CN101998568B - Method for realizing multi-session service continuity - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
- H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0027—Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
Abstract
The invention provides a method for realizing multi-session service continuity. The method comprises the following steps that: when switching from a packet switch (PS) domain to a circuit switch (CS) domain, user equipment (UE) selects a first session from sessions in which the UE participates according to a preset strategy, and generates a CS domain participant identifier to a specific participant in the first session; the UE generates the CS domain participant identifier to other multi-session service participants besides the specific participant according to a preset rule; a service continuity application server (SCC AS) selects the first session according to the strategy after receiving a transfer request sent by an enhanced mobile switch centre (eMSC), updates a remote leg medium of the first session, and sends the information of all the participants to the eMSC, wherein the information of the specific participant is placed at a preset specific position in the information of all the participants; the eMSC generates the CS domain participant identifier of the participant at the specific position and generates the CS domain participant identifier of other participants according to the information of other participants; and the UE employs the CS domain participant identifier to perform the multi-session service with the remote legs of the sessions through the eMSC.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to a kind of multi-conversation business continuity implementation method of (ServiceContinuity is called for short SC).
Background technology
IP (Internet Protocol, network interconnection agreement) IP multimedia subsystem, IMS (IP Multimedia CoreNetwork Subsystem, be called for short IMS) be by 3GPP (3rd Generation Partnership Project, third generation partner program) a kind of IP-based network framework of Ti Chuing, made up an opening and service environment flexibly, it supports multimedia application, can provide abundant multimedia service for the user.
In the IMS business system, key-course separates with operation layer, and key-course does not provide concrete business, and functions such as necessary triggering, route, charging only are provided to operation layer.Professional triggering and control function are CSCF (Call Session Control Function in the key-course, be called for short CSCF) finish, CSCF is divided into and acts on behalf of three types of Proxy (be called for short P-CSCF), inquiry Interrogating and service Serving (being called for short S-CSCF), that wherein take the main responsibility is Serving, and the Interrogating type is optional.Operation layer is to be made up of a series of application servers (Application Server, be called for short AS), and concrete business service can be provided, and AS can be entity independently, also may reside among the S-CSCF.Key-course S-CSCF calls the business on the AS according to user's professional triggering of CAMEL-Subscription-Information control, realizes business function.AS and S-CSCF can be referred to as service equipment (SE, Server Equipment).End-to-end equipment in the session is called subscriber equipment (User Equipment, be called for short UE), is responsible for mutual with the user.The UE that has has the mode of multiple access network, comprise packet-switched domain (the Packet Switch by 3GPP, be called for short the PS territory) access network, the data field access network by other non-3GPP, even can be by circuit switching (Circuit Switch, abbreviation CS) territory access network etc.If the CS network configuration enhancing mobile switching centre (enhanced Mobile Switch Center, be called for short eMSC), provide the interface of Session Initiation Protocol to come and the IMS network interaction by eMSC, then IMS network and CS network can realize by eMSC alternately.
Multi-conversation business refers to the session service of participation in many ways, and for example, MultiParty Service, convention business and a plurality of independent sessions etc. can be called multi-conversation business.For the UE with plurality of access modes, no matter it can use plurality of access modes simultaneously still is that certain only uses a kind of access way constantly, if it is carrying out a certain business under a kind of access way, such as conversation, other are local and when needing to change the access way of using when UE moves to, the business that UE and network can provide certain mode that UE is being carried out is not interrupted, we are referred to as business continuance such ability, realize that the application server of business continuance becomes business continuance application server (SCC AS).
Fig. 1 is the business continuance schematic diagram, signaling paths and media path that UE-1 and UE-2 set up session have been described, and behind the generation business continuance, the signaling paths of UE-1 and UE-2 and media path, be simplicity of illustration and description, S-CSCF and business continuance AS (SCC AS) are drawn as an entity, use the Session Initiation Protocol communication of standard between the two.
