CN101883443A - Method and device for realizing SIP session transfer - Google Patents
Method and device for realizing SIP session transfer Download PDFInfo
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- CN101883443A CN101883443A CN2009101376995A CN200910137699A CN101883443A CN 101883443 A CN101883443 A CN 101883443A CN 2009101376995 A CN2009101376995 A CN 2009101376995A CN 200910137699 A CN200910137699 A CN 200910137699A CN 101883443 A CN101883443 A CN 101883443A
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Abstract
The invention discloses a method and a device for realizing SIP session transfer. The method comprises the following steps: media information required to be transferred is obtained by a session transfer sender; and a session transfer request is started, and the media information required to be transferred is carried in the session transfer request so that a session transfer receiver establishes a transfer service according to the media information required to be transferred. By using the invention, the transfer of all or part of the media streams is performed according to wish of the client, thereby meeting the requirements in various occasions and enriching IPTV experience of the client.
Description
Technical field
The present invention relates to mobile communication technology, be specifically related to the method and apparatus that a kind of SIP of realization session is shifted.
Background technology
IPTV (Internet Protocol Television, television broadcasting service based on the IP agreement) is a kind of broadband cabled television network that utilizes, integrate multiple technologies such as the Internet, multimedia, communication, the brand-new technology of the multiple interactive services that comprises Digital Television is provided to the domestic consumer.The user can use PC or network machine top box+general television set mode to enjoy the IPTV business at home, also can enjoy the IPTV business by portable terminal.IPTV uses TCP/IP (Transmission Control Protocol/Internet Protocol, transmission control protocol/internet protocol) carries out clean culture, broadcasting or group broadcasting video frequency business as bearing protocol, effectively television network, three fields of telephone network and the Internet are combined, be the most representative business of the integration of three networks, just be subjected to industry and more and more paying close attention to.
At present, in each big IPTV standard, all can't realize the transfer service of conversation media stream.
Summary of the invention
The method and apparatus that the embodiment of the invention provides a kind of SIP of realization session to shift is to realize the transfer of Media Stream in the SIP session.
The method that the embodiment of the invention provides a kind of SIP of realization session to shift comprises:
The media information that transmit leg obtains needs transfer is shifted in session;
The initiation session transfer request is carried the media information that needs transfer in the described session transfer request, set up transfer service so that the recipient is shifted in session according to the media information that described needs shift.
The method that the embodiment of the invention provides a kind of SIP of realization session to shift comprises:
Session is shifted the recipient and is received session transfer request, carries the media information that needs transfer in the described session transfer request;
According to the information of carrying in the described session transfer request, obtain to set up the required information of transfer service;
Utilize the required information of transfer service of setting up that obtains to set up transfer service.
The embodiment of the invention provides a kind of subscriber equipment, comprising:
The media information acquiring unit is used to obtain the media information that needs shift;
Information transmitting unit is used for the initiation session transfer request, carries the media information that needs transfer in the described session transfer request.
The embodiment of the invention provides a kind of subscriber equipment, comprising:
The request receiving element is used to receive session transfer request, carries the media information that needs transfer in the described session transfer request;
The business information acquiring unit is used for the information of carrying according to described session transfer request, obtains to set up the required information of transfer service;
Business is set up the unit, is used to utilize the required information of transfer service of setting up of acquisition to set up transfer service.
The embodiment of the invention provides a kind of operation controlling entity, comprising: receiving element, granted unit;
Described receiving element is used to receive session and shifts the session transfer request that transmit leg sends, and carries the media information that needs transfer in the described session transfer request;
Described granted unit is used for determining whether described session transfer transmit leg has the session transfer rights;
Described operation controlling entity also comprises:
The unit is set up in session, is used for after described granted unit determines that transmit leg has the session transfer rights, sets up process according to the media information active initiation session that described needs shift; Perhaps,
Transmitting element is used for after described granted unit determines that transmit leg has the session transfer rights, shifts the recipient to session and sends session transfer request, carries the media information that needs transfer in the described session transfer request.
The method and apparatus that the realization SIP session that the embodiment of the invention provides is shifted, session is shifted transmit leg when needs carry out the session transfer, send session transfer request, and in described session transfer request, carry the media information that needs transfer, so that shifting the recipient, session sets up transfer service according to the media information that described needs shift.Like this, shift the recipient, after receiving session transfer request,, obtain to set up the required information of transfer service, utilize the required information of transfer service of setting up that obtains to set up transfer service then according to the information of carrying in the described session transfer request for session.Thereby can realize carrying out the transfer of all or part of Media Stream, thereby can satisfy various scene demands that the IPTV that enriches the user experiences according to user intention.
Description of drawings
Fig. 1 is the flow chart that the present invention realizes method first embodiment that the SIP session is shifted;
Fig. 2 is the flow chart that the present invention realizes method second embodiment that the SIP session is shifted;
Fig. 3 is that the embodiment of the invention realizes a kind of message flow chart of method in concrete application that the SIP session is shifted;
Fig. 4 is that the embodiment of the invention realizes the another kind of message flow chart of method in concrete application that the SIP session is shifted;
Fig. 5 is that the embodiment of the invention realizes the another kind of message flow chart of method in concrete application that the SIP session is shifted;
Fig. 6 is that the embodiment of the invention realizes the another kind of message flow chart of method in concrete application that the SIP session is shifted;
Fig. 7 is a kind of structural representation of embodiment of the invention subscriber equipment;
Fig. 8 is the another kind of structural representation of embodiment of the invention subscriber equipment;
Fig. 9 is a kind of structural representation of embodiment of the invention operation controlling entity;
Figure 10 is the another kind of structural representation of embodiment of the invention operation controlling entity.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is described in further detail below in conjunction with drawings and embodiments.
The embodiment of the invention realizes the method that the SIP session is shifted, the media information that transmit leg obtains needs transfer is shifted in session, the initiation session transfer request, carry the media information that needs transfer in the described session transfer request, set up transfer service according to the media information that described needs shift so that the recipient is shifted in session.Like this, shift the recipient, after receiving session transfer request,, obtain to set up the required information of transfer service, utilize the required information of transfer service of setting up that obtains to set up transfer service then according to the information of carrying in the described session transfer request for session.Particularly, the session transfer request that session transfer recipient receives can shift transmit leg from session and receive, and also can be to be received after the session transfer request of transmit leg transmission is shifted in session by operation controlling entity to send.Correspondingly, need the process of setting up of the session of transfer to shift recipient's initiation, also can initiate by operation controlling entity by session.
