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WO2010022623A1 - Procédé et passerelle internet destinés à accéder à des sessions mobiles de messagerie vocale instantanée - Google Patents

Procédé et passerelle internet destinés à accéder à des sessions mobiles de messagerie vocale instantanée Download PDF

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Publication number
WO2010022623A1
WO2010022623A1 PCT/CN2009/072924 CN2009072924W WO2010022623A1 WO 2010022623 A1 WO2010022623 A1 WO 2010022623A1 CN 2009072924 W CN2009072924 W CN 2009072924W WO 2010022623 A1 WO2010022623 A1 WO 2010022623A1
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WIPO (PCT)
Prior art keywords
request
terminal
session
media
message
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/072924
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English (en)
Chinese (zh)
Inventor
卞永刚
牟伦建
王珏
许国军
梁刚
黄成�
张永靖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2010022623A1 publication Critical patent/WO2010022623A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method for accessing a push-to-talk over-the-air session and an Internet gateway.
  • POC Push to talk over Cellular
  • POC Push to talk over Cellular
  • SIP Session Initiated Protocol
  • TBCP Talk Burst Control Protocol
  • MBCP Media Burst Control Protocol
  • the prior art realizes the conversion of signaling through the Internet.
  • a terminal channel is established between the terminal and the POC conference center.
  • the media stream is sent to the Internet through the Internet, and the Internet buffers the media stream, and then is responsible to the POC.
  • the entity controlled by the floor requests the right to speak.
  • the inventor found that when the terminal needs to speak, it needs to send the media stream first, and after the Internet receives the media stream sent by the terminal, the negotiation of the floor is performed, and the terminal media stream arrives. There is a delay in the session center.
  • the end user who participates in the POC tongue can send the session for a long time before being received by other terminal users. The user experience is poor.
  • the negotiation of the floor is performed. Whether it is possible to speak a media stream that needs to send a speech first, the end user experience is poor.
  • the technical problem to be solved by the embodiments of the present invention is to provide a method for accessing a wireless push-to-talk session and an Internet gateway, which can reduce session delay and improve user experience.
  • a method for accessing a push-to-talk over-the-air session includes:
  • Receiving a speech request sent by the terminal after receiving the speech request sent by the terminal, sending a media pulse request to the floor control entity; receiving a media pulse grant message returned by the floor control entity; receiving the media pulse grant After the message, the message that the speech request is accepted is sent to the terminal; after the message that the speech request is accepted is sent to the terminal, the media stream sent by the terminal is received.
  • An Internet gateway that includes:
  • a speech negotiation unit configured to receive a speech request sent by the terminal; after receiving the speech request sent by the terminal, send a media pulse request to the floor control entity; and the speech negotiation result sending unit is configured to receive in the speech negotiation unit After the media pulse grant message, the message that the speech request is accepted is sent to the terminal.
  • the embodiment of the present invention firstly receives a request for speaking of the terminal, and sends a media pulse request to the floor control entity to perform negotiation of the floor. After receiving the request for the media pulse, the floor control entity sends the request to the terminal. The message requesting the acceptance of the message; after the message of the speech request acceptance is sent to the terminal, the terminal can send the media stream of the speech. In the prior art, the media stream sent by the terminal is received first, and then the floor control entity negotiates the floor.
  • the technical solution of the embodiment of the present invention can reduce the speaking delay of the terminal and enhance the experience of the terminal user, as compared with the prior art.
  • FIG. 1 is a view showing a first embodiment of a method for accessing a POC tongue provided by the present invention
  • FIG. 2 is a view showing a second embodiment of a method for accessing a POC tongue provided by the present invention
  • FIG. 3 is a diagram showing a third embodiment of a method for accessing a POC session provided by the present invention.
  • FIG. 4 is a diagram showing a fourth embodiment of a method for accessing a POC session provided by the present invention.
  • FIG. 5 is a diagram showing an Internet infrastructure structure provided by an embodiment of the present invention.
  • the embodiment of the invention provides a method for accessing a wireless push-to-talk session.