Business continuance has been set up session between UE-1 and UE-2 before taking place, and its signaling paths is described below:
Signaling paths between A102, UE-1 and the P-CSCF, the Session Initiation Protocol by IMS communicates with one another, and for SCC AS, this is access end (Access leg) path;
Signaling paths between A104, P-CSCF and the SCC AS/S-CSCF, the Session Initiation Protocol by IMS communicates with one another, and for SCC AS, this also belongs to access end (Access leg) path;
Signaling paths between R101, SCC AS/S-CSCF and the UE-2, the Session Initiation Protocol by IMS communicates with one another, and for SCC AS, this is far-end (Remote leg) path;
After business continuance took place, variation had all taken place in the signaling paths between UE-1 and UE-2 and media path, and wherein the variation of signaling paths is described below:
Signaling paths between A112, UE-1 and the eMSC, the signaling protocol by the CS territory communicates with one another, and for SCC AS, this is access end (Access leg) path;
Signaling paths between A114, eMSC and the SCC AS/S-CSCF, the Session Initiation Protocol by IMS communicates with one another, and for SCC AS, this also belongs to access end (Access leg) path;
Signaling paths between R101, SCC AS/S-CSCF and the UE-2, the Session Initiation Protocol by IMS communicates with one another, and for SCC AS, this is far-end (Remote leg) path, and after business continuance took place, this far end path did not change.
Be to simplify flow process to describe with figure below, SCC AS and CSCF are combined into an entity description.
Fig. 2 is existing multi-conversation business continuity realization flow figure, has described UE-A and set up conversation respectively between PS territory and UE-B, UE-C, and UE-A switches to the CS territory, and how UE-A and network realize the successional process of multi-conversation business, and it is described below:
Step 201, UE-A sets up IMS media links 1 by the IMS process with UE-B in the PS territory, set up IMS media links 2 with UE-C, two sessions are arranged between UE-A and the UE-B/UE-C, two sessions are all by SCC AS grappling, SCC AS is in all session signaling paths, and in setting up the IMS message of session, SCC AS and UE-A transmit Transaction Identifier number (Transaction Identifier, be called for short TI) with both TI information synchronously, in the CS territory, after session is set up, UE-A does not re-use remote number and operates, and be to use this information in the CS territory far-end participant to be operated, and such as the session of request maintenance or activation and respective distal end, certain participant in the deletion meeting (being called MPTY in the CS territory);
Step 202, UE-A switch to the CS territory, or network notice UE-A switches to the CS territory;
Step 203, if UE-A determines to switch to the CS territory, then UE-A initiates the CS call request in the CS territory, such as sending SETUP message, target is the number of SCC AS;
Step 204, eMSC receive 203 call request, or after receiving the handover request of network notice, initiate the IMS transfer request to SCC AS, and such as sending INVITE (invitation) message, message travels CSCF arrives SCC AS;
After step 205, SCC AS receive transfer request, initiate the medium update request to UE-B, such as sending reINVITE (heavily inviting) message, message travels CSCF arrives UE-B;
Step 206, UE-B agree to upgrade, and such as sending " 200OK " message, message travels CSCF arrives SCC AS;
Step 207, SCC AS send the response message of transfer request to eMSC, such as sending " 200OK " message, carry the information of other sessions that UE-A participates in the message body, comprise corresponding TI information, and message travels CSCF arrives eMSC;
So far, eMSC has also obtained the TI information identical with UE-A, makes UE-A use TI can both carry out correspondence in the CS territory to the operation eMSC that corresponding session is carried out as session label information.
After step 208, eMSC receive the response message of transfer request, send the CS link in the CS territory to UE-A and set up message, such as sending CONNECTED message;
So far, set up the CS media links between UE-A and eMSC, IMS media links 1 is updated to the media links between eMSC and UE-B.
Step 209, eMSC initiate to shift the session request to UE-C according to other session informations in the response message, carry corresponding session label information, and such as carrying in Replaces header field or Target-Dialog header field, message travels CSCF arrives SCC AS;
Step 210, SCC AS send the medium update request according to the session label information of carrying in the message to UE-C, and such as sending reINVITE message, message travels CSCF arrives UE-C;
Step 211, UE-C agree to upgrade, and such as sending " 200OK " message, message travels CSCF arrives SCC AS;
Step 212, SCC AS send response message with the calling of response steps 209 to eMSC, and such as sending " 200OK " message, message travels CSCF arrives eMSC;
Step 213, SCC AS send to UE-A and hang up message with the resource of the IMS media links 1 of release UE-A, and such as sending BYE message, message travels CSCF arrives UE-A;
Step 214, SCC AS send to UE-A and hang up message with the resource of the IMS media links 2 of release UE-A, and such as sending BYE message, message travels CSCF arrives UE-A;
So far, IMS media links 2 is updated to the media links between eMSC and UE-C.