Because IMS (IP Multimedia Subsystem, IP Multimedia System) is the subsystem of the support IP multimedia service that in Release 5 versions, proposes of 3GPP (3rdGeneration Partnership Project, 3rd Generation Partnership Project).IMS is an IP-based standards system that is independent of access technology, and it and existing voice and data network can intercommunications.No matter be fixed network users, PSTN (Public Switched Telephone Network for example, PSTN), ISDN (Integrated Services Digital Network, integrated services digital network), internet, or mobile subscriber, for example GSM (Global System for Mobile Communications, global system for mobile communications), CDMA (Code Division Multiple Access, code division multiple access).The system of IMS makes can set up reciprocity IP communication by various types of clients, and can obtain needed service quality.Except that session management, the IMS system also relates to the service finished provides necessary function, for example registration, safety, charging, carrying control, roaming etc.Therefore, be example with IPTV below based on the IMS system, the embodiment of the invention is elaborated.Certainly, the method for embodiment of the invention realization SIP session transfer is not limited in and is applied to this network environment.
From UE (User Equipment, subscriber equipment) side and network side the embodiment of the invention is realized that the method that session is shifted is elaborated respectively below.
With reference to Fig. 1, be the flow chart that the present invention realizes method first embodiment that the SIP session is shifted, may further comprise the steps:
Step 101, the media information that transmit leg obtains needs transfer is shifted in session.
Step 102, the initiation session transfer request is carried the media information that needs transfer in the described session transfer request, set up transfer service so that the recipient is shifted in session according to the media information that described needs shift.
Described session transfer request can be a sip message, such as being message (notice) message, refer (submission) message among the SIP etc.Certainly, also can realize by newly-increased sip message.
Go back portability following any one or multiple parameters in the described session transfer request:
ST (Session Transfer, session is shifted) the message indication, because if adopt SIP (Session Initiation Protocal, Session initiation Protocol) message, then need to make a distinction, can indicate by this ST message and indicate with other sip message.
STI (Session Transfer Identifier, sign is shifted in session) is used to identify the session that needs shift.
The recipient is shifted in session.
The branch mode indication comprises and duplicates or substitute, and is used to show the session that whether continues to keep shifting with session transmit leg after session is shifted, if duplicate, the session that needs to continue to keep shifting with session transmit leg after then session is shifted if substitute, does not then need.
Indication is shifted in session, and promptly part shifts or all shifts indication, is used to show whole service is shifted or certain Media Stream is shifted.
The media information that needs transfer by SDP (Session Description Protocol, Session Description Protocol) expression, if all shift, and has had the indication of whole transfers, and this parameter can be set.If part shifts, then need to use this parameter to show the media information that the user need shift.
Content identification and side-play amount, the content identification and the side-play amount of the ongoing business of expression user.
Need to prove that in concrete the application, the branch mode of the session of Zhuan Yiing is for substituting if desired, after then session was shifted and finished, transmit leg is shifted in session also needed to remove corresponding session.Particularly, can remove session according to the notice of operation controlling entity; Perhaps session is shifted transmit leg and is initiatively removed session.
As seen, the embodiment of the invention realizes the method that the SIP session is shifted, transmit leg initiation session transfer request is shifted in session, in described session transfer request, carry the media information that needs transfer, thereby for the necessary information that provides is provided in session, like this, no matter needing the process of setting up of the session of transfer is to shift the recipient by session to initiate, still by SCF (Session Control Function, operation controlling entity) initiates, can set up corresponding session according to the media information of wherein needs transfer.And, not only can realize whole transfers of Media Stream, and can realize that the part of Media Stream shifts.
Need to prove, after session is shifted successfully, if the user wishes that the media information that will transfer to session transfer recipient shifts back session transfer transmit leg, can have following two kinds of methods:
A kind of is that session transfer transmit leg is directly initiated SIP Re-invite (heavily inviting) message, request obtains corresponding media information, SCF is to MCF (Media Control Function, medium controlling entity) initiates Re-invite, MCF sends RTSP Play (broadcast) message and gives MDF (Media Delivery Function, the distribution of media entity), request corresponding media information.Can according to circumstances determine whether keeping or deleting corresponding session or the business that the recipient is shifted in session.
Another kind is that session transfer recipient asks SCF that corresponding media information is shifted back to session transfer transmit leg, carry STI in the request and represent the m of this media information capable, shift transmit leg by the SCF announcement session and carry out session modification, perhaps SCF directly initiates SIP Reinvite initiation session modification process, makes session shift transmit leg and regains corresponding media information.
With reference to Fig. 2, be the flow chart that the present invention realizes method second embodiment that the SIP session is shifted, may further comprise the steps:
Particularly, described session transfer request can be directly to come from session to shift transmit leg, also can be receiving that by SCF session shifts the session transfer request that transmit leg sends, and confirm that session shifts transmit leg and have and send after the session transfer rights.
In the session transfer request that session transfer transmit leg sends, can also carry some other information, existing in front detailed description the in detail.
The information of carrying in the session transfer request that SCF sends can comprise with the next item down or multiple parameters: the indication of ST message, STI, session transfer transmit leg, session transfer indicate, partly shift or whole transfer is indicated, Media Stream, content identification and the side-play amount of needs transfer.
According to application need, the media information that the needs that carry in the session transfer request that SCF sends shift, the media information that shifts the needs transfer of carrying in the session transfer request of transmit leg transmission with session can have part different, that is to say, after SCF receives that the session transfer request of transmit leg transmission is shifted in session, the actual characteristic of the media information that can shift is as required made amendment to the SDP in this session transfer request, describes in detail in the time of specifically will giving an example in the back.
Step 202 according to the information of carrying in the described session transfer request, obtains to set up the required information of transfer service.
Particularly, session is shifted the recipient and can directly obtain the described professional required information of setting up from described session transfer request; Can also obtain the described professional required information of setting up from other entities according to the information of carrying in the described session transfer request, specifically will describe in detail in the back.
Step 203 utilizes the required information of transfer service of setting up that obtains to set up transfer service.
Mention in above-mentioned steps 202, the recipient is shifted in session can obtain the described professional required information of setting up from other entities according to the information of carrying in the described session transfer request, mainly is meant the side-play amount of the business that need shift.Shift the source difference of the session transfer request that the recipient receives according to session, following two kinds of situations can be arranged:
1. described session is shifted session transfer request that the recipient receives and is come from session and shift transmit leg, then describedly obtains the required information of described foundations business from other entities and comprises:
After session transfer recipient receives described session transfer request, send session to SCF and set up request, described session is carried STI in setting up and asking;
Receive the response message that SCF returns, carry SCF in the described response message according to the side-play amount of described STI from the business of the needs transfer of MCF acquisition;
Acquisition needs the side-play amount of the business of transfer from described response message.
