CN110366213A - A kind of method for switching languages and device and terminal - Google Patents
A kind of method for switching languages and device and terminal Download PDFInfo
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- CN110366213A CN110366213A CN201810307365.7A CN201810307365A CN110366213A CN 110366213 A CN110366213 A CN 110366213A CN 201810307365 A CN201810307365 A CN 201810307365A CN 110366213 A CN110366213 A CN 110366213A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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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
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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
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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Abstract
The invention discloses a kind of method for switching languages and device and terminals, this method comprises: AMF receives the switching request that base station is sent；It is carried in the switching request and is switched to circuit domain instruction；AMF obtains PDU session and indicates information；After the switching request for receiving base station transmission, AMF indicates information according to the PDU session, to corresponding SMF queued session information.Scheme through the invention, after AMF obtains PDU session instruction information, AMF can clearly know which PDU session IMS voice is built upon on, so as to request handover information to the SMF of the corresponding PDU session of IMS voice, the handover information to all SMF request switchings to circuit domain is not needed, the case where improving messages wastes, it also avoids the SMF unrelated with IMS voice and does not understand circuit domain instruction, generate and switch the situation that mistake occurs in subsequent step caused by the handover information to 4G.
Description
Technical field
The present invention relates to wireless communication field, espespecially a kind of method for switching languages and device and terminal.
Background technique
Mesh 3GPP (3rd Generation Partnership Project) begins one's study next-generation communication from from R14
System (NextGen System), has formally formulated 5G system specifications in R15.
Different with 4G system (Evolved Packet System, EPS), the voice service in 5G system is only capable of by IMS
(IP Multimedia Subsystem) subsystem provides.And in a 4 g system, voice service can be by IMS offer,
Abbreviation VoLTE (voice over Long Term Evolution)；Either circuit domain provides, abbreviation CSFB
(Circuit Switch fallback), when using CSFB technology, user UE needs to return back in 2G or 3G system
It goes using circuit domain voice service.
When in user's UE access 5G system and completing IMS registration, after starting IMS voice call, with the movement of user,
Out of the coverage area of 5G system, in order to guarantee the continuity of user speech business, user UE must be switched to 4G system
In continue to use VoLTE.At this time since the address IP of UE remains unchanged (by 4G, 5G interworking technology guarantees),
And 4G system and 5G system are all connected in the same IMS network, so can guarantee the continuity of voice.Fig. 1 shows its work
Make principle.
However, for certain operators, although deploying 4G system, voice service not instead of VoLTE scheme,
It uses circuit domain voice (as used CSFB).The UE just to converse in IMS for so accessing 5G, out of the covering of 5G system
When range, it is necessary to be switched to circuit domain and go.UE in synchronization, only have access into a network (such as 2G, 3G, 5G wherein it
One), referred to as single wireless (Single Radio).Under single wireless status, it is switched to circuit domain voice from IMS voer 5G, is claimed
For 5G SRVCC (Single Radio Voice Call Continuity).At present in standard, how it to be switched to circuit domain
There are no schemes.
Summary of the invention
To solve the above-mentioned problems, it the invention proposes a kind of method for switching languages and device and terminal, is capable of providing
A kind of solution of ISM voice from 5G network switching to circuit domain.
In order to solve the above-mentioned technical problem, the invention proposes a kind of method for switching languages, which comprises
Access receives the switching request that base station is sent with mobility control function AMF；It carries and cuts in the switching request
Change to circuit domain instruction；
AMF obtains Packet Data Unit PDU session and indicates information；
After the switching request for receiving base station transmission, AMF indicates information according to the PDU session, to corresponding
SMF queued session information.
The invention also provides a kind of method for switching languages, which comprises
Base station confirmation IMS voice needs to be switched to circuit domain；
Switching request is sent to AMF by base station；It is carried in the switching request and is switched to circuit domain instruction and corresponds to
Packet Data Unit PDU session indicate information so that the AMF indicates information to corresponding meeting according to the PDU session
Talk about control plane function SMF queued session information.
The invention also provides a kind of method for switching languages, which comprises
In the establishment process of IMS voice, session control face function SMF is sent to access and mobility control function AMF
Packet Data Unit PDU session indicates information.
The invention also provides a kind of voice switching device, setting is described in access and mobility control function AMF
Device includes:
First receiving unit, first receiving unit are used to receive the switching request of base station transmission；The switching request
In carry be switched to circuit domain instruction；And it obtains Packet Data Unit PDU session and indicates information；
Information Request unit, for receive base station transmission switching request after, according to the PDU session
Information is indicated, to corresponding session control face function SMF queued session information.