Existing multi-conversation business continuity implementation method requires to pass through IMS message synchronization TI information when the PS session is set up, this requires expansion IMS message, thereby can't compatible not support the terminal of this extended message.
Summary of the invention
The technical problem to be solved in the present invention provides the successional method of a kind of multi-conversation business, avoids IMS message is expanded.
In order to address the above problem, the invention provides the successional method of a kind of multi-conversation business, when the business continuance of user equipment (UE) generation from packet switching PS territory to the circuit switching (CS) territory switched, this method comprised:
Described UE selects first session according to predefined strategy from each session that it participates in, be the particular participant generation CS territory participant identifying of described first session; And be that other multi-conversation business participant beyond the particular participant of first session generates CS territory participant identifying according to preset rule;
Strengthen the eMSC of mobile switching centre and send transfer request to business continuance server S CC AS, after receiving described transfer request, described SCC AS is according to described first session of described policy selection, upgrade the distant end media of described first session, and described all participants' information sent to described eMSC, the described particular participant information of wherein said first session is placed on predefined ad-hoc location in described all participants' the information;
Described eMSC generates the participant's of described ad-hoc location described CS territory participant identifying, and generates described other each participant's CS territory participant identifying according to described rule according to described other participant's information;
Described UE uses described CS territory participant identifying to carry out multi-conversation business by the far-end of described eMSC and described each session.
Further, described rule is: the information to described other each participant sorts, and generates corresponding CS territory participant identifying according to the result of ordering for described other each participant.
Further, described rule is: if described first session is conference session, the far-end that then is another session generates maximum transaction identification number TI value, and other each participant's of described conference session information sorted, generate corresponding CS territory participant identifying according to the result of ordering for described other each participant.
Further, if the session that described UE participates in comprises conference session, then described participant's information comprises each member's of this conference session identification information.
Further, if each session that described UE participates in is non-conference session, or will parliament's words regard non-conference session as, then described participant's information comprises: the identification information of the session identification of described each session or the far-end of described session.
Further, described strategy comprises: the session of selecting to activate recently or keep recently is as described first session, if described first session is conference session, then described participant is the nearest adding of described first session or the member who adds meeting the earliest, otherwise described particular participant is the far-end of described first session.
The present invention also provides a kind of multi-conversation business successional method, and when the business continuance of user equipment (UE) generation from packet switching PS territory to the circuit switching (CS) territory switched, this method comprised:
Described UE generates each session participant's CS territory participant identifying according to preset rule according to each the session participant's who participates in information;
Strengthen the eMSC of mobile switching centre and send transfer request to business continuance server S CC AS, receive described transfer request after, described SCC AS sends to described eMSC with described all participants' information;
Described eMSC generates each session participant's described CS territory participant identifying according to described rule according to described all participants' information;
Described UE uses described CS territory participant identifying to carry out multi-conversation business by the far-end of eMSC and described each session.
Further, described rule is: the information to described participant sorts, and generates corresponding CS territory participant identifying according to the result of ordering for described each participant.
Further, described rule is: if described first session is conference session, then generate maximum TI value for the far-end of another session, and other each participant's of described conference session information sorted, generate corresponding CS territory participant identifying according to the result of ordering for described other each participant.
Further, if the session that described UE participates in comprises conference session, then described participant's information comprises each member's of this conference session identification information; If each session that described UE participates in is non-conference session, or will parliament's words regard non-conference session as, then described participant's information comprises: the identification information of the session identification of described each session or the far-end of described each session.
Description of drawings
The schematic diagram that business continuance front and back signaling/media path changes takes place in Fig. 1;
Fig. 2 is existing multi-conversation business continuity realization flow figure;
Fig. 3 is the multi-conversation business continuity realization flow figure of the embodiment of the invention;
Fig. 4 is the multi-conversation business continuity realization flow figure of another embodiment of the present invention;
Fig. 5 is the convention business continuity realization flow figure of the embodiment of the invention.