  • Embodiments of the present invention also provide corresponding Internet gateways. The details are described below separately.
  • Embodiment 1 In this embodiment, before the terminal speaks, the voice request is sent to the Internet gateway, and the Internet gateway and the floor control entity perform the negotiation of the floor. After the negotiation succeeds, the terminal sends the media stream of the voice. Reduce the delay of the terminal.
  • the negotiation of the floor is performed before the media stream is sent, and if the floor cannot be obtained, the media stream does not need to be sent. Compared with the prior art, the media stream is received first, and then the negotiation of the floor is performed. The solution of the embodiments of the invention can enhance the user experience of the speaking terminal.
  • FIG. 1 is a diagram showing a first embodiment of a method for accessing a push-to-talk over-the-spot session provided by the present invention.
  • Step 101 Receive a request for speaking sent by the terminal.
  • Step 102 Send a media pulse request to a floor control entity.
  • the media pulse request is sent to the floor control entity.
  • Step 103 Receive a media pulse grant message returned by the floor control entity.
  • Step 104 Send a message to the terminal to accept the request for the message
  • the terminal After receiving the media pulse grant message, the terminal sends a message to the terminal to accept the message; after transmitting the message to the terminal to receive the message, the terminal receives the media stream sent by the terminal.
  • Embodiment 2 A speech request is sent before the speech, and a speech negotiation is performed.
  • the process of accessing the POC session is described by using the SIP terminal as the access to the POC session.
  • the method for accessing the push-to-talk over the session provided by the embodiment of the present invention is not limited to the SIP terminal, and may also be applied to support other protocols. Terminal, this other protocol supports the modification of the direction of the session media.
  • FIG. 2 is a diagram showing a second embodiment of a method for accessing a push-to-talk over-the-spot session provided by the present invention.
  • Step 201 The terminal sends a session establishment request to the Internet gateway.
  • the SIP terminal sends a SIP INVITE request to the Internet to request to establish a session.
  • Step 202 The Internet gateway establishes a tongue request to perform signaling conversion
  • the Internet gateway converts the SIP INVITE request sent by the SIP terminal into a SIP INVITE request held by the POC service, for example, adding a support description for the POC feature in the header field.
  • the embodiment of the invention is also applicable to the SIP terminal accessing other PTT (push to talk)
  • the system only needs to convert the SIP INVITE request into the corresponding join request of other PTT systems.
  • Step 203 The Internet gateway sends a session establishment request for signaling conversion to the POC conference center.
  • the POC conference center (Focus) is mainly responsible for forwarding the media stream sent by the terminal to other terminals participating in the session.
  • Step 204 The POC sense center returns a setup request response message to the Internet gateway.
  • the conference center returns a setup session request response message to the Internet gateway, and step 205 is performed.
  • Step 205 The Internet gateway establishes a session request response message for signaling conversion.
  • the Internet gateway converts the SIP response message returned by the conference center into a SIP response message that the SIP terminal can receive.
  • Step 206 The Internet gateway sends a setup session request response message for performing signaling conversion to the terminal.
  • the setup session request response message for performing signaling conversion modifies the session media direction to be one-way; and restricts the SIP terminal to only receive the media stream sent by the Internet gateway. , can not send media streams to the Internet.
  • step 207 is executed to send a speech request.
  • the foregoing process is a process in which the terminal initiates a session request to the POC conference center and finally establishes a session channel.
  • the POC conference center may initiate a session establishment request, perform signaling conversion and message forwarding through the Internet gateway, and finally the terminal sends a setup session request response message to the poc sense center, indicating that the POC conference is accepted.
  • the session initiated by the center establishes a session request, and establishes a session channel between the terminal and the POC conference center.
  • the above process establishes a session channel between the terminal and the POC conference center, and the session channel is a session channel that only allows the terminal to receive media.
  • Step 207 The terminal sends a request for speaking to the Internet gateway.
  • the request for the speech carries a request to modify the direction of the session media to be bidirectional, and requests to modify the media direction to allow the terminal to send the media.
