CN102333292B - Conversation transfer method and user equipment - Google Patents
Conversation transfer method and user equipment Download PDFInfo
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- CN102333292B CN102333292B CN201110302025.3A CN201110302025A CN102333292B CN 102333292 B CN102333292 B CN 102333292B CN 201110302025 A CN201110302025 A CN 201110302025A CN 102333292 B CN102333292 B CN 102333292B
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Abstract
The invention discloses a conversation transfer method and user equipment and relates to the field of communication, and the method and user equipment provided by the invention are used for solving the problem that the conversation transfer can not be conducted when the UE (user equipment) comprises voice conversation and video conversation simultaneously. According to the technical scheme provided by the invention, the conversation transfer method comprises the following steps of: determining a conversation in an activated state from the video conversation and the voice conversation; and lunching transfer of the conversation in the activated state so as to transfer the conversation in the activated state from a network side to a circuit switching domain, and transferring conversations in an unactivated state in the video conversation and the voice conversation. The embodiment of the invention can be applied in wireless communication networks.
Description
The application submits dividing an application of Patent Office, the patent No. are 200910139157.1, denomination of invention is " session transferring method and subscriber equipment " application for a patent for invention on May 5th, 2009, and this application is in full by reference in conjunction with in this application.
Technical field
The present invention relates to the communications field, relate in particular to a kind of session transferring method and subscriber equipment.
Background technology
In the prior art, as subscriber equipment (User Equipment, UE) from packet switching (Packet Switched) territory, transfer to circuit switching (Circuit Switched, CS) during territory, if UE comprises a plurality of voice conversations, UE can determine a target voice session from described a plurality of voice conversations, service set and conversation continuity server (Service Centralization and Continuity Application Server to network side, SCC AS) initiate the transfer request to this target voice session, at described target voice Session Hand-off after CS territory, by Mobile Switching Center Server (MSC Server), replace UE, to SCC AS, initiate the transfer to other voice conversations, other voice conversations are transferred to CS territory, thereby complete the transfer to all sessions of UE, if UE only includes a video session (comprising the session of audio medium stream and video media stream) simultaneously, UE initiates the transfer to this video session to SCC AS, and described video session is transferred to CS territory.
In realizing process of the present invention, inventor's discovery, it is a kind of when UE comprises video session and voice conversation simultaneously that prior art does not provide, the method how session of UE being shifted, make simultaneously when UE comprises voice conversation and video session, cannot shift the session of UE.
Summary of the invention
Embodiments of the invention provide a kind of session transferring method and subscriber equipment, can, when subscriber equipment comprises voice conversation and video session simultaneously, the session of subscriber equipment be shifted.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A session transferring method, comprising: when the session of subscriber equipment is transferred to circuit commutative field from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, determine the session of state of activation from described video session and voice conversation; The transfer of initiation to described state of activation session, so that network side shifts the Session Hand-off of described state of activation to circuit commutative field and to the session of unactivated state in described video session and voice conversation.
A subscriber equipment, comprising:
Determining unit while transferring to circuit commutative field for the session when described subscriber equipment from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, is determined the session of state of activation from described video session and voice conversation;
Buanch unit, for initiating the transfer to the definite state of activation session of described determining unit, so that network side shifts the Session Hand-off of described state of activation to circuit commutative field and to the session of unactivated state in described video session and voice conversation.
The session transferring method that the embodiment of the present invention provides and subscriber equipment, can from the video session of subscriber equipment and voice conversation, determine the session of state of activation, and the transfer of initiation to this state of activation session, make the network side can be by the Session Hand-off of described state of activation to circuit commutative field, and the session of unactivated state is shifted, thereby reached when subscriber equipment comprises video session and voice conversation simultaneously, the object that the session of subscriber equipment is shifted, solved prior art when subscriber equipment comprises video session and voice conversation simultaneously, the problem that cannot shift the session of subscriber equipment.
Embodiments of the invention also provide a kind of session transferring method and subscriber equipment, can, when subscriber equipment exists voice conversation and video session simultaneously, the session of subscriber equipment be shifted.