Embodiment
Core concept of the present invention is: UE-A and eMSC are that each session participant that UE-A participates in generates corresponding TI information (CS territory participant identifying) according to same preset rule, UE-A can use this CS territory session identification to carry out multi-conversation business by the far-end of eMSC and session, and the operation eMSC to different participants can both carry out correspondence in the CS territory namely to make UE-A.
In addition, UE can also be according to session of predefined policy selection as first session, the particular participant that is first session generates the CS domain identifier, and generates corresponding TI information (CS territory participant identifying) by preset rule for other multi-conversation business participant beyond this participant; SCC AS finishes the renewal to the far-end of this session according to first session of identical policy selection, and the particular participant of first session and other multi-conversation business participant's information are sent to eMSC; EMSC sorts to other multi-conversation business participant's information, generates corresponding TI information (CS territory participant identifying), and the operation eMSC to different participants can both carry out correspondence in the CS territory thereby make UE-A.
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
Fig. 3 is the multi-conversation business continuity realization flow figure of the embodiment of the invention, describe multimode terminal UE-A and between PS territory and UE-B, UE-C, set up conversation respectively, when UE-A finds that use CS territory can be used and determine in the CS territory, how UE-A and network realize the successional process of multi-conversation business, and it is described below:
Step 301, multimode terminal UE-A set up IMS media links 1 by the IMS process with UE-B in the PS territory, set up IMS media links 2 with UE-C, and SCC AS is in all session signaling paths;
Step 302, UE-A find that the CS territory can be used and the CS territory is used in decision;
Step 303, UE-A select one as first session according to predefined strategy from each session that participates in, this session is the session of UE-A and UE-B in the present embodiment, this session has only a participant, therefore the particular participant of selecting can only be UE-B, for the participant UE-B of this first session gives specific TI value (as 0), this TI value is the sign of in the CS territory session participant being operated as UE-A; And according to preset rule other multi-conversation business participant beyond the particular participant of first session is sorted, in order to generate corresponding TI value for other session;
Wherein, above-mentioned predefined strategy can comprise: the session that will activate recently is as first session, or the session that will keep recently is as first session;
Above-mentioned preset rule can comprise: the participant information to other multi-conversation business (for example sorts, ascending order or descending), generate and the corresponding TI information of each participant according to ranking results, be each participant and give corresponding TI value, for example, this TI value can be numerical value of 1 to 7 etc., because the maximum upper limit of TI value is 7, if first session is conference session, for the participant who prevents another session can't be assigned to the TI value cause UE to this session without any control (hanging up also not all right), can be earlier give TI value 7 for the participant of another session, even another session this moment is conference session, also it can be considered as non-conference session, thereby its participant is conference centre;
Step 304, UE-A initiate the CS call request in the CS territory, such as sending SETUP message, the TI value of carrying is the specific T I value (as 0) of acquisition in the step 303, and target is the number of SCC AS;
Step 305, eMSC receive 304 call request, initiate the IMS transfer request to SCC AS, and such as sending INVITE (invitation) message, message travels CSCF arrives SCC AS;
Step 306, SCC AS receive transfer request, according to step 303 in identical policy selection first session, for example first session is the session of UE-A and UE-B;
Step 307, SCC AS initiate the medium update request to UE-B, and such as sending reINVITE (heavily inviting) message, message travels CSCF arrives UE-B;
Step 308, UE-B agree to upgrade, and such as sending " 200OK " message, message travels CSCF arrives SCC AS;
Step 309, SCC AS send response message to eMSC, such as sending " 200OK " message, carry multi-conversation business participant's information in the message body, and the particular participant of first session (being UE-B in this example) information is placed on the predefined ad-hoc location (as first position or last position etc.) of particular block in the message body, message travels CSCF arrives eMSC;
Wherein, above-mentioned particular block comprises: the session information block, and when convention business, the information in the conferencing information block also, two blocks is collectively referred to as multi-conversation business participant's information, and present embodiment is the session information block;
Step 310, eMSC send the CS link in the CS territory to UE-A and set up message, such as sending CONNECTED message;
The multi-conversation business participant's that step 311, eMSC basis are received information, be that the particular participant of first session is given specific T I value by the mode identical with step 303, and the employing rule identical with step 303 is that other multi-conversation business participant generates corresponding TI value by ordering;
So far, eMSC has also obtained the TI information identical with UE-A, and the operation eMSC to different sessions can both carry out correspondence in the CS territory to make UE-A.