The invention also provides a kind of voice switching devices, are arranged on base station, described device includes:
Switch confirmation unit, for confirming that IMS voice needs to be switched to circuit domain；
Switching request unit, for switching request to be sent to AMF；It is carried in the switching request and is switched to circuit
Domain instruction and corresponding PDU session indicate information, so that the AMF indicates information to corresponding according to the PDU session
Session control face function SMF queued session information.
The invention also provides a kind of voice switching devices, are arranged on the function SMF of session control face, described device packet
It includes:
Transmission unit, for sending and dividing with mobility control function AMF to access in the establishment process of IMS voice
The IMS voice instruction of group data cell PDU session.
The invention also provides a kind of terminal, including memory, processor and it is stored on the memory and can be in institute
The computer program run on processor is stated, the processor realizes provided by the invention when executing the computer program
It anticipates the processing of method for switching languages a kind of.
The invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the computer
The processing of any one method for switching languages provided by the invention is realized when program is executed by processor.
Compared with prior art, technical solution provided by the invention includes: that AMF receives the switching request that base station is sent；Institute
It states to carry in switching request and is switched to circuit domain instruction；AMF obtains PDU session and indicates information；Receiving base station transmission
After switching request, AMF indicates the corresponding SMF queued session information of information according to the PDU session.Side through the invention
In the case of case has multiple PDU session after UE access 5G system, and the SMF of each PDU session is different,
After AMF obtains PDU session instruction information, AMF can clearly know which PDU session IMS voice is built upon
On, so as to request handover information to the SMF of the corresponding PDU session of IMS voice, do not need to request to all SMF
The case where switching the handover information to circuit domain, improving messages wastes also avoids the SMF unrelated with IMS voice and does not understand
Circuit domain instruction generates and switches the situation that mistake occurs in subsequent step caused by the handover information to 4G.
Detailed description of the invention
The attached drawing in the embodiment of the present invention is illustrated below, the attached drawing in embodiment be for it is of the invention into
One step understands, is used to explain the present invention, does not constitute a limitation on the scope of protection of the present invention together with specification.
Fig. 1 is continuity schematic diagram of the ISM over 5G provided in an embodiment of the present invention to circuit domain voice；
Fig. 2 is the framework description figure of voice switching system provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of method for switching languages provided in an embodiment of the present invention；
Fig. 4 is the flow chart of another method for switching languages provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another method for switching languages provided in an embodiment of the present invention；
Fig. 6 is the flow chart of another method for switching languages provided in an embodiment of the present invention；
Fig. 7 is the flow chart of one of voice provided in an embodiment of the present invention switching cancellation method；
Fig. 8 is the flow chart of another cancellation method in voice provided in an embodiment of the present invention switching.
Specific embodiment
For the ease of the understanding of those skilled in the art, the invention will be further described with reference to the accompanying drawing, not
It can be used to limit the scope of the invention.It should be noted that in the absence of conflict, embodiment in the application and
Various modes in embodiment can be combined with each other.
The network element that procedure of switching voice is related to is illustrated first, as shown in Fig. 2, being provided in an embodiment of the present invention
IMS voice over 5G switches the simplified architecture figure of CS voice, and the network element that is not closely related is no longer drawn, network element in framework
It is described as follows:
Terminal (UE, User Equipment) has the mode of a variety of access networks, accesses 2G or 3G by radio open
Network (hereinafter referred to as 2/3G network) or 5G network are simultaneously serviced.Terminal is by eating dishes without rice or wine and base station interactive information, by non-
The management entity of access layer signaling NAS (non-Access Stratum) and core net is (when access 5G and mobile management function
Energy AMF and session control face function SMF interactive information) interactive information.When UE 5G access when, IMS network can be linked into
In.
Here is 5G network-based control function:
5G RAN node (NG RAN, Radio Access Network) is responsible for the interface-free resources tune of accessing terminal to network
Degree and and the connection management eated dishes without rice or wine.5G RAN node is also referred to as next-generation base station, may be new wireless access technology base
Stand (gNB), it is also possible to enhance LTE technology base station (eLTE).
Access and mobility control function (AMF, Access and Mobility control Function): being core
Public control plane function in heart net.One only one AMF of user is responsible for examining the authentication of user, authorization and signing
It looks into guarantee that user is legitimate user；User mobility management, including location registration and temporary identifier distribution；When user initiates
When request is established in PDU session (Packet Data Unit, Packet Data Unit), suitable SMF is selected；Forward UE and
Non-Access Stratum (NAS, Non Access Stratum) signaling between SMF；Access layer AS between repeating base station and SMF
(Access Stratum) signaling.
