE
TMSI reassigns message, and it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that UE receives the 2nd TMSI reassignment and disappears
After breath, the 2nd LAI is saved, and a PLMN mark is obtained according to the 2nd LAI and is used as registered PLMN.
Further, UE receives the first TMSI and reassigns message, when sending LAU request message to core net MSC, this reality
The processor 602 applied in example executes program code, is also used to execute following steps:
Transceiver 603 is called, the LAU request message that UE is sent is received, carry that UE receives in LAU request message the
The TMSI network element for including in one TMSI request message；
Determine that the TMSI that the UE for sending LAU request message is reported is not belonging to itself according to the NRI for including in TMSI network element
Any MSC is distributed in resource pool；
It triggers PS/CS and coordinates process, to send the operator that the UE of LAU request message reselects a domain CS.
Further, processor 602 executes program code, is specifically used for executing following steps:
It triggers PS/CS and coordinates process, a CS is reselected according to the UE that itself configuration strategy is transmission LAU request message
The operator in domain, and the corresponding MSC of operator that LAU request message is issued into the selected domain CS.
Optionally, processor 602 executes program code, is specifically used for executing following steps:
It is sent to BSC or RNC and re-routes order, re-routing includes the UE for sending LAU request message in order
IMSI and redirection instruction information, so that perhaps RNC receives the plan after rerouting is ordered according to BSC or RNC itself to BSC
The UE for slightly sending LAU request message reselects the operator in a domain CS, and LAU request message is issued selected CS
The corresponding MSC of the operator in domain.
MSC in the present embodiment, can be used for execution can be used for executing Fig. 1, technical side in embodiment of the method shown in Fig. 2
The technical solution of MSC corresponding part in case and embodiment illustrated in fig. 3, realization principle is similar with having the technical effect that, specifically
It repeats no more.
Fig. 7 is the structural schematic diagram that PS/CS provided by one embodiment of the present invention coordinates system, as shown in fig. 7, the PS/
CS coordinates system 700, comprising: MSC 701, UE 702, BSC 703 or RNC704 and SGSN 705, wherein 701 MSC
It can be the MSC 500 or MSC 600 provided in Fig. 5 or embodiment illustrated in fig. 6, realization principle is similar with having the technical effect that
, specifically repeat no more.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can be with
It is realized with hardware realization or firmware realization or their combination mode.It when implemented in software, can be by above-mentioned function
Storage in computer-readable medium or as on computer-readable medium one or more instructions or code transmitted.Meter
Calculation machine readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to another
Any medium of a place transmission computer program.Storage medium can be any usable medium that computer can access.With
For this but be not limited to: computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk
Storage medium or other magnetic storage apparatus or can be used in carry or store have instruction or data structure form expectation
Program code and can be by any other medium of computer access.Furthermore.Any connection appropriate can become computer
Readable medium.For example, if software is using coaxial cable, optical fiber cable, twisted pair, Digital Subscriber Line (DSL) or such as
The wireless technology of infrared ray, radio and microwave etc is transmitted from website, server or other remote sources, then coaxial electrical
The wireless technology of cable, optical fiber cable, twisted pair, DSL or such as infrared ray, wireless and microwave etc includes in affiliated medium
In fixing.As used in the present invention, disk (Disk) and dish (disc) are logical including compression optical disc (CD), laser disc, optical disc, number
With optical disc (DVD), floppy disk and Blu-ray Disc, the usually magnetic replicate data of which disk, and dish is then with laser come optical duplication
Data.Combination above should also be as including within the protection scope of computer-readable medium.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (19)
1. a kind of packet switch PS/ circuit switching (CS) coordination approach characterized by comprising
Moving exchanging center MSC determines the voice communication of user equipment (UE) for single wireless voice calling continuity SRVCC switching
It is caused；
The MSC, at the end of determining voice communication caused by SRVCC switching, it is interim that Xiang Suoshu UE sends first
Mobile user identification TMSI reassigns message, and it includes TMSI network element that the first TMSI, which is reassigned in message, wherein the TMSI
Network element includes a network resource identifier NRI, and the NRI is not that all MSC resource pools in network are shared at the place MSC
In any MSC distributed so that the UE send location area updating LAU request message when carry the TMSI network element, in turn
So that the MSC for receiving the LAU request message is triggered according to the NRI that TMSI network element includes in the LAU request message
PS/CS coordinates process, and the operator in a domain CS is reselected for the UE.