2. described session is shifted the session transfer request that the recipient receives and is sent by SCF, then describedly obtains the required information of described foundations business from other entities and comprises:
The session foundation request that the recipient receives the SCF transmission is shifted in session, and described session is set up and carried the side-play amount of SCF from the described business that need shift of MCF acquisition in the request; Set up the described required information of business of setting up of acquisition the request from described session.
In embodiments of the present invention, also can further may further comprise the steps:
SCF receives session and shifts the session transfer request that transmit leg sends, and carries the media information that needs transfer in the described session transfer request;
Determine whether described session transfer transmit leg has the session transfer rights;
If transmit leg has the session transfer rights, then set up process according to the active of the information in described session transfer request initiation session; Perhaps shift the recipient and send session transfer request, carry the media information that needs transfer in the described session transfer request to session.
Wherein, SCF sets up process according to the information initiation session in the described session transfer request and comprises:
SCF sets up process to the MCF initiation session, obtains the side-play amount of RTSP (Real Time Streaming Protocol, real time streaming transport protocol) gap marker and the business that needs to shift;
Described RTSP gap marker and described side-play amount are sent to session transfer recipient, and recipient's session is shifted in initiation and session.
In embodiments of the present invention, also can further may further comprise the steps:
After SCF receives that the session transfer request of transmit leg transmission is shifted in session, the media information that the needs that carry in the described session transfer request shift is made amendment, and the amended media information that needs to shift is carried in the session foundation request that sends to session transfer recipient.
SCF receives the session of session transfer recipient initiation and sets up request, carries session transfer sign during described session is set up and asked;
Determine whether described session transfer recipient has the authority that receives the session transfer;
Have the authority that the reception session is shifted if the recipient is shifted in described session, then shift sign obtains the business of RTSP gap marker and needs transfer from MCF side-play amount according to described session;
Described RTSP gap marker and described side-play amount are sent to session transfer recipient.
As seen, the method for the session of embodiment of the invention transfer, session is shifted the recipient and is received the session transfer request that carries the media information that needs transfer, sets up corresponding session according to the media information of wherein needs transfer.And, not only can realize whole transfers of Media Stream, and can realize that the part of Media Stream shifts.
Below in conjunction with concrete network entity the embodiment of the invention under the difference transfer demand is realized that the process that session is shifted is described in detail.
In the following embodiments, suppose that UE1 and UE2 belong to same contracted user, and the session transfer service of having contracted, the user watches CoD (Content On Demand by UE1, content-on-demand) business, and in the process of watching, finish session and shift, finish session when perhaps signatory between UE1 and the UE2 meets requiring of session transfer service and shift.
With reference to Fig. 3, be that the embodiment of the invention realizes a kind of message flow chart of method in concrete application that the SIP session is shifted.
In this embodiment, the session that UE1 carries out all need be copied on the UE2, and set up process by UE2 active initiation session.Mainly may further comprise the steps:
301. the user selects to carry out session service by UE1, specifically can be to realize by number and the selection session transfer service of input UE2 on UE1.
302.UE1 initiation session transfer request, described session transfer request specifically can be sip messages, such as being existing message message, refer message etc. among the SIP.Certainly, also can realize by newly-increased sip message.
The parameter that wherein needs to carry comprises: the indication of ST message, STI, UE2, duplicate or substitute indication, part shifts or all shift media information, content identification and the side-play amount of indication, needs transfer.
Wherein need the media information that shifts, can represent by in existing sip message, increasing a new message header: ST-media Transferred:Audio
Also can use when setting up session the serial number of the Media Stream of reaching with regard to the Offer/Answer model between UE1 and the SCF.
In addition, also can in the message body of session transfer request, add the XML of presentation medium.
303.SCF after receiving session transfer request, UE1 is carried out session shifts mandate, judge whether UE1 has corresponding authority.
If 304. UE1 has corresponding authority, then SCF initiation sip message notice UE2 need carry out the session transfer, the parameter of carrying in described sip message comprises: the indication of ST message, STI, UE1, SDP, content identification and side-play amount.Wherein:
Described SDP is used for to UE2 notice UE1 about this professional related media information.
If all shift, and do not carry the medium relevant information in the session transfer request of step 301, SCF can be by obtaining about this professional medium relevant information with MCF alternately.
If part shifts or all shifts, and carried the medium relevant information in the session transfer request of step 301, SCF can make amendment to these information, specifically can be by obtaining alternately about this professional medium relevant information with MCF.
Such as, the user wishes the audio frequency of UE1 is transferred to UE2, and indicates by increasing delegation among the SDP in the sip message of issuing SCF at UE1:
m＝audio?4011?RTP/AVP?96
/ * UE1 only support payload type 96 correspond to G.726 coding */
After SCF received this session transfer request, by obtaining the coding that this program is supported 98 (MPV) 99 (H.261) simultaneously alternately with MCF, then SCF can be revised as this m is capable:
m＝audio?4011?RTP/AVP?96?97?98。
Described content identification and side-play amount are used to indicate the content identification and the side-play amount of the CoD program that the user watching on UE1.If carried the side-play amount that UE1 is provided with in the session transfer request of step 301, then SCF can directly carry this side-play amount.Perhaps, SCF can obtain the user watches this CoD business tine by UE1 side-play amount by mutual with MCF or MDF.
Need to prove, it is poor to have the regular hour between the side-play amount that side-play amount that UE1 is provided with and SCF carry in the sip message that UE2 sends, can ignore this time difference at this, think that it can not influence the continuity of customer service, promptly think this two place side-play amount at all be professional to transfer to scene on the UE2 immediately from UE1.
305.UE2 after receiving this sip message, return response message 200OK to SCF.
306.SCF after receiving the response message that returns, return response message 200OK to UE1.
307.UE2 send Invite (invitation) message, process is set up in the session between initiation and the SCF, carries STI in described Invite message, to show that the session that needs are set up is to shift the session that obtains by session.
308.SCF after receiving Invite message, judge that according to the STI that wherein carries this request is for shifting the business that requires foundation through session.SCF authorizes UE2, confirms that UE2 has the authority of watching the session transfer service.
At this moment, SCF can obtain the side-play amount of the ongoing business of UE1 from MCF, may exist certain hour poor between the side-play amount of carrying in the sip message that SCP initiates in side-play amount that obtained this moment and the step 304.