Session control face function (SMF, Session Management Function): and terminal interaction, it is mainly responsible for
User PDU (Packet Data Unit) session establishment, modification and removal request is handled, UPF (User Plane is selected
Function, user plane functions)；Establish the connection of the user face between UE to UPF；With PCF (Policy Control
Function the functions such as QoS (Quality of Service) parameter of session) are determined together.Each PDU of UE
Session can have a SMF, multiple PDU session to can be multiple SMF.
User plane functions (UPF, User Plane Function): offer user's surface treatment function, including data forwarding,
QoS is executed.UPF also provides user face anchor point when user's movement, guarantees business continuance.
Uniform data management function (UDM, Unified Data Management): storing the subscription data of user,
Itself and the home subscribed services device (HSS, Home Subscription Server) in 4G epoch or the ownership position in 2/3G epoch
It is very similar to set register (HLR, Home Location Register).In practice, when an operator deployment is multiple
When network (multiple networks in such as 2G, 3G, 4G, 5G), UDM and HSS/HLR or conjunction are set, or increase internal connect
Mouthful.
Policy control functions (PCF, Policy Control Function): the authorization function of resource, and 4G are provided
The PCRF in epoch is very similar.
5G-CS IWF (the interoperability function of 5G system and circuit domain system, 5G-Circuit switch
Interworking function, hereinafter referred to as IWF).The logic function may be implemented in independent network entity (at this time
Need to define the interface function between AMF and IWF and the interface function between IWF and MSC), or realize existing
In network function.
If IWF is embodied as a part of MME, AMF and IWF just use existing N26 interface (between AMF and MME
Interface), the interface between IWF and MSC can use existing Sv interface (interface of MME and MSC)；If IWF is realized
In AMF, then between other functions of IWF and AMF, become internal interface, between AMF/IWF and MSC, can use existing
Sv interface, or define a new interface；
Here is the functional entity of 2/3G network:
2/3G wireless access network, wherein 2G, GERAN (GSM EDGE Radio Access Network, enhancing data speed
The global system for mobile communications Radio Access Network of rate) wireless access network, abbreviation BSS (Base station system),
Or 3G, UTRAN (Universal Terrestrial Radio Access Network, universal land radio access web)
Wireless access network, abbreviation RNS (Radio Network Subsystem)
Mobile switching centre (MSC, Mobile Switch Center), MSC provide circuit voice service, circuit data
Business and short message service.MSC may be divided into two kinds, and enhanced MSC (eMSC), and IWF are interactive；Serving MSC,
Serve the 2/3G wireless access network of UE access.EMSC and Serving MSC can be the same MSC, need circuit domain at this time
MSC all upgrade support and IWF interaction.Or eMSC and Serving MSC is not the same MSC, eMSC is anchor at this time
The switching of UE is completed in point MSC, and Serving MSC interaction.The interactive process of Anchor MSC and Serving MSC are existing
Technology repeats no more.
The signing in home location register (HLR, Home Location Register) the management domain CS, packet domain (PS)
Data, inquiring position information etc..
Here is the functional entity of IMS network:
Core network element call session control function (Call Session Control Function, abbreviation CSCF), it is complete
At the Call- Control1 of IMS network.CSCF points are to act on behalf of Proxy (abbreviation P-CSCF), inquiry Interrogating (abbreviation I-
CSCF) and service Serving (abbreviation S-CSCF) three types.
Application server (Application Server, abbreviation AS) composition, can provide specific business service, and AS can be with
It is independent entity, can also exist in S-CSCF.Control layer S-CSCF controls business touching according to the signing information of user
Hair calls the business on AS, realizes business function.Wherein SCC AS is to realize IMS voice over PS to circuit domain voice
Anchoring function.
Switching control function physically (Access Transfer Control Function, abbreviation ATCF), media anchor
It is scheduled in the access gateway (Access Transfer Gateway, abbreviation ATGW) of access switching control function entity control, by
ATCF/AGW switches as anchor point control, can shorten and draw in handoff procedure since distal end renewal process is too long
The voice interruption risen improves user experience.(ATCF/ATGW is optional function, has no effect on entire function and realizes.When there is no portion
When affixing one's name to ATCF/ATGW, P-CSCF is directly connected to I/S-CSCF, if MSC upgrading supports Session Initiation Protocol, MSC that can be directly connected to
Otherwise I/S-CSCF is connected to I/S-CSCF by MGCF function).
