CN102131263B - The method, system and device of ringing-state territory switching - Google Patents
The method, system and device of ringing-state territory switching Download PDFInfo
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- CN102131263B CN102131263B CN201110076436.5A CN201110076436A CN102131263B CN 102131263 B CN102131263 B CN 102131263B CN 201110076436 A CN201110076436 A CN 201110076436A CN 102131263 B CN102131263 B CN 102131263B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
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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
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
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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
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1095—Inter-network session transfer or sharing
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Abstract
The invention discloses the method, system and device of a kind of ringing-state territory switching, said method includes: in the handoff procedure of ringing-state territory, moving exchanging center MSC and far-end carry out after media resource consults successfully, and injection frequency voice business continuity application server SCC AS actively sends called off-hook response message to far-end；Far-end receives this called off-hook response message, determines that territory handover operation completes.The technical scheme provided by the present invention, is solved ringing-state territory switch step in prior art more, it is achieved complex problem, decreases required step, reduce and realize difficulty.
Description
Technical field
The present invention relates to the communications field, in particular to the method, system and device of a kind of ringing-state territory switching.
Background technology
IMS (IPMultimediaSubsystem, internet protocol multimedia subsystem) is the developing direction of Future Multimedia communication, is also the of paramount importance ingredient of next generation network.It is 3GPP (ThirdGenerationPartnershipProject, third generation partner program) subsystem of support IP multimedia service that proposes, it is noteworthy characterized by and have employed SIP (SessionInitialProtocol, session initiation protocol) system, communicate unrelated with access way, can possess multiple multimedia service control function separate with bearing capacity, call separate with session, apply separate with service, business separates with network, and the multi abilities such as mobile network and internet service fusion.
SRVCC (SingleRadioVoiceCallContinuity, injection frequency voice business continuity) wireless user can be realized in the environment of SingleRadio (injection frequency), voice switching between IMS Yu CS (CircuitSwitched, circuit switching).UE (the UserEquipment of SRVCC correspondence SingleRadio, subscriber equipment), it is can only be at Radio (radio frequency), the LTE (LongTermEvolution of use of same time 2G/3G, long evolving system) Radio UE in one, the demand of SingleRadio is that manufacturer terminal proposes, and its objective is multiplexing 2G/3G, the radio frequency of LTE network and interlock circuit.
3GPP proposes the SRVCC ringing-state switching called pattern normal process method when PS (PacketSwitched, packet switch) territory response, the method essentially providing the switching of a kind of ringing-state territory.I.e. MSC (MobileSwitchingCenter, mobile switching centre) replace UE to initiate the request operation of ringing-state territory switching, SCCAS (i.e. SRVCCAS, SingleRadioVoiceCallContinuityApplicationServer, injection frequency voice business continuity application server) when receiving handover operation request of this territory, use UPDATE (renewal) message to remove renewal far-end；Now called subscriber is in the off-hook response of PS territory, and SCCAS is by this response message block；After territory switching media has been consulted, SCCAS sends INFO (notice) message informing MSC related session information, and carries switch mode；UE switches to CS territory, and send CSConnect (i.e. UE is in the off-hook response message in CS territory) notice MSC user's off-hook, MSC then sends the INFO notice SCCAS of band response mark, SCCAS judges called off-hook response, then send 200OK message (a kind of sip message event, for notifying the called off-hook response of caller) give caller, complete handoff procedure.Whole process steps is more, it is achieved complex.
Summary of the invention
Present invention is primarily targeted at the method, system and device that the switching of a kind of ringing-state territory is provided, to solve the problems referred to above.
According to an aspect of the present invention, the method providing the switching of a kind of ringing-state territory, including: in the handoff procedure of ringing-state territory, moving exchanging center MSC and far-end carry out after media resource consults successfully, and injection frequency voice business continuity application server SCCAS actively sends called off-hook response message to far-end；Far-end receives this called off-hook response message, determines that territory handover operation completes.
According to a further aspect in the invention, provide the system of a kind of ringing-state territory switching, including: moving exchanging center MSC, injection frequency voice business continuity application server SCCAS, local terminal, far-end, wherein, above-mentioned SCCAS includes: actively responder module, this actively responder module, for determining that MSC and far-end carry out after media resource consults successfully, active is to the far-end called off-hook response message of transmission；Said distal ends, is used for receiving this called off-hook response message, determines that territory handover operation completes.
