CN101692722B - Method for calling multimedia session continuity service - Google Patents
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- CN101692722B CN101692722B CN 200810000368 CN200810000368A CN101692722B CN 101692722 B CN101692722 B CN 101692722B CN 200810000368 CN200810000368 CN 200810000368 CN 200810000368 A CN200810000368 A CN 200810000368A CN 101692722 B CN101692722 B CN 101692722B
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Abstract
The invention discloses a method for calling a multimedia session continuity service, which realizes calling in IMS domain multimedia session continuity and centralized control services. The method comprises that: a multimedia session continuity service MMSC subscriber initiates a multimedia call comprising circuit domain voice; in a packet switch domain, a number of a remote called terminal is taken as a called number and carries MMSC session information, and a media session except the voice is transmitted to an MMSC application server; in a circuit domain, the number of the MMSC application server is taken as the called number and carries voice session information, and the call is initiated to the MMSC application server through the voice session; and finally, the MMSC application server combines the voice session and an MMSC session into a session, and the number of the remote called terminal is taken as the called number to continue the calling. The method can ensure that the MMSC application server correctly finishes session combination so as to realize correct calling.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of implementation method of exhaling in IMS field multimedia conversation continuity and the centralized control business.
Background technology
IP (network interconnection agreement; Internet Protocol is called for short IP) IP multimedia subsystem, IMS (IPMultimedia Core Network Subsystem is called for short IMS) is by third generation partner program (3rd Generation Partnership Project; Abbreviation 3GPP) a kind of IP-based network framework that proposes; It has made up an opening and service environment flexibly, supports multimedia application, and abundant multimedia service is provided for the user.
IMS is based on the communication network framework of IP; Irrelevant with access technology; Except being GPRS (General Packet Radio Service; GPRS), WLAN packet access networks such as (Wireless LocalArea Network, WLANs) provides outside the business, can also be GSM (Global System for Mobile communications; Global system for mobile communications), UMTS mobile cellular networks such as (Universal Mobile Telecommunications System, unified mobile communcations systems) provides professional.
Mobile cellular network such as GSM, UMTS adopts circuit-switched technology, is called circuit (CircuitSwitched is called for short CS) territory, can basic speech business be provided for the user, and based on the supplementary service of speech business.When IMS was inserted in the CS territory, it developed into a kind of access way, and business provides by IMS is unified fully, and this technology is called IMS centralized traffic (IMS Centralized Service is called for short ICS).
(User Equipment UE) need keep the continuity of Multimedia session to user terminal under various access waies simultaneously.At this moment, the Multimedia session of user UE not only will keep continuity when switching between the packet-switched domain (Packet Switch is called for short PS), simultaneously in PS territory and CS territory, keep continuity in the switching in PS territory and PS territory+CS territory.Guarantee that this successional technology is called IMS multimedia conversation continuity (Multimedia Session Continuity is called for short MMSC)
According to prior art, when the MMSC contracted user initiates multimedia service, and when using CS territory voice, CS territory voice must use the ICS technology to be linked among the IMS.Fig. 1 has shown MMSC user how when having the network insertion of CS territory ability, the flow process that makes a call.As can be seen from Figure 1, MMSC user's Multimedia session separated into two parts:
Voice conversation is linked among the IMS via ICS in the CS territory.At first, user terminal UE-A sets up CS conference call (step 105) through CS territory and ICS node, initiates the calling to user terminal UE-B; Again by the ICS node to home service CSCF (Serving Call SessionControl Function; Be called for short S-CSCF) initiation session initiation protocol SIP call request (step 106), carry number and the voice conversation of terminal called UE-B in this request; S-CSCF carries out business logic processing (step 107); S-CSCF sends session initiation protocol SIP call request, the number and the voice conversation information (step 108) of carrying terminal called UE-B in this request to MMSC-AS (MMSC application server) again;
Multimedia session except that voice is linked among the IMS via the PS territory.At first, terminal UE-A to S-CSCF initiation session initiation protocol SIP call request, carries number and the MMSC session information (step 101) of terminal called UE-B through the PS territory in this request; S-CSCF carries out business logic processing (step 102); Afterwards, S-CSCF sends session initiation protocol SIP call request to MMSC-AS (MMSC application server) again, carries number and the MMSC session information (step 103) of terminal called UE-B in this request; MMSC-AS waits for the voice conversation (step 104) from the CS territory after receiving the SIP call request.
