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CN101662730B - Method and internet gateway for accessing POC session - Google Patents

Method and internet gateway for accessing POC session Download PDF

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Publication number
CN101662730B
CN101662730B CN2008101468263A CN200810146826A CN101662730B CN 101662730 B CN101662730 B CN 101662730B CN 2008101468263 A CN2008101468263 A CN 2008101468263A CN 200810146826 A CN200810146826 A CN 200810146826A CN 101662730 B CN101662730 B CN 101662730B
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China
Prior art keywords
request
terminal
session
media
message
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CN101662730A (en
Inventor
卞永刚
牟伦建
王珏
许国军
梁刚
黄成�
张永靖
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN2008101468263A priority Critical patent/CN101662730B/en
Priority to PCT/CN2009/072924 priority patent/WO2010022623A1/en
Publication of CN101662730A publication Critical patent/CN101662730A/en
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    • 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

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

Abstract

发明公开了一种接入POC会话的方法及互联网关。所述方法包括：接收终端发送的发言请求；在接收到所述终端发送的发言请求后，向发言权控制实体发送媒体脉冲请求；接收所述发言权控制实体返回的媒体脉冲授予消息；在接收所述媒体脉冲授予消息后，向所述终端发送所述发言请求接受的消息；向所述终端发送所述发言请求接受的消息后，接收所述终端发送的媒体流。本发明技术方案由于先进行发言权的协商，减少终端发言的时延。

Figure 200810146826

The invention discloses a method for accessing a POC session and an Internet gateway. The method includes: receiving a speaking request sent by a terminal; after receiving the speaking request sent by the terminal, sending a media burst request to a floor control entity; receiving a media burst grant message returned by the floor control entity; receiving After the media pulse grant message, send the speech request acceptance message to the terminal; after sending the speech request acceptance message to the terminal, receive the media stream sent by the terminal. The technical scheme of the present invention reduces the time delay of the terminal speaking because the negotiation of the speaking right is carried out first.