A kind of session transferring method, comprise: when the session of subscriber equipment is transferred to circuit commutative field from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, from described video session and voice conversation, determine the session of state of activation and the session of unactivated state; Discharge the session of described unactivated state; The transfer of initiation to described state of activation session so that network side by the Session Hand-off of described state of activation to circuit commutative field.
A subscriber equipment, comprising:
Determining unit, for when the session of described subscriber equipment is transferred to circuit commutative field from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, from described video session and voice conversation, determine the session of state of activation and the session of unactivated state;
Releasing unit, for discharging the session of the definite unactivated state of described determining unit;
Buanch unit, for initiating the transfer to the definite state of activation session of described determining unit so that network side by the Session Hand-off of described state of activation to circuit commutative field.
The session transferring method that the embodiment of the present invention provides and subscriber equipment, when the video session of subscriber equipment and voice conversation are shifted, the session of unactivated state in described video session and voice conversation is discharged, and the transfer of initiation to state of activation session, make the network side can be by described state of activation Session Hand-off to circuit commutative field, thereby reached when subscriber equipment comprises video session and voice conversation simultaneously, the object that the session of subscriber equipment is shifted, solved prior art when subscriber equipment comprises video session and voice conversation simultaneously, the problem that cannot shift the session of subscriber equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The session transferring method flow chart that Fig. 1 provides for the embodiment of the present invention;
The flow chart of step 102 in the session transferring method that Fig. 2 provides for the embodiment of the present invention shown in Fig. 1;
Fig. 3 executes the session transferring method sequential chart that example 1 provides for the present invention;
Fig. 4 executes the sequential chart of step 302 in the session transferring method that example 1 provides for the present invention shown in Fig. 3;
Fig. 5 executes the sequential chart of step 305 in the session transferring method that example 1 provides for the present invention shown in Fig. 3;
Fig. 6 executes the session transferring method sequential chart that example 3 provides for the present invention;
Fig. 7 executes the sequential chart of step 602 in the session transferring method that example 3 provides for the present invention shown in Fig. 6;
Fig. 8 executes the sequential chart of step 605 in the session transferring method that example 3 provides for the present invention shown in Fig. 6;
The user device architecture schematic diagram one that Fig. 9 provides for the embodiment of the present invention;
The user device architecture schematic diagram two that Figure 11 provides for the embodiment of the present invention;
The structural representation of converting unit 903 in the subscriber equipment that Figure 12 provides for the inventive embodiments shown in Figure 11;
The session transferring method sequential chart that Figure 13 provides for the embodiment of the present invention;
The user device architecture schematic diagram that Figure 14 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In order to solve when UE comprises voice conversation and video session simultaneously, cannot carry out the problem of Session Hand-off, the embodiment of the present invention provides a kind of session transferring method and subscriber equipment.
As shown in Figure 1, the session transferring method that the embodiment of the present invention provides, when UE transfers to CS territory from PS territory, if described UE comprises video session and voice conversation, comprising:
Further, as shown in Figure 2, described step 102 can comprise:
By sending a CS territory setup requests to network side, network side can be called out for UE sets up CS territory, STN according to carrying in a CS territory setup requests, shifts the Session Hand-off of state of activation to CS territory and to the session of unactivated state in video session and voice conversation.
In the present embodiment, the relevant information of described application CS territory transmission bearer can comprise: the multimedia carrying in application CS territory and the information of voice bearer, and to indicate described multimedia carrying or voice bearer be the indication information of current transmission bearer (or preferred transmission bearer); Or, the information of the multimedia carrying in application CS territory; Or, the information of the voice bearer in application CS territory.For example: if the equal supporting business change of UE and network side and multimedia call fall (Service Change and UDI/RDI Fallback after rise, SCUDIF) characteristic, or UE does not know whether network side supports SCUDIF characteristic, the relevant information of described application CS territory transmission bearer comprises: the multimedia carrying in application CS territory and the information of voice bearer, and to indicate described multimedia carrying or voice bearer be the indication information of current transmission bearer (or preferred transmission bearer); And for example: if UE and/or network side are not supported SCUDIF characteristic, and video session be state of activation session, the information of the multimedia carrying that relevant information of described application CS territory transmission bearer is application CS territory; For another example: if UE and/or network side are not supported SCUDIF characteristic, and the voice conversation session that is state of activation, the relevant information of described application CS territory transmission bearer is the information of the voice bearer in application CS territory.