The embodiment of the present invention proposes a kind of method for switching languages, which comprises
AMF receives the switching request that base station is sent；It is carried in the switching request and is switched to circuit domain instruction；
AMF obtains PDU session and indicates information；
After the switching request for receiving base station transmission, AMF indicates information according to the PDU session, to corresponding
SMF queued session information.
Wherein, step AMF obtains Packet Data Unit PDU session instruction information and step AMF receives cutting for base station transmission
It changes between request without specific sequencing.
Wherein, goal systems session information can be translated by different network elements, be can be SMF generation, be also possible to
IWF is generated or AMF is generated.
The embodiment of the present invention proposes a kind of method for switching languages, which comprises
Step 11, AMF receive the switching request that base station is sent；It is carried in the switching request and is switched to circuit domain and refers to
Show；The circuit domain that is switched to also is carried in the switching request indicates corresponding PDU session instruction information.
Wherein, the PDU session instruction information is PDU session identification.Above-mentioned switching request is that base station is needed in IMS call
When being switched to circuit domain from the coverage area of 5G system, to the switching request for switching to circuit domain of AMF transmission.
Step 12, receive base station transmission switching request after, AMF according to the PDU session indicate information, to
Corresponding SMF queued session information.
In a step 11, base station determines the relevant PDU session of IMS voice (ims voice), and by above-mentioned PDU
The PDU session identification of session is sent to AMF.For example, passing through each PDU in each PDU session corresponding for UE
The value of the 5QI attribute of the corresponding qos flow of session may determine that whether PDU session is the relevant PDU of IMS voice
Session, 5QI=1 then illustrate that the qos flow has left IMS voice for, and base station is only it needs to be determined that meet the PDU of 5QI=1
Session, and the PDU session identification of above-mentioned PDU session is sent to AMF.By the above method, for IMS voice
Incoherent PDU session, AMF will not be to the corresponding SMF queued session information of these incoherent PDU session, no
The case where needing the handover information to all SMF request switchings to circuit domain, improving messages wastes, also avoids and IMS
Unrelated SMF does not understand circuit domain instruction, generates and switches the appearance mistake of subsequent step caused by the handover information to 4G
Situation.
It is described the invention also provides a kind of method for switching languages based on same as the previously described embodiments or similar design
Method includes:
Step 21, AMF obtain PDU session and indicate information；
Step 22, AMF receive the switching request that base station is sent；It is carried in the switching request and is switched to circuit domain and refers to
Show；
Step 23, receive base station transmission switching request after, AMF according to the PDU session indicate information, to
Corresponding SMF queued session information.
The realization process of step 21 is illustrated below with reference to two specific examples.
In the embodiment of the present invention, in one example, the AMF in step 21 obtains PDU session and indicates packet
It includes:
Step 211, in the establishment process of IMS voice, AMF receive SMF send PDU session indicate information.It is described
PDU session indicates information for IMS voice instruction；
In the embodiment of the present invention, SMF is IMS voice instruction to the AMF information transmitted, and such AMF is known that transmission
The PDU sessions carry of IMS voice instruction has IMS voice, if transmitting between AMF, as long as in some PDU session
In information, add an IMS voice instruction.
Optionally, in another example: step 21 further include:
Step 215, after the foundation of IMS voice, when switching across AMF, AMF be source AMF when, source AMF receive base
Stand send switching request；
Step 216, when the source AMF receive base station transmission switching request after, the source AMF selection target AMF,
And it is sent to the target AMF and generates context request (CreateUEContextRequest)；It is taken in the context request
With the context of UE.Wherein, the corresponding PDU session information of PDU session for having built up IMS voice includes IMS
Voice instruction.
When step 217, AMF are target AMF, target AMF receives the generation context request of source AMF transmission；
Step 218, after receiving the generations context request, target AMF is asked to SMF transmission PDU session updates
It asks；
Step 219, target AMF receive the PDU session updates request-reply that SMF is sent, wherein having built up IMS
It is indicated in the corresponding PDU session updates request-reply of the PDU session of voice comprising IMS voice.
It is described the invention also provides a kind of method for switching languages based on same as the previously described embodiments or similar design
Method includes:
Step 31, base station confirmation IMS voice need to be switched to circuit domain；
Switching request is sent to AMF by step 32, base station；It is carried in the switching request and is switched to circuit domain instruction
And corresponding PDU session indicates information, so that the AMF indicates that information is asked to corresponding SMF according to the PDU session
Seek session information.