Above-mentioned two parts session, i.e. voice conversation and the Multimedia session except that voice conversation are concurrent execution, do not have precedence.All arrive MMSC server (ApplicationServer in these two sessions; AS) locate after; MMSC AS serves as agency's (Back to Back User Agent, B2BUA) back-to-back, is a session (step 109) with this two parts merged session; Session after will merging is again sent (step 110) through the SIP call request to S-CSCF, is continued to send (step 111) to far-end called subscriber UE-B by S-CSCF.
Yet in the present technology; From not carrying the MMSC session information in the call request of ICS; Make in Fig. 1; If step 103 arrives prior to step 108, promptly the Multimedia session except that voice in PS territory arrives said MMSC AS prior to the voice conversation in CS territory, and MMSC AS can wait for that then the session in CS territory arrives.If but step 108 arrives prior to step 103, MMSC AS then can not continue to wait for, but continues to call out, like this can't completing steps 109 performed merged session functions.
As if the user is that MMSC contracts, also is simultaneously that ICS is signatory.User UE is place in circuit exchange CS territory and packet switching PS territory simultaneously, but its PS access is that low speed IP inserts, and speech business can not be provided, and voice are still provided by the CS territory, and all the other Multimedia session provide in the PS territory.At this moment, during the multimedia that the MMSC contracted user initiates to comprise CS territory voice rose and exhales, how correctly accomplishing becoming of merged session needed a problem solving.
Summary of the invention
Technical problem to be solved by this invention is; A kind of call method that rises of multimedia conversation continuity business is provided; In relating to IMS field multimedia conversation continuity and centralized control business, guarantee correctly to accomplish merged session, realize that correct is exhaled at the MMSC application server.
The present invention provides a kind of call method that rises of multimedia conversation continuity business, comprising:
Multimedia conversation continuity business is MMSC user when initiating multimedia call:
In packet domain, be called number and carry the MMSC session information with the far-end called terminal number, the media session except that voice is sent to the MMSC application server;
In circuit domain, be called number and carry voice conversation information with the number of MMSC application server, voice conversation is made a call to the MMSC application server;
Said MMSC application server is a session with these two kinds of merged session after receiving said voice conversation and said MMSC session information, is that called number is proceeded to call out with the far-end called terminal number.
Wherein, said multimedia conversation continuity business is MMSC user in circuit domain and packet domain is parallel makes a call.
Further, said MMSC user comprises in the concrete steps that circuit domain makes a call:
Said MMSC user is that ICS node make a call in circuit domain through the IP Multimedia System centralized traffic with voice conversation, and this moment, called number adopted the number of MMSC application server;
After said ICS node is received calling, send the session initiation protocol call request, as called number, it is S-CSCF that this session initiation protocol call request is routed to the home service CSCF with the number of MMSC application server;
Said S-CSCF carries out business logic processing;
According to initial filter standard or norm is that iFC triggers, and said S-CSCF sends to the MMSC application server with said session initiation protocol call request, carries the number of voice conversation information and called MMSC application server in this session initiation protocol call request.
Further, said MMSC user comprises in the concrete steps that packet domain makes a call:
Said MMSC user makes a call the media session except that voice in packet domain; Called number in this call request is the number of far-end terminal called and has comprised the MMSC session information that it is S-CSCF that this call request is routed to the home service CSCF;
Said S-CSCF carries out business logic processing;
According to initial filter standard or norm is that iFC triggers, and said S-CSCF sends to the MMSC application server with the call request of session initiation protocol, carries the number and the MMSC session information of far-end terminal called in this call request.
Further; Said MMSC application server according to the said voice conversation and the related information of said MMSC session information set up related after; Said voice conversation and said MMSC session information are merged; Wherein, said related information is calling number or calling number and MMSC application server number.
Further, said MMSC application server according to the said voice conversation and the related information of said MMSC session information set up related after, said voice conversation and said MMSC session information are merged, wherein, said related information is the MMSC session information.