Alternatively, after described step 102, can also be included in CS territory, the step that video session and voice conversation are carried out to session status conversion, can comprise:
1, the session that is state of activation when video session, when voice conversation is nonactivated session:
If the transmission bearer to network side application to CS territory is multimedia carrying and voice bearer, indication voice are carried as current carrying, use the Media Stream of voice bearer transferring voice session; And/or
If the transmission bearer to network side application to CS territory is multimedia carrying, use the Media Stream of the transferring voice session of multimedia carrying.Further, for fear of insignificant coding and decoding video operation, when using the Media Stream of multimedia carrying transferring voice session, the video channel of this multimedia carrying can be closed.
2, the session that is unactivated state when video session, during session that voice conversation is state of activation:
If the transmission bearer to network side application to CS territory is multimedia carrying and voice bearer, indication multimedia is carried as current carrying, carries out coding negotiation with network side, uses the Media Stream of multimedia carrying transmission of video session; And/or
If the transmission bearer to network side application to CS territory is voice bearer, call out in the CS territory that discharges support voice carrying, sets up and support the CS territory of multimedia carrying to call out, and uses the Media Stream of multimedia carrying transmission of video session.
Alternatively, before described step 102, can also comprise: the video media stream of deleting video session.
By the video media stream of video session is deleted, video session can be changed into voice conversation, in follow-up Session Hand-off process, can adopt the method to more voice Session Hand-off, realize the object that the session of UE is shifted.
The session transferring method that the embodiment of the present invention provides, can from the video session of UE and voice conversation, determine the session of state of activation, and the transfer of initiation to this state of activation session, make the network side can be by the Session Hand-off of state of activation to circuit commutative field, and the session of unactivated state is shifted, thereby reached when UE comprises video session and voice conversation simultaneously the object that the session of UE is shifted.
In order to make those skilled in the art can more clearly understand the technical scheme that the embodiment of the present invention provides, below by specific embodiment, the session transferring method that the embodiment of the present invention is provided is elaborated.
Embodiment 1:UE transfers to CS territory from PS territory, and UE comprises the voice conversation of video session and a unactivated state of a state of activation, and UE and network side are all supported SCUDIF characteristic.
As shown in Figure 3, the session transferring method that the embodiment of the present invention provides, comprising:
Step 301, UE determines that video session is state of activation.
In the present embodiment, UE has stored session state information, can determine that video session is state of activation according to described session state information.
Step 302, UE initiates the transfer to video session to network side, so that network side is transferred to CS territory by video session.
As shown in Figure 4, described step 302 can comprise:
Step 401-403, UE is by MSC Server and service call conversation control function (Serving-Call Session Control Function, S-CSCF) to SCC AS, send a CS territory setup requests, carry the relevant information of STN and application circuit commutative field transmission bearer.
In the present embodiment, UE and network side are all supported SCUDIF characteristic, the relevant information of described application circuit commutative field transmission bearer comprises the information of the carrying of application multimedia and voice bearer, and indicates the indication information that current transmission bearer (or preferred transmission bearer) is multimedia carrying.
Step 404, SCC AS waits for that H.245 coding negotiation completes.
Step 405-410, SCC AS and UE confirm, completes and set up CS territory access tributary (access leg) for video session.
Step 411, UE and MSC Server carry out the H.245 coding negotiation in CS territory.
Step 412 and 413, after UE and MSC Server complete the H.245 coding negotiation in CS territory, MSC Server sends and has H.245 consulted indication to SCC AS.
Step 414, SCCAS is used CS territory access tributary to upgrade remote branch (remote leg), and wherein, described remote branch is the access tributary between the opposite end of video session of SCC AS and UE.
Step 415 and 416, SCC AS send H.245 coding negotiation to MSC Server and complete indication response.
Step 417, UE and MSC Server are used the Media Stream (comprising audio medium stream and video media stream) of described multimedia carrying transmission of video session, complete the transfer to video session.
