CN104507129B - A kind of SRVCC trigger flows method, mobile management entity and base station - Google Patents
A kind of SRVCC trigger flows method, mobile management entity and base station Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of SRVCC trigger flows method, mobile management entity and base station, is related to the communications field, solves the problems, such as not being managed collectively voice resource during existing CSFB.Concrete scheme is：MME receives the CSFB access requests that UE is sent；MME obtains the session Handover Number STN SR of the SRVCC in UE user signing contract information；MME sends handover request message after CSFB access requests are received, to base station；Handoff request message includes the ability parameter of the UE and the STN SR of the UE；MME sends the instruction of SRVCC business after the switching response message of base station feedback is received, according to the instruction of switching response message to moving exchanging center MSC, so that the MSC indicates execution SRVCC flows according to the SRVCC business.The present invention is applied to SRVCC flows.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of SRVCC trigger flows method, mobile management entity and base station.
Background technology
In Long Term Evolution (English：Long Term Evolution, abbreviation LTE) in network, user equipment (English：User
Equipment, abbreviation UE) carry out audio call when, generally audio call can be realized by two ways.Wherein, it is a kind of
It is by circuit domain dropping (English：Circuit Switched Fallback, abbreviation CSFB) technology realizes, i.e., by UE from
Fourth generation mobile communication technology (English：The 4Generation Mobile Communication Technology, referred to as
4G) network falls back to Generation Mobile Telecommunication System technology (English：Second Generation, abbreviation 2G)/3G (Third Generation) Moblie
Technology (English：3rd Generation, abbreviation 3G) in network, utilize 2G/3G real-time performance speech businesses；Another kind is to utilize
Internet protocol (English：Internet Protocol, abbreviation IP) IP multimedia subsystem, IMS (English：IP Multimedia
Subsystem, abbreviation IMS) directly progress voice LTE is (English in the lte networks for system：Voice over LTE, referred to as
VoLTE) business, it is a kind of IP data transmission technologies, and it is all carried in LTE network without 2G/3G networks, whole business,
Data and unification of the speech business under consolidated network can be achieved, i.e., the data service of high-speed is not only provided under LTE network,
Carry voice traffic is gone back simultaneously, without relying on 2G/3G networks.But UE is specifically to carry out when realizing audio call
CSFB business or VoLTE business are determined by network and UE itself configuration, therefore, in actual applications, both
Mode is simultaneous.
Meanwhile when UE carries out above-mentioned VoLTE business in the lte networks, when walking out LTE network and entering 2G/3G networks, lead to
Frequently with injection frequency continuous voice call (English：Single Radio Voice Call Continuity, abbreviation SRVCC)
Technology realizes the continuity of audio call.In this approach, the resource needed for UE progress speech business is by IMS systematic unities
It is allocated.And during CSFB, the resource that UE carries out needed for speech business is then by mobile switching centre (Mobile
Switching Center) be allocated on demand according to each UE demand.
In addition, as data communication and the development of multimedia service demand, and the ultra high data that 4G networks are possessed pass
Defeated speed, in future, it will have a large number of users using 4G networks to carry out business transmission.In such a scenario, if having largely makes
During with the UE of CSFB business to MSC request distribution resources, because MSC using the UE of CSFB business when to distribute resource, generally
Be individually to be allocated according to UE demand, IMS speech businesses can't be thought of as and retain enough resources, i.e., can't be to every
The voice resource of individual UE distribution is managed as a whole, so as to cause MSC after resource is distributed for a large amount of UE, it is possible to cause CS to provide
Source is less, and can not be the follow-up UE for falling back to the progress IMS speech businesses of 2G/3G networks from LTE network by SRVCC processes
Enough resources are provided, so as to cause IMS speech businesses unstable or even interrupt.
The content of the invention
The embodiment of the present invention provides a kind of SRVCC trigger flows method, mobile management entity and base station, solves existing
The problem of voice resource can not being managed collectively during CSFB.
To reach above-mentioned purpose, the embodiment of the present invention adopts the following technical scheme that：
First aspect, there is provided a kind of SRVCC trigger flows method, including：
Mobile management entity MME receives the circuit domain dropping CSFB access requests that user equipment (UE) is sent；The CSFB connects
Entering request includes the ability parameter of the UE；The ability parameter of the UE is used to represent that the UE possesses injection frequency audio call company
Continuous property SRVCC abilities；
The MME obtains the session Handover Number STN-SR of the SRVCC in the user signing contract information of the UE；The STN-
SR represents that the MME supports SRVCC and the MME opens the SRVCC to the UE；
The MME sends handover request message after the CSFB access requests are received, to base station；The handover request
Message includes the ability parameter of the UE and the STN-SR of the UE；
The MME is after the switching response message of the base station feedback is received, according to the finger of the switching response message
Show to moving exchanging center MSC and send the instruction of SRVCC business, so that the MSC indicates to perform according to the SRVCC business
SRVCC flows；
Wherein, the SRVCC flows include：The MSC is indicated to IP multimedia subsystem according to the SRVCC business
IMS sends resource allocation request so that the IMS indicates that the MSC distributes for the UE according to the resource allocation request
Establish the resource needed for CS carryings.