Step 33, base station receive the Handover command that AMF is sent；
Step 34, base station send Handover command to user equipment (UE)；
It is described the invention also provides a kind of method for switching languages based on same as the previously described embodiments or similar design
Method includes:
Step 41, in the establishment process of IMS voice, SMF receive PCF send PCFPDU-CANsession
Modification, i.e. PDU session updates request；
Step 42, SMF send the request of PDU-CAN session modification session updates, above-mentioned session to AMF
It updates request and carries IMS voice instruction；So that AMF receive IMS voice instruction after, by the PDU
Session associates with IMS voice；
Optionally, the method for switching languages further include:
SMF receives the PDU session updates request that AMF is sent；
SMF sends the PDU session updates to the AMF and requests corresponding PDU session information；Above-mentioned PDU session information
Carry IMS voice instruction.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of method for switching languages, such as scheme
Shown in 3, which comprises
Step 300, terminal UE establishes PDU session in 5G system, and completes on the PDU session of foundation
IMS registration, and establish IMS voice conversation
Wherein, IMS voice conversation is the service quality stream for being exclusively used in voice.
Step 301, the base station 5G sends switching request to AMF；
Source 5G RAN node (base station 5G) discovery needs to be switched to another system, sends switching request to AMF,
In carry target cell information；
Step 302, AMF is to the corresponding session information of all related with UE SMF request target systems；
Wherein the quantity of related SMF may be one or more with UE, when there is multiple SMF, need to multiple SMF
The corresponding session information of request target system；
Step 303, AMF sends switching request to IWF；
Step 304, IWF initiates PS-to-CS switching request to eMSC
Step 305, eMSC reserves resource in goal systems
Wherein, resource reservation may be completed by the interaction of eMSC and Serving MSC.
Step 306, eMSC sends handoff response to IWF；
Step 307, eMSC initiates Session Hand-off (session transfer) to IMS network.
Wherein, step 306 and 307 is without specific sequencing.
Step 307a, IMS core is after the message about IMS network Session Hand-off for receiving eMSC transmission, IMS
Core updates distal end；
Step 308, for IWF after the handoff response for receiving eMSC transmission, IWF sends handoff response to AMF；
Step 3091, AMF sends Handover command and gives 5G RAN node；
Step 3092,5G RAN node sends Handover command to UE；
Step 310, UE access goal systems；
Step 311, eMSC notifies IWF, and switching is completed
Step 312, IWF notifies AMF that switching is completed
Step 313, UE is location updating (LAU, Location in goal systems after voice call
Update)；
However, above-mentioned process has many problems.Firstly, having multiple PDU session after UE access 5G system, each
The SMF of PDU session is different.Do not know that the IMS voier is to build after AMF receives switching request, in step 302
Which stand on PDU session, this requests handover information to which SMF.If switched to all SMF requests to electricity
The handover information in road domain: first, message wastes very much；Secondly, being generated if the SMF unrelated with IMS does not understand circuit domain instruction
Switch the handover information to 4G, then step 303 will generate mistake.
Secondly, when source system deletes user information (including login state, delete PDU session), if waited
During target side LAU, after UDM/HSS/HLR receives location updating, AMF deletion is reinformed, then since UE is telephone finished
Afterwards, location updating can be just done, this time is too late, and source resource is wasted too long.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of method for switching languages, such as scheme
Shown in 4, which comprises
Step 400, terminal UE has been set up PDU session in 5G system, completes on the PDU session
IMS registration, and establish IMS voice conversation (namely establishing the service quality stream for being exclusively used in voice)；
Step 401, source 5G RAN node discovery IMS voice needs to be switched to circuit domain, sends switching request to AMF,
In carry be switched to circuit domain instruction and corresponding PDU session instruction information；The PDU session instruction information is PDU meeting
Words mark；
Step 402, after AMF receives request, the corresponding SMF of Xiang Suoshu PDU session requests corresponding session information；
Step 403, AMF sends switching request to IWF；
Step 404, IWF initiates PS-to-CS switching request to eMSC
Above-mentioned steps 402~404 can there are many realize possibility.SMF return 5G session information or 4G session information or
Circuit domain session information.If what is returned is 5G or 4G session information, after AMF is transmitted to IWF, IWF needs to be converted into electricity
Road domain session information.If IWF realizes that in eMSC, step 404 is unwanted；If IWF realizes the step in AMF
403 be unwanted；If IWF realizes that step 403,404 are all needed in independent entity (such as in MME)；
Step 405, it (may be eMSC and Serving MSC interaction, in Target RNS that eMSC, which reserves resource in goal systems,
Or BSS completes resource reservation)
Step 406, eMSC sends handoff response to IWF
Step 407, eMSC initiates Session Hand-off (session transfer) to IMS network.(step 406 and 407 can
To be concurrent)
Step 407a, IMS core updates distal end；
Step 408, IWF sends handoff response to AMF；
It is similar with step 403,404, if if IWF realizes that in eMSC, step 406 is unwanted；If
IWF realizes that in AMF, step 408 is unwanted；If IWF is realized in independent entity (such as in MME), step
406,408 are all needed；
Step 409, AMF sends Handover command and gives 5G RAN node, and 5G RAN node sends Handover
Command is to UE；
Step 410, UE access goal systems；
Step 411, eMSC notifies IWF, and switching is completed
Step 412, IWF notifies AMF that switching is completed
Step 413, AMF initiates the 5G system logout process of UE.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of method for switching languages, such as scheme
Shown in 5, which comprises
Step 500: terminal UE has been set up PDU session in 5G system, completes on the PDU session
IMS registration starts IMS voice conversation；
Step 501:AF (P-CSCF) initiates Session Resources authorization requests to PCF；
Step 502:PCF initiates PDU-CAN session modification request to SMF, wherein containing QoS rule
Step 503:SMF sends session modification request to AMF, wherein N2 session request is contained, IMS voice instruction.
