CN101494648A - Medium transfer method between terminal equipment, and network equipment - Google Patents
Medium transfer method between terminal equipment, and network equipment Download PDFInfo
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- CN101494648A CN101494648A CNA2009100057121A CN200910005712A CN101494648A CN 101494648 A CN101494648 A CN 101494648A CN A2009100057121 A CNA2009100057121 A CN A2009100057121A CN 200910005712 A CN200910005712 A CN 200910005712A CN 101494648 A CN101494648 A CN 101494648A
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Abstract
The embodiment of the invention provides a media transfer method and network equipment between terminal units. The method includes: receiving the request transmitted by the media transfer request equipment through an IP-based multimedia subsystem IMS network side, to transmit part or all of the media in the multimedia session to the media transfer request message of the circuit switching domain media transfer target equipment; establishing a session for the circuit switching domain media transfer target equipment and the client device based on the media transfer request message to complete the transfer of media. Through the method of the embodiment of the invention, the terminal unit accessing in the IMS network through the circuit switching CS network can also receive multi-media session media transfer, so that the application range of the multimedia session media in the transfer between terminals is expanded, and the communication media processing mode becomes more, and the user experience is improved.
Description
Technical field
The present invention relates to IP-based multimedia service communication network IMS, relate in particular to a kind of medium transfer method between terminal equipment and the network equipment.
Background technology
IMS (IP Multimedia Subsystem) is based on IP (Internet Protocol, Internet protocol) multimedia service communication network, it is multiple medium and composite service thereof such as support voice, video, data, and realization multiple network, for example move and fixed network, PS (Packet Switch, packet switching) with CS (Circuit Switch, circuit switching) network etc., the core technology of the next-generation communication network of fusion.IMS network using IMS core network subsystem (IP Multimedia Core Network Subsystem) is carried out business control, and adopts the SIP signaling as call control signalling.Packet switching network PS or circuit-switched network CS be as access network, for signaling and media delivery provide carrying, thereby professional Control Network separated with bearer network, for the IP multimedia application provides unified and supporting platform flexibly.
In the IMS network, call conversation control function entity (CSCF:Call Session ControlFunction) provides the IMS conversation control function of core.CSCF can be divided into proxy call conversation control function entity P-CSCF, service call session control function entity S-CSCF and enquiry call conversation control function entity I-CSCF by its position and function.Application server (AS:Application Server) can be positioned at the user attaching net for IMS user provides IM value-added service, also can be provided by the third party.Carry out mutual and professional control between AS and the S-CSCF.
Fig. 1 is the basic framework schematic diagram of the IMS centralized traffic ICS of system, and it is that a kind of employing IMS core network subsystem is carried out service set control, circuit switching (CS) network and the packet switching PS network general purpose I MS network as access network (being bearer network).Wherein, service set and application server for continuity SCC AS (Service Centralization and Continuity Application Server) are the key function entities in the system, it carries out the ICS and the control of SC (IMS Service Continuity, IMS business continuance) service logic of core.
Fig. 2 is among the IMS conversation continuity SC of system (IMS Service Continuity), the example that the IMS conversation media shifts between different terminal equipment, and it adopts the identical framework with IMS centralized traffic system, as shown in Figure 1.When IMS user is mobile between different access networks, in order to ensure favorable user experience, require not interrupt current ongoing IMS session, promptly keep the continuity of IMS session.Similarly, when the user transfers to another terminal equipment with the part or all of medium of ongoing IMS session by a terminal equipment,, require conversation media stream in this transfer process, also to keep continuously, do not interrupt for favorable user experience is provided.As shown in Figure 2, UE-1 transfers to UE-3 with the voice medium in the IMS session of carrying out with UE-2, and video media is transferred to UE-4, carries out voice conversation by UE-3 and UE-2, and carries out video session by UE-4 and UE-2.