In the first possible implementation of first aspect, the MME is specific to base station transmission handover request message
Including：
The MME sends the handover request message for including circuit domain dropping CSFB signs to the base station；Wherein institute
CSFB signs are stated to be used to represent that the UE needs to perform CSFB flows.
With reference to the possible implementation of the first of first aspect or first aspect, second in first aspect is possible
In implementation, before the MME obtains the session Handover Number STN-SR of the SRVCC in the user signing contract information of the UE,
Methods described also includes：
If not including the user signing contract information of the UE in the MME, the MME is sent to ownership place register HSS
User data requests message；The user data requests message is used for the institute to the STN-SR of the HSS request bags containing the UE
State UE user signing contract information；
The MME receives the user data requests response message of the HSS feedbacks；The user data requests response message
Include the user signing contract information of the UE.
With reference to the possible implementation of the first of first aspect or first aspect, the third in first aspect is possible
In implementation, the handover request message is on S1-AP UE Context Modification Request S1-AP UE
Hereafter change request message.
Second aspect, there is provided a kind of SRVCC trigger flows method, including：
Base station receives the handover request message that mobile management entity MME is sent according to circuit domain dropping CSFB access requests；
The handoff request message includes UE ability parameter and the SRVCC of UE session Handover Number STN-SR；The UE's
Ability parameter is used to represent that the UE possesses injection frequency continuous voice call SRVCC abilities；The STN-SR represents the MME
Support SRVCC and the MME opens the SRVCC to the UE；
When the base station is according to the UE measurement reports reported determine the UE current network conditions suitably triggering
During SRVCC flows, the base station is according to the UE included in the handover request message ability parameter and the UE
STN-SR, in the case of no VoLTE voice bearers, the SRVCC flows are triggered, and handoff response is sent to the MME
Message, so that the MME is after the switching response message of the base station feedback is received, according to the finger of the switching response message
Show to moving exchanging center MSC and send the instruction of SRVCC business, so that the MSC indicates to perform according to the SRVCC business
SRVCC flows；
Wherein, the SRVCC flows include：The MSC is indicated to IP multimedia subsystem according to the SRVCC business
IMS sends resource allocation request so that the IMS indicates that the MSC distributes for the UE according to the resource allocation request
Establish the resource needed for CS carryings.
The third aspect, there is provided a kind of mobile management entity MME, including：
Receiving unit, for receiving the circuit domain dropping CSFB access requests of user equipment (UE) transmission；The CSFB accesses
Request includes the ability parameter of the UE；The ability parameter of the UE is continuous for representing that the UE possesses injection frequency audio call
Property SRVCC abilities；
Acquiring unit, the session Handover Number STN-SR of the SRVCC in user signing contract information for obtaining the UE；Institute
State STN-SR and represent that the MME supports SRVCC and the MME opens the SRVCC to the UE；
Transmitting element, for after the CSFB access requests are received, handover request message to be sent to base station；It is described to cut
Change the UE that request message includes the ability parameter for the UE that the receiving unit receives and the acquiring unit obtains
STN-SR；
The transmitting element, it is additionally operable to after the switching response message of the base station feedback is received, according to the switching
The instruction of response message sends the instruction of SRVCC business to moving exchanging center MSC, so that the MSC is according to the SRVCC business
Instruction performs SRVCC flows；
Wherein, the SRVCC flows include：The MSC is indicated to IP multimedia subsystem according to the SRVCC business
IMS sends resource allocation request so that the IMS indicates that the MSC distributes for the UE according to the resource allocation request
Establish the resource needed for CS carryings.
In the first possible implementation of the third aspect, the transmitting element disappears to base station transmission handover request
During breath, it is specifically used for：The handover request message for including circuit domain dropping CSFB signs is sent to the base station；It is wherein described
CSFB signs are used to represent that the UE needs to perform CSFB flows.
With reference to the 3rd face or the first possible implementation of the third aspect, in second of possible reality of the third aspect
In existing mode, the transmitting element, if being additionally operable to not include the user signing contract information of the UE in the MME, the MME to
Ownership place register HSS sends user data requests message；The user data requests message is used to contain to the HSS request bags
The STN-SR of UE UE user signing contract information；
The receiving unit, it is additionally operable to receive the user data requests response message of the HSS feedbacks；The user data
Request response includes the user signing contract information of the UE.
With reference to the possible implementation of the first of the third aspect or the third aspect, the third in the third aspect is possible
In implementation, the handover request message is on S1-AP UE Context Modification Request S1-AP UE
Hereafter change request message.
Fourth aspect, there is provided a kind of base station, including：
Receiving unit, the switching sent for receiving mobile management entity MME according to circuit domain dropping CSFB access requests
Request message；The handoff request message includes UE ability parameter and the SRVCC of UE session Handover Number STN-SR；
The ability parameter of the UE is used to represent that the UE possesses injection frequency continuous voice call SRVCC abilities；The STN-SR tables
Show that the MME supports SRVCC and the MME opens the SRVCC to the UE；
Trigger element, for determining the UE current network conditions according to the UE measurement reports reported when the base station
When suitably triggering the SRVCC flows, according to being included in the handover request message that the receiving unit receives
The STN-SR of UE ability parameter and the UE, in the case of no VoLTE voice bearers, the SRVCC flows are triggered, and
Switching response message, so that the MME is after the switching response message of the base station feedback is received, root are sent to the MME
The instruction of SRVCC business is sent to moving exchanging center MSC according to the instruction of the switching response message, so that the MSC is according to institute
State the instruction of SRVCC business and perform SRVCC flows；
Wherein, the SRVCC flows include：The MSC is indicated to IP multimedia subsystem according to the SRVCC business
IMS sends resource allocation request so that the IMS indicates that the MSC distributes for the UE according to the resource allocation request
Establish the resource needed for CS carryings.