AMF associates the PDU session with IMS voice；
Step 504:AMF sends N2 session request to 5G RAN node, carries and requires 5G Qos information
Step 505:5G RAN node returns to N2 conversational response, which is forwarded by AMF, eventually arrives at SMF.
Step 506: completing IMS voice call establishment, existing procedure is not repeating during simplifying.
Step 507: 5G RAN node discovery IMS voice in source needs to be switched to circuit domain, sends switching request to AMF,
In carry be switched to circuit domain instruction；
Step 508, after AMF receives request, believe to SMF queued session corresponding with the associated PDU session of IMS voice
Breath；
Step 509: subsequent step repeats no more as step 403~414 in embodiment one (Fig. 4).
On the basis of embodiment shown in Fig. 5, the invention also provides a kind of method for switching languages, in Fig. 5, UE exists
During establishing IMS voice, IMS voice instruction is issued AMF by SMF.However, crossing Cheng Qian, UE 5G SRVCC occurs
It may also happen that across AMF switching of 5G internal system.Fig. 6 embodiment illustrates how that an IMS voice instruction switches across AMF
When pass to target AMF.As shown in Figure 6, which comprises
Step 600: terminal UE has been set up IMS voice session in 5G system.(step is equivalent to the step of Fig. 5
Rapid 500~506, source sAMF have received the IMS voice instruction of SMF)；
Step 601:5G RAN node sends switching request, and request is switched to another base station 5G；
Step 602: across the AMF switching of source sAMF discovery needs generation, sAMF selection target AMF (namely tAMF), and to
TAMF, which is sent, generates context request, wherein carrying the context of UE；In the request, sAMF can refer to IMS voice
Show with the incidence relation of PDU seesion, issue tAMF；
Step 603: purpose tAMF sends the request of PDU session updates to SMF；
Step 604:SMF returns to the 5G Qos information of the PDU session；The instruction of IMS voice can be carried in the information
Step 605: subsequent handoff procedure repeats no more.
Shown in embodiment as above, source sAMF can be in the context of UE, IMS voice instruction and PDU seesion
Incidence relation issue tAMF, such tAMF just has this incidence relation；Or SMF is returning to 5G Qos information to tAMF
In the process, the instruction of IMS voice is carried, IMS voice is indicated to associate with the PDU seesion by tAMF；
In Fig. 7 present invention, switch the embodiment four of initiation.In Fig. 5, UE is during establishing IMS voice, SMF
AMF is issued into IMS voice instruction.After all IMS voice conversation ends, sent before needing that AMF is notified to delete
Instruction.