According to another aspect of the invention, provide the device of a kind of ringing-state territory switching, it is arranged on injection frequency voice business continuity application server SCCAS, including: actively responder module, for determining that MSC and far-end carry out after media resource consults successfully, actively sending called off-hook response message to far-end, territory handover operation completes to make far-end determine.
Pass through the present invention, use and carry out after media resource consults successfully at MSC and far-end, SCCAS actively sends the response message of called off-hook response message to far-end, complete the scheme of territory handover operation, solve ringing-state territory switch step in prior art more, realize complex problem, decrease required step, reduce and realize difficulty.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the method for ringing-state territory switching according to embodiments of the present invention；
Fig. 2 is the flow chart of the method for ringing-state territory switching according to the preferred embodiment of the invention；
Fig. 3 is the flow chart schematic diagram of the method for the ringing-state territory switching according to present example；
Fig. 4 is the structured flowchart of the system of ringing-state territory switching according to embodiments of the present invention；
Fig. 5 is the structured flowchart of the system of ringing-state territory switching according to the preferred embodiment of the invention；
Fig. 6 is the structured flowchart of the device of ringing-state territory switching according to embodiments of the present invention；
Fig. 7 is the structured flowchart of the device of ringing-state territory switching according to the preferred embodiment of the invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Fig. 1 is the flow chart of the method for ringing-state territory switching according to embodiments of the present invention.As it is shown in figure 1, the method for ringing-state territory switching according to embodiments of the present invention includes:
Step S102, in the handoff procedure of ringing-state territory, MSC and far-end carry out after media resource consults successfully, and SCCAS actively sends called off-hook response message to far-end (i.e. call-originating end)；
Step S104, far-end receives this called off-hook response message, determines that territory handover operation completes.
In the ringing-state territory handoff procedure that 3GPP proposes, have sent twice called off-hook response message (i.e. for notifying the message of far-end called end off-hook response, or directly it is referred to as off-hook response message), it is for the first time the off-hook response message that sends at PS territory off-hook of local terminal (i.e. called end), also needs to local terminal afterwards and be switched to CS territory and retransmit a CSConnect called off-hook response message.Due to the most called off-hook response, see for local terminal is then that the territory after stable state switches (the territory switching of conversation state), during so now called end is switched to CS territory, it is not necessary to again send called off-hook response message.Pass through said method, SCCAS is utilized to have learned that called off-hook this condition of response when sending second time off-hook response message, whole flow process is controlled by SCCAS, carry out after media resource consults successfully at MSC and far-end, actively send called off-hook response message to far-end, to complete handoff procedure.Thus eliminate the necessity sending second time off-hook response message, decrease the step needed for whole handoff procedure, make switching implement the easiest.
Preferably, as in figure 2 it is shown, the method for ringing-state territory switching according to the preferred embodiment of the invention can further include:
Step S202, MSC replaces local terminal initiated domain handover request；
Step S204, SCCAS receives this territory handover request, association local terminal and far-end；
Step S206, SCCAS sends UPDATE message and updates far-end；
Step S208, when SCCAS receives called off-hook response message, by this called off-hook response message block.
Above-mentioned steps is the initial step in whole handoff procedure, when i.e. initial session is set up and is in ringing-state, and the success of calling and called resource negotiation；Now, wireless access fade out, MSC replaces the request of local terminal initiated domain handover operation；SCCAS receives territory handover request, association local terminal and far-end；SCCAS sends UPDATE message and goes to update far-end (media renewal)；Now, called subscriber is in the off-hook response of PS territory；SCCAS receives called subscriber when the message of PS territory off-hook response, then by this called off-hook response message block.Step S210 after step S208 is equivalent to above-mentioned step S102, and step S212 is equivalent to above-mentioned step S104.
Preferably, as in figure 2 it is shown, can further include after step sl 12:
Step S214, SCCAS discharges the calling formerly set up.
Corresponding with above-mentioned steps, after territory handover operation completes, SCCAS have called on PS Yu Na road before just can discharging service-user, to guarantee that resource is not wasted.
Preferably, above-mentioned called off-hook response message may include that the 200OK message of off-hook response.
200OK message is used to represent called subscriber's off-hook response, it is achieved to get up the simplest, convenient.
Below in conjunction with example and accompanying drawing 3, above preferred embodiment is described in detail.