SRVCC trigger flows method, mobile management entity and base station provided in an embodiment of the present invention, MME receive UE and sent
CSFB access requests, and obtain the STN-SR in UE user signing contract information, then MME is receiving CSFB access requests
Afterwards, the handover request message of the STN-SR comprising UE is sent to base station, base station is it is determined that UE current network conditions suitably trigger
, can be according to the instruction of handover request message, in the case of no VoLTE voice bearers, triggering SRVCC streams during SRVCC flows
Journey, and switching response message is sent to MME, so that MME is sent out according to the instruction of the switching response message to moving exchanging center MSC
SRVCC business is sent to indicate, MSC indicates to perform SRVCC flows according to SRVCC business, so as to pass through execution during CSFB
SRVCC flows, CSFB speech business is also placed in IMS subnets and is managed so that IMS systems can be unified to CSFB
Voice resource and IMS voice resources carry out unified configuration and management.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of SRVCC trigger flows method provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of another SRVCC trigger flows method provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet of another SRVCC trigger flow method provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of mobile management entity provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of base station provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiments of the invention are related to circuit domain dropping (English：Circuit Switched Fallback, referred to as
CSFB) technology and injection frequency continuous voice call (English：Single Radio Voice Call Continuity, referred to as
SRVCC) technology.Specifically, CSFB technologies are UE need in the lte networks carry out speech business when, pass through CSFB technologies, general
UE falls back to Generation Mobile Telecommunication System technology (English：Second Generation, abbreviation 2G)/3rd generation mobile communication technology
(English：3rd Generation, abbreviation 3G) in network, speech business is realized by 2/3G networks.And SRVCC technologies can be with
Ensure that UE carries out the networking telephone (English in the lte networks：Voice over Internet Protocol, abbreviation VoIP), and
Enter from LTE network after 2/3G networks and still keep the continuation of audio call, that is, be used the UE of VoLTE speech businesses from
After LTE network enters 2G/3G networks, UE can be smooth between VoIP voices and CS domains voice to realize by performing SRVCC
Switching, so as to ensure that speech business will not be interrupted.
In the prior art, CSFB flows specifically include：When UE needs to carry out audio call in the lte networks, the UE
CSFB access requests (e.g., ESR message), mobile management entity (English can be initiated to network side：Mobility Management
Entity, abbreviation MME) after the CSFB access requests are received, S1-AP UE context modification request (English can be sent to base station
Text：S1-AP UE Context Modification Request), carry out signals base UE because CSFB speech businesses need to fall after rise
To 2/3G networks, follow-up falling process is performed by base station；SRVCC flows specifically include：4G networks are walked out into 2/ in UE
Behind 3G network region, IP multimedia subsystem (English：IP Multimedia Subsystem, abbreviation IMS) anchor point need from
Original MME moves to mobile switching centre's (English：Mobile Switching Center, abbreviation MSC) on, then pass through
MSC continues to realize speech business, and therefore, above-mentioned SRVCC flows can be divided into (Inter-RAT Handover) network switching
Flow and the two flows of (Session Transfer) Session Hand-off flow.
Embodiment one
The embodiment of the present invention provides a kind of SRVCC trigger flows method, as shown in figure 1, can be realized by MME, wherein,
The method of the SRVCC trigger flows specifically comprises the following steps：
101st, MME receives the CSFB access requests that UE is sent.
Wherein, above-mentioned circuit domain dropping (English：Circuit Switched Fallback, abbreviation CSFB) access and ask
Seek the ability (English including UE：Capability) parameter, the ability parameter of the UE are used to represent that UE possesses SRVCC abilities.Should
CSFB access requests are used to trigger CSFB flows.Specifically, above-mentioned CSFB access requests can be expansion service request (English
Text：Extended Service Request, abbreviation ESR) message.
102nd, MME obtains the STN-SR in UE user signing contract information.
Wherein, above-mentioned SRVCC session Handover Number (English：STN-SR) represent that MME supports SRVCC and the MME
SRVCC is opened to UE.Specifically, MME just triggers CSFB flows, if desired existed after the ESR message of UE transmissions is received
SRVCC flows are triggered under CSFB processes, then the MME needs to obtain the STN-SR in the user signing contract information of the UE.If in the MME
The user signing contract information of the UE is stored, then the MME directly obtains the STN- of the UE from the user signing contract information of the UE
SR.If not storing the user signing contract information of the UE in the MME, the MME is needed from the ownership place register (English：Home
Subscriber Server, abbreviation HSS) side obtain include the UE STN-SR the UE user signing contract information.
Optionally, if not storing the user signing contract information of the UE in the MME, step 102 specifically can be as follows：
If not including UE user signing contract information in 102a, MME, MME sends user data requests message to HSS.