2. the method according to claim 1, wherein it further includes one that the first TMSI, which is reassigned in message,
One Location Area Identification LAI, wherein first LAI is non-broadcasting LAI, so that the UE divides receiving the first TMSI again
After message, the first LAI is saved, and trigger LAU process.
3. the method according to claim 1, wherein further include:
The MSC is switched in caused voice call process determining by the SRVCC, and Xiang Suoshu UE sends the 2nd TMSI
Message is reassigned, it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that the UE receives the 2nd TMSI
After reassigning message, the 2nd LAI is saved, and a public Land Mobile Network PLMN is obtained according to the 2nd LAI and is marked
Know and is used as registered PLMN.
4. method according to any one of claims 1 to 3, which is characterized in that further include:
The MSC receives the LAU request message that UE is sent, and carries the UE is received first in the LAU request message
The TMSI network element for including in TMSI request message；
The MSC determines that the UE for sending the LAU request message is reported according to the NRI for including in the TMSI network element
TMSI is not distributed by MSC any in itself affiliated resource pool；
The MSC triggering PS/CS coordinates process, to send the operation that the UE of the LAU request message reselects a domain CS
Quotient.
5. according to the method described in claim 4, it is characterized in that, MSC triggering PS/CS coordinates process, described in sending
The UE of LAU request message reselects the operator in a domain CS, comprising:
MSC triggering PS/CS coordinates process, is to send the UE of the LAU request message to select again according to itself configuration strategy
The operator in a domain CS is selected, and the corresponding MSC of the operator that the LAU request message is issued into the selected domain CS.
6. according to the method described in claim 4, it is characterized in that, MSC triggering PS/CS coordinates process, described in sending
The UE of LAU request message reselects the operator in a domain CS, comprising:
The MSC sends to base station controller BSC or wireless control center RNC and re-routes order, the rerouting life
It include the international mobile subscriber identifier IMSI and redirection instruction information for sending the UE of the LAU request message in order, so that
Perhaps the RNC is received after rerouting order according to the strategy of the BSC or RNC itself BSC is hair
The operator for sending the UE of the LAU request message to reselect a domain CS, and the LAU request message issued selected
The corresponding MSC of the operator in the domain CS.
7. a kind of moving exchanging center MSC characterized by comprising
First determining module, for determining that the ongoing voice communication of user equipment (UE) is single wireless voice calling continuity
Caused by SRVCC switches；
Sending module, for first determining module determine by the SRVCC switch caused by voice communication at the end of,
The first Temporary Mobile Subscriber Identity TMSI is sent to the UE and reassigns message, and the first TMSI, which is reassigned in message, includes
TMSI network element, wherein the TMSI network element includes a network resource identifier NRI, and the NRI is not that itself place is shared
Any MSC in network in all MSC resource pools is distributed, so that the UE takes when sending location area updating LAU request message
With the TMSI network element, so that receiving the MSC of the LAU request message according to TMSI net in the LAU request message
The NRI triggering PS/CS that member includes coordinates process, and the operator in a domain CS is reselected for the UE.
8. MSC according to claim 7, which is characterized in that it further includes one that the first TMSI, which is reassigned in message,
One LAI, wherein first LAI is non-broadcasting LAI, so that the UE is after receiving the first TMSI and reassigning message,
The first LAI is saved, and triggers LAU process.
9. MSC according to claim 7, which is characterized in that the sending module is also used to:
Switched in caused voice call process what first determining module determined by the SRVCC, Xiang Suoshu UE is sent
2nd TMSI reassigns message, and it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that the UE of the determination is received
After reassigning message to the 2nd TMSI, the 2nd LAI is saved, and public land according to the 2nd LAI acquisition one
Mobile network PLMN mark is used as registered PLMN.
10. according to the described in any item MSC of claim 7-9, which is characterized in that further include:
Receiving module carries the UE in the LAU request message and receives for receiving the LAU request message of UE transmission
The first TMSI request message in include the TMSI network element；
Second determining module sends the LAU request message for determining according to the NRI for including in the TMSI network element
The TMSI that UE is reported is not distributed by MSC any in itself affiliated resource pool；
Trigger module, coordinates process for triggering PS/CS, reselects the domain CS to send the UE of the LAU request message
Operator.
11. MSC according to claim 10, which is characterized in that the trigger module is specifically used for:
It triggers PS/CS and coordinates process, be to send the UE of the LAU request message to reselect a CS according to itself configuration strategy
The operator in domain, and the corresponding MSC of operator that the LAU request message is issued into the selected domain CS.