  • the SIP terminal may send a SIP re-INVITE request to the Internet to request to modify the media direction.
  • the SIP re-INVITE request may be a request to modify the session media direction to allow the terminal to send media; the modification session
  • the media direction triggers the Internet to turn to the floor control entity to obtain the floor for the request to allow the terminal to send the media.
  • Step 208 The Internet shuts down the floor control entity to send a media pulse request.
  • the floor control entity determines that the media pulse transmission right can be granted, and step 209 is performed.
  • Step 209 The floor control entity sends a media pulse grant message to the Internet gateway.
  • Step 210 The Internet gateway sends a message to the terminal to accept the request for the speech;
  • the speech request accepts the message accepting a request to modify the direction of the session media to be bidirectional.
  • the Internet sends a message to the terminal after receiving the media pulse grant message sent by the floor control entity.
  • the SIP 200 OK response message indicates that the terminal is requested to modify the media direction. After the terminal receives the response message of the SIP 200 OK, the terminal can send the media stream to the center through the Internet.
  • the media pulse is released to the floor control entity.
  • the request is sent to the terminal to modify the media stream direction message, and the direction of the media stream is modified to allow only the terminal to receive the media stream.
  • the preset time is set on the Internet, and can be set by a person skilled in the art according to a specific situation, and will not be described here.
  • the Internet after transmitting the message of the speech request acceptance to the terminal within a certain time, receives the media pulse retrieving request sent by the floor control entity, and sends the modified media stream to the terminal.
  • Direction message modify the direction of the media stream to allow only the terminal to receive the media stream.
  • the certain time may be the speaking time given to the terminal user of each participating POC session controlled by the floor control entity, which is determined by the floor control entity, and is not described herein.
  • This embodiment describes that, after receiving the speech request sent by the terminal, the Internet does not negotiate with the floor control entity to determine the failure of the floor.
  • the floor control entity refuses to grant the pulse request after receiving the media pulse request sent by the Internet.
  • FIG. 3 is a diagram showing a third embodiment of a method for accessing a push-to-talk over-the-spot session provided by an embodiment of the present invention.
  • Step 301 The terminal sends a session establishment request to the Internet gateway.
  • the SIP terminal sends a SIP INVITE request to the Internet to request to establish a session.
  • Step 302 The Internet gateway establishes a tongue request for signaling conversion;
  • the Internet gateway converts the SIP INVITE request sent by the SIP terminal into a SIP INVITE request held by the POC service, for example, adding a support description for the POC feature in the header field.
  • the embodiment of the present invention is also applicable to the SIP terminal accessing other PTT (Push To Talk) systems, and only needs to convert the SIP INVITE request into a corresponding join request of other PTT systems.
  • PTT Push To Talk
  • Step 303 The Internet gateway sends a session establishment request for signaling conversion to the POC conference center.
  • the POC conference center (Focus) is mainly responsible for forwarding the media stream sent by the terminal to other terminals participating in the session.
  • Step 304 The POC sense center returns a setup request response message to the Internet gateway.
  • the conference center returns a setup session request response message to the Internet gateway, and step 305 is performed.
  • Step 305 The Internet gateway establishes a session request response message for signaling conversion.
  • the Internet gateway converts the SIP response message returned by the conference center into a SIP response message that the SIP terminal can receive.
  • Step 306 The Internet gateway sends a setup session request response message for performing signaling conversion to the terminal.
  • the setup session request response message for performing signaling conversion modifies the direction of the session media to be unidirectional; and restricts the SIP terminal to only receive the media stream sent by the Internet gateway. , can not send media streams to the Internet.
  • step 307 is executed to send a speech request.
  • the foregoing process is a process in which the terminal initiates a session request to the POC conference center and finally establishes a session channel.
  • the POC conference center may initiate a session establishment request, perform signaling conversion and message forwarding through the Internet gateway, and finally the terminal sends a session establishment request response message to the POC conference center, indicating that the POC conference is accepted.
  • the session initiated by the center establishes a session request, and establishes a session channel between the terminal and the POC conference center.