Step 700: terminal UE has been set up IMS voice session in 5G system.(step is equivalent to the step of Fig. 5
Rapid 500~506, source sAMF have received the IMS voice instruction of SMF)；
Step 701: after all IMS voice conversation ends, the Qos flow of 5QI=1 can be deleted, SMF hair
PDU session updates are to AMF, wherein carrying the instruction for deleting IMS voice indication；
Step 702:AMF deletes the incidence relation of IMS voice instruction and the PDU seesion, and returning response；
In Fig. 8 present invention, the cancellation embodiment after the completion of switching
Step 801:AMF receives switching and completes instruction
Step 802:AMF sends PDU session release to the corresponding SMF of all PDU session of UE；
Step 803:SMF calls log off procedure to UDM/HSS/HLR；
Step 804:AMF discharges N2 connection to 5G rAN node；
When source system deletes user information (including login state, delete PDU session), if waiting targets
During the LAU of side, after UDM/HSS/HLR receives location updating, AMF deletion is reinformed, then after being telephone finished due to UE,
Location updating can be just done, this time is too late, and source resource is wasted too long.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of voice switching device, settings
On AMF, described device includes:
First receiving unit, first receiving unit are used to receive the switching request of base station transmission；The switching request
In carry be switched to circuit domain instruction；And it obtains PDU session and indicates information；
Information Request unit, for receive base station transmission switching request after, according to the PDU session
Indicate the corresponding SMF queued session information of information.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of voice switching device, settings
On base station, described device includes:
Switch confirmation unit, for confirming that IMS voice needs to be switched to circuit domain；
Switching request unit, for switching request to be sent to AMF；It is carried in the switching request and is switched to circuit
Domain instruction and corresponding PDU session indicate information, so that the AMF is to the corresponding SMF queued session of the PDU session
Information.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of voice switching device, settings
On SMF, described device includes:
Transmission unit, for sending Packet Data Unit PDU session to AMF in the establishment process of IMS voice
IMS voice instruction.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of terminal, including memory,
Processor and it is stored in the computer program that can be run on the memory and on the processor, which is characterized in that described
Processor realizes the processing of any method for switching languages provided in an embodiment of the present invention when executing the computer program.
Based on same as the previously described embodiments or similar design, the invention also provides a kind of computer-readable storage mediums
Matter, is stored thereon with computer program, and the computer program realizes provided in an embodiment of the present invention when being executed by processor
The processing of one method for switching languages.
It should be noted that embodiment described above be merely for convenience of it will be understood by those skilled in the art that, and
It is not used in and limits the scope of the invention, under the premise of not departing from inventive concept of the invention, those skilled in the art couple
Any obvious replacement and improvement that the present invention is made etc. are within the scope of the present invention.
Claims (16)
1. a kind of method for switching languages, which comprises
Access receives the switching request that base station is sent with mobility control function AMF；It carries and is switched in the switching request
Circuit domain instruction；
AMF obtains Packet Data Unit PDU session and indicates information；
After the switching request for receiving base station transmission, AMF indicates information according to the PDU session, to corresponding session control
Face function SMF queued session information processed.
2. method for switching languages according to claim 1, which is characterized in that the AMF obtains PDU session and indicates packet
It includes:
The circuit domain that is switched to also is carried in the received switching request of AMF indicates corresponding PDU session instruction information.
3. method for switching languages according to claim 2, which is characterized in that the PDU session instruction information is PDU session
Mark.
4. method for switching languages according to claim 1, which is characterized in that the PDU session instruction information is the PDU
The IMS voice of session is indicated；
The AMF obtains PDU session instruction information
In the establishment process of IMS voice, AMF receives the IMS voice instruction for the PDU session that SMF is sent.
5. method for switching languages according to claim 4, which is characterized in that
The AMF obtains PDU session and indicates information further include:
When switching across AMF, when AMF is source AMF, after the source AMF receives the switching request of base station transmission, the source
AMF selection target AMF, and sent to the target AMF and generate context request；UE is carried in the generation context request
Context；Wherein, the corresponding PDU session information of PDU session for having built up IMS voice includes that IMS voice refers to
Show.
6. method for switching languages according to claim 4, which is characterized in that
When switching across AMF, when AMF is target AMF, target AMF receives the generation context request that source AMF is sent；
After receiving the generation context request, target AMF sends the request of PDU session updates to SMF；
Target AMF receives the PDU session updates request-reply that SMF is sent, wherein having built up the PDU of IMS voice
It is indicated in the corresponding PDU session updates request-reply of session comprising IMS voice.
7. a kind of method for switching languages, which comprises
Base station confirmation IMS voice needs to be switched to circuit domain；
Switching request is sent to AMF by base station；It is carried in the switching request and is switched to circuit domain instruction and corresponding point
Group data cell PDU session indicates information, so that the AMF indicates information to corresponding session control according to the PDU session
Face function SMF queued session information processed.
8. method for switching languages according to claim 7, which is characterized in that the PDU session instruction information is PDU session
Mark.
9. a kind of method for switching languages, which comprises
In the establishment process of IMS voice, session control face function SMF sends with mobility control function AMF to access and is grouped
Data cell PDU session indicates information.