So far, set up the CS media links between UE-A and eMSC, IMS media links 1 is updated to the media links between eMSC and UE-B.
Step 312～317, identical with step 209～214 among Fig. 2.
Because when switching, hope can at first be switched a certain special session, therefore in this embodiment, need select first session, and at first the far-end of this first session be upgraded by SCC AS; But in present embodiment of the present invention and other embodiment, can not emphasize that also which session must at first switch, in this case, only need to sort according to the information of preset rule to many sessions participant of UE-A between UE-A and the eMSC, generation gets final product with the corresponding TI information of each participant according to ranking results, need not to select first session.
Fig. 4 is the multi-conversation business continuity realization flow figure of the embodiment of the invention, describe single-mode terminal UE-A and between PS territory and UE-B, UE-C, set up conversation respectively, UE-A moves to the zone of having only CS to cover, when network notice UE-A switches to CS, how UE-A and network realize the successional process of multi-conversation business, and it is described below:
Step 401, single-mode terminal UE-A set up IMS media links 1 by the IMS process with UE-B in the PS territory, set up IMS media links 2 with UE-C, and SCC AS is in all session signaling paths;
Step 402, UE-A move to the zone of having only CS to cover, and network notice UE-A switches to CS;
Step 403, UE-A select one as first session according to predefined strategy from each session that participates in, this session is the session of UE-A and UE-B in the present embodiment, this session has only a participant, therefore the particular participant of selecting can only be UE-B, for the participant UE-B of this first session gives specific TI value (as 0), this TI value is the sign of in the CS territory session participant being operated as UE-A; And according to preset rule other multi-conversation business participant beyond the particular participant of first session is sorted, in order to generate corresponding TI value for other session;
Wherein, above-mentioned predefined strategy can comprise: the session that will activate recently is as first session, or the session that will keep recently is as first session;
Above-mentioned preset rule can comprise: the participant information to other multi-conversation business (for example sorts, ascending order or descending), generate and the corresponding TI information of each participant according to ranking results, be each participant and give corresponding TI value, for example, this TI value can be numerical value of 1 to 7 etc., because the maximum upper limit of TI value is 7, if first session is conference session, for the participant who prevents another session can't be assigned to the TI value cause UE to this session without any control (hanging up also not all right), can be earlier give TI value 7 for the participant of another session, even another session this moment is conference session, also it can be considered as non-conference session, thereby its participant is conference centre;
Step 404, eMSC receive the handover request of network notice, initiate the IMS transfer request to SCC AS, and such as sending INVITE (invitation) message, message travels CSCF arrives SCC AS;
Step 405～408,306～309 identical with Fig. 3;
Step 409～415,311～317 identical with Fig. 3.
Fig. 5 is the convention business continuity realization flow figure of the embodiment of the invention, convention business is owing to there is participation in many ways, also belong to many session case, describe single-mode terminal UE-A and set up conference call in PS territory and UE-B, UE-C, UE-A moves to the zone of having only CS to cover, when network notice UE-A switched to CS, how UE-A and network realized the successional process of multi-conversation business, and it is described below:
Step 501, single-mode terminal UE-A set up meeting and UE-B and UE-C are added meeting at PS, media links between UE-A and convention business server (CONF AS) is IMS media links 3, the media links of CONFAS and UE-B is IMS media links 1, the media links of CONF AS and UE-C is IMS media links 2, and SCC AS is in the conference session signaling paths;
Step 502, UE-A move to the zone of having only CS to cover, and network notice UE-A switches to CS;
Step 503, UE-A select one as first session according to predefined strategy from each session that participates in, has only a conference session in the present embodiment, this session has a plurality of participants, select particular participant again, present embodiment is UE-B, for the particular participant UE-B of this first session gives specific TI value (as 0), this TI value is the sign of in the CS territory session participant being operated as UE-A; And according to preset rule other multi-conversation business participant (present embodiment is UE-C) beyond the particular participant of first session is sorted, in order to generate corresponding TI value for other session;
Wherein, above-mentioned predefined strategy can comprise: the session that will activate recently is as first session, or the session that will keep recently to the session of a plurality of participants is arranged, selects the participant of adding recently or adding the earliest as particular participant as first session;