Figure 200810146826

Description

A kind of method and Interworking GateWay that inserts the POC session
Technical field
The present invention relates to communication technical field, be specifically related to a kind of method and Interworking GateWay of the POC of access session.
Background technology
Push to talk over Cellular (POC, Push to talk over Cellular) business is based on mobile network's semiduplex point-to-point or puts many language professional.Along with the continuous development of the communication technology, initial session protocol (SIP, Session Initiated Protocol) is supported at increasing terminal.In order to realize the interconnected of different business, promptly the terminal use uses an account working just can conveniently experience other business, and for example, sip terminal uses POC professional, participates in the POC session.But speech pulse control protocol (TBCP must be supported in the terminal of participating in the POC session; Talk Burst Control Protocol) or media pulse control protocol (MBCP; Media Burst Control Protocol); When other do not support that the user of TBCP or MBCP function participates in the POC session, need certain mechanism to realize speech.
Prior art realizes the conversion of signaling through Interworking GateWay; At first set up session channel, when need make a speech in the terminal, earlier Media Stream is mail to through Interworking GateWay at terminal and POC conference centre; Interworking GateWay buffered media stream is responsible for the entity requests right to speak that right to speak is controlled again in POC.In research and practice process to prior art; The present inventor finds; In the time of need making a speech at the terminal; Need to send earlier Media Stream; Interworking GateWay is received after the Media Stream that sends at the terminal, just carries out the negotiation of right to speak, and terminal media flows to and reaches the session center and have time delay; The terminal use who participates in the POC session sends session and for a long time afterwards could be received poor user experience by other terminal use; In addition, Interworking GateWay is received after the Media Stream that sends at the terminal, just carries out the negotiation of right to speak, and the Media Stream whether can make a speech needs to send speech earlier knows that just end-user experience is poor.
Summary of the invention
The embodiment of the invention provides a kind of method, system and Interworking GateWay of the POC of access session, can reduce the session time delay, improves user experience.
A kind of method that inserts the POC session comprises:
The speaking request that receiving terminal sends; After receiving the speaking request of sending at said terminal, send the media pulse request to speaking right controlling entity; Receive the media pulse grant message that said speaking right controlling entity is returned; After receiving said media pulse grant message, send the message that said speaking request is accepted to said terminal; Send the message of said speaking request acceptance to said terminal after, receive the Media Stream that send at said terminal.
A kind of Interworking GateWay comprises:
The speech negotiation element is used for the speaking request that receiving terminal sends; After receiving the speaking request of sending at said terminal, send the media pulse request to speaking right controlling entity; Speech negotiation result transmitting element is used for after said speech negotiation element receives said media pulse grant message, sends the message that said speaking request is accepted to said terminal.
Can know by the foregoing description technical scheme; Because the speaking request of embodiment of the invention elder generation receiving terminal is sent the media pulse request to speaking right controlling entity, carries out the negotiation of right to speak; After speaking right controlling entity is accepted this media pulse request, send the message that speaking request is accepted to the terminal again; Send the message of said speaking request acceptance to said terminal after, the Media Stream of speech just can be sent in the terminal.And the Media Stream that first receiving terminal sends in the prior art carries out the negotiation of right to speak again with speaking right controlling entity.With respect to also carrying out the negotiation of right to speak behind the prior art terminal transmission Media Stream, the embodiment of the invention reduces the speech time delay at terminal, strengthens end-user experience.。
Description of drawings
Fig. 1 shows the method first of access POC provided by the invention session and implements illustration;
Fig. 2 shows the method second of access POC provided by the invention session and implements illustration;
Fig. 3 shows the method the 3rd of access POC provided by the invention session and implements illustration;
Fig. 4 shows the method the 4th of access POC provided by the invention session and implements illustration;
Fig. 5 shows the Interworking GateWay structure chart that the embodiment of the invention provides.
Embodiment
The embodiment of the invention provides a kind of method of the POC of access session.The embodiment of the invention also provides corresponding Interworking GateWay.Below be elaborated respectively.
Embodiment one
Present embodiment before the speech of terminal, sends speaking request to Interworking GateWay earlier, and Interworking GateWay and speaking right controlling entity are carried out the negotiation of right to speak; After consulting successfully, the Media Stream of redispatching and make a speech in the terminal.Reduce the speech time delay at terminal.In addition,, before sending Media Stream, carry out the negotiation of right to speak,, then need not send Media Stream if can not obtain the floor for the terminal of speech; With respect to first receiving media stream in the prior art, carry out the negotiation of right to speak again, the embodiment of the invention strengthens the speech end-user experience.