309.SCF serve as B2BUA (Back-to-Back User Agent, back-to-back user agent), initiation session is set up message Invite and is given MCF.
310.MCF after receiving Invite message, initiate RTSP to MDF and set up request, the RTSP passage between foundation and the MDF.
311.MDF after receiving that RTSP sets up request, return 200OK message, wherein carry the RTSP passage ID (RTSP sign) of the RTSP passage of foundation to MCF.
312.MCF after receiving 200OK message, return 200OK message, wherein carry the RTSP passage ID that MDF returns to SCF.
313.SCF RTSP passage ID (if side-play amount obtains when the step 308, at this moment should return) is returned to UE2 in 200OK.
SCF can notify the success of UE1 session transfer service at this moment.
314.UE2 initiate RTSP broadcast message to MDF according to RTSP passage ID and side-play amount.
315.MDF after receiving that described RTSP plays message, return 200OK message to UE2.
Then, the user just can watch this CoD program by UE2.
As seen, in embodiments of the present invention, the media information that the needs that SCF sends UE1 shift sends to UE2, by UE2 initiatively initiation session set up process, the service duplication that needs among the UE1 to shift to UE2, has been realized the session transfer.
With reference to Fig. 4, be that the embodiment of the invention realizes the another kind of message flow chart of method in concrete application that the SIP session is shifted.
In this embodiment, the session replacing whole that UE1 need be carried out and is set up process by the SCF initiation session to UE2.Mainly may further comprise the steps:
401. the user selects to carry out the session transfer service by UE1, can be the number by input UE2 on UE1 and select the session transfer service to realize, can select to be all or part of transfer and to be to substitute or the transfer of copy mode by the user simultaneously.
402.UE1 the initiation session transfer request can be passed through sip message.It can be message message, refer message, also can realize by newly-increased sip message.In embodiments of the present invention, use message message, the parameter that wherein needs to carry comprises: the indication of ST message, STI, UE2, duplicate or substitute indication, part shifts or all shifts indication, SDP, content identification and side-play amount.
403.SCF after receiving session transfer request, UE1 is carried out session shifts mandate, judge whether UE1 has corresponding authority.
If 404. UE1 has corresponding authority, then SCF returns 200OK message to UE1.
Give MCF 405.SCF initiate Invite message.
Set up message 406.MCF initiate RTSP, the RTSP passage between foundation and the MDF.
In 200OK, issue MCF 407.MDF will set up good RTSP passage ID.
408.MCF ID returns to SCF in 200OK with the RTSP passage.At this moment, MCF can obtain side-play amount simultaneously, and returns to SCF.
409.SCF send Invite message to UE2, RTSP passage ID and described side-play amount are carried in the session of initiation and UE2 in the described Invite message.
410.UE2 send 200OK message to SCF, show session foundation.
Above-mentioned steps 405 to 410 is set up professional process for the third party controls.SCF serves as the third party, related two SIP sessions.
411.SCF send ACK message to UE2.
412.UE2 initiate RTSP broadcast message according to RTSP passage ID that carries in the Invite message of receiving in the step 409 and side-play amount.
413. the user watches the CoD business by UE2.
414.SCF notice UE1 session transfer service shifts successfully.
415.UE1 return 200OK message to SCF.
Need to prove, there is no strict sequential relationship between above-mentioned steps 412,413 and the step 414,415.
416. because the UE1 initiation is the session transfer of alternative, therefore need to disconnect the CoD business, particularly, UE1 passes through transmission RTSP Tear Down (RTSP dismounting) message, disconnects RTSP and connects.
417.MDF return success response message to UE1, disconnection is connected with the RTSP of UE1.
418.UE1 initiate SIP Bye message to SCF.
419.SCF after receiving SIP Bye message,, initiate SIP BYE message and give MCF with the session association between itself and the MCF.
420.MCF return 200OK message to SCF.
421.SCF return 200OK message to UE1.
Above-mentioned steps 416 to step 421 is by SCF notice UE1, and by the process of UE1 initiation dismounting session, this process also can be initiated by SCF.Detailed process will describe in detail in the back.
As seen, in embodiments of the present invention, after SCF receives the media information of the needs transfer that UE1 sends, the media information that needs are shifted sends to UE2, set up process by UE2 active initiation session, the business that needs among the UE1 to shift is substituted into UE2, realized the session transfer.What UE1 initiated is the session transfer of alternative, and therefore, after the session transfer was finished, SCF notified UE1, by UE1 initiation session demolishing process.
With reference to Fig. 5, be that the embodiment of the invention realizes the another kind of message flow chart of method in concrete application that the SIP session is shifted.
In this embodiment, step 501 is similar to step 413 to the step 401 among step 513 and Fig. 4.
Because what UE1 initiated is the session transfer of alternative, therefore need to disconnect the CoD business, particularly:
514.SCF send SIP BYE message, initiation session demolishing process to UE1.
515.UE1 after receiving SIP BYE message, send RTSP Tear Down (RTSP dismounting) message, disconnect RTSP and connect to MDF.
516.MDF return success response message to UE1.
Be connected with the RTSP of UE1 517.MDF disconnect.
518.UE1 return 200OK message to SCF.
519.SCF send SIP BYE message to MCF.
520.MCF return 200OK message to SCF.
As seen, in embodiments of the present invention, after SCF receives the media information of the needs transfer that UE1 sends, the media information that needs are shifted sends to UE2, set up process by UE2 active initiation session, the business that needs among the UE1 to shift is substituted into UE2, realized the session transfer.What UE1 initiated is the session transfer of alternative, and therefore, after the session transfer was finished, SCF was by SIP BYE message, initiation session demolishing process.
With reference to Fig. 6, be that the embodiment of the invention realizes the another kind of message flow chart of method in concrete application that session is shifted.
In this embodiment, the session section that UE1 carries out need be substituted on the UE2, and set up process by the SCF initiation session.Mainly may further comprise the steps:
601. the user selects to carry out the session transfer service by UE1, specifically can be to realize by number and the selection session transfer service of input UE2 on UE1, the user wishes in input on the UE1 which Media Stream is transferred on the UE2, and no longer receives these Media Streams on UE1.
602.UE1 to SCF initiation session transfer request, described session transfer request can be a sip message, and the parameter that wherein needs to carry comprises: the indication of ST message, STI, UE2, duplicate or substitute indication, part shifts or all shifts indication, SDP, content identification and side-play amount.
In the present embodiment, above-mentioned part transfer or whole the transfer are designated as the part transfer; Carry m=audio and corresponding a capable (as m=audio 4011RTP/AVP 96) among the described SDP, show that hope is transferred to UE2 with this Media Stream.