Above-mentioned preset rule can comprise: the participant information to other multi-conversation business (for example sorts, ascending order or descending), generate and the corresponding TI information of each participant according to ranking results, be each participant and give corresponding TI value, for example, this TI value can be numerical value of 1 to 7 etc., because the maximum upper limit of TI value is 7, if first session is conference session, for the participant who prevents another session can't be assigned to the TI value cause UE to this session without any control (hanging up also not all right), can be earlier give TI value 7 for the participant of another session, even another session this moment is conference session, also it can be considered as non-conference session, thereby its participant is conference centre;
Step 504, identical with the step 404 of Fig. 4;
Step 505, SCC AS receive transfer request, according to step 503 in identical policy selection first session, present embodiment is the session of UE-A and CONF AS;
Step 506, SCC AS send the medium update request to convention business server (CONF AS), and such as sending reINVITE message, message travels CSCF arrives CONF AS;
Step 507, CONF AS agree to upgrade, and such as sending " 200OK " message, message travels CSCF arrives SCC AS;
Step 508, SCC AS send response message to eMSC, such as sending " 200OK " message, carry multi-conversation business participant's information in the message body, and the particular participant of first session (being UE-B in this example) information is placed on the predefined ad-hoc location (as first position or last position etc.) of particular block in the message body, message travels CSCF arrives eMSC;
Wherein, above-mentioned particular block comprises: the session information block, and when convention business, the information in the conferencing information block also, two blocks is collectively referred to as multi-conversation business participant's information, and present embodiment is the conferencing information block;
The multi-conversation business participant's that step 509, eMSC basis are received information, be that the particular participant of first session is given specific T I value by the mode identical with step 503, and the employing rule identical with step 503 is that other multi-conversation business participant generates corresponding TI value by ordering;
So far, eMSC has also obtained the TI information identical with UE-A, and the operation eMSC to different sessions can both carry out correspondence in the CS territory to make UE-A.
Step 510, SCC AS send to UE-A and hang up message with the resource of the IMS media links 3 of release UE-A, and such as sending BYE message, message travels CSCF arrives UE-A.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the successional method of multi-conversation business is characterized in that, when the business continuance of user equipment (UE) generation from packet switching PS territory to the circuit switching (CS) territory switched, this method comprised:
Described UE selects first session according to predefined strategy from each session that it participates in, be the particular participant generation CS territory participant identifying of described first session; And be that other multi-conversation business participant beyond the particular participant of first session generates CS territory participant identifying according to preset rule;
Strengthen the eMSC of mobile switching centre and send transfer request to business continuance server S CC AS, after receiving described transfer request, described SCC AS is according to described first session of described policy selection, upgrade the distant end media of described first session, and all participants' information sent to described eMSC, the described particular participant information of wherein said first session is placed on predefined ad-hoc location in described all participants' the information;
Described eMSC generates the participant's of described ad-hoc location described CS territory participant identifying, and generates other each participant's CS territory participant identifying according to described rule according to other participant's information;
Described UE uses described CS territory participant identifying to carry out multi-conversation business by the far-end of described eMSC and each session.
2. the method for claim 1 is characterized in that,
Described rule is: the information to described other each participant sorts, and generates corresponding CS territory participant identifying according to the result of ordering for described other each participant.
3. the method for claim 1 is characterized in that,
Described rule is: if described first session is conference session, the far-end that then is another session generates maximum transaction identification number TI value, and other each participant's of described conference session information sorted, generate corresponding CS territory participant identifying according to the result of ordering for described other each participant.
4. as claim 1,2 or 3 described methods, it is characterized in that,
If the session that described UE participates in comprises conference session, then described participant's information comprises each member's of this conference session identification information.
5. as claim 1,2 or 3 described methods, it is characterized in that,
If each session that described UE participates in is non-conference session, or will parliament's words regard non-conference session as, then described participant's information comprises: the identification information of the session identification of described each session or the far-end of described session.
6. the method for claim 1 is characterized in that,
Described strategy comprises: the session of selecting to activate recently or keep recently is as described first session, if described first session is conference session, then described participant is the nearest adding of described first session or the member who adds meeting the earliest, otherwise described particular participant is the far-end of described first session.