Wherein, above-mentioned user data requests message is used for the use of from the UE to STN-SR of the HSS request bags containing the UE
Family signing information.
102b, MME receive the user data requests response message of HSS feedbacks.
Wherein, above-mentioned user data requests response message includes the user signing contract information of the UE.
Exemplary, after MME receives the ESR requests of UE transmissions, known according to the ability parameter of the UE in the ESR message
After the UE has SRVCC functions, just need to obtain the STN-SR of the UE to represent that it supports SRVCC and by SRVCC to the UE
It is open, if the MME not the user signing contract information of the UE when, the MME (can be used to handle and call IP multimedia subsystems to HSS
System (English：IP Multimedia Subsystem, abbreviation IMS) network entity customer data base, and perform the identity of user
Authentication vs. authorization, and the information of relevant user physical location can be provided) a user data requests information is sent, so as to the HSS
The user signing contract information of the UE is downloaded from the customer data base of the IMS network entity according to the instruction of the user request information,
And the user signing contract information of the UE is fed back to by the MME by user data request response.
103rd, MME sends handover request message after CSFB access requests are received to base station.
Wherein, above-mentioned handoff request message includes the ability parameter of the UE and the STN-SR of the UE.Above-mentioned switching please
It can be S1-AP UE context modification requests (English to seek message：S1-AP UE Context Modification
Request) message.In the prior art, the S1-AP UE context modification request message is used for when UE is in Idle state
Indicate base station triggers CSFB flows.
104th, MME is after the switching response message of base station feedback is received, according to the instruction of the switching response message to MSC
The instruction of SRVCC business is sent, so that MSC indicates execution SRVCC flows according to SRVCC business.
Wherein, the instruction of SRVCC business refers to MME to mobile switching centre's (English：Mobile Switching Center,
Abbreviation MSC) send to control MSC perform SCVCC flows command information, the SRVCC business instruction can be CS resources
Configure message (English：CS Resource Relocation), performed accordingly during CSFB for indicating the MSC
SRVCC flows.Wherein, above-mentioned SRVCC flows include：MSC according to SRVCC business indicate to IMS send resource allocation request,
So that IMS indicates that MSC is the resource needed for CS carryings are established in UE distribution according to resource allocation request.
Exemplary, MSC sends Session after the CS resource distribution message of MME transmissions is received, to IMS network
Transfer processes, while this UE mark is carried, IMS replies to MSC and establishes CS carryings need that how many resource distributed to this UE
Message, then MSC consults resource with RNC again and prepared, and distributes corresponding resource for the UE, and after distributing, MSC replys MME
Response message, MME trigger switchings of the UE from 4G networks to 2/3G networks again.
Optionally, if after SRVCC flows are triggered during CSFB, the UE subsequently also needs to continue executing with CSFB streams
Journey, i.e. the CSFB requirementss of process are fallen UE to 2/3G networks after rise from 4G networks using SRVCC technologies, continue to complete CSFB streams
During the subsequent process of journey, then step 103 specifically includes following content：
103a, MME send the handover request message for including CSFB signs to base station.
Wherein, above-mentioned CSFB signs (English：CSFB Indicator) it is used to represent that UE needs to perform CSFB streams
Journey.Exemplary, if after SRVCC flows are triggered during CSFB, the UE subsequently also needs to continue executing with CSFB flows, then
Need to increase a CSFB Indicator in the handover request message that MME is sent to base station, so that the MME is by the CSFB
Indicator is sent to MSC by the instruction of SRVCC business so that the MSC can both perform SRVCC flows, can also pass through
After SRVCC realizes the falling from 4G networks to 2/3G networks, CSFB flows are continued executing with.
SRVCC trigger flows method provided in an embodiment of the present invention, MME receives the CSFB access requests that UE is sent, and obtains
The STN-SR in UE user signing contract information is taken, then MME is sent comprising UE after CSFB access requests are received to base station
STN-SR handover request message, receives the switching response message of base station feedback, and according to the instruction of the switching response message to
Moving exchanging center MSC sends the instruction of SRVCC business, and MSC indicates to perform SRVCC flows according to SRVCC business, so as in CSFB
During by performing SRVCC flows, CSFB speech business is also placed in IMS subnets and is managed so that IMS systems
It can unify to carry out CSFB voice resources and IMS voice resources unified configuration and management.
Embodiment two
The embodiment of the present invention provides a kind of SRVCC trigger flows method, as shown in Fig. 2 can be realized by base station, should
SRVCC trigger flow methods specifically comprise the following steps：
201st, base station receives the handover request message that MME is sent according to CSFB access requests.
Wherein, above-mentioned handoff request message includes UE ability parameter and UE STN-SR..Specifically, above-mentioned UE
Ability parameter be used for represent that the UE possesses SRVCC abilities；And above-mentioned STN-SR represents that MME supports SRVCC and the MME will
SRVCC opens to UE.
202nd, when the measurement report that base station reports according to UE determines that UE current network conditions suitably trigger SRVCC flows,
Base station is according to the UE included in handover request message ability parameter and UE STN-SR, in the feelings of no VoLTE voice bearers
Under condition, SRVCC flows are triggered, and switching response message is sent to MME, so that the MME rings in the switching for receiving base station feedback
After answering message, the instruction of SRVCC business is sent to MSC according to the instruction of switching response message.