In realizing process of the present invention, the inventor finds that there are the following problems in the prior art:
The solution of the transfer of realization IMS conversation media between two terminal equipments that the application prior art provides, can realize the transfer of IMS conversation media between UE-1 and UE-2, but, the terminal equipment that receiving media shifts is the IMS terminal with SIP signalling capability, for can only but receiving by other terminal and shift the multimedia conversation media of coming by the terminal equipment of circuit switching (CS) network insertion.
Summary of the invention
The main purpose of the embodiment of the invention is how the terminal equipment that solves by the circuit switching (CS) network insertion receives the problem that multimedia conversation media shifts.
The above-mentioned purpose of the embodiment of the invention is achieved by the following technical solution:
A kind of medium transfer method between terminal equipment, described method comprises: the media transfer request message of circuit commutative field media transfer target device is arrived the part or all of media transfer in the Multimedia session in the request that receiving media transfer request equipment sends by IP-based multimedia subsystem, IMS network side; According to described media transfer request message, set up session for circuit commutative field media transfer target device and opposite equip., finish media transfer.
A kind of network equipment, the described network equipment comprises: IMS network side media transfer request receiving element is used for the media transfer request message that receiving media transfer request equipment arrives the part or all of media transfer of Multimedia session by the request of IP-based multimedia subsystem, IMS network side transmission circuit commutative field media transfer target device; Circuit commutative field media transfer performance element is used for according to described media transfer request message, sets up session for circuit commutative field media transfer target device and opposite equip., finishes media transfer.
Method by the embodiment of the invention, make terminal equipment can receive the multimedia conversation media transfer by circuit switching (CS) network insertion IMS network, enlarge multimedia conversation media in the range of application that terminal room shifts, made the communication medium processing mode more flexible, improved user experience.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is that IMS service set and conversation continuity system form structured flowchart;
Fig. 2 shifts schematic diagram for the IMS conversation media between different terminal equipment;
Fig. 3 is the method flow diagram of the embodiment of the invention;
Fig. 4 is the method flow diagram of another embodiment of the present invention;
Fig. 5 is method interaction diagrams embodiment illustrated in fig. 4;
Fig. 6 is the network equipment composition frame chart of the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is described in further details below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment one
The embodiment of the invention provides a kind of medium transfer method between terminal equipment, below in conjunction with accompanying drawing present embodiment is elaborated.
Fig. 3 is the method flow diagram of the embodiment of the invention, and as shown in Figure 3, the medium transfer method between terminal equipment of the embodiment of the invention comprises:
301: the media transfer request message of circuit commutative field media transfer target device is arrived the part or all of media transfer in the Multimedia session in the request that receiving media transfer request equipment sends by IP-based multimedia subsystem, IMS network side;
In the present embodiment, the media transfer request message can comprise: the behavior of request, and for example media transferring is to another terminal equipment; The media transfer target device; Media information to be transferred, for example dialogue of being associated of medium type, medium etc.
In the present embodiment, circuit commutative field media transfer target device is the terminal equipment that can only insert the IMS network by the CS of Circuit Switching Network, and further, it can not have SIP signalling function.
302: according to described media transfer request message, set up session, finish media transfer for circuit commutative field media transfer target device and opposite equip..
In the present embodiment,, determined media transfer target device and media information to be transferred, promptly can finish media transfer by the mode of setting up session for circuit commutative field media transfer target device and opposite equip. according to the media transfer request message.
The method of present embodiment can be applied to the MSC Server (Mobile-services SwitchingCentre Server, mobile services switching centre server) or other the network equipment, present embodiment not with this as restriction.
Method according to present embodiment, in media transfer requesting service and opposite equip. conversation procedure, when the media transfer requesting service will arrive circuit commutative field media transfer target device with the part of media in the session or whole media transfer, when carrying out corresponding session by circuit commutative field media transfer target device and opposite equip., can be by the said method of present embodiment, by setting up the mode of session, respective media is transferred to the media transfer target device for circuit commutative field media transfer target device and opposite equip..