Step 303, the transfer to voice conversation is initiated and completed to network side, comprising:
1, SCC AS sends video session to MSC Server and shifts response, the session state information of carrying voice conversation in this transfer response, also may send the session state information of voice conversation by SCC AS to MSCServer by subscribe/notification mechanism;
In the present embodiment, session state information can comprise session status (inactive), Session Hand-off sign (Session Transfer Identifier, STI) and conversation media stream (audio medium stream) etc.
2, MSC Server, according to described session state information, initiates and completes the transfer to voice conversation to SCC AS, comprising:
MSC Server sends Invite request to SCC AS, and the STI of voice conversation is carried in this Invite request;
SCC AS completes and sets up CS territory access tributary for described voice conversation, and upgrades the remote branch of described voice conversation, completes voice conversation and shifts.
Step 304, after the session (video session and voice conversation) of UE has been shifted, discharges the PS territory access tributary of session (video session and the voice conversation) foundation that is originally UE.
Alternatively, step 305, in CS territory, carries out session status conversion to video session and voice conversation.
In the present embodiment, video session is state of activation, and voice conversation is unactivated state, and described video session and voice conversation are carried out to state conversion, video session is converted to unactivated state that is:, and voice conversation is converted to state of activation.
As shown in Figure 5, step 305 can comprise:
Step 501-503, UE sends video session to SCC AS and hangs up (hold) request, in this request, carry the Transaction Identifier (Transaction identify, TI) of video session association, SCC AS hangs up by video the opposite end that request sends to UE video session.
Step 504, UE sends voice conversation to MSC Server and recovers (resume) request, carries the Transaction Identifier (Transaction identify, TI) of voice conversation in this request.
Step 505, UE sends change message (modify) to MSC Server, indication voice bearer is set to current carrying, the media capability that is about to call out in CS territory changes to support voice transmission (media capability support voice and the video that before state conversion, call out in CS territory transmit simultaneously), uses the Media Stream of voice bearer transferring voice session.
In actual use procedure, described step 505 also can be initiated by network side, does not repeat herein.
Step 506 and 507, MSC Server send voice conversation recovery request to SCC AS, and SCC AS sends to this request the opposite end of UE voice conversation, complete the state conversion of video session and voice conversation.
Alternatively, in the present embodiment, before described step 302, can also comprise: the video media stream of deleting video session.
By the video media stream of video session is deleted, video session can be changed into voice conversation, in follow-up Session Hand-off process, can adopt the method to more voice Session Hand-off, the object that realization is shifted the session of UE, now, the technical scheme that the embodiment of the present invention provides does not comprise step 305.
Embodiment 2:UE transfers to CS territory from PS territory, and UE comprises the voice conversation of video session and a unactivated state of a state of activation, and UE and/or network side are not supported SCUDIF characteristic.
The step of the present embodiment and enforcement 1 is as shown in Figure 3 basic identical, and its distinctive points is:
At UE, to network side, initiate the transfer to video session, so that network side is transferred to video session in the process in CS territory, because UE and/or network side are not supported SCUDIF characteristic, so the relevant information of described application circuit commutative field transmission bearer is the information of application multimedia carrying;
In CS territory, when video session and voice conversation are carried out to session status conversion, UE is used the Media Stream of multimedia carrying transferring voice session; Alternatively, between UE and MSC Server, can pass through H.245 Signalling exchange, the video channel of described multimedia carrying is closed, thereby avoid UE to do coding and decoding video operation, the communication resource of waste UE.
Embodiment 3:UE transfers to CS territory from PS territory, and UE comprises the voice conversation of video session and a state of activation of a unactivated state, and UE and network side are all supported SCUDIF characteristic.
As shown in Figure 6, the session transferring method that the embodiment of the present invention provides, comprising:
Step 601, UE determines that voice conversation is state of activation.
In the present embodiment, session state information that UE is pre-stored, can determine that voice conversation is state of activation according to described session state information.
Step 602, UE initiates the transfer to voice conversation to network side, so that network side is transferred to CS territory by voice conversation.
As shown in Figure 7, described step 602 can comprise:
Step 701-703, UE is by MSC Server and service call conversation control function (Serving-Call Session Control Function, S-CSCF) to SCC AS, send a CS territory setup requests, carry the relevant information of STN and application circuit commutative field transmission bearer.