Said MMSC session information generally includes MMSC conversation type sign, is used for descriptive session branch situation.
The number of said MMSC application server be static configuration in user terminal or the terminal in registration process, dynamically obtain.
Said MMSC user is to be that the ICS node is sent to the MMSC application server with the media session except that voice through the IP Multimedia System centralized traffic in circuit domain; Wherein, said ICS node be I1-cs framework or I1-ps framework or the enhanced MSC framework.
The present invention is than prior art; When the multimedia of initiating to comprise CS territory voice the MMSC contracted user rises and exhales, send two parts session respectively, that is: the session A that initiates of PS territory; This session is the same with prior art, and called number is the far-end called number and carries MMSC information; The session B that uses ICS to initiate in the CS territory, its called number change the number of ownership IMS territory MMSC AS into.During these two call arrival MMSC AS, accomplish merged session by MMSC AS, processing continues to continue.
Analysis can know that as the arrival MMSC AS of session A elder generation, because it has carried the MMSC session information, MMSC AS can wait for the arrival of session B; If session B arrives MMSC AS earlier,, therefore no longer continue to call out to far-end because the destination that session B calls out is exactly MMSC AS.Simultaneously, MMSC AS receives when the destination is the session of oneself, knows that this session is the part of whole M MSC session, and other parts that need to wait for the MMSC session arrive.
Thereby, technical scheme of the present invention, the session in CS territory or PS territory arrives in advance all can realize the correct merging of said MMSC AS to two kinds of sessions, exhales thereby can correctly rise.
Description of drawings
Fig. 1 is the schematic flow sheet that existing MMSC user makes a call;
Fig. 2 realizes the schematic flow sheet that MMSC user makes a call among the present invention;
Fig. 3 is that I1-cs of the present invention works the sketch map of exhaling flow process implementation one;
Fig. 4 is that I1-cs of the present invention works the sketch map of exhaling flow process implementation two;
Fig. 5 is that I1-ps of the present invention works the sketch map of exhaling flow process;
Fig. 6 is that enhanced MSC of the present invention rises and exhales flow process.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is done to specify further below in conjunction with accompanying drawing.
Core concept of the present invention is: the multimedia that MMSC contracted user initiation comprises CS territory voice rises when exhaling; It sends two parts session respectively; That is: the session A that initiates of PS territory, this session is the same with prior art, and called number is the far-end called number and carries MMSC information; The session B that uses ICS to initiate in the CS territory, its called number change the number of ownership IMS territory MMSC AS into.During these two call arrival MMSC AS, accomplish merged session by MMSC AS, processing continues to continue.
As the arrival MMSC AS of session A elder generation, because it has carried the MMSC session information, MMSC AS can wait for the arrival of session B; If session B arrives MMSC AS earlier,, therefore no longer continue to call out to far-end because the destination that session B calls out is exactly MMSC AS.Simultaneously, MMSC AS receives when the destination is the session of oneself, knows that this session is the part of whole M MSC session, and other parts that need to wait for the MMSC session arrive.
After MMSC AS received session A and B, MMSC AS served as and acts on behalf of B2BUA back-to-back, is a session with these two merged session, continued to make a call to the destination.
As shown in Figure 2, the present invention realizes that MMSC user works the flow process of exhaling and may further comprise the steps:
201) MMSC user UE-A initiates multimedia call; Wherein the media session except that voice makes a call in the PS territory; UE-A sends the SIP call request; Called number in this call request is the number of far-end called UE-B and has comprised the MMSC session information that this call request is routed to home service CSCF (Serving Call Session Control Function is called for short S-CSCF).
202) S-CSCF carries out business logic processing;
203) trigger according to initial filter standard or norm (initial Filter Criteria is called for short iFC), S-CSCF sends to MMSC AS with the SIP call request.Carry number and the MMSC session information of far-end called UE-B in this call request.
The triggering method that the IMS that said iFC filter criteria is a standard is professional triggers through iFC, and said S-CSCf learns that this request is transmitted to MMSC AS.