Fig. 3 is the flow chart schematic diagram of the method for the ringing-state territory switching according to present example.As it is shown on figure 3, comprise the following steps according to the method for the ringing-state territory switching of present example:
Step S302, UE_B carries caller SDP (Sessiondescriptionprotocol, Session Description Protocol) and initiates a call to SRVCC user UE_A in the ps domain, and UE_A has anchored to SCCAS；UE_A replys the ALERTING message (180 message) with called SDP；Two ends resource has been consulted successfully, and this session is in ringing condition；UE_A reports wireless access signal to E-UTRAN (EvolvedUniversalMobileTelecommunicationsSystemTerrestria lAccess, the UMTS land radio access web of evolution), E-UTRAN triggers SRVCChandover (switching) to CS territory according to wireless access signal deciding；MSC carries STR-SR (SessionTransferNumber-SingleRadio, session Handover Number) and initiates session handover operation；UE_A is constantly in ringing condition；
Step S304, MSC initiates initial INVITE (invitation) session handover request, and carry Request-URI (Request-UniformResourceIdentifier, the universal resource identifier required) it is STR-SR, the SDP that MGW (MediaGateway, WMG) supports；
Step S306, IMCN (IPMultimediaCoreNetwork, IP multimedia core network) forwards the INVITE of session switching to ask to SCCAS；
Step S308, local terminal is associated by SCCAS with far-end, and because during calling and called ringing condition before, initial resource has consulted, therefore SCCAS prepares the renewal to far-end and operates；SCCAS sends UPDATE message and goes to update far-end；This section of media SDP represents that resource can be used；
Step S310, IMCN forwards this UPDATE message to terminal UE _ B；
Step S312, in handoff procedure, called subscriber UE_A is in the off-hook response of PS territory；
Step S314, UE_A sends the 200OK message of off-hook response in PS territory；
Step S316, IMCN forwarding 200OK message to SCCAS；When SCCAS receives 200OK message, it is judged that carrying out territory switching, then intercept this 200OK message；
Step S318, UE_B replys 200OK (UPDATE), and carried terminal media capability；
Step S320, IMCN forwards 200OK to SCCAS；
Step S322, SCCAS sends 183 message (response message of INVITE) of tape terminal media capability；
Step S324, IMCN forwards 183 message to MSC；
Step S326, MSC replys Prack (Temporary Response message)；
Step S328, IMCN forwards Prack to SCCAS；
Step S330, SCCAS replys the 200OK of Prack；
Step S332, IMCN forwards 200OK to MSC；
Step S334, SCCAS sends INFO request, including session related information, carries SCC called switching mark, and state has been prepared for appropriate；
Step S336, IMCN forwards this INFO to MSC；MSC receives INFO, and according to message content, that judges to switch for called terminal ringing state territory；
Step S338, MSC replys the response message 200OK of INFO；
Step S340, IMCN forwards 200OK (INFO) message；
Step S342, when MSC receives the INFO carrying session related information, enters calling transmission state (Calldeliveredstate)；
Step S344, UE receives the handover that E-UTRAN sends；
Step S346, UE switches to CS territory；
Step S348, SCCAS judges that territory switching media is consulted successfully, and called off-hook response, then send the 200OK message of off-hook response；
Step S350, IMCN forwards this response message to calling subscribe UE_B；
Step S352, calling subscribe UE_B replys ACK (AcknowledgeCharacter confirms character)；
Step S354, IMCN forwards ACK to SCCAS；
Step S356, SCCAS sends 200OK (INVITE) response message, to inform MSC handover success；
Step S358, IMCN forwarding 200OK (INVITE) message to MSC；
Step S360, MSC replys ACK message；
Step S362, IMCN forwards ACK to SCCAS；
Step S364, SCCAS replys called subscriber's response message ACK at PS territory off-hook；
Step S366, IMCN forwards this ACK to UE (PS territory)；
Step S368, SCCAS discharges original called subscriber and calls on PS Yu Na road.
Fig. 4 is the structured flowchart of the system of ringing-state territory switching according to embodiments of the present invention.As described in Figure 4, the system of ringing-state territory switching according to embodiments of the present invention includes: MSC, SCCAS, local terminal (called end), far-end (call-originating end), wherein:
Above-mentioned SCCAS includes: actively responder module 42, is connected to said distal ends, and for determining that MSC and far-end carry out after media resource consults successfully, active is to the far-end called off-hook response message of transmission；
Said distal ends, is used for receiving above-mentioned called off-hook response message, determines that territory handover operation completes.