Method by present embodiment, even if terminal equipment by circuit switching (CS) network insertion IMS network, also can receive multimedia conversation media shifts, enlarged the range of application that multimedia conversation media shifts at terminal room, make the communication medium processing mode more flexible, improved user experience.
Embodiment two
The embodiment of the invention also provides a kind of medium transfer method between terminal equipment, below in conjunction with accompanying drawing present embodiment is elaborated.
Fig. 4 is the method flow diagram of the embodiment of the invention, and as shown in Figure 4, the medium transfer method between terminal equipment of the embodiment of the invention comprises:
401: the media transfer request message of circuit commutative field media transfer target device is arrived the part or all of media transfer in the Multimedia session in the request that receiving media transfer request equipment sends by IP-based multimedia subsystem, IMS network side;
In the present embodiment, the media transfer request message can comprise: the behavior of request, and for example media transferring is to another terminal equipment; The media transfer target device; Media information to be transferred, for example dialogue of being associated of medium type, medium etc.
In the present embodiment, circuit commutative field media transfer target device is the terminal equipment that can only insert the IMS network by the CS of Circuit Switching Network, and further, it can not have SIP signalling function.
402: according to described media transfer request message, set up session, finish media transfer for circuit commutative field media transfer target device and opposite equip..
In the present embodiment,, determined media transfer target device and media information to be transferred, promptly can finish media transfer by the mode of setting up session for circuit commutative field media transfer target device and opposite equip. according to the media transfer request message.
In the present embodiment, this step 402 may further include:
4021: send the circuit domain session that comprises media information to be transferred to circuit commutative field media transfer target device and set up Setup message, indication media transfer target device is set up the session with opposite equip.;
Wherein, media information to be transferred is the part of media transfer request message, is meant the information of the medium that will transfer to the media transfer target device here.
4022: the circuit commutative field of the information of the medium that comprise affirmation that the receiving media equipment that diverts the aim sends connects sets up Connect message;
According to the method for present embodiment, when the media transfer target device has been accepted above-mentioned media transfer request, determine the media function of its support, and then the feedback information of the medium confirmed is returned according to media information to be transferred.At present embodiment, the information of the medium of this affirmation connects by circuit commutative field sets up message Connect transmission.
4023: send the Session initiation protocol SIP session to the IMS network side and set up request message, request is set up session with described opposite equip..
According to the method for present embodiment, after receiving connection message, can send the Session initiation protocol SIP session to the IMS network side and set up request message, the session with opposite equip. is set up in request, and then realizes media transfer.
In the present embodiment, for Setup message is set up in the session of response of step 4021, the media transfer target device can send calls out acknowledge message and ALERTING message, and therefore, the method for present embodiment also comprises:
The calling acknowledge message that the receiving media equipment that diverts the aim sends and the step of ALERTING message.
Same, for the media transfer request message that response of step 401 receives from the media transfer requesting service, the method for present embodiment also comprises:
Send the step that the media transfer request is accepted message by described IMS network side to described media transfer requesting service.
In the present embodiment, set up for the session of confirming media transfer target device and opposite equip., the method for present embodiment also comprises:
Success message is set up in the SIP session that receives the transmission of IMS network side, is accepted to confirm the session request of setting up;
Connect acknowledge message to described media transfer target device transtation mission circuit switching domain.
In the present embodiment, after finishing media transfer, the method for present embodiment also comprises:
Send media transfer by described IMS network to described media transfer requesting service and finish message;
Receive the affirmation message that described media transfer requesting service returns by described IMS network.
The method of present embodiment can be applied to the MSC Server (Mobile-services SwitchingCentre Server, mobile services switching centre server) or other the network equipment, present embodiment not with this as restriction.