Said MMSC session information generally includes MMSC conversation type sign, is used for describing whether remaining session branch is arranged, and calls out in the CS territory such as describing voice.
204) MMSC user UE-A initiates multimedia call, and wherein phonological component makes a call through the ICS technology in the CS territory, and this moment, called number adopted the number of MMSC AS.Wherein, the number of said MMSCAS can be static configuration in user terminal, also can be dynamically to obtain in registration process or in the session in the past.
205) after the ICS node is received calling, send the SIP call request, wherein called number is the MMSCAS number, and this SIP call request is routed to ownership S-CSCF.
206) S-CSCF carries out business logic processing.
207) trigger according to initial filter standard or norm (initial Filter Criteria is called for short iFC), S-CSCF sends to MMSC AS with the SIP call request, carries voice conversation information and called MMSC AS number in this SIP call request.
208) MMSC AS associates 2 sessions that received (being voice conversation and the media session except that voice) and merges processing; The number of the terminal called UE-B that use step 203 is received is as called number; Continue to send the SIP call request, this carries the SIP call request message that merges the back session and at first sends to S-CSCF;
Wherein, MMSC AS is according to the relevant information of 2 conference call receiving, and these two session associations are got up; Said relevant information can be calling number or MMSC AS number etc.When setting up association, session can adopt calling number as related information; Be whether MMSC AS can be same rear subscriber number through the calling number of judging two sessions; Think that both are the calling that same MMSC user initiated, thereby can 2 partial sessions be merged.Said relevant information can be calling number and MMSC application server number.
209) S-CSCF is again to far-end called UE-B route SIP call request (intermediate steps omission).
Wherein, step 201-203 and step 204-207 walk abreast, and do not have precedence.Terminal UE-the A that promptly makes a call is sent to MMSC-AS to voice conversation and the media session except that voice respectively concurrently, is to send after the session by MMSC-AS with two kinds of merged session again.
Because ICS has three kinds of frameworks, is respectively I1-cs framework, I1-ps framework, enhanced MSC framework, combine the ICS of three kinds of structures below respectively and, point out the realization flow of technical scheme of the present invention under every kind of concrete framework with reference to realization flow shown in Figure 2.Wherein, the user is that MMSC contracts, also is simultaneously that ICS is signatory.User UE is place in circuit exchange CS territory and packet switching PS territory simultaneously; It is that low speed IP inserts that but its PS inserts; Speech business can not be provided, and voice are still provided by the CS territory, and all the other Multimedia session provide in the PS territory; In each embodiment, the multimedia of initiating to comprise CS territory voice by the MMSC contracted user rises exhales.
Embodiment 1:
Fig. 3 is the implementation one of I1-cs framework for ICS of the present invention, and its background is that the mode of user terminal MMSC UE access IMS in the CS territory of signatory MMSC is I1-cs, and its multimedia groupware is carried on the PS territory.The concrete steps that MMSC UE preparation initiation comprises the multimedia call of CS territory voice comprise:
301) MMSC user UE is on ICS session control path; Send session information through unstructured supplementary service data (Unstructured Supplementary Service Data is called for short USSD); Its called number is a MMSC AS number, and this USSD message at first sends to VMSC;
302) VMSC gives the ICCF of ownership with the USSD forwards of receiving, network element that relates on the forward-path and this patent are irrelevant, are not giving unnecessary details;
303) MMSC user UE sends call setup message in the CS territory to VMSC, and the destination address of message is the number of ICCF;
304) after VMSC receives call setup message, carry the ISUP initial address message of ICCF address to the MGCF transmission according to called number;
305) MGCF sends the SIP conversation request to ICCF, and wherein called number is the ICCF number, and this message at first sends to CSCF;
306) trigger through iFC, CSCF sends to ICCF with the SIP call request of receiving
307) ICCF associates it after the message of receiving step 302 and 306.ICCF sends the SIP call request, and its destination address is the MMSC AS address that step 302 is received, this SIP request at first sends to CSCF; Here, setting up related information is calling number or MMSC AS number, further also two message is merged after association here.
308) trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
309) MMSC user UE sends the SIP call request in the PS territory to the destination, and its destination address is the UE2 number, and comprises the MMSC session information, and this message at first sends to CSCF;
310) after CSCF receives step 309 message, trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
311) MMSC AS associates according to session information after the message of receiving step 308 and 310, knows that this is that a MMSC calls out.2 merged session that MMSC AS will receive are served as B2BUA, continue to destination UE2 initiation session, and this SIP conversation request at first sends to CSCF;
312) CSCF is routed to destination address with the SIP call request, and omit in process path wherein.
Wherein, step 301,303, the 309th walks abreast, and does not have the sequencing restriction, and the later call establishment prior art of step 312 has, and is not giving unnecessary details here.
Embodiment 2:
Fig. 4 is the implementation two of I1-cs framework for ICS of the present invention, and its background is that the mode of MMSC user UE access IMS in the CS territory is I1-cs, and its multimedia groupware is carried on the PS territory.MMSC user UE prepares to initiate to comprise the multimedia call of CS territory voice, and the ICCF address in the calling on the ICS carrying control path is dynamically to obtain, and its concrete steps are:
401) MMSC user UE sends session information through USSD on ICS session control path, and its called number is a MMSC AS number, and this USSD message at first sends to VMSC;
402) VMSC gives the ICCF of ownership with the USSD forwards of receiving, network element that relates on the forward-path and innovative point of the present invention are irrelevant, are not giving unnecessary details here;
403) after ICCF receives step 402 message, preserve the session information in the USSD message,, and distribute an E.164 IMS routing number of form (IMS RoutingNumber is called for short IMRN) like MMSC AS number;
404) ICCF returns to MMSC user UE with the IMRN that distributes through USSD message, and wherein the network element of process and this patent are irrelevant on the path, ignore.
405) after MMSC user UE receives IMRN, send call setup message in the CS territory to VMSC, the destination address of message is the number of the IMRN that receives;
406) after VMSC receives call setup message, send the ISUP initial address message to MGCF according to called number;
407) MGCF sends the SIP conversation request to ICCF, and wherein called number is IMRN, and this message at first sends to CSCF;
408) trigger through iFC, CSCF sends to ICCF with the SIP call request of receiving;
409) ICCF is after receiving step 408 message, and the associating information of preserving according to IMRN and step 403 gets up.ICCF continues to send the SIP call request, and its destination address is the MMSC AS address that step 402 is received, this SIP request at first sends to CSCF;
410) trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
411) MMSC user UE sends the SIP call request in the PS territory to the destination, and its destination address is the UE2 number, and comprises the MMSC session information, and this message at first sends to CSCF;
412) after CSCF receives step 411 message, trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
413) MMSC AS associates according to session information after the message of receiving step 410 and 412, knows that this is that a MMSC calls out.2 merged session that MMSC AS will receive are served as B2BUA, continue to destination UE2 initiation session, and this SIP conversation request at first sends to CSCF;
414) CSCF is routed to destination address with the SIP call request, and omit in process path wherein.
It is pointed out that step 401 is serials to step 410, step 401 and 411 walks abreast, and perhaps step 405 and step 411 are parallel.The later call establishment of step 414 is prior art, repeats no more here.
Embodiment 3:
Fig. 5 is the implementation of I1-ps framework for ICS of the present invention, and its background is that the mode of MMSC user UE access IMS in the CS territory is I1-ps, and its multimedia groupware is carried on the PS territory.The concrete steps that MMSC user UE preparation initiation comprises the multimedia call of CS territory voice are:
501) MMSC user UE promptly on the PS territory, sends the SIP conversation request to called UE 2 on ICS session control path.Its called number is the number of MMSC AS.Because this request purpose is to set up ICS to call out the control path, this call request does not comprise SDP information.This message at first sends to CSCF;
502) trigger through iFC, CSCF sends to ICCF with the SIP call request of receiving;
503) MMSC user UE sends call setup message in the CS territory to VMSC, and the destination address of message is the number of ICCF;
504) after VMSC receives call setup message, send the ISUP initial address message to MGCF according to called number;
505) MGCF sends the SIP conversation request to ICCF, and wherein called number is the ICCF number, and this message at first sends to CSCF;
506) trigger through iFC, CSCF sends to ICCF with the SIP call request of receiving;
507) ICCF associates it after the message of receiving step 502 and 506.ICCF continues to send the SIP call request, and its destination address is the MMSC AS address that step 502 is received, this SIP request at first sends to CSCF;
508) trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
509) MMSC user UE sends the SIP call request in the PS territory to the destination, and its destination address is the UE2 number, and comprises MMSC session information and PS field multimedia conversation SDP information, and this message at first sends to CSCF;
510) after CSCF receives step 509 message, trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
511) MMSC AS associates according to session information after the message of receiving step 508 and 510, knows that this is that a MMSC calls out.2 merged session that MMSC AS will receive are served as B2BUA, continue to destination UE2 initiation session, and this SIP conversation request at first sends to CSCF;
512) CSCF is routed to destination address with the SIP call request, and omit in process path wherein.