603.SCF after receiving described session transfer request, UE1 is carried out session shifts mandate, judge whether UE1 has corresponding authority.
If 604. UE1 has corresponding authority, then SCF initiation sip message notice UE2 need carry out the session transfer, the parameter that wherein needs to carry comprises: the indication of ST message, STI, UE1, SDP, part shift or all shift indication, content identification and side-play amount.
Need to prove that if carried the medium relevant information in above-mentioned steps 601, then SCF can make amendment to these information, specifically can be by obtaining alternately about this professional medium relevant information with MCF.Such as, SCF is as follows to the modification process of these information:
Suppose that the user wishes the audio frequency of UE1 is transferred to UE2, in UE1 issues SDP in the session transfer request of SCF, increase following content:
m＝audio?4011?RTP/AVP?96
/ * UE1 only support payload type 96 correspond to G.726 coding */
SCF after receiving this session transfer request, through and the mutual acquisition of the MCF program that need shift support the coding of 98 (MPV), 99 (H.261) simultaneously, then SCF is revised as this m is capable:
m＝audio?4011?RTP/AVP?96?97?98
In addition, if UE1 issues and carried the side-play amount that UE1 is provided with in the session transfer request of SCF in above-mentioned steps 601, SCF can directly carry this side-play amount in the sip message of initiating so.Perhaps, SCF can obtain the user watches this program request business tine by UE1 side-play amount by mutual with MCF/MDF.Need to prove, the side-play amount that this two place obtains, i.e. the side-play amount that is provided with of UE1 and the SCF side-play amount of in the sip message that sends to UE2, carrying, between may exist the regular hour poor, this time difference can be ignored, think that it can not influence the customer service continuity.
605.UE2 after receiving this request, return response message 200OK to SCF.
606.SCF return 200OK message to UE1.
607.UE2 send Invite message, process is set up in session between initiation and the SCF, carry STI in the described Invite message, show that this is once to shift the session that obtains by session, and wherein carry the media content that the current session of m line display need be set up: m=audio 4011RTP/AVP 9697.
608.SCF after receiving Invite message, judge that according to the STI that wherein carries this request is for shifting the business that requires foundation through session.SCF authorizes UE2, confirms that UE2 has the authority of watching this session transfer service.
SCF can obtain the side-play amount of the ongoing business of UE1 at this moment from MCF, may there be the big time difference in the side-play amount of carrying in the sip message that SCF initiates in side-play amount that obtained this moment and the above-mentioned steps 605.
609.SCF serve as B2BUA, initiation session is set up message Invite and is given MCF.
610.MCF after receiving Invite message, initiate RTSP and set up message, the RTSP passage between foundation and the MDF.
611.MDF return 200OK message to MCF, wherein carried the RTSP passage ID of the RTSP passage of setting up.
612.MCF return 200OK message to SCF, wherein carried the RTSP passage ID that MDF returns.
613.SCF after receiving the response message that MCF returns, RTSP passage ID (if side-play amount obtains, at this moment should return) is returned to UE2 by 200OK message in step 608.
At this moment, SCF can notify the success of UE1 session transfer service.
614.UE2 initiate RTSP broadcast message to MDF according to RTSP passage ID and described side-play amount.
615.MDF return 200OK message to UE2.
616. this moment, UE2 receives the audio stream from MDF, promptly transfers to the Media Stream of UE2 from UE1, in order to distinguish with other Media Streams, is referred to as Media Stream 1.
617.SCF notice UE1 session is this time shifted successfully.
618.UE1 return 200OK message to SCF.
619. if UE1 does not wish to continue to support (reception) audio stream, then UE1 initiates SIP Re-Invite (heavily inviting) message, SDP in this message is about the m behavior of audio stream: m=audio 0RTP/AVP96 shows that UE1 does not wish to continue to support (reception) audio stream.
620.SCF after receiving the initiation SIP Re-Invite of UE1 initiation, initiate SIP Re-Invite message to MCF.
621.MCF after receiving SIP Re-Invite message, initiate RTSP and play message, wherein carry following information to MDF:
PLAY?rtsp://SessionTransfer.com/SessionTransfer1
Require：3gpp-switch
Session：xxxx
Switch-Stream：old＝rtsp://SessionTransfer.com/SessionTransfer1/streamID＝1，
old＝rtsp://SessionTransfer.com/SessionTransfer1/streamID＝2；
new＝rtsp://SessionTransfer.com/SessionTransfer1/streamID＝2，
old＝rtsp://SessionTransfer.com/SessionTransfer1/streamID＝3；
new＝rtsp://SessionTransfer.com/SessionTransfer1/streamID＝3，
This shows that MCF wishes Media Stream 1 deletion.
622.MDF return 200OK message to MCF, and no longer transmission of audio is given UE1.
623.MCF return 200OK message to SCF.
624.SCF return 200OK message to UE1.
After this, the user is by other Media Streams outside the UE1 receiving media stream 1, such as the video flowing (Media Stream 2) and the captions (Media Stream 3) of demand (telecommunication) service.
As seen, in embodiments of the present invention, after SCF receives the media information of the needs transfer that UE1 sends, the media information that needs are shifted sends to UE2, set up process by UE2 active initiation session, the business that needs among the UE1 to shift is substituted into UE2, realized the transfer of session.Because what UE1 initiated is the session transfer of part alternative, therefore, after the session transfer was finished, UE1 sent SIP Re-Invite message, received the Media Stream that does not shift from MDF.
Need to prove, in above-mentioned Fig. 4 is extremely embodiment illustrated in fig. 7, SCF and other entities, mutual IMS Core (the IP Multimedia Subsystem Core that passes through such as UE1, UE2, MCF, the IP Multimedia System kernel entity), such as CSCF (Call Session Control Function, CCF) comprises that P-CSCF (Proxy CSCF), S-CSCF (Serving CSCF), I-CSCF IMS entities such as (Interrogating CSCF) carry out the forwarding of message, clear in order to illustrate, not shown relevant entity in Fig. 2.
In addition, in above-mentioned each figure, also omitted the response message Ack of corresponding Invite (invitation) message.
In addition, need to prove, in the various embodiments described above, SCF can obtain the side-play amounts of the business that need shift on different opportunitys, and the side-play amount that obtain different opportunitys may exist the regular hour poor, when concrete the application, can be according to different business needs, the opportunity of selecting SCF to obtain side-play amount is to adapt to different business demands.