Method according to present embodiment, in media transfer requesting service and opposite equip. conversation procedure, when the media transfer requesting service will arrive circuit commutative field media transfer target device with the part of media in the session or whole media transfer, when carrying out corresponding session by circuit commutative field media transfer target device and opposite equip., can be by the said method of present embodiment, by setting up the mode of session, respective media is transferred to circuit commutative field media transfer target device for circuit commutative field media transfer target device and opposite equip..
Method by present embodiment, even if terminal equipment by circuit switching (CS) network insertion IMS network, also can receive multimedia conversation media shifts, enlarged the range of application that multimedia conversation media shifts at terminal room, make the communication medium processing mode more flexible, improved user experience.
Embodiment three
The embodiment of the invention also provides a kind of medium transfer method between terminal equipment, below in conjunction with accompanying drawing present embodiment is elaborated.
Fig. 5 finishes by UE-1 and initiates media transfer to UE-2 for the method for the MSC Server application embodiment of the invention, sets up request by UE-2 to SCC AS initiation session again, to finish the flow chart of media transfer.
In the present embodiment, UE-1 is as the media transfer requesting service of present embodiment, and it is the IMS terminal with ISP signalling capability; UE-2 is as the media transfer target device of present embodiment, its terminal equipment for not having the ICS function, i.e. and Non ICS UE, its MSC Server has the ICS professional ability of enhancing.Please refer to Fig. 5, the flow process of using the method for present embodiment comprises:
501:UE-1 and far-end UE set up a Multimedia session.
502: user's decision is arrived UE-2 with the one or more media transfer in the UE-1 session.
503:UE-1 sends the media transfer request message to S-CSCF, and for example REFER message asks to shift above-mentioned one or more medium to UE-2.
Wherein, above-mentioned media transfer request message has comprised following message: the behavior of request, and for example media transferring is to another equipment; Media transfer target device, for example UE-2; Media information to be transferred, for example dialogue of being associated of medium type, medium etc.Illustrate as follows:
REFER(UE-2number)
Via：SIP/2.0/UDP?referrer.example；branch＝z9hG4bK392039842
To：(UE-2number)
From：(UE-1number)
Call-ID：(session?ID?beween?UE-1and?the?remote?UE)
...
Refer-To：(remote?UE?number)
Referred-By：(UE-1number)；cid＝X(Content?ID?of?the?transferring?sessioninfo)
Content-Type：multipart/mixed；boundary＝my-boundary-9
Content-Length：(appropriate?value)
...
--my-boundary-9
Content-Type：multipart/signed；…
Content-ID：X(Content?ID?of?the?transferring?session?info)
...
Content-Type：message/sipfrag
...
Date：(Media?transferring?time，from?the?REFER?request)
Refer-To：(Remote?UE?number)
Referred-By：(UE-1number)；cid＝X(Content?ID?ofthe?transferring?sessioninfo)
...
--my-boundary-9
Content-Type：application/sdp
Content-Length：(appropriate?value)
v＝0
o＝(username?of?UE-2)(sess-id)(sess-version)(nettype)(addrtype)(addressof?UE-2)
m＝audio?49172RTP/AVP?0(info?of?the?transferred?media)
a＝rtpmap：0PCMU/8000
--my-boundary-9--
504:S-CSCF sends REFER message to MSC Server, and request is arrived UE-2 with the one or more media transfer in the ongoing session of UE-1.
After 505:MSC Server receives REFER message, message is set up in session to UE-2 transtation mission circuit exchange CS territory, for example Setup message asks UE-2 and opposite end UE to set up session, and the media information to be transferred that comprises in the message in the above-mentioned media transfer request message is set up in this session.
506:UE-2 receives after above-mentioned session sets up message, if accept the media transfer request, then sends to MSC Server and calls out acknowledge message, Call Confirmed message for example, and ALERTING message, for example Alerting message is confirmed to receive and is called out and initiated ring.
507-508:MSC Server sends 202Accepted message by S-CSCF to UE-1, shows that UE-2 accepts this media transfer request.