  • the above process establishes a session channel between the terminal and the POC conference center, and the session channel is a session channel that only allows the terminal to receive media.
  • Step 307 The terminal sends a request for speaking to the Internet gateway.
  • the request for the speech carries a request to modify the direction of the session media to be bidirectional, and requests to modify the media direction to allow the terminal to send the media.
  • the SIP terminal sends a SIP re-INVITE request to the Internet to request to modify the media direction.
  • the SIP re-INVITE request may be to modify the session media direction to allow The terminal sends a request for the media; the request to modify the session media direction to allow the terminal to send the media triggers the Internet to negotiate the right to speak to the floor control entity.
  • Step 308 The Internet shuts down the floor control entity to send a media pulse request.
  • step 309 is performed.
  • Step 309 The floor control entity sends a media pulse request rejection message to the Internet gateway.
  • the floor control entity refuses to grant the floor to the terminal.
  • step 310 is performed.
  • Step 310 The Internet gateway sends a speech request rejection message to the terminal.
  • the request request rejection message carries a request to refuse to modify the direction of the session media to be bidirectional; in the SIP protocol, the step of the Internet gateway sending the SIP terminal may be a SIP 200 OK response message, and the response message rejects the request to modify the direction of the session medium. At this time, the terminal cannot send the media stream through the Internet to the center, and cannot speak.
  • the floor control entity determines that the terminal that is currently requesting to speak may be given the right to speak, but needs to wait for other requests to speak. After the terminal finishes speaking, and then starts speaking, the floor control entity sends a media pulse request waiting message to the Internet.
  • the specific steps are as follows:
  • FIG. 4 is a diagram showing a fourth embodiment of an access POC session provided by an embodiment of the present invention.
  • Step 401 The terminal sends a setup request to the Internet gateway.
  • the SIP terminal sends a SIP INVITE request to the Internet to request to establish a session.
  • Step 402 The Internet gateway establishes a tongue request to perform signaling conversion
  • the Internet gateway converts the SIP INVITE request sent by the SIP terminal into a SIP INVITE request held by the POC service, for example, adding a support description for the POC feature in the header field.
  • the embodiment of the present invention is also applicable to the SIP terminal accessing other PTT (Push To Talk) systems, and only needs to convert the SIP INVITE request into a corresponding join request of other PTT systems.
  • PTT Push To Talk
  • Step 403 The Internet gateway sends a session establishment request for signaling conversion to the POC conference center.
  • the POC conference center (Focus) is mainly responsible for forwarding the media stream sent by the terminal in the POC service. Go to other terminals participating in the session.
  • Step 404 The POC sense center returns a setup request response message to the Internet gateway.
  • the conference center returns a setup session request response message to the Internet gateway, and step 405 is performed.
  • Step 405 The Internet gateway establishes a session request response message for signaling conversion.
  • the Internet gateway converts the SIP response message returned by the conference center into a SIP response message that the SIP terminal can receive.
  • Step 406 The Internet gateway sends a setup session request response message for performing signaling conversion to the terminal.
  • the setup session request response message for performing signaling conversion modifies the direction of the session media to be unidirectional; and restricts the SIP terminal to only receive the media stream sent by the Internet gateway. , can not send media streams to the Internet.
  • step 407 is executed to send a speech request.
  • the foregoing process is a process in which the terminal initiates a session request to the POC conference center and finally establishes a session channel.
  • the POC conference center may also initiate a session establishment request, perform signaling conversion and message forwarding through the Internet gateway, and finally the terminal sends a setup session request response message to the POC conference center, indicating that the POC conference center is initiated. Establish a session request, establish a session channel between the terminal and the POC conference center.
  • the above process establishes a session channel between the terminal and the POC conference center, and the session channel is a session channel that only allows the terminal to receive media.
  • Step 407 The terminal sends a request for speaking to the Internet gateway.
  • the request for the speech carries a request to modify the direction of the session media to be bidirectional, and requests to modify the media direction to allow the terminal to send the media.