Fig. 1 shows the method first of access POC provided by the invention session and implements illustration.
The speaking request that step 101, receiving terminal send;
Step 102, send the media pulse request to speaking right controlling entity;
After receiving the speaking request of sending at said terminal, send the media pulse request to speaking right controlling entity.
The media pulse grant message that step 103, reception speaking right controlling entity are returned;
Step 104, send the message that speaking request is accepted to the terminal;
After receiving media pulse grant message, send the message that speaking request is accepted to the terminal; Send the message of said speaking request acceptance to the terminal after, receive the Media Stream that send at said terminal.
Embodiment two
The present embodiment explanation is concrete through the media session direction between terminal and the Interworking GateWay, and speaking request is sent, the negotiation of making a speech in the realization terminal before speech.
It is the flow process that the example explanation inserts the POC session that present embodiment inserts the POC session with sip terminal; The method of the access POC session that the embodiment of the invention provides is not limited to and is applied to sip terminal; Also can be applied to support the terminal of other agreements, these other agreements are supported the modification of conversation media direction.
Fig. 2 shows the method second of access POC provided by the invention session and implements illustration.
Step 201, terminal are sent to Interworking GateWay and are set up conversation request;
In Session Initiation Protocol, this step sip terminal is SIP INVITE request to the Interworking GateWay transmission, and session is set up in request.
Step 202, Interworking GateWay will be set up conversation request and carry out the signaling conversion;
The SIP INVITE request that Interworking GateWay sends sip terminal converts the SIPINVITE request that the POC business is held to, for example in header field, increases the support of POC characteristic is described.
The present invention is adapted to PTT (push to talk a, key the is logical) system that sip terminal inserts other equally, only need convert SIP INVITE request to other PTT systems and add request for conference accordingly.
Step 203, Interworking GateWay send the conversation request of setting up of carrying out the signaling conversion to POC conference centre;
POC conference centre (Focus), main being responsible for is forwarded to the terminal that other participate in session with the Media Stream that send at the terminal in the POC business.
Step 204, POC conference centre return to Interworking GateWay and set up the conversation request response message;
Conference centre returns to Interworking GateWay and sets up the conversation request response message, execution in step 205.
Step 205, Interworking GateWay will be set up the conversation request response message and carry out the signaling conversion;
The sip response message that Interworking GateWay returns the meeting center converts the sip response message that sip terminal can receive to.
Step 206, Interworking GateWay to the terminal send carry out the signaling conversion set up the conversation request response message;
This carries out the conversation request response message of setting up of signaling conversion, and to revise the conversation media direction be unidirectional; The restriction sip terminal can only receive the Media Stream that Interworking GateWay sends, and can not send Media Stream to Interworking GateWay.
If the sip terminal user will make a speech sometime, then execution in step 207, send speaking request.
To be the terminal initiate to set up conversation request, finally set up the process of session channel to POC conference centre said process.As one embodiment of the present of invention; Also can POC conference centre initiate to set up conversation request; Carry out the conversion of signaling and the forwarding of message through Interworking GateWay; Last terminal is sent to POC conference centre and is set up the conversation request response message, and the conversation request of setting up of POC conference centre initiation is accepted in expression, sets up the session channel of terminal and POC conference centre.
Said process is set up the session channel of terminal and POC conference centre, and this session channel is for only allowing the session channel of terminal receiving media.
Speaking request is sent to Interworking GateWay in step 207, terminal;
Carrying in the speaking request and revising the conversation media direction is two-way request, and request is revised as the medium direction and allows the terminal to send medium.
In Session Initiation Protocol, this step sip terminal is SIP re-INVITE request to the Interworking GateWay transmission, and the medium direction is revised in request, and this SIP re-INVITE request is that modification conversation media direction is sent the request of medium for allowing the terminal; This modification conversation media direction consults to obtain right to speak for the request trigger Interworking GateWay that allows the terminal to send medium to speaking right controlling entity.
Step 208, Interworking GateWay send the media pulse request to speaking right controlling entity;
Speaking right controlling entity judges that can authorize media pulse sends right, execution in step 209.
Step 209, speaking right controlling entity are sent the media pulse grant message to Interworking GateWay;
Step 210, Interworking GateWay send the message that speaking request is accepted to the terminal;
It is two-way request that this speaking request is accepted message acceptance modification conversation media direction.