In the present embodiment, UE and network side are all supported SCUDIF characteristic, the relevant information of described application circuit commutative field transmission bearer comprises the information of application multimedia carrying and voice bearer, and to indicate current transmission bearer (or preferred transmission bearer) be the indication information of voice bearer.
Step 704, SCC AS completes and sets up CS territory access tributary (access leg) for voice conversation, and upgrades remote branch, and wherein, described remote branch is the access tributary between SCC AS and the opposite end of video session.
Step 705, UE and MSC Server are used the Media Stream (audio medium stream) of described voice bearer transferring voice session, complete the transfer to voice conversation.
Step 603, the transfer to video session is initiated and completed to network side, comprising:
1, SCC AS sends to shift to MSC Server and replys, and the session state information of video session is carried in this transfer in replying;
In the present embodiment, session state information can comprise session status (inactive), Session Hand-off sign (Session Transfer Identifier, STI) and conversation media stream (audio medium stream and video media stream) etc.
2, MSC Server, according to described session state information, initiates and completes the transfer to unactivated state session to SCC AS.
MSC Server sends Invite request to SCC AS, and the STI of video session is carried in this Invite request;
SCC AS waits for H.245 coding negotiation, and after having consulted, and completes and sets up CS territory access tributary for described video session;
After UE and MSC Server complete and H.245 consult in CS territory, SCC AS upgrades the remote branch of described video session, completes video session and shifts.
Step 604, after the session (video session and voice conversation) of UE has been shifted, discharges the PS territory access tributary of session (video session and the voice conversation) foundation that is originally UE.
Alternatively, step 605, in CS territory, carries out session status conversion to described video session and voice conversation.
In the present embodiment, video session is unactivated state, and voice conversation is state of activation, and described video session and voice conversation are carried out to state conversion, video session is converted to state of activation that is:, and voice conversation is converted to unactivated state.
As shown in Figure 8, step 605 can comprise:
Step 801-803, UE sends voice conversation to SCC AS and hangs up (hold) request, carries the T of voice conversation association in this request), SCC AS hangs up by voice the opposite end that (hold) request sends to UE voice conversation.
Step 804, UE sends video session to MSC Server and recovers (resume) request, carries the TI of video session in this request.
Step 805, UE sends change (modify) message to MSC Server, the carrying of indication multimedia is set to current carrying, that is: the media capability of CS territory being called out changes to support voice and transmission of video (the media capability support voice transmission that before state conversion, call out in CS territory).
In actual use procedure, described step 805 also can be initiated by network side, does not repeat herein.
Step 806, UE and MSC Server carry out the H.245 coding negotiation in CS territory, after having consulted, use the Media Stream of multimedia carrying transmission of video session.
Step 807 and 808, MSC Server send voice conversation recovery request to SCC AS, and SCC AS sends to this request the opposite end of UE video session, complete the state conversion of video session and voice conversation.
Alternatively, in the present embodiment, before described step 602, can also comprise: the video media stream of deleting video session.
By the video media stream of video session is deleted, video session can be changed into voice conversation, in follow-up Session Hand-off process, can adopt the method to more voice Session Hand-off, the object that realization is shifted the session of UE, now, the technical scheme that the embodiment of the present invention provides does not comprise step 605.
Embodiment 4:UE transfers to CS territory from PS territory, and UE comprises the voice conversation of video session and a state of activation of a unactivated state, and UE and/or network side are not supported SCUDIF characteristic.
The step of the present embodiment and enforcement 3 is as shown in Figure 6 basic identical, and its distinctive points is:
At UE, to network side, initiate the transfer to voice conversation, so that network side is transferred to voice conversation in the process in CS territory, because UE and/or network side are not supported SCUDIF characteristic, so the relevant information of described application circuit commutative field transmission bearer is the information of application voice bearer;
In CS territory, when video session and voice conversation are carried out to session status conversion, UE and MSC Server discharge the CS territory of support voice carrying and call out, and set up and support the CS territory of multimedia carrying to call out, UE is used the Media Stream (video media stream and audio medium stream) of multimedia carrying transmission of video session.