Wherein, above-mentioned SRVCC business indicates to be used to indicate that the MSC performs SRVCC flows during CSFB.Above-mentioned
SRVCC flows include：MSC indicates to send resource allocation request to IMS network according to SRVCC business so that IMS network is according to money
Source distribution request carries required resource to indicate that MSC establishes CS for UE distribution.
Exemplary, base station can receive the measurement report of UE transmissions, and the UE in measurement report is presently in network
Signal strength information come judge the UE be presently in network environment whether suitably trigger SRVCC flows, if signal intensity is enough
By force, then judge that the UE is presently in network environment and suitably triggers SRVCC flows.Then, base station is according to the UE's got from MME
It whether there is STN-SR in ability parameter and the UE user signing contract information, to determine whether to trigger SRVCC flows, if being unsatisfactory for
Above-mentioned either condition, then it will not trigger SRVCC flows.
SRVCC trigger flows method provided in an embodiment of the present invention, base station receive the handover request of the STN-SR comprising UE
Message, when determining that UE current network conditions suitably trigger SRVCC flows, can not had according to the instruction of handover request message
In the case of VoLTE voice bearers, SRVCC flows are triggered, and switching response message is sent to MME, so that MME is according to the switching
The instruction of response message sends the instruction of SRVCC business to moving exchanging center MSC, and MSC indicates to perform according to SRVCC business
SRVCC flows, so as to, by performing SRVCC flows, CSFB speech business is also placed in during CSFB in IMS network
It is managed so that IMS systems can be unified to carry out CSFB voice resources and IMS voice resources unified configuration and management.
Embodiment three
SRVCC trigger flows method provided in an embodiment of the present invention is carried out in specific scene by exemplary below
Introduce.The explanation of the technical term related to above-described embodiment, concept etc. is referred to the above embodiments in following examples.
After the present embodiment during CSFB mainly for SRVCC flows are triggered, UE subsequently also needs to continue executing with the mistake of CSFB flows
Journey.
As shown in figure 3, specific SRVCC trigger flow methods are as follows.
301st, MME receives the Extended Service Request message that UE is sent.
Wherein, above-mentioned ESR message is used to trigger CSFB flows, and UE capability parameters are included in the ESR message.
Above-mentioned UE ability parameter is used to represent that the UE possesses SRVCC abilities.
If the 302, not including UE user signing contract information in MME, the MME sends an Insert Subscriber to HSS
Data Request message.
Wherein, above-mentioned insertion user data requests (English：Insert Subscriber Data Request) message
For asking the user signing contract information of the UE to HSS.
303rd, HSS searches the signing letter of the UE according to the instruction of Insert Subscriber Data Request message
Breath, and the signing information of the UE is fed back to by the MME by Insert Subscriber Data Response message.
Wherein, the response (English of above-mentioned insertion user data：Insert Subscriber Data Response) disappear
The STN-SR of the UE is included in breath.
304th, MME disappears the S1-AP UE Context Modification Request for including CSFB signs
Breath is sent to base station.
Wherein, above-mentioned CSFB signs are used to represent that the UE is a UE for needing to perform CSFB；Above-mentioned S1-AP
The STN-SR of ability parameter and the UE in UE Context Modification Request message also including the UE,.
305th, base station is after the S1-AP UE Context Modification Request message is received, according to UE
The measurement report reported determines whether UE current network conditions suitably trigger SRVCC flows.
Asked specifically, base station is sent to UE, it is desirable to the measurement report of UE reporting subdistricts, so that base station is according to measurement report
The intensity of middle signal determines whether current environment suitably triggers SRVCC flows.
306th, when the measurement report that base station reports according to UE determines that UE current network conditions suitably trigger SRVCC flows,
Base station is according to the UE included in the S1-AP UE Context Modification Request message ability parameter and UE
STN-SR, in the case of no VoLTE voice bearers, SRVCC flows are triggered, and S1-AP UE Context are sent to MME
Modification Response message.
307th, MME is receiving the S1-AP UE Context Modification Response message of base station feedback
Afterwards, SRVCC business is sent to MSC according to the instruction of the S1-AP UE Context Modification Response message to refer to
Show.
Specifically, MME responds (English in the S1-AP UE contextual modifications for receiving base station feedback：S1-AP UE
Context Modification Response) after message, because the triggering of SRVCC flows is the Extended that is sent by UE
Service Request message starts, and therefore, the MME can identify (English in no service quality rating：Quality of
Service Class Identifier, abbreviation QCI)=1 carrying (i.e. LTE speech businesses are (English：Voice over LTE, letter
Claim VoLTE) carrying) in the case of message, SRVCC flows are triggered, and the instruction of SRVCC business is sent to MSC.But due to this
Embodiment after triggering SRVCC flows during CSFB mainly for CSFB flows are continued executing with, therefore, above-mentioned SRVCC industry
Business is designated as the CS for containing a CSFB Indicator Resource Relocation message.Specifically, MME is to MSC
When sending the instruction of SRVCC business, the MME (can carry out information exchange separately through SGs interfaces between MME and MSC in CSFB technologies
Interface) send CSFB Indicator to MSC, information exchange (is carried out by Sv interfaces between MME and MSC in SRVCC technologies
Interface) the CS Resource Relocation message is sent, the MME can also directly be sent by Sv interfaces and include CSFB
Indicator CS Resource Relocation message.