Interworking GateWay sends the SIP200OK response message to the terminal after receiving the media pulse grant message that speaking right controlling entity is sent, the request of the modification medium direction of expression receiving terminal.After the response message of SIP200OK was received at the terminal, Media Stream can be sent to conference centre through Interworking GateWay in the terminal.
As one embodiment of the present of invention; Send the message of said speaking request acceptance to said terminal after; If in preset time, Interworking GateWay does not receive the Media Stream that send at the terminal, then sends media pulse to speaking right controlling entity and discharges request; And, revise the Media Stream direction for only allowing terminal receiving media stream to terminal transmission modification Media Stream direction message.。This preset time is set on Interworking GateWay, and those skilled in the art can be provided with according to specific circumstances, do not give unnecessary details at this.
As one embodiment of the present of invention; In the regular hour; Send the message of said speaking request acceptance to said terminal after; Interworking GateWay is received the media pulse request of recalling that speaking right controlling entity is sent, and sends to the terminal and revises Media Stream direction message, revises the Media Stream direction for only allowing terminal receiving media stream.This certain hour is the time limit of speech that each participates in the terminal use of POC session that gives of speaking right controlling entity control, by the speaking right controlling entity decision, does not give unnecessary details at this.
Embodiment three
This embodiment describes, and after Interworking GateWay is received the speaking request of sending at the terminal, consults the situation that right to speak is failed with speaking right controlling entity; Speaking right controlling entity is after receiving the media pulse request that Interworking GateWay sends, and refusal is authorized the pulse request.
Concrete steps are following:
Fig. 3 shows the method the 3rd of access POC provided by the invention session and implements illustration.
Step 301, terminal are sent to Interworking GateWay and are set up conversation request;
In Session Initiation Protocol, this step sip terminal is SIP INVITE request to the Interworking GateWay transmission, and session is set up in request.
Step 302, Interworking GateWay will be set up conversation request and carry out the signaling conversion;
The SIP INVITE request that Interworking GateWay sends sip terminal converts the SIPINVITE request that the POC business is held to, for example in header field, increases the support of POC characteristic is described.
The present invention is adapted to PTT (push to talk a, key the is logical) system that sip terminal inserts other equally, only need convert SIP INVITE request to other PTT systems and add request for conference accordingly.
Step 303, Interworking GateWay send the conversation request of setting up of carrying out the signaling conversion to POC conference centre;
POC conference centre (Focus), main being responsible for is forwarded to the terminal that other participate in session with the Media Stream that send at the terminal in the POC business.
Step 304, POC conference centre return to Interworking GateWay and set up the conversation request response message;
Conference centre returns to Interworking GateWay and sets up the conversation request response message, execution in step 305.
Step 305, Interworking GateWay will be set up the conversation request response message and carry out the signaling conversion;
The sip response message that Interworking GateWay returns the meeting center converts the sip response message that sip terminal can receive to.
Step 306, Interworking GateWay to the terminal send carry out the signaling conversion set up the conversation request response message;
This carries out the conversation request response message of setting up of signaling conversion, and to revise the conversation media direction be unidirectional; The restriction sip terminal can only receive the Media Stream that Interworking GateWay sends, and can not send Media Stream to Interworking GateWay.
If the sip terminal user will make a speech sometime, then execution in step 307, send speaking request.
To be the terminal initiate to set up conversation request, finally set up the process of session channel to POC conference centre said process.As one embodiment of the present of invention; Also can POC conference centre initiate to set up conversation request; Carry out the conversion of signaling and the forwarding of message through Interworking GateWay; Last terminal is sent to POC conference centre and is set up the conversation request response message, and the conversation request of setting up of POC conference centre initiation is accepted in expression, sets up the session channel of terminal and POC conference centre.
Said process is set up the session channel of terminal and POC conference centre, and this session channel is for only allowing the session channel of terminal receiving media.
Speaking request is sent to Interworking GateWay in step 307, terminal;
Carrying in the speaking request and revising the conversation media direction is two-way request, and request is revised as the medium direction and allows the terminal to send medium.
In Session Initiation Protocol, this step sip terminal is SIP re-INVITE request to the Interworking GateWay transmission, and the medium direction is revised in request, and this SIP re-INVITE request is that modification conversation media direction is sent the request of medium for allowing the terminal; This modification conversation media direction consults to obtain right to speak for the request trigger Interworking GateWay that allows the terminal to send medium to speaking right controlling entity.
Step 308, Interworking GateWay send the media pulse request to speaking right controlling entity;