It is pointed out that step 501,503, the 509th, walk abreast do not have the sequencing restriction, the later call establishment prior art of step 512 has, and repeats no more here.
Embodiment 4:
Fig. 6 is an enhanced MSC implementation of the present invention, and its background is that the mode of MMSC user UE access IMS in the CS territory is an enhanced MSC, and its multimedia groupware is carried on the PS territory.The concrete steps that MMSC user UE preparation initiation comprises the multimedia call of CS territory voice are:
601) MMSC user UE sends call setup message in the CS territory to enhanced MSC, and the destination address of message is MMSC AS address;
602) after enhanced MSC is received call setup message, send the SIP call request, wherein called number is a MMSC AS number, and this message at first sends to CSCF;
603) trigger through iFC, CSCF sends to ICCF with the SIP call request of receiving;
604) MMSC user UE sends the SIP call request in the PS territory to the destination, and its destination address is the UE2 number, and comprises the MMSC session information, and this message at first sends to CSCF;
605) after CSCF receives step 604 message, trigger through iFC, CSCF sends to MMSC AS with the SIP call request of receiving;
606) MMSC AS associates according to session information after the message of receiving step 603 and 605, knows that this is that a MMSC calls out.2 merged session that MMSC AS will receive are served as B2BUA, continue to destination UE2 initiation session, and this SIP conversation request at first sends to CSCF;
607) CSCF is routed to destination address with the SIP call request, and omit in process path wherein.
It is pointed out that step 601, the 604th, walk abreast do not have the sequencing restriction, the later call establishment prior art of step 607 has, and is not repeating.
The preferred embodiments of the present invention that are merely described herein are not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Therefore, all any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improve and upgrade or the like, all should be included within protection scope of the present invention.
Claims (9)
1. a call method of a multimedia conversation continuity business is characterized in that, comprising:
Multimedia conversation continuity business is MMSC user when initiating multimedia call:
In packet domain, be called number and carry the MMSC session information with the far-end called terminal number, the media session except that voice is sent to the MMSC application server;
In circuit domain, be called number and carry voice conversation information with the number of MMSC application server, voice conversation is made a call to the MMSC application server;
Said MMSC application server is a session with these two kinds of merged session after receiving said voice conversation and said MMSC session information, is that called number is proceeded to call out with the far-end called terminal number.
2. method of calling as claimed in claim 1 is characterized in that,
Said multimedia conversation continuity business is MMSC user in circuit domain and packet domain is parallel makes a call.
3. method of calling as claimed in claim 1 is characterized in that, said MMSC user comprises in the concrete steps that circuit domain makes a call:
Said MMSC user is that ICS node make a call in circuit domain through the IP Multimedia System centralized traffic with voice conversation, and this moment, called number adopted the number of MMSC application server;
After said ICS node is received calling, send the session initiation protocol call request, as called number, it is S-CSCF that this session initiation protocol call request is routed to the home service CSCF with the number of MMSC application server;
Said S-CSCF carries out business logic processing;
According to initial filter standard or norm is that iFC triggers, and said S-CSCF sends to the MMSC application server with said session initiation protocol call request, carries the number of voice conversation information and called MMSC application server in this session initiation protocol call request.