7. the successional method of multi-conversation business is characterized in that, when the business continuance of user equipment (UE) generation from packet switching PS territory to the circuit switching (CS) territory switched, this method comprised:
Described UE generates each session participant's CS territory participant identifying according to preset rule according to each the session participant's who participates in information;
Strengthen the eMSC of mobile switching centre and send transfer request to business continuance server S CC AS, receive described transfer request after, described SCC AS sends to described eMSC with all participants' information;
Described eMSC generates each session participant's described CS territory participant identifying according to described rule according to described all participants' information;
Described UE uses described CS territory participant identifying to carry out multi-conversation business by the far-end of eMSC and each session.
8. method as claimed in claim 7 is characterized in that,
Described rule is: the information to described participant sorts, and generates corresponding CS territory participant identifying according to the result of ordering for described each participant.
9. method as claimed in claim 7 is characterized in that,
Described rule is: if described first session is conference session, then generate maximum TI value for the far-end of another session, and other each participant's of described conference session information sorted, generate corresponding CS territory participant identifying according to the result of ordering for described other each participant.
10. as claim 7,8 or 9 described methods, it is characterized in that,
If the session that described UE participates in comprises conference session, then described participant's information comprises each member's of this conference session identification information; If each session that described UE participates in is non-conference session, or will parliament's words regard non-conference session as, then described participant's information comprises: the identification information of the session identification of described each session or the far-end of described each session.
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| CN200910165668.0A CN101998568B (en) | 2009-08-14 | 2009-08-14 | Method for realizing multi-session service continuity |
| PCT/CN2009/075859 WO2011017881A1 (en) | 2009-08-14 | 2009-12-22 | Method and system for realizing multi-session service continuity |
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| CN200910165668.0A CN101998568B (en) | 2009-08-14 | 2009-08-14 | Method for realizing multi-session service continuity |
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| CN101998568B true CN101998568B (en) | 2013-08-07 |
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| CN102811471B (en) * | 2011-05-31 | 2017-04-12 | 华为终端有限公司 | Internetwork transferring method for priority session accessing and user equipment |
| CN108206898B (en) * | 2016-12-20 | 2021-03-19 | 展讯通信（上海）有限公司 | Method and device for realizing multi-party call and multi-pass terminal |
| CN115914176A (en) * | 2021-08-13 | 2023-04-04 | 华为技术有限公司 | Call processing method, device and system |
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| CN101212720A (en) * | 2007-12-25 | 2008-07-02 | 中兴通讯股份有限公司 | Method for the non-chairman party to participate in conference service in IP multimedia subsystem set |
| CN101217788A (en) * | 2008-01-08 | 2008-07-09 | 中兴通讯股份有限公司 | A calling method to start a successive operation of multimedia conversation |
| CN101426276A (en) * | 2007-11-02 | 2009-05-06 | 华为技术有限公司 | Method and apparatus for confirming service control mode |
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| US8467792B2 (en) * | 2006-06-27 | 2013-06-18 | Qualcomm Incorporated | Method and apparatus for maintaining call continuity in wireless communication |
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| US8094620B2 (en) * | 2007-06-26 | 2012-01-10 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for providing voice service in a multimedia mobile network |
| EP2235984A1 (en) * | 2007-12-07 | 2010-10-06 | Telefonaktiebolaget L M Ericsson (publ) | Domain transfer service continuity provision to a mobile terminal |
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| CN1890931A (en) * | 2003-10-17 | 2007-01-03 | 诺基亚有限公司 | System, apparatus, and method for establishing circuit-switched communications via packet switched network signaling |
| CN101426276A (en) * | 2007-11-02 | 2009-05-06 | 华为技术有限公司 | Method and apparatus for confirming service control mode |
| CN101212720A (en) * | 2007-12-25 | 2008-07-02 | 中兴通讯股份有限公司 | Method for the non-chairman party to participate in conference service in IP multimedia subsystem set |
| CN101217788A (en) * | 2008-01-08 | 2008-07-09 | 中兴通讯股份有限公司 | A calling method to start a successive operation of multimedia conversation |
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| WO2011017881A1 (en) | 2011-02-17 |
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