In the present embodiment, described UE and MSC Server set up and support the CS territory of multimedia carrying to call out, and UE is used the step of the Media Stream of multimedia carrying transmission of video session to comprise:
To network side, send the 2nd CS territory setup requests, the 2nd CS territory setup requests is carried the information of the multimedia carrying of applying for circuit commutative field and is redialed (redial) sign, in the present embodiment, this redial (redial) sign can make MSC Server that described the 2nd CS territory call request and a CS territory call request are distinguished; Obtain the multimedia carrying in the CS territory of network side distribution; After the 2nd CS territory call setup completes, use the Media Stream of the described video session of multimedia carrying transmission of described CS.
What deserves to be explained is, in the present embodiment, the voice conversation that UE sends to MSC Server is hung up request and video session recovery request, is combined to MSC Server indication the CS territory that discharges support voice carrying is called out, and set up and support the CS territory of multimedia carrying to call out.
The session transferring method that the embodiment of the present invention provides, can from the video session of UE and voice conversation, determine the session of state of activation, and the transfer of initiation to this state of activation session, make the network side can be by the Session Hand-off of described state of activation to CS territory, and the session of unactivated state is shifted, thereby reached when UE comprises video session and voice conversation simultaneously the object that the session of UE is shifted.
As shown in Figure 9, the embodiment of the present invention also provides a kind of subscriber equipment, comprising:
Determining unit 901 while transferring to circuit commutative field for the session when described subscriber equipment from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, is determined the session of state of activation from described video session and voice conversation;
Further, as shown in figure 10, described buanch unit 902 can comprise:
First sends subelement 9021, and for send the first circuit commutative field setup requests to network side, this first circuit commutative field setup requests is carried the relevant information of Session Hand-off number and application circuit commutative field transmission bearer;
Obtain subelement 9022, for obtaining the transmission bearer of the circuit commutative field of network side distribution;
Transmission subelement 9023, for after the first circuit commutative field call setup completes, is used the transmission bearer of described circuit commutative field to transmit the Media Stream of described state of activation session.
Further, as shown in figure 11, described subscriber equipment, can also comprise:
Converting unit 903, at circuit commutative field, carries out session status conversion to described voice conversation and video session.
Further, as shown in figure 12, described converting unit 903 can comprise following one or more subelement:
The first conversion subelement 9031, for the session that is state of activation when described video session, described voice conversation is nonactivated session, and when the transmission bearer to network side application to circuit commutative field is multimedia carrying and voice bearer, indicating described voice bearer is current carrying, uses described voice bearer to transmit the Media Stream of described voice conversation;
The second conversion subelement 9032, for the session that is state of activation when described video session, described voice conversation is nonactivated session, and the transmission bearer to network side application to circuit commutative field is multimedia when carrying, uses the Media Stream of the described voice conversation of described multimedia carrying transmission;
The 3rd conversion subelement 9033, for the session that is unactivated state when described video session, described voice conversation is the session of state of activation, and when the transmission bearer to network side application to circuit commutative field is multimedia carrying and voice bearer, indicate described multimedia to be carried as current carrying, carry out coding negotiation with network side, use the Media Stream of the described video session of described multimedia carrying transmission;
The 4th conversion subelement 9034, for the session that is unactivated state when described video session, described voice conversation is the session of state of activation, and when the transmission bearer to network side application to circuit commutative field is voice bearer, discharge and support the circuit commutative field of described voice bearer to call out, set up and support the circuit commutative field of multimedia carrying to call out, use the Media Stream of the described video session of described multimedia carrying transmission.
Further, as shown in figure 11, described subscriber equipment, can also comprise:
Described in the session transferring method that the concrete methods of realizing of the subscriber equipment that the embodiment of the present invention provides can provide referring to the embodiment of the present invention, repeat no more herein.
The subscriber equipment that the embodiment of the present invention provides, can from video session and voice conversation, determine the session of state of activation, and the transfer of initiation to this state of activation session, make the network side can be by the Session Hand-off of described state of activation to circuit commutative field, and the session of unactivated state is shifted, thereby reached when subscriber equipment comprises video session and voice conversation simultaneously, the object that session is shifted, solved prior art when subscriber equipment comprises video session and voice conversation simultaneously, the problem that cannot shift the session of subscriber equipment.