308th, the instruction that MSC indicates according to SRVCC business performs SRVCC flows.
Exemplary, MSC sends Session after the SRVCC business instruction of MME transmissions is received, to IMS network
Transfer processes, while this UE mark is carried, IMS replies to MSC and establishes the how many distribution of CS carrying needs distribution to this UE
The message of resource, then MSC consults resource preparation with RNC again, and distributes corresponding resource for the UE, and after distributing, MSC is replied
MME response message, MME trigger switchings of the UE from 4G networks to 2/3G networks again.
SRVCC trigger flows method provided in an embodiment of the present invention, MME receives the ESR message that UE is sent, and obtains UE's
STN-SR in user signing contract information, then MME is after ESR message is received, to cutting for base station STN-SR of the transmission comprising UE
Request message is changed, base station, can be according to the finger of handover request message when it is determined that UE current network conditions suitably trigger SRVCC flows
Show, in the case of no VoLTE voice bearers, trigger SRVCC flows, and switching response message is sent to MME, so as to MME
The instruction of SRVCC business is sent to moving exchanging center MSC according to the instruction of the switching response message, MSC refers to according to SRVCC business
Show and perform SRVCC flows, so that, by performing SRVCC flows, CSFB speech business is also placed in into IMS during CSFB
It is managed in network so that IMS systems can be unified to carry out CSFB voice resources and IMS voice resources unified configuration and pipe
Reason.
Example IV
The embodiment of the present invention provides a kind of MME4, as shown in figure 4, the MME4 includes：Receiving unit 41, the and of acquiring unit 42
Transmitting element 43, wherein：
Receiving unit 41, for receiving the CSFB access requests of UE transmissions, the ability that the CSFB access requests include UE is joined
Number, the ability parameter of the UE are used to represent that the UE possesses SRVCC abilities.
Acquiring unit 42, the STN-SR in user signing contract information for obtaining UE；The STN-SR represents that MME is supported
The SRVCC and MME opens SRVCC to UE.
Transmitting element 43, for after the CSFB access requests are received, handover request message to be sent to base station；The switching
The UE's that the ability parameter for the UE that request message receives including above-mentioned receiving unit 41 and above-mentioned acquiring unit 42 obtain
STN-SR。
Above-mentioned transmitting element 43, is additionally operable to after the switching response message of base station feedback is received, and is rung according to the switching
The instruction of message is answered to send the instruction of SRVCC business to MSC, so that MSC indicates execution SRVCC flows according to SRVCC business.
Wherein, above-mentioned SRVCC flows include：MSC indicates that sending resource allocation to IMS network asks according to SRVCC business
Ask so that the IMS network indicates that the MSC is that the required resource of CS carryings is established in UE distribution according to resource allocation request.
Optionally, above-mentioned transmitting element 43 is specifically used for when sending handover request message to base station：Sent to base station
Include the handover request message of circuit domain dropping CSFB signs；Wherein the CSFB signs are used to represent that UE needs to perform
CSFB flows.
Optionally, above-mentioned transmitting element 43 is additionally operable to：If UE user signing contract information is not included in above-mentioned MME,
User data requests message is sent to HSS；The user data requests message is used for the UE to STN-SR of the HSS request bags containing UE
User signing contract information.
Above-mentioned receiving unit 41, it is additionally operable to receive the user data requests response message of HSS feedbacks；The user data please
Response message is asked to include UE user signing contract information.
Optionally, handover request message is S1-AP UE Context Modification Request.
Mobile management entity provided in an embodiment of the present invention, MME receives the CSFB access requests that UE is sent, and obtains UE's
STN-SR in user signing contract information, then MME sent to base station after CSFB access requests are received and include UE STN-SR
Handover request message, receive the switching response message of base station feedback, and handed over to mobile according to the instruction of the switching response message
Switching center9 MSC sends the instruction of SRVCC business, and MSC indicates to perform SRVCC flows according to SRVCC business, so as to during CSFB
By performing SRVCC flows, CSFB speech business is also placed in IMS network and is managed so that IMS systems can unite
A pair of CSFB voice resources and IMS voice resources carry out unified configuration and management.
Embodiment five
The embodiment of the present invention provides a kind of base station 5, as shown in figure 5, the base station 5 includes：Receiving unit 51 and trigger element
52, wherein：
Receiving unit 51, the handover request message sent for receiving MME according to CSFB access requests；The handover request disappears
Breath includes UE ability parameter and UE STN-SR；UE ability parameter is used to represent that the UE possesses SRVCC abilities；The STN-SR
Represent that MME supports SRVCC and the MME opens SRVCC to UE.
Trigger element 52, the measurement report for being reported when base station according to UE determine that the UE current network conditions suitably trigger
During SRVCC flows, the UE ability parameter and UE STN- that are included in the handover request message received according to receiving unit 51
SR, in the case of no VoLTE voice bearers, SRVCC flows are triggered, and switching response message is sent to MME, so as to MME
After the switching response message of base station feedback is received, SRVCC business is sent to MSC according to the instruction of the switching response message and referred to
Show, so that MSC indicates execution SRVCC flows according to SRVCC business.