509: if UE-2 has accepted above-mentioned media transfer request, then the media information to be transferred in the message is set up in the session that receives according to step 505, check the medium type of oneself supporting, determine the information of the medium of affirmation, set up message to MSC Server transtation mission circuit exchange CS territory connection, Connect message for example, the session with opposite equip. is set up in request, wherein carries the media information of affirmation.
After 5010:MSC Server receives Connect message, send the Session initiation protocol SIP session to SCC AS and set up request message, for example INVITE asks to set up session with opposite equip..Illustrate as follows:
INVITE(Remote?UE?number)
...
To：(Remote?UE?number)
From：(UE-2number)
Call-ID：(call?ID?for?the?call?being?established?between?UE-2and?the?remoteUE)
Referred-By：(UE-1number)；cid＝X(Content?ID?of?the?transferring?sessioninfo)
Content-Type：multipart/mixed；boundary＝my-boundary-9
Content-Length：(appropriate?value)
--my-boundary-9
Content-Type：application/sdp
Content-Length：(appropriate?value)
v＝0
o＝(username?of?UE-2)(sess-id)(sess-version)(nettype)(addrtype)(addressofUE-2)
...
m＝audio?49172RTP/AVP?0(info?of?the?transferred?media)
a＝rtpmap：0PCMU/8000
--my-boundary-9
Content-Type：multipart/signed；…
Content-ID：X(Content?ID?of?the?transferring?session?info，from?the?REFERrequest)
...
Content-Type：message/sipfrag
...
Date：(Media?transferring?time，from?the?REFER?request)
Refer-To：(Remote?UE?number)
Referred-By：(UE-1number)；cid＝X(Content?ID?of?the?transferring?sessioninfo)
...
--my-boundary-9--
5011:S-CSCF is transmitted to SCC AS with above-mentioned INVITE.
After 5012-5017:SCC AS receives INVITE, the session that request is set up is associated with original session, be about to new UE-2 session access tributary and be associated, send re-INVITE message, upgrade the far-end session branch to opposite equip. with the opposite end session branch.
5018:SCC AS sends 200OK message to S-CSCF, shows the session foundation request (step 5011) of accepting UE-2.
5019:S-CSCF transmits above-mentioned 200OK message to MSC Server.
5020:MSC Server sends to UE-2 and connects acknowledge message, and for example Connect Acknowledge message shows that the session between UE-2 and the opposite equip. is successfully set up.
5021-5022:MSC Server replys acknowledge message, for example ACK message to SCC AS.
5023-5024: if having only part of media to transfer to UE-2 in the UE-1 session, SCC AS sends re-INVITE message to UE-1, and indication UE-1 stops to send/receiving the medium that migrated out; If the whole medium in the UE-1 session have all been transferred to UE-2, SCC AS sends BYE message to UE-1, and indication UE-1 discharges session.
5025-5026:UE-1 receives re-INVITE or BYE message, correspondingly upgrades or discharge session, and sends 200OK message to SCC AS.
5027-5028: if SCC AS has sent re-INVITE message to UE-1 among the step 5023-5024, then SCC AS sends ACK message to UE-1, confirms the UE-1 session updates.
5029:MSC Server replaces UE-2 to finish message through S-CSCF to UE-1 transmission media transfer, and for example NOTIFY notifies the UE-1 media transfer to finish.
5030:UE-1 replys 200OK message through S-CSCF to MSC Server.
Method by present embodiment, UE-1 initiates media transfer request (without SCCAS) to UE-2, set up (media transfer) request by UE-2 to SCC AS initiation session again, thereby realize the part or all of media transfer in the ongoing Multimedia session of UE-1 to UE-2, make terminal equipment by circuit switching (CS) network insertion IMS network, also can receive multimedia conversation media shifts, enlarged the range of application that multimedia conversation media shifts at terminal room, make the communication medium processing mode more flexible, improved user experience.