In the various embodiments described above, described UE1 and sent session transfer request, set up the process of corresponding session by SCF or UE2 according to the media information that the needs that carry in the described session transfer request shift then to SCF.Need to prove that UE1 also can directly send session transfer request to UE2, and carry the media information that needs transfer in described session transfer request, UE2 sets up corresponding session according to the media information that described needs shift.Wherein, part shifts if desired, then needs the side-play amount of the business that shifts to carry in session transfer request, also can be obtained from other entities by UE2, and detailed process is similar to the above, is not described in detail at this.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
Correspondingly, the embodiment of the invention also provides a kind of UE, as shown in Figure 7, is a kind of structural representation of embodiment of the invention UE.
In this embodiment, described UE700 comprises: media information acquiring unit 701 and information transmitting unit 702.In addition, described UE700 also can further comprise: remove unit 703.Wherein:
Media information acquiring unit 701 is used to obtain the media information that needs shift.
Remove unit 703, when the branch mode that is used for the session shifted at needs is alternative, shifts in session and to finish back dismounting session.Particularly, session can be removed according to the notice of operation controlling entity in described dismounting unit 703, perhaps initiatively removes session.
After making that session is shifted successfully, the media information that shifts is shifted back this UE again, in embodiments of the present invention, described information transmitting unit 702 also is used for after session is shifted successfully, sends the heavy invitation message of SIP, and request regains described media information.
In addition, in embodiments of the present invention, also can further comprise: session modification unit (not shown) is used for the notice initiation session modification process according to operation controlling entity; Described media information acquiring unit 701 also is used for the session modification process according to the initiation of described session modification unit, regains described media information; Perhaps the session modification process of initiating according to operation controlling entity regains described media information.
The UE of the embodiment of the invention can be used as session and shifts transmit leg, the initiation session transfer request, and carrying in the described session transfer request needs the media information that shifts, thereby shifts the necessary information that provides for session.Detailed process can not repeat them here with reference to the description in the method for embodiment of the invention realization SIP session transfer shown in Figure 1.
Correspondingly, the embodiment of the invention also provides a kind of UE, as shown in Figure 8, is the another kind of structural representation of this UE.
In this embodiment, described UE800 comprises: request receiving element 801, business information acquiring unit 802 and business are set up unit 803.Wherein:
Request receiving element 801 is used to receive session transfer request, carries the media information that needs transfer in the described session transfer request; In actual applications, also can further carry following any one or multiple parameters in the described session transfer request: the indication of session Transfer Message, sign is shifted in session, and the recipient is shifted in session, and indication, content identification and side-play amount are shifted in session;
Business information acquiring unit 802 is used for the information of carrying according to described session transfer request, obtains to set up the required information of transfer service;
Business is set up unit 803, and the required information of transfer service of setting up that is used to utilize described business information acquiring unit 802 to obtain is set up transfer service.
Particularly, described business information acquiring unit 802 can directly obtain to set up professional required information on the one hand from described session transfer request, on the other hand, the session transfer request that receives according to described request receiving element 801 is from different entities, described business information acquiring unit 802 can also obtain to set up professional required information by other modes, and following two kinds of situations specifically can be arranged:
1. described request receiving element 801 shifts transmit leg from session and receives session transfer request.
In this case, described UE800 also can further comprise: request transmitting unit and response receiving element (not shown).Wherein, the described request transmitting element is used for after described request receiving element 801 is received described session transfer request, sends session to SCF and sets up request, carries session during described session is set up and asked and shifts sign; Described response receiving element is used to receive the response message that SCF returns, and carries SCF in the described response message and shifts the side-play amount of sign from the business of the needs transfer of MCF acquisition according to described session.
In this case, described business information acquiring unit 802 specifically is used for obtaining the described professional required information of setting up from the response message that described response receiving element receives.
2. described request receiving element 801 receives described session transfer request from SCF.
In this case, described request receiving element 801 also is used to receive the session foundation request of SCF transmission, and described session is set up and carried the side-play amount of SCF from the described business that need shift of MCF acquisition in the request; Described business information acquiring unit 802 specifically is used for obtaining to set up professional required information from the described session request of setting up.
The UE of the embodiment of the invention can be used as session and shifts the recipient, receives session transfer request, and according to the information of carrying in the described session transfer request, sets up corresponding session.Detailed process can not repeat them here with reference to the description in the method for embodiment of the invention realization SIP session transfer shown in Figure 2.And the UE of the embodiment of the invention not only can realize whole transfers of Media Stream, and can realize that the part of Media Stream shifts.
Correspondingly, the embodiment of the invention also provides a kind of SCF, as shown in Figure 9, is a kind of structural representation of embodiment of the invention SCF.
In this embodiment, described SCF900 comprises: unit 903 is set up in receiving element 901, granted unit 902 and session.Wherein:
Receiving element 901 is used to receive session and shifts the session transfer request that transmit leg sends, and carries the media information that needs transfer in the described session transfer request; In actual applications, also can further carry following any one or multiple parameters in the described session transfer request: the indication of session Transfer Message, sign is shifted in session, and the recipient is shifted in session, and indication, content identification and side-play amount are shifted in session.
In embodiments of the present invention, described session a kind of preferred result of setting up unit 903 comprises: information obtains subelement and subelement (not shown) is set up in session.Wherein, described information is obtained subelement, is used for initiation session and sets up process, obtains the side-play amount of RTSP gap marker and the business that needs to shift; Subelement is set up in described session, is used for described RTSP gap marker and described side-play amount are sent to session transfer recipient, and recipient's session is shifted in initiation and session.
The SCF of the embodiment of the invention after the session transfer request that receives session transfer transmit leg, can shift the information of carrying in the session transfer request of transmit leg transmission according to session, and initiatively initiation session is set up process, sets up corresponding session.And, not only can realize whole transfers of Media Stream, and can realize that the part of Media Stream shifts.Detailed process can be with reference to the description in the method for the front embodiment of the invention.
As shown in figure 10, be the another kind of structural representation of embodiment of the invention SCF.
In this embodiment, described SCF1000 comprises: receiving element 1001, granted unit 1002 and transmitting element 1003.Wherein:
Receiving element 1001 is used to receive session and shifts the session transfer request that transmit leg sends, and carries the media information that needs transfer in the described session transfer request; In actual applications, also can further carry following any one or multiple parameters in the described session transfer request: the indication of session Transfer Message, sign is shifted in session, and the recipient is shifted in session, and indication, content identification and side-play amount are shifted in session;
Transmitting element 1003 is used for shifting the recipient to session and sending session transfer request after described granted unit 1002 determines that transmit leg has the session transfer rights, carries the media information that needs transfer in the described session transfer request.