4. method of calling as claimed in claim 1 is characterized in that, said MMSC user comprises in the concrete steps that packet domain makes a call:
Said MMSC user makes a call the media session except that voice in packet domain; Called number in this call request is the number of far-end terminal called and has comprised the MMSC session information that it is S-CSCF that this call request is routed to the home service CSCF;
Said S-CSCF carries out business logic processing;
According to initial filter standard or norm is that iFC triggers, and said S-CSCF sends to the MMSC application server with the call request of session initiation protocol, carries the number and the MMSC session information of far-end terminal called in this call request.
5. method of calling as claimed in claim 1 is characterized in that,
Said MMSC application server according to the said voice conversation and the related information of said MMSC session information set up related after; Said voice conversation and said MMSC session information are merged; Wherein, said related information is calling number or calling number and MMSC application server number.
6. method of calling as claimed in claim 1 is characterized in that,
Said MMSC application server according to the said voice conversation and the related information of said MMSC session information set up related after, said voice conversation and said MMSC session information are merged, wherein, said related information is the MMSC session information.
7. like claim 1 or 5 described method of callings, it is characterized in that,
Said MMSC session information generally includes MMSC conversation type sign, is used for descriptive session branch situation.
8. like claim 1 or 3 described method of callings, it is characterized in that,
The number of said MMSC application server be static configuration in user terminal or the terminal dynamically obtain in registration process or in the session in the past.
9. like claim 1 or 3 described method of callings, it is characterized in that,
Said MMSC user is to be that the ICS node is sent to the MMSC application server with the media session except that voice through the IP Multimedia System centralized traffic in circuit domain; Wherein, said ICS node be I1-cs framework or I1-ps framework or the enhanced MSC framework.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810000368 CN101692722B (en) | 2008-01-08 | 2008-01-08 | Method for calling multimedia session continuity service |
| PCT/CN2008/073606 WO2009092245A1 (en) | 2008-01-08 | 2008-12-19 | Call originating method for multimedia session continuity service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810000368 CN101692722B (en) | 2008-01-08 | 2008-01-08 | Method for calling multimedia session continuity service |
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| Publication Number | Publication Date |
|---|---|
| CN101692722A CN101692722A (en) | 2010-04-07 |
| CN101692722B true CN101692722B (en) | 2012-07-04 |
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| CN 200810000368 Expired - Fee Related CN101692722B (en) | 2008-01-08 | 2008-01-08 | Method for calling multimedia session continuity service |
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| CN (1) | CN101692722B (en) |
| WO (1) | WO2009092245A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101938467B (en) * | 2010-08-04 | 2013-05-08 | 北京邮电大学 | Communication system and method for supporting internetwork multimedia session splitting realization |
| US9351203B2 (en) * | 2013-09-13 | 2016-05-24 | Microsoft Technology Licensing, Llc | Voice call continuity in hybrid networks |
| CN104917717B (en) * | 2014-03-10 | 2018-09-07 | 中国移动通信集团北京有限公司 | A kind of method of calling, equipment and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801998A (en) * | 2004-12-31 | 2006-07-12 | 华为技术有限公司 | Conversation switching method from multimedia subsystem domain to circuit subsystem domain |
| CN101094442A (en) * | 2006-08-23 | 2007-12-26 | 中兴通讯股份有限公司 | Method and system for grappling final call in circuit switching domain |
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| BRPI0706886A2 (en) * | 2006-01-31 | 2011-04-12 | Interdigital Tech Corp | Circuit-switched interworking support method and apparatus |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801998A (en) * | 2004-12-31 | 2006-07-12 | 华为技术有限公司 | Conversation switching method from multimedia subsystem domain to circuit subsystem domain |
| CN101094442A (en) * | 2006-08-23 | 2007-12-26 | 中兴通讯股份有限公司 | Method and system for grappling final call in circuit switching domain |
Non-Patent Citations (1)
| Title |
|---|
| 3GPP.Feasibility Study on Multimedia Session Continuity.《3GPP TR23.893 V1.0.0》.2007,第20-21页. * |
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| Publication number | Publication date |
|---|---|
| CN101692722A (en) | 2010-04-07 |
| WO2009092245A1 (en) | 2009-07-30 |
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