Said system, SCCAS is make use of to have learned that called off-hook this condition of response when sending second time off-hook response message, carry out after media resource consults successfully at MSC and far-end, actively called off-hook response message is sent to far-end, to complete handoff procedure by the active responder module 42 of SCCAS.From without retransmiting second time off-hook response message, decrease the step needed for whole handoff procedure, it is achieved get up the easiest.
Preferably, above-mentioned MSC, it is used for replacing standby local terminal (i.e. called end) initiated domain handover request；
As it is shown in figure 5, above-mentioned SCCAS can further include:
Related update module 44, is connected to above-mentioned MSC and far-end, is used for receiving above-mentioned territory handover request, association local terminal and far-end, sends and update information updating far-end；
Response blocking module 46, is connected to above-mentioned MSC and far-end, for when receiving called off-hook response message, by this called off-hook response message block.
In initial procedure in handoff procedure, initial session is set up when being in ringing-state, the success of calling and called resource negotiation；Now, wireless access fade out, MSC replaces the request of local terminal initiated domain handover operation；Related update module 44 in SCCAS receives territory handover request, association local terminal and far-end, and sends UPDATE message and go to update far-end；Now, called subscriber is in the off-hook response of PS territory；Response blocking module 46 receives called subscriber when the message of PS territory off-hook response, then by this called off-hook response message block.
Preferably, as it is shown in figure 5, above-mentioned SCCAS can further include:
Calling release module 48, is connected to said distal ends, for after territory handover operation completes, discharges the calling formerly set up.
After territory handover operation completes, calling release module 48 have called on PS Yu Na road, to guarantee that resource is not wasted before just can discharging service-user.
Preferably, above-mentioned called off-hook response message may include that the 200OK message of off-hook response.
200OK message is used to represent called subscriber's off-hook response, it is achieved to get up the simplest, convenient.
Fig. 6 is the structured flowchart of the device of ringing-state territory switching according to embodiments of the present invention.As shown in Figure 6, the device of ringing-state territory switching according to embodiments of the present invention includes:
Actively responder module 62, for determining that MSC and far-end carry out after media resource consults successfully, active is to the far-end called off-hook response message of transmission, and territory handover operation completes to make far-end determine.
By said apparatus, actively responder module 62 is determining that MSC and far-end carry out meeting after media resource is consulted successfully and actively send called off-hook response message to far-end, to complete handoff procedure.From without retransmiting second time off-hook response message, decrease the step needed for whole handoff procedure, it is achieved get up the easiest.
Preferably, as it is shown in fig. 7, according to embodiments of the present invention ringing-state territory switching device can further include:
Related update module 64, for receiving the territory handover request that MSC replaces local terminal to initiate, association local terminal and far-end, send and update information updating far-end；
Response blocking module 66, is connected with related update module 64 and active responder module 62, for when receiving called off-hook response message, by this called off-hook response message block；
Calling release module 68, is connected with active responder module 62, for after territory handover operation completes, discharges the calling formerly set up.
In whole handoff procedure, initial session is set up when being in ringing-state, the success of calling and called resource negotiation；Now, wireless access fade out, MSC replaces the request of local terminal initiated domain handover operation；Related update module 64 in SCCAS receives territory handover request, association local terminal and far-end, and sends UPDATE message and go to update far-end；Now, called subscriber is in the off-hook response of PS territory；Response blocking module 66 receives called subscriber when the message of PS territory off-hook response, then by this called off-hook response message block.After territory handover operation completes, calling release module 68 have called on PS Yu Na road, to guarantee that resource is not wasted before just can discharging service-user.
As can be seen from the above description, the technical scheme provided by the present invention, simplify the process of ringing-state territory switching, made whole handoff procedure the most reasonable, it is achieved be the quickest, convenient.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculating device, they can concentrate on single calculating device, or it is distributed on the network that multiple calculating device is formed, alternatively, they can realize with calculating the executable program code of device, thus, can be stored in storing in device and be performed by calculating device, and in some cases, can be to be different from the step shown or described by order execution herein, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. the method for a ringing-state territory switching, it is characterised in that including:
In the handoff procedure of ringing-state territory, moving exchanging center MSC and far-end carry out media resource and consult successfully, when switching to the aiming field to be switched, injection frequency voice business continuity application server SCCAS, after judging that described media resource is consulted successfully, actively sends called off-hook response message to far-end；Wherein, before actively send the step of called off-hook response message to far-end, forbidding performing following steps: user notifies MSC user's off-hook, described MSC sends the INFO of band response mark and notifies described SCCAS；
Described far-end receives described called off-hook response message, determines that territory handover operation completes.