Embodiment four
The embodiment of the invention also provides a kind of network equipment, is used to realize media transfer between terminal equipment, below in conjunction with accompanying drawing present embodiment is elaborated.
Fig. 6 is the network equipment composition frame chart of present embodiment, please refer to Fig. 6, and the network equipment of present embodiment mainly comprises:
IMS network side media transfer request receiving element 61 is used for the media transfer request message that receiving media transfer request equipment arrives the part or all of media transfer of Multimedia session by the request of IP-based multimedia subsystem, IMS network side transmission circuit commutative field media transfer target device;
Circuit commutative field media transfer performance element 62 is used for according to described media transfer request message, sets up session for circuit commutative field media transfer target device and opposite equip., finishes media transfer.
In the present embodiment, this circuit commutative field media transfer performance element 62 can comprise:
Connect and to set up message sink module 622, the circuit commutative field that is used for the information of the medium that comprise affirmation that the receiving media equipment that diverts the aim sends connects sets up message;
Request sending module 623 is set up in session, is used for sending the SIP session to the IMS network side and sets up request message, and request is set up session with described opposite equip..
In the present embodiment, this circuit commutative field media transfer performance element 62 can also comprise:
Successful message sink module 624 is set up in session, is used to receive the session request of setting up that the IMS network side sends and is accepted message;
Connect acknowledge message sending module 625, be used for connecting acknowledge message to described media transfer target device transtation mission circuit switching domain.
In the present embodiment, this circuit commutative field media transfer performance element 62 can also comprise:
Media transfer is finished message transmission module 626, is used for sending media transfer by described IMS network to described media transfer requesting service and finishes message;
Media transfer is finished acknowledge message receiver module 627, is used to receive the affirmation message that described media transfer requesting service returns by described IMS network.
The network equipment of present embodiment is used to finish the method for the foregoing description one, embodiment two and embodiment three, for the function of each part of the network equipment of present embodiment, has done detailed description in preceding method embodiment, does not repeat them here.
The network equipment by present embodiment, make terminal equipment by circuit switching (CS) network insertion IMS network, also can receive multimedia conversation media shifts, enlarged the range of application that multimedia conversation media shifts at terminal room, make the communication medium processing mode more flexible, improved user experience.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a medium transfer method between terminal equipment is characterized in that, described method comprises:
The media transfer request message of circuit commutative field media transfer target device is arrived the part or all of media transfer in the Multimedia session in the request that receiving media transfer request equipment sends by IP-based multimedia subsystem, IMS network side;
According to described media transfer request message, set up session for circuit commutative field media transfer target device and opposite equip., finish media transfer.
2. method according to claim 1 is characterized in that, and is described according to described media transfer request message, sets up session for circuit commutative field media transfer target device and opposite equip. and comprises:
Send the circuit commutative field session that comprises media information to be transferred to described media transfer target device and set up message, indicate the session of described media transfer target device foundation and opposite equip.;
The circuit commutative field of the media information that comprises affirmation that the receiving media equipment that diverts the aim sends connects sets up message;
Send the Session initiation protocol SIP session to the IMS network side and set up request message, request is set up session with described opposite equip..
3. method according to claim 2 is characterized in that, describedly sends session to the IMS network side and also comprises after setting up request message:
Success message is set up in the SIP session that receives the transmission of IMS network side;
Connect acknowledge message to described media transfer target device transtation mission circuit switching domain.
4. method according to claim 3 is characterized in that, and is described according to described media transfer request message, for circuit commutative field media transfer target device and opposite equip. also comprise after setting up session:
Send media transfer by described IMS network to described media transfer requesting service and finish message;
Receive the affirmation message that described media transfer requesting service returns by described IMS network.
5. according to each described method of claim 1-4, it is characterized in that described media transfer target device is the terminal equipment that inserts the IMS network by circuit-switched network.