Wherein, above-mentioned SRVCC flows include：MSC indicates that sending resource allocation to IMS network asks according to SRVCC business
Ask so that the IMS network indicates that the MSC is that the required resource of CS carryings is established in UE distribution according to resource allocation request.
Base station provided in an embodiment of the present invention, base station receive the handover request message of the STN-SR comprising UE, and determine UE
When current network conditions suitably trigger SRVCC flows, VoLTE voice bearers can not had according to the instruction of handover request message
In the case of, SRVCC flows are triggered, and switching response message is sent to MME, so that MME is according to the finger of the switching response message
Showing to moving exchanging center MSC and send the instruction of SRVCC business, MSC indicates to perform SRVCC flows according to SRVCC business, so that
By performing SRVCC flows during CSFB, CSFB speech business is also placed in IMS network and is managed so that IMS
System can be unified to carry out CSFB voice resources and IMS voice resources unified configuration and management.
It is apparent to those skilled in the art that for convenience and simplicity of description, only with above-mentioned each function
The division progress of module, can be as needed and by above-mentioned function distribution by different function moulds for example, in practical application
Block is completed, i.e., the internal structure of device is divided into different functional modules, to complete all or part of work(described above
Energy.The system of foregoing description and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, herein
Repeat no more.
In several embodiments provided herein, it should be understood that disclosed system and method, it can be passed through
Its mode is realized.For example, system embodiment described above is only schematical, for example, the module or unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of unit or logical
Letter connection, can be electrical, mechanical or other forms.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
Described above, above example is only to illustrate the technical scheme of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of each embodiment technical scheme of the application.
Claims (10)
- A kind of 1. SRVCC trigger flows method, it is characterised in that including：Mobile management entity MME receives the circuit domain dropping CSFB access requests that user equipment (UE) is sent；The CSFB accesses please Asking includes the ability parameter of the UE；The ability parameter of the UE is used to represent that the UE possesses injection frequency continuous voice call SRVCC abilities；The MME obtains the session Handover Number STN-SR of the SRVCC in the user signing contract information of the UE；The STN-SR tables Show that the MME supports SRVCC and the MME opens the SRVCC to the UE；The MME sends handover request message after the CSFB access requests are received, to base station；The handover request message The STN-SR of ability parameter and the UE including the UE；The MME after the switching response message of the base station feedback is received, according to the instruction of the switching response message to Moving exchanging center MSC sends the instruction of SRVCC business, so that the MSC indicates that performing SRVCC flows according to the SRVCC business Journey；Wherein, the SRVCC flows include：The MSC indicates to send out to IP multimedia subsystem IMS according to the SRVCC business Send resource allocation request so that the IMS indicates that the MSC establishes CS for UE distribution according to the resource allocation request Resource needed for carrying.
- 2. according to the method for claim 1, it is characterised in that the MME sends handover request message to base station and specifically wrapped Include：The MME sends the handover request message for including circuit domain dropping CSFB signs to the base station；It is wherein described CSFB signs are used to represent that the UE needs to perform CSFB flows.
- 3. method according to claim 1 or 2, it is characterised in that the MME is obtained in the user signing contract information of the UE SRVCC session Handover Number STN-SR before, methods described also includes：If not including the user signing contract information of the UE in the MME, the MME sends user to ownership place register HSS Data request information；The user data requests message is used for the UE to the STN-SR of the HSS request bags containing the UE User signing contract information；The MME receives the user data requests response message of the HSS feedbacks；The user data requests response message includes The user signing contract information of the UE.
- 4. method according to claim 1 or 2, it is characterised in that the handover request message is S1-AP UE Context Modification Request S1-AP UE context modification request message.
- A kind of 5. SRVCC trigger flows method, it is characterised in that including：Base station receives the handover request message that mobile management entity MME is sent according to circuit domain dropping CSFB access requests；It is described Handoff request message includes UE ability parameter and the SRVCC of UE session Handover Number STN-SR；The ability of the UE Parameter is used to represent that the UE possesses injection frequency continuous voice call SRVCC abilities；The STN-SR represents that the MME is supported The SRVCC and MME opens the SRVCC to the UE；When the base station determines that the UE current network conditions suitably trigger the SRVCC according to the UE measurement reports reported During flow, the base station according to the UE included in the handover request message ability parameter and the STN-SR of the UE, In the case of no VoLTE voice bearers, the SRVCC flows are triggered, and switching response message is sent to the MME, with Toilet states MME after the switching response message of the base station feedback is received, according to the instruction of the switching response message to shifting Dynamic switching centre MSC sends the instruction of SRVCC business, so that the MSC indicates execution SRVCC flows according to the SRVCC business；Wherein, the SRVCC flows include：The MSC indicates to send out to IP multimedia subsystem IMS according to the SRVCC business Send resource allocation request so that the IMS indicates that the MSC establishes CS for UE distribution according to the resource allocation request Resource needed for carrying.