Method the most according to claim 1, it is characterised in that at described SCCAS actively before far-end sends called off-hook response message, also include:
Described MSC replaces local terminal initiated domain handover request；
Described SCCAS receives described territory handover request, associates described local terminal and described far-end；
Described SCCAS sends and updates far-end described in information updating；
When described SCCAS receives called off-hook response message, by this called off-hook response message block.
Method the most according to claim 1, it is characterised in that receive described called off-hook response message at described far-end, after determining that territory handover operation completes, also include:
Described SCCAS discharges the calling formerly set up.
4. according to the method described in any one of claims 1 to 3, it is characterised in that described called off-hook response message includes: the 200OK message of off-hook response.
5. a system for ringing-state territory switching, including: moving exchanging center MSC, injection frequency voice business continuity application server SCCAS, local terminal, far-end, it is characterised in that
Described SCCAS includes: actively responder module, and wherein, described active responder module, for determining that described MSC and described far-end carry out after media resource consults successfully, active is to the described far-end called off-hook response message of transmission；
Described far-end, is used for receiving described called off-hook response message, determines that territory handover operation completes；
When switching to the aiming field to be switched, described system forbids performing following steps: user notifies MSC user's off-hook, and described MSC sends the INFO of band response mark and notifies described SCCAS.
System the most according to claim 5, it is characterised in that
Described MSC, is used for replacing described local terminal initiated domain handover request；
Described SCCAS also includes:
Related update module, is used for receiving described territory handover request, associates described local terminal and described far-end, sends and updates far-end described in information updating；
Response blocking module, for when receiving called off-hook response message, by this called off-hook response message block.
System the most according to claim 5, it is characterised in that described SCCAS also includes:
Calling release module, for after territory handover operation completes, discharges the calling formerly set up.
8. according to the system described in any one of claim 5 to 7, it is characterised in that described called off-hook response message includes: off-hook response 200OK message.
9. a device for ringing-state territory switching, is arranged on injection frequency voice business continuity application server SCCAS, it is characterised in that including:
Actively responder module, for determining that moving exchanging center MSC and far-end carry out after media resource consults successfully, active is to the described far-end called off-hook response message of transmission, and territory handover operation completes to make described far-end determine；
When switching to the aiming field to be switched, described device forbids performing following steps: user notifies described MSC user off-hook, and described MSC sends the INFO of band response mark and notifies described SCCAS.
Device the most according to claim 9, it is characterised in that also include:
Related update module, for receiving the territory handover request that moving exchanging center MSC replaces user equipment (UE) to initiate, associates described UE and far-end, sends and update far-end described in information updating；
Response blocking module, for when receiving called off-hook response message, by this called off-hook response message block；
Calling release module, for after territory handover operation completes, discharges the calling formerly set up.
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| CN201110076436.5A CN102131263B (en) | 2011-03-29 | 2011-03-29 | The method, system and device of ringing-state territory switching |
| PCT/CN2012/070553 WO2012129979A1 (en) | 2011-03-29 | 2012-01-18 | Method, system, and device for ring state domain switchover |
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| CN201110076436.5A CN102131263B (en) | 2011-03-29 | 2011-03-29 | The method, system and device of ringing-state territory switching |
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| CN106993318A (en) * | 2016-01-20 | 2017-07-28 | 中兴通讯股份有限公司 | The method that switches between network, device, eMSC and SCC AS |
| CN110995939B (en) * | 2019-12-20 | 2021-09-28 | 惠州Tcl移动通信有限公司 | Switching method and device of call network and storage medium |
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| CN101835223A (en) * | 2009-03-12 | 2010-09-15 | 中兴通讯股份有限公司 | Voice business continuity switching method |
| WO2010121890A1 (en) * | 2009-04-21 | 2010-10-28 | Alcatel Lucent | Reduction of flow break in sr-vcc mobility |
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| CN101835223A (en) * | 2009-03-12 | 2010-09-15 | 中兴通讯股份有限公司 | Voice business continuity switching method |
| WO2010121890A1 (en) * | 2009-04-21 | 2010-10-28 | Alcatel Lucent | Reduction of flow break in sr-vcc mobility |
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