In order to solve when UE comprises voice conversation and video session simultaneously, cannot carry out the problem of Session Hand-off, the embodiment of the present invention provides a kind of session transferring method and subscriber equipment.
As shown in figure 13, the session transferring method that the embodiment of the present invention provides, when UE transfers to CS territory from PS territory, if described UE comprises video session and voice conversation, comprising:
Step 1301 is determined the session of state of activation and the session of unactivated state from described video session and voice conversation;
Step 1302, discharges the session of described unactivated state;
Step 1303, initiates the transfer to described state of activation session so that network side by the Session Hand-off of described state of activation to CS territory.
The session transferring method that the embodiment of the present invention provides, when the video session of UE and voice conversation are shifted, the session of unactivated state in described video session and voice conversation is discharged, and the transfer of initiation to state of activation session, make the network side can be by described state of activation Session Hand-off to CS territory, thereby reached when UE comprises video session and voice conversation simultaneously, the object that the session of UE is shifted, solved prior art when UE comprises video session and voice conversation simultaneously, the problem that cannot shift the session of UE.
As shown in figure 14, the embodiment of the present invention also provides a kind of subscriber equipment, comprising:
Determining unit 1401, for when the session of described subscriber equipment is transferred to circuit commutative field from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, from described video session and voice conversation, determine the session of state of activation and the session of unactivated state;
Releasing unit 1402, for discharging the session of the definite unactivated state of described determining unit 1301;
The subscriber equipment that the embodiment of the present invention provides, when video session and voice conversation are shifted, the session of unactivated state in described video session and voice conversation is discharged, and the transfer of initiation to state of activation session, make the network side can be by described state of activation Session Hand-off to circuit commutative field, thereby reached when subscriber equipment comprises video session and voice conversation simultaneously, the object that the session of subscriber equipment is shifted, solved prior art when subscriber equipment comprises video session and voice conversation simultaneously, the problem that cannot shift the session of subscriber equipment.
In sum, the embodiment of the present invention provides session transferring method and subscriber equipment can be applied in wireless communication system.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is to come the hardware that instruction is relevant to complete by program, described program can be stored in a computer-readable recording medium, as ROM/RAM, magnetic disc or CD etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection range with claim.
Claims (6)
1. a session transferring method, is characterized in that, comprising:
When the session of subscriber equipment is transferred to circuit commutative field from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, from described video session and voice conversation, determine the session of state of activation;
The transfer of initiation to described state of activation session, so that network side shifts the Session Hand-off of described state of activation to circuit commutative field and to the session of unactivated state in described video session and voice conversation;
In circuit commutative field, described video session and voice conversation are carried out to session status conversion;
Describedly described video session and voice conversation carried out to session status conversion comprise:
When the session that is state of activation of described video session, described voice conversation is nonactivated session, and when the transmission bearer to network side application to circuit commutative field is multimedia carrying and voice bearer, indicating described voice bearer is preferred transmission bearer, uses described voice bearer to transmit the Media Stream of described voice conversation; And/or,
When the session that described video session is state of activation, described voice conversation is nonactivated session, and the transmission bearer to network side application to circuit commutative field is multimedia when carrying, uses the Media Stream of the described voice conversation of described multimedia carrying transmission; And/or,
When the session that is unactivated state of described video session, described voice conversation is the session of state of activation, and when the transmission bearer to network side application to circuit commutative field is multimedia carrying and voice bearer, indicate described multimedia to be carried as preferred transmission bearer, carry out coding negotiation with network side, use the Media Stream of the described video session of described multimedia carrying transmission; And/or
When the session that is unactivated state of described video session, described voice conversation is the session of state of activation, and when the transmission bearer to network side application to circuit commutative field is voice bearer, discharge and support the circuit commutative field of described voice bearer to call out, set up and support the circuit commutative field of multimedia carrying to call out, use the Media Stream of the described video session of described multimedia carrying transmission.