12. MSC according to claim 10, which is characterized in that the trigger module is specifically used for:
It is sent to base station controller BSC or wireless control center RNC and re-routes order, include in the rerouting order
Send the LAU request message UE international mobile subscriber identifier IMSI and redirect instruction information so that the BSC or
It is to send the LAU to ask according to the strategy of the BSC or RNC itself after the RNC receives the rerouting order
Message UE is asked to reselect the operator in a domain CS, and it is corresponding that the LAU request message issued selected operator
One MSC.
13. a kind of mobile interaction center MSC characterized by comprising
The memory connected by bus, processor and transceiver；
The memory stores program code, and the processor executes said program code, for executing following steps:
The voice communication for determining user equipment (UE) is caused by single wireless voice calling continuity SRVCC switching；
Call the transceiver, it is determining switched by the SRVCC caused by voice communication at the end of, Xiang Suoshu UE sends the
One Temporary Mobile Subscriber Identity TMSI reassigns message, and it includes TMSI network element in message that the first TMSI, which is reassigned, wherein institute
Stating TMSI network element includes a network resource identifier NRI, and the NRI is not that all MSC are provided in shared network where itself
Any MSC in the pond of source is distributed, so that the UE carries the TMSI network element when sending location area updating LAU request message,
So that receiving the MSC of the LAU request message according to the NRI that TMSI network element includes in the LAU request message
It triggers PS/CS and coordinates process, the operator in a domain CS is reselected for the UE.
14. MSC according to claim 13, which is characterized in that the processor executes said program code, is also used to hold
Row following steps:
Reassigning in message in the first TMSI further includes first position area mark LAI, wherein first LAI is non-
LAI is broadcasted, so that the UE after receiving the first TMSI and reassigning message, saves the first LAI, triggering LAU stream
Journey.
15. MSC according to claim 13, which is characterized in that the processor executes said program code, is also used to hold
Row following steps:
It is determining switched by the SRVCC caused by voice call process, call the transceiver, Xiang Suoshu UE sends the
Two TMSI reassign message, and it includes the 2nd LAI that the 2nd TMSI, which reassigns message, so that the UE receives described the
After two TMSI reassign message, the 2nd LAI is saved, and a public Land Mobile Network is obtained according to the 2nd LAI
PLMN mark is used as registered PLMN.
16. 3 to 15 described in any item MSC according to claim 1, which is characterized in that the processor executes described program generation
Code, is also used to execute following steps:
The transceiver is called, the LAU request message that UE is sent is received, the UE is carried in the LAU request message and is received
To the first TMSI request message in include the TMSI network element；
It is not according to the TMSI that the NRI for including in the TMSI network element determines that the UE of the transmission LAU request message is reported
Any MSC is distributed in itself affiliated resource pool；
It triggers PS/CS and coordinates process, to send the operator that the UE of the LAU request message reselects a domain CS.
17. MSC according to claim 16, which is characterized in that the processor executes said program code, is specifically used for
Execute following steps:
It triggers PS/CS and coordinates process, be to send the UE of the LAU request message to reselect a CS according to itself configuration strategy
The operator in domain, and the corresponding MSC of operator that the LAU request message is issued into the selected domain CS.
18. MSC according to claim 16, which is characterized in that the processor executes said program code, is specifically used for
Execute following steps:
It is sent to base station controller BSC or wireless control center RNC and re-routes order, include in the rerouting order
Send the UE of the LAU request message international mobile subscriber identifier IMSI and redirect instruction information so that the BSC or
It is to send the LAU according to the strategy of the BSC or RNC itself after RNC described in person receives the rerouting order
The UE of request message reselects the operator in a domain CS, and the LAU request message is issued to the fortune in the selected domain CS
Seek the corresponding MSC of quotient.
19. a kind of packet switch PS/ circuit switching (CS) coordinates system characterized by comprising as claim 13 to 18 is any
Mobile interaction center MSC described in, user equipment (UE), base station controller BSC or wireless control center RNC and GPRS
Business support node SGSN.
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| PCT/CN2014/086436 WO2016037365A1 (en) | 2014-09-12 | 2014-09-12 | Ps/cs coordination method and system, and mobile interaction centre |
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| CN111835779B (en) * | 2020-07-20 | 2023-04-18 | 安徽华速达电子科技有限公司 | Authentication method for equipment access platform |
| US11991525B2 (en) | 2021-12-02 | 2024-05-21 | T-Mobile Usa, Inc. | Wireless device access and subsidy control |
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