  • the SIP terminal may send a SIP re-INVITE request to the Internet to request to modify the media direction.
  • the SIP re-INVITE request may be a request to modify the session media direction to allow the terminal to send media, and modify the session media.
  • the direction is to allow the terminal to send the media request to trigger the Internet to the floor control entity to negotiate to obtain the floor.
  • Step 408 The Internet shuts down the floor control entity to send a media pulse request.
  • the floor control entity judges that the Internet can be given the right to speak, but needs to wait for other terminal users to finish speaking, and then step 409 is performed.
  • Step 409 The floor control entity sends a media pulse request waiting message to the Internet gateway. After the Internet gateway receives the media pulse request waiting message sent by the floor control entity, step 410 is performed first.
  • Step 410 The Internet gateway sends a speech request rejection message to the terminal.
  • the request request rejection message rejects the request to modify the direction of the session media to be bidirectional.
  • the step that the Internet gateway sends to the SIP terminal may be a SIP 200 OK response, and the response message carries a request to refuse to modify the direction of the session media.
  • step 411 is performed.
  • Step 411 The Internet gateway sends a message to modify the direction of the session media to be bidirectional; and the message that the direction of the session media is bidirectional indicates that the terminal is allowed to send the media stream to the Internet.
  • the terminal user After the terminal receives the message of modifying the direction of the session media sent by the Internet, the terminal user returns to the Internet to return a message for modifying the direction of the session media if the terminal user still needs to speak; if the terminal user does not need to speak at this time, the terminal is closed to the Internet. Returning a message rejecting the modification of the session media direction to two-way, the Internet closes to step 412.
  • Step 412 The Internet shuts down the floor control entity to send a media pulse release request.
  • the Internet shuts down the floor control entity to send a request for media pulse release requesting release of the granted media pulse.
  • the Internet gateway does not receive the media stream sent by the terminal within the preset time.
  • the entity sends a media pulse release request, and sends a message to the terminal to modify the direction of the session media to be one-way.
  • the message only allows the terminal to receive the media stream of the Internet, and does not allow the terminal to send the media to the Internet.
  • the preset time is set on the Internet, and can be set by a person skilled in the art according to a specific situation, and details are not described herein.
  • the Internet shuts down the media pulse retrieving request sent by the floor control entity within a certain period of time
  • the Internet The off-end terminal sends a message to modify the direction of the session media to be one-way.
  • the message only allows the terminal to receive the media stream sent by the Internet, and does not allow the terminal to send the media to the Internet.
  • the certain time may be given by the floor control entity to each terminal participating in the POC session. The speaking time of the household is determined by the floor control entity and will not be described here.
  • an embodiment of the present invention further provides an Internet gateway.
  • FIG. 5 is a diagram showing an Internet infrastructure structure provided by an embodiment of the present invention.
  • Internet gateways include:
  • the speech negotiation unit 510 is configured to receive a speech request sent by the terminal, and send a media pulse request to the floor control entity after receiving the speech request sent by the terminal;
  • the utterance negotiation result transmitting unit 520 is configured to send, after the utterance negotiation unit receives the media pulse grant message, the message that the utterance request is accepted to the terminal.
  • the foregoing Internet gateway further includes:
  • the session unit 530 is configured to establish a session channel between the terminal and the POC conference center.
  • the session channel is a session channel that allows only the terminal to receive media.
  • the establishing the session unit includes: a session request unit and a session request result sending unit; the session requesting unit is configured to receive the establishment session request sent by the terminal; and send the established session request to the POC conference center;
  • the session request result sending unit is configured to receive the foregoing after sending the establishment session request
  • the session establishment request response message returned by the POC conference center is sent to the terminal, and the establishment session request response message modifies the session media direction to be one-way;
  • the semaphore request sent by the terminal received by the utterance negotiation unit 510 carries a request to modify the direction of the session media to be two-way;
  • the utterance request accepting message sent by the utterance negotiation result sending unit 520 to the terminal carries a request to accept the direction of the modified session medium as two-way.