10. method for switching languages according to claim 9, which is characterized in that the method also includes:
When switching across AMF, SMF receives the PDU session updates request that AMF is sent；
SMF sends the PDU session updates request response to the AMF, wherein having built up the PDU session of IMS voice more
Information is indicated comprising PDU session in new request-reply.
11. method for switching languages according to claim 9 or 10, which is characterized in that
The PDU session instruction information is that the IMS voice of PDU session is indicated.
12. a kind of voice switching device, setting is in access and mobility control function AMF, which is characterized in that described device packet
It includes:
First receiving unit, first receiving unit are used to receive the switching request of base station transmission；It is taken in the switching request
It is indicated with circuit domain is switched to；And it obtains Packet Data Unit PDU session and indicates information；
Information Request unit, for indicating to believe according to the PDU session after the switching request for receiving base station transmission
Breath, to corresponding session control face function SMF queued session information.
13. a kind of voice switching device, it is arranged on base station, which is characterized in that described device includes:
Switch confirmation unit, for confirming that IMS voice needs to be switched to circuit domain；
Switching request unit, for switching request to be sent to AMF；It is carried in the switching request and is switched to circuit domain instruction
And corresponding PDU session indicates information, so that the AMF indicates information to corresponding session control according to the PDU session
Face function SMF queued session information processed.
14. a kind of voice switching device, it is arranged on the function SMF of session control face, which is characterized in that described device includes:
Transmission unit, for sending packet count to access and mobility control function AMF in the establishment process of IMS voice
It is indicated according to the IMS voice of unit PDU session.
15. a kind of terminal, including memory, processor and it is stored on the memory and can runs on the processor
Computer program, which is characterized in that the processor is realized when executing the computer program as any in claim 1 to 11
The processing of method described in claim.
16. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The processing of the method as described in claim any in claim 1 to 11 is realized when being executed by processor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307365.7A CN110366213A (en) | 2018-04-08 | 2018-04-08 | A kind of method for switching languages and device and terminal |
| PCT/CN2019/081722 WO2019196785A1 (en) | 2018-04-08 | 2019-04-08 | Voice handover method and device, terminal and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110831257A (en) * | 2018-08-08 | 2020-02-21 | 中国移动通信有限公司研究院 | Method, terminal and base station for initiating voice service |
| CN110944367A (en) * | 2019-12-20 | 2020-03-31 | 广东工业大学 | 4G and 5G interoperation method |
| CN112911656A (en) * | 2019-12-04 | 2021-06-04 | 中国电信股份有限公司 | Service concurrency method, device, system and storage medium |
| WO2021164119A1 (en) * | 2020-02-17 | 2021-08-26 | Oppo广东移动通信有限公司 | Method and apparatus for changing data transmission mode, device, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112702802A (en) * | 2019-10-22 | 2021-04-23 | 中兴通讯股份有限公司 | New air interface bearing voice service user identification method and base station |
| CN111132214A (en) * | 2019-12-18 | 2020-05-08 | 东莞宇龙通信科技有限公司 | Voice call method, device, electronic equipment and medium |
| CN114258102B (en) * | 2020-09-25 | 2024-07-23 | 维沃移动通信有限公司 | Method, device, terminal equipment and network equipment for transmitting service data |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018542A (en) * | 2017-03-27 | 2017-08-04 | 中兴通讯股份有限公司 | The processing method of status information, device and storage medium in network system |
| CN107580324B (en) * | 2017-09-22 | 2020-05-08 | 中国电子科技集团公司第三十研究所 | Method for protecting IMSI privacy of mobile communication system |
-
2018
- 2018-04-08 CN CN201810307365.7A patent/CN110366213A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110831257A (en) * | 2018-08-08 | 2020-02-21 | 中国移动通信有限公司研究院 | Method, terminal and base station for initiating voice service |
| CN110831257B (en) * | 2018-08-08 | 2021-09-10 | 中国移动通信有限公司研究院 | Method, terminal and base station for initiating voice service |
| CN112911656A (en) * | 2019-12-04 | 2021-06-04 | 中国电信股份有限公司 | Service concurrency method, device, system and storage medium |
| CN110944367A (en) * | 2019-12-20 | 2020-03-31 | 广东工业大学 | 4G and 5G interoperation method |
| WO2021164119A1 (en) * | 2020-02-17 | 2021-08-26 | Oppo广东移动通信有限公司 | Method and apparatus for changing data transmission mode, device, and storage medium |
| WO2021163853A1 (en) * | 2020-02-17 | 2021-08-26 | Oppo广东移动通信有限公司 | Data transmission mode changing method and apparatus, and device and storage medium |
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| WO2019196785A1 (en) | 2019-10-17 |
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