- A kind of 6. mobile management entity MME, it is characterised in that including：Receiving unit, for receiving the circuit domain dropping CSFB access requests of user equipment (UE) transmission；The CSFB access requests Include the ability parameter of the UE；The ability parameter of the UE is used to represent that the UE possesses injection frequency continuous voice call SRVCC abilities；Acquiring unit, the session Handover Number STN-SR of the SRVCC in user signing contract information for obtaining the UE；It is described STN-SR represents that the MME supports SRVCC and the MME opens the SRVCC to the UE；Transmitting element, for after the CSFB access requests are received, handover request message to be sent to base station；The switching please Message is asked to include the ability parameter of the UE that the receiving unit receives and the UE that the acquiring unit obtains STN-SR；The transmitting element, it is additionally operable to after the switching response message of the base station feedback is received, according to the handoff response The instruction of message sends the instruction of SRVCC business to moving exchanging center MSC, so that the MSC indicates according to the SRVCC business Perform SRVCC flows；Wherein, the SRVCC flows include：The MSC indicates to send out to IP multimedia subsystem IMS according to the SRVCC business Send resource allocation request so that the IMS indicates that the MSC establishes CS for UE distribution according to the resource allocation request Resource needed for carrying.
- 7. MME according to claim 6, it is characterised in that the transmitting element is sending handover request message to base station When, it is specifically used for：The handover request message for including circuit domain dropping CSFB signs is sent to the base station；It is wherein described CSFB signs are used to represent that the UE needs to perform CSFB flows.
- 8. the MME according to claim 6 or 7, it is characterised in that：The transmitting element, if being additionally operable to not include the user signing contract information of the UE in the MME, the MME is to ownership Ground register HSS sends user data requests message；The user data requests message is used for the HSS request bags containing described UE STN-SR UE user signing contract information；The receiving unit, it is additionally operable to receive the user data requests response message of the HSS feedbacks；The user data requests Response message includes the user signing contract information of the UE.
- 9. the MME according to claim 6 or 7, it is characterised in that the handover request message is S1-AP UE Context Modification Request S1-AP UE context modification request message.
- A kind of 10. base station, it is characterised in that including：Receiving unit, the handover request sent for receiving mobile management entity MME according to circuit domain dropping CSFB access requests Message；The handoff request message includes UE ability parameter and the SRVCC of UE session Handover Number STN-SR；It is described UE ability parameter is used to represent that the UE possesses injection frequency continuous voice call SRVCC abilities；The STN-SR represents institute State MME support SRVCC and the MME opens the SRVCC to the UE；Trigger element, for determining that the UE current network conditions are suitable according to the UE measurement reports reported when the base station When triggering the SRVCC flows, the UE's that is included in the handover request message received according to the receiving unit The STN-SR of ability parameter and the UE, in the case of no VoLTE voice bearers, trigger the SRVCC flows, and to institute State MME and send switching response message, so that the MME is after the switching response message of the base station feedback is received, according to institute The instruction for stating switching response message sends the instruction of SRVCC business to moving exchanging center MSC, so that the MSC is according to The instruction of SRVCC business performs SRVCC flows；Wherein, the SRVCC flows include：The MSC indicates to send out to IP multimedia subsystem IMS according to the SRVCC business Send resource allocation request so that the IMS indicates that the MSC establishes CS for UE distribution according to the resource allocation request Resource needed for carrying.
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| CN106487528B (en) * | 2015-08-27 | 2020-04-17 | 中国移动通信集团公司 | Method and device for acquiring VoLTE subscription state of user |
| WO2018095015A1 (en) * | 2016-11-25 | 2018-05-31 | 华为技术有限公司 | Circuit switched fallback method, base station, mobility management entity and terminal |
| CN108271192B (en) * | 2016-12-31 | 2021-03-23 | 中国移动通信集团吉林有限公司 | VoLTE abnormal scene positioning method and mobility management entity |
| CN108419230B (en) * | 2018-02-13 | 2021-03-16 | Oppo广东移动通信有限公司 | Communication method, base station and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217702A (en) * | 2008-01-09 | 2008-07-09 | 中兴通讯股份有限公司 | A realization method of IP multimedia subsystem centralized business call reservation |
| CN101605318A (en) * | 2008-06-13 | 2009-12-16 | 华为技术有限公司 | A kind of method, Apparatus and system of realizing professional switching |
| WO2011026438A1 (en) * | 2009-09-04 | 2011-03-10 | 华为技术有限公司 | Method, equipment and network system for voice handover of inter-radio access technology |
| CN102244911A (en) * | 2010-05-10 | 2011-11-16 | 中兴通讯股份有限公司 | Method and system for cross-domain switching of call based on IP multimedia subsystem |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217702A (en) * | 2008-01-09 | 2008-07-09 | 中兴通讯股份有限公司 | A realization method of IP multimedia subsystem centralized business call reservation |
| CN101605318A (en) * | 2008-06-13 | 2009-12-16 | 华为技术有限公司 | A kind of method, Apparatus and system of realizing professional switching |
| WO2011026438A1 (en) * | 2009-09-04 | 2011-03-10 | 华为技术有限公司 | Method, equipment and network system for voice handover of inter-radio access technology |
| CN102244911A (en) * | 2010-05-10 | 2011-11-16 | 中兴通讯股份有限公司 | Method and system for cross-domain switching of call based on IP multimedia subsystem |
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