In embodiments of the present invention, described receiving element 1001 also is used to receive the session foundation request that recipient's initiation is shifted in session, carries the session transfer in the described session foundation request and identifies; Described granted unit 1002 is used for also determining whether described session transfer recipient has the authority that receives the session transfer;
Alternatively, described SCF1000 also can further comprise: acquiring unit 1004, be used for after described granted unit 1002 determines that described session transfer recipient has the authority of reception session transfer, shifting the side-play amount of sign from the business of MCF acquisition RTSP gap marker and needs transfer according to described session.Described transmitting element 1003 also is used for described RTSP gap marker and described side-play amount are sent to session transfer recipient.
The SCF of the embodiment of the invention, after the session transfer request that receives session transfer transmit leg, shift the recipient to session and send session transfer request, make session shift the recipient, set up corresponding session according to the media information that the needs that carry in this session transfer request shift.And, not only can realize whole transfers of Media Stream, and can realize that the part of Media Stream shifts.Detailed process can be with reference to the description in the method for the front embodiment of the invention.
More than the embodiment of the invention is described in detail, used embodiment herein the present invention set forth, the explanation of above embodiment just is used for help understanding method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (24)
1. a method that realizes that the SIP session is shifted is characterized in that, comprising:
The media information that transmit leg obtains needs transfer is shifted in session;
The initiation session transfer request is carried the media information that needs transfer in the described session transfer request, set up transfer service so that the recipient is shifted in session according to the media information that described needs shift.
2. method according to claim 1 is characterized in that, also carries session in the described session transfer request and shifts indication, and described session transfer indication is used to indicate session all to shift or session section shifts.
3. method according to claim 1 and 2 is characterized in that,
Carry the media information of required transfer by the SDP in the message body in the described session transfer request; Perhaps
Carry the described media information that needs transfer by the message header in the described session transfer request; Perhaps
By with described media information in the capable corresponding serial number of each medium represent the media information that described needs shift; Perhaps
Define the described media information that needs transfer by the XML grammer in the session Transfer Message body.
4. method according to claim 1 and 2 is characterized in that, comprises branch mode in the described session transfer request, and described branch mode is an alternative; Described method also comprises:
The branch mode of the session of Zhuan Yiing is for substituting if desired, and after then session was shifted and finished, session was shifted transmit leg and removed described session according to the notice of operation controlling entity; Perhaps session is shifted transmit leg and is initiatively removed described session.
5. method according to claim 1 and 2 is characterized in that, described method also comprises:
After session was shifted successfully, described session was shifted transmit leg by the heavy invitation message of SIP, and request regains described media information; Perhaps
The notice initiation session modification process of transmit leg according to operation controlling entity shifted in described session, regains described media information; Perhaps
The session modification process that transmit leg is initiated by operation controlling entity is shifted in described session, regains described media information.
6. a method that realizes that the SIP session is shifted is characterized in that, comprising:
Session is shifted the recipient and is received session transfer request, carries the media information that needs transfer in the described session transfer request;
According to the information of carrying in the described session transfer request, obtain to set up the required information of transfer service;
Utilize the required information of transfer service of setting up that obtains to set up transfer service.
7. method according to claim 6 is characterized in that, also carries session in the described session transfer request and shifts indication, and described session transfer indication is used to indicate session all to shift or session section shifts.
8. according to claim 6 or 7 described methods, it is characterized in that the described required information of transfer service of setting up comprises: the side-play amount of the business that needs shift;
Described acquisition is set up the required information of transfer service and is comprised:
After session transfer recipient receives described session transfer request, send session to operation controlling entity and set up request, carry session during described session is set up and asked and shift sign;
Receive the response message that operation controlling entity is returned, carry operation controlling entity in the described response message and shift the side-play amount of sign from the business of the described needs transfer of medium controlling entity acquisition according to described session;
Acquisition needs the side-play amount of the business of transfer from described response message.
9. according to claim 6 or 7 described methods, it is characterized in that the described required information of transfer service of setting up comprises: the side-play amount of the business that needs shift;
Described session transfer recipient receives session transfer request and is: session is shifted the recipient and is received session transfer request from operation controlling entity;
Described acquisition is set up the required information of transfer service and is comprised:
Session is shifted the recipient and is set up the side-play amount that obtains the described business that need shift the request from described session.
10. method according to claim 9 is characterized in that, described method also comprises:
Operation controlling entity receives session and shifts the session transfer request that transmit leg sends, and carries the media information that needs transfer in the described session transfer request;
Determine whether described session transfer transmit leg has the session transfer rights;
If transmit leg has the session transfer rights, then set up process according to the information initiation session in the described session transfer request; Perhaps shift the recipient and send session transfer request, carry the media information that needs transfer in the described session transfer request to session.
11. method according to claim 10 is characterized in that, describedly sets up process according to the information initiation session in the described session transfer request and comprises:
Operation controlling entity is set up process to the medium controlling entity initiation session, obtains the side-play amount of real time streaming transport protocol RTSP gap marker and the business that needs to shift;
Described RTSP gap marker and described side-play amount are sent to session transfer recipient, and recipient's session is shifted in initiation and session.
12. method according to claim 10 is characterized in that, described method also comprises:
After operation controlling entity receives that the session transfer request of transmit leg transmission is shifted in session, the media information that the needs that carry in the described session transfer request shift is made amendment, and the amended media information that needs to shift is carried in the session foundation request that sends to session transfer recipient.
13. method according to claim 10 is characterized in that, described method also comprises:
Operation controlling entity receives the session of session transfer recipient initiation and sets up request, carries session transfer sign during described session is set up and asked;
Determine whether described session transfer recipient has the authority that receives the session transfer;
Have the authority that the reception session is shifted if the recipient is shifted in described session, then shift sign obtains the business of RTSP gap marker and needs transfer from medium controlling entity side-play amount according to described session;
Described RTSP gap marker and described side-play amount are sent to session transfer recipient.
14. a subscriber equipment is characterized in that, comprising:
The media information acquiring unit is used to obtain the media information that needs shift;
Information transmitting unit is used for the initiation session transfer request, carries the media information that needs transfer in the described session transfer request.
15. subscriber equipment according to claim 14 is characterized in that, described subscriber equipment also comprises:
Remove the unit, when the branch mode that is used for the session shifted at needs is alternative, shifts in session and to finish back dismounting session.
16. according to claim 14 or 15 described subscriber equipmenies, it is characterized in that,
Described information transmitting unit also is used for after session is shifted successfully, sends the heavy invitation message of SIP, and request regains described media information.