  • the speech result sending unit 520 is further configured to: after transmitting the media pulse request to the floor control entity, receive a media pulse request rejection message returned by the floor control entity; and receive the speech After the media pulse request rejection message returned by the weight control entity, the device sends a speech request rejection message to the terminal, where the message request rejection message carries a request to reject the modification of the session media direction to be bidirectional.
  • the speech result sending unit 520 is further configured to: after transmitting the media pulse request to the floor control entity, receive the media returned by the floor control entity.
  • the body pulse request waiting message ; sending a speech request rejection message to the terminal, wherein the speech request rejection message carries a request to reject the modification of the session media direction to be bidirectional.
  • the foregoing Internet gateway may further include: a media direction negotiation unit
  • the media direction negotiating unit 540 is further configured to: after receiving the message that the modified media direction is bidirectional to the terminal, receive a message that the direction of the modified session media returned by the terminal is bidirectional.
  • the media direction negotiating unit 540 is further configured to: after sending the message that the modified media direction is bidirectional to the terminal, receive a message that the terminal returns a direction of rejecting the modification of the session media to be bidirectional; A media pulse release request is sent to the floor control entity.
  • the process of implementing the method of the above embodiments may be performed by hardware related to program instructions, and the program may be stored in a readable storage medium, and the program executes the above method when executed. Corresponding steps.
  • the storage medium may be, for example, a ROM/RAM, a magnetic disk, an optical disk, or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Cette invention se rapporte à un procédé et à une passerelle Internet destinés à accéder à des sessions mobiles de messagerie vocale instantanée (POC). Une demande de session transmise par un terminal est reçue (101). Une demande d'impulsion multimédia est transmise à une entité de contrôle de parole (102). Un message d'autorisation d'impulsion multimédia transmis par l'entité de contrôle de parole est reçu (103). Un message d'acceptation de demande de session est transmis au terminal (104).
PCT/CN2009/072924 2008-08-25 2009-07-27 Procédé et passerelle internet destinés à accéder à des sessions mobiles de messagerie vocale instantanée Ceased WO2010022623A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2008101468263A CN101662730B (zh) 2008-08-25 2008-08-25 一种接入poc会话的方法及互联网关
CN200810146826.3 2008-08-25

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WO2010022623A1 true WO2010022623A1 (fr) 2010-03-04

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CN107248921A (zh) * 2017-07-21 2017-10-13 北京阿德和合科技有限公司 一种会议方法、客户端及应用其的系统

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2007081180A1 (fr) * 2006-01-13 2007-07-19 Samsung Electronics Co., Ltd. Dispositif de terminal et procédé pour la fourniture d'information de temps de transmission multimédia dans un système de messagerie vocale instantanée sur cellulaire et système de messagerie vocale instantanée sur cellulaire de mise en oeuvre
CN101047529A (zh) * 2006-03-28 2007-10-03 华为技术有限公司 媒体会话数据发送控制方法、控制关系协商方法及控制系统
WO2008007869A1 (fr) * 2006-07-10 2008-01-17 Samsung Electronics Co., Ltd. Procédé permettant de transférer et appliquer un mécanisme de commande de prise de parole dans une session poc et système destiné à la mise en oeuvre dudit procédé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007081180A1 (fr) * 2006-01-13 2007-07-19 Samsung Electronics Co., Ltd. Dispositif de terminal et procédé pour la fourniture d'information de temps de transmission multimédia dans un système de messagerie vocale instantanée sur cellulaire et système de messagerie vocale instantanée sur cellulaire de mise en oeuvre
CN101047529A (zh) * 2006-03-28 2007-10-03 华为技术有限公司 媒体会话数据发送控制方法、控制关系协商方法及控制系统
WO2008007869A1 (fr) * 2006-07-10 2008-01-17 Samsung Electronics Co., Ltd. Procédé permettant de transférer et appliquer un mécanisme de commande de prise de parole dans une session poc et système destiné à la mise en oeuvre dudit procédé

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CN101662730A (zh) 2010-03-03

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