6. a network equipment is characterized in that, the described network equipment comprises:
IMS network side media transfer request receiving element is used for the media transfer request message that receiving media transfer request equipment arrives the part or all of media transfer of Multimedia session by the request of IP-based multimedia subsystem, IMS network side transmission circuit commutative field media transfer target device;
Circuit commutative field media transfer performance element is used for according to described media transfer request message, sets up session for circuit commutative field media transfer target device and opposite equip., finishes media transfer.
7. the network equipment according to claim 6 is characterized in that, described circuit commutative field media transfer performance element comprises:
Message transmission module is set up in session, is used for sending the circuit commutative field session that comprises media information to be transferred to described circuit commutative field media transfer target device and sets up Setup message, and indication media transfer target device is set up the session with opposite equip.;
Connect and to set up the message sink module, the circuit commutative field that is used to receive the media information that comprises affirmation that described media transfer target device sends connects sets up Connect message;
Request sending module is set up in session, is used for sending the SIP session to the IMS network side and sets up request message, and request is set up session with described opposite equip..
8. the network equipment according to claim 7 is characterized in that, described circuit commutative field media transfer performance element also comprises:
Successful message sink module is set up in session, is used to receive the session request of setting up that the IMS network side sends and is accepted message;
Connect the acknowledge message sending module, be used for connecting acknowledge message to described media transfer target device transtation mission circuit switching domain.
9. the network equipment according to claim 8 is characterized in that, described circuit commutative field media transfer performance element also comprises:
Media transfer is finished message transmission module, is used for sending media transfer by described IMS network to described media transfer requesting service and finishes message;
Media transfer is finished the acknowledge message receiver module, is used to receive the affirmation message that described media transfer requesting service returns by described IMS network.
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| CN102158466A (en) * | 2010-02-11 | 2011-08-17 | 华为终端有限公司 | Media transfer method among user equipment (UE) and application server (AS) |
| CN101997697B (en) * | 2009-08-12 | 2012-06-20 | 华为终端有限公司 | Service control method and device for interface I1 |
| CN102598642A (en) * | 2009-11-04 | 2012-07-18 | 日本电气株式会社 | Gateway apparatus, mobile terminal, mobile communication method and program |
| CN103428206A (en) * | 2013-07-30 | 2013-12-04 | 中国联合网络通信集团有限公司 | Loading path establishing method, device and system |
| CN105530452A (en) * | 2014-10-24 | 2016-04-27 | 三亚中兴软件有限责任公司 | Processing method and device of conference terminal call forwarding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7359373B2 (en) * | 2003-10-17 | 2008-04-15 | Nokia Corporation | System, apparatus, and method for establishing circuit-switched communications via packet-switched network signaling |
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| CN102598642A (en) * | 2009-11-04 | 2012-07-18 | 日本电气株式会社 | Gateway apparatus, mobile terminal, mobile communication method and program |
| CN102158466A (en) * | 2010-02-11 | 2011-08-17 | 华为终端有限公司 | Media transfer method among user equipment (UE) and application server (AS) |
| WO2011097982A1 (en) * | 2010-02-11 | 2011-08-18 | 华为终端有限公司 | Method for inter-ue media transfer and application server thereof |
| CN102158466B (en) * | 2010-02-11 | 2013-10-09 | 华为终端有限公司 | Media transfer method among user equipment (UE) and application server (AS) |
| US9531816B2 (en) | 2010-02-11 | 2016-12-27 | Huawei Device Co., Ltd. | Method and apparatus for media transfer between user equipment |
| CN103428206A (en) * | 2013-07-30 | 2013-12-04 | 中国联合网络通信集团有限公司 | Loading path establishing method, device and system |
| CN103428206B (en) * | 2013-07-30 | 2016-06-15 | 中国联合网络通信集团有限公司 | Carrying path establishment method, Apparatus and system |
| CN105530452A (en) * | 2014-10-24 | 2016-04-27 | 三亚中兴软件有限责任公司 | Processing method and device of conference terminal call forwarding |
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| CN101494648B (en) | 2012-01-25 |
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