17. according to claim 14 or 15 described subscriber equipmenies, it is characterized in that, also comprise:
The session modification unit is used for the notice initiation session modification process according to operation controlling entity;
Described media information acquiring unit also is used for the session modification process according to the initiation of described session modification unit, regains described media information; Perhaps the session modification process of initiating according to operation controlling entity regains described media information.
18. a subscriber equipment is characterized in that, comprising:
The request receiving element is used to receive session transfer request, carries the media information that needs transfer in the described session transfer request;
The business information acquiring unit is used for the information of carrying according to described session transfer request, obtains to set up the required information of transfer service;
Business is set up the unit, is used to utilize the required information of transfer service of setting up of acquisition to set up transfer service.
19. subscriber equipment according to claim 18 is characterized in that, directly obtains the described professional required information of setting up in the information that described business information acquiring unit carries from described session transfer request.
20. subscriber equipment according to claim 18 is characterized in that, the described request receiving element shifts transmit leg from session and receives session transfer request;
Described subscriber equipment also comprises:
Request transmitting unit is used for after the described request receiving element is received described session transfer request, sends session to operation controlling entity and sets up request, carries session during described session is set up and asked and shifts sign;
The response receiving element is used to receive the response message that operation controlling entity is returned, and carries operation controlling entity in the described response message and shifts the side-play amount of sign from the business of the described needs transfer of medium controlling entity acquisition according to described session;
Described business information acquiring unit specifically is used for obtaining the described professional required information of setting up from the response message that described response receiving element receives.
21. subscriber equipment according to claim 18 is characterized in that, the described request receiving element receives session transfer request from operation controlling entity;
The described request receiving element also is used to receive the session foundation request of operation controlling entity transmission, and described session is set up and carried the side-play amount of operation controlling entity from the described business that need shift of medium controlling entity acquisition in the request;
Described business information acquiring unit specifically is used for obtaining the described professional required information of setting up from the described session request of setting up.
22. an operation controlling entity is characterized in that, comprising: receiving element, granted unit;
Described receiving element is used to receive session and shifts the session transfer request that transmit leg sends, and carries the media information that needs transfer in the described session transfer request;
Described granted unit is used for determining whether described session transfer transmit leg has the session transfer rights;
Described operation controlling entity also comprises:
The unit is set up in session, is used for after described granted unit determines that transmit leg has the session transfer rights, sets up process according to the media information active initiation session that described needs shift; Perhaps,
Transmitting element is used for after described granted unit determines that transmit leg has the session transfer rights, shifts the recipient to session and sends session transfer request, carries the media information that needs transfer in the described session transfer request.
23. operation controlling entity according to claim 22 is characterized in that, described session is set up the unit and is comprised:
Information is obtained subelement, is used for initiation session and sets up process, obtains the side-play amount of real time streaming transport protocol RTSP gap marker and the business that needs to shift;
Subelement is set up in session, is used for described RTSP gap marker and described side-play amount are sent to session transfer recipient, and recipient's session is shifted in initiation and session.
24. operation controlling entity according to claim 22 is characterized in that,
Described receiving element also is used to receive the session foundation request that recipient's initiation is shifted in session, carries the session transfer in the described session foundation request and identifies;
Described granted unit is used for also determining whether described session transfer recipient has the authority that receives the session transfer;
Described operation controlling entity also comprises:
Acquiring unit is used for shifting the side-play amount of sign from the business of medium controlling entity acquisition RTSP gap marker and needs transfer according to described session after described granted unit determines that described session transfer recipient has the authority of reception session transfer;
Described transmitting element also is used for described RTSP gap marker and described side-play amount are sent to session transfer recipient.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103416038A (en) * | 2011-03-08 | 2013-11-27 | 交互数字专利控股公司 | Privacy for inter-user equipment transfer subscribers |
| CN104272703A (en) * | 2012-05-15 | 2015-01-07 | 瑞典爱立信有限公司 | Access transfer for a drvcc mobile terminal |
| CN111918415A (en) * | 2019-05-10 | 2020-11-10 | 大唐移动通信设备有限公司 | Method and equipment for modifying double connection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316204A (en) * | 2007-05-28 | 2008-12-03 | 华为技术有限公司 | Conversation moving method and conversation moving system |
| CN101370292A (en) * | 2008-09-24 | 2009-02-18 | 深圳华为通信技术有限公司 | Method, apparatus and system for media transfer between terminals |
| CN101383827A (en) * | 2008-10-13 | 2009-03-11 | 深圳华为通信技术有限公司 | Method, apparatus and system for media transferring |
| CN101404822A (en) * | 2007-09-30 | 2009-04-08 | 华为技术有限公司 | Conversation transfer method, system and equipment |
-
2009
- 2009-05-07 CN CN 200910137699 patent/CN101883443B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316204A (en) * | 2007-05-28 | 2008-12-03 | 华为技术有限公司 | Conversation moving method and conversation moving system |
| CN101404822A (en) * | 2007-09-30 | 2009-04-08 | 华为技术有限公司 | Conversation transfer method, system and equipment |
| CN101370292A (en) * | 2008-09-24 | 2009-02-18 | 深圳华为通信技术有限公司 | Method, apparatus and system for media transfer between terminals |
| CN101383827A (en) * | 2008-10-13 | 2009-03-11 | 深圳华为通信技术有限公司 | Method, apparatus and system for media transferring |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103416038A (en) * | 2011-03-08 | 2013-11-27 | 交互数字专利控股公司 | Privacy for inter-user equipment transfer subscribers |
| US9749364B2 (en) | 2011-03-08 | 2017-08-29 | Interdigital Patent Holdings, Inc. | Privacy for inter-user equipment transfer (IUT) subscribers and for remote parties involved in sessions with IUT subscribers |
| CN104272703A (en) * | 2012-05-15 | 2015-01-07 | 瑞典爱立信有限公司 | Access transfer for a drvcc mobile terminal |
| CN104272703B (en) * | 2012-05-15 | 2017-08-15 | 瑞典爱立信有限公司 | Double wireless methods for being electrically accessed transfer, double wireless it is electrically accessed mobile terminal and service is concentrated and application server for continuity |
| US9867090B2 (en) | 2012-05-15 | 2018-01-09 | Telefonaktiebolaget L M Ericsson (Publ) | Access transfer for a DRVCC mobile terminal |
| CN111918415A (en) * | 2019-05-10 | 2020-11-10 | 大唐移动通信设备有限公司 | Method and equipment for modifying double connection |
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