2. method according to claim 1, is characterized in that, described initiation comprises the transfer of described state of activation session:
To network side, send the first circuit commutative field setup requests, this first circuit commutative field setup requests is carried the relevant information of Session Hand-off number and application circuit commutative field transmission bearer;
Obtain the transmission bearer of the circuit commutative field of network side distribution;
After the first circuit commutative field call setup completes, use the transmission bearer of described circuit commutative field to transmit the Media Stream of described state of activation session;
The relevant information of described application circuit commutative field transmission bearer comprises: the multimedia carrying of application circuit commutative field and the information of voice bearer, and to indicate described multimedia carrying or voice bearer be the indication information of current transmission bearer or preferred transmission bearer; Or, the information of the multimedia carrying of application circuit commutative field; Or, the information of the voice bearer of application circuit commutative field.
3. method according to claim 1 and 2, is characterized in that, if use the Media Stream of described multimedia carrying transferring voice session, also comprises: the video channel of closing described multimedia carrying.
4. method according to claim 1 and 2, is characterized in that, described foundation supports the circuit commutative field of multimedia carrying to call out, and uses the Media Stream of the described video session of described multimedia carrying transmission to comprise:
To network side, send second circuit switching domain setup requests, this second circuit switching domain setup requests is carried the information of the multimedia carrying of applying for circuit commutative field and is redialed sign;
Obtain the multimedia carrying of the circuit commutative field of network side distribution;
After second circuit switching domain call setup completes, use the Media Stream of the described video session of multimedia carrying transmission of described circuit commutative field.
5. a subscriber equipment, is characterized in that, comprising:
Determining unit while transferring to circuit commutative field for the session when described subscriber equipment from packet-switched domain, if described subscriber equipment comprises video session and voice conversation, is determined the session of state of activation from described video session and voice conversation;
Buanch unit, for initiating the transfer to the definite state of activation session of described determining unit, so that network side shifts the Session Hand-off of described state of activation to circuit commutative field and to the session of unactivated state in described video session and voice conversation;
Converting unit, at circuit commutative field, carries out session status conversion to described voice conversation and video session;
Described converting unit comprises following at least one subelement:
The first conversion subelement, for the session that is state of activation when described video session, described voice conversation is nonactivated session, and when the transmission bearer to network side application to circuit commutative field is multimedia carrying and voice bearer, indicating described voice bearer is preferred transmission bearer, uses described voice bearer to transmit the Media Stream of described voice conversation;
The second conversion subelement, for the session that is state of activation when described video session, described voice conversation is nonactivated session, and the transmission bearer to network side application to circuit commutative field is multimedia when carrying, uses the Media Stream of the described voice conversation of described multimedia carrying transmission;
The 3rd conversion subelement, for the session that is unactivated state when described video session, described voice conversation is the session of state of activation, and when the transmission bearer to network side application to circuit commutative field is multimedia carrying and voice bearer, indicate described multimedia to be carried as preferred transmission bearer, carry out coding negotiation with network side, use the Media Stream of the described video session of described multimedia carrying transmission;
The 4th conversion subelement, for the session that is unactivated state when described video session, described voice conversation is the session of state of activation, and when the transmission bearer to network side application to circuit commutative field is voice bearer, discharge and support the circuit commutative field of described voice bearer to call out, set up and support the circuit commutative field of multimedia carrying to call out, use the Media Stream of the described video session of described multimedia carrying transmission.
6. subscriber equipment according to claim 5, is characterized in that, described buanch unit comprises:
First sends subelement, for sending the first circuit commutative field setup requests to network side, this the first circuit commutative field setup requests is carried the relevant information of Session Hand-off number and application circuit commutative field transmission bearer, the relevant information of described application circuit commutative field transmission bearer comprises: the multimedia carrying of application circuit commutative field and the information of voice bearer, and to indicate described multimedia carrying or voice bearer be the indication information of current transmission bearer or preferred transmission bearer; Or, the information of the multimedia carrying of application circuit commutative field; Or, the information of the voice bearer of application circuit commutative field;
Obtain subelement, for obtaining the transmission bearer of the circuit commutative field of network side distribution;
Transmission subelement, for after the first circuit commutative field call setup completes, is used the transmission bearer of described circuit commutative field to transmit the Media Stream of described state of activation session.
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| CN201110302025.3A CN102333292B (en) | 2009-05-05 | 2009-05-05 | Conversation transfer method and user equipment |
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