If the request of speech controlled entity refusal Interworking GateWay, execution in step 309.
Step 309, speaking right controlling entity are sent media pulse request refuse information to Interworking GateWay;
Speaking right controlling entity refusal granting terminal right to speak, after Interworking GateWay is received the media pulse request refuse information of speaking right controlling entity transmission, execution in step 310.
Step 310, Interworking GateWay send the speaking request refuse information to the terminal;
Carrying refusal modification conversation media direction in this speaking request refuse information is two-way request;
In Session Initiation Protocol, this step Interworking GateWay is the SIP200OK response message to the sip terminal transmission, and this response message refusal is revised the request of conversation media direction.At this moment, Media Stream can not be sent to conference centre through Interworking GateWay in the terminal, can not make a speech.
Embodiment four
This embodiment describes; Interworking GateWay is after speaking right controlling entity is sent the media pulse request; If the terminal use that current request is made a speech is more, speaking right controlling entity is judged the terminal right to speak that can give the current request speech, but after needing to wait for that other terminal of asking speech speeches finish; Begin speech again, then speaking right controlling entity waits for the arrival of news to the request of Interworking GateWay transmission media pulse.Step specific as follows:
Fig. 4 shows the 4th of access POC provided by the invention session and implements illustration.
Step 401, terminal are sent to Interworking GateWay and are set up conversation request;
In Session Initiation Protocol, this step sip terminal is SIP INVITE request to the Interworking GateWay transmission, and session is set up in request.
Step 402, Interworking GateWay will be set up conversation request and carry out the signaling conversion;
The SIP INVITE request that Interworking GateWay sends sip terminal converts the SIPINVITE request that the POC business is held to, for example in header field, increases the support of POC characteristic is described.
The present invention is adapted to PTT (push to talk a, key the is logical) system that sip terminal inserts other equally, only need convert SIP INVITE request to other PTT systems and add request for conference accordingly.
Step 403, Interworking GateWay send the conversation request of setting up of carrying out the signaling conversion to POC conference centre;
POC conference centre (Focus), main being responsible for is forwarded to the terminal that other participate in session with the Media Stream that send at the terminal in the POC business.
Step 404, POC conference centre return to Interworking GateWay and set up the conversation request response message;
Conference centre returns to Interworking GateWay and sets up the conversation request response message, execution in step 405.
Step 405, Interworking GateWay will be set up the conversation request response message and carry out the signaling conversion;
The sip response message that Interworking GateWay returns the meeting center converts the sip response message that sip terminal can receive to.
Step 406, Interworking GateWay to the terminal send carry out the signaling conversion set up the conversation request response message;
This carries out the conversation request response message of setting up of signaling conversion, and to revise the conversation media direction be unidirectional; The restriction sip terminal can only receive the Media Stream that Interworking GateWay sends, and can not send Media Stream to Interworking GateWay.
If the sip terminal user will make a speech sometime, then execution in step 407, send speaking request.
To be the terminal initiate to set up conversation request, finally set up the process of session channel to POC conference centre said process.As one embodiment of the present of invention; Also can POC conference centre initiate to set up conversation request; Carry out the conversion of signaling and the forwarding of message through Interworking GateWay; Last terminal is sent to POC conference centre and is set up the conversation request response message, and the conversation request of setting up of POC conference centre initiation is accepted in expression, sets up the session channel of terminal and POC conference centre.
Said process is set up the session channel of terminal and POC conference centre, and this session channel is for only allowing the session channel of terminal receiving media.
Speaking request is sent to Interworking GateWay in step 407, terminal;
Carrying in the speaking request and revising the conversation media direction is two-way request, and request is revised as the medium direction and allows the terminal to send medium.
In Session Initiation Protocol; This step sip terminal is SIP re-INVITE request to the Interworking GateWay transmission; The medium direction is revised in request; This SIP re-INVITE request is to revise the conversation media direction to send the request of medium for allowing the terminal, revises the conversation media direction and consults to obtain right to speak for the request trigger Interworking GateWay that allows the terminal to send medium to speaking right controlling entity.
Step 408, Interworking GateWay send the media pulse request to speaking right controlling entity;
Speaking right controlling entity is judged can give the Interworking GateWay right to speak, but needs to wait for that the other-end user utterance finishes, and then execution in step 409.
Step 409, speaking right controlling entity are sent the media pulse request to Interworking GateWay and are waited for the arrival of news;
Interworking GateWay receives after media pulse request that speaking right controlling entity sends waits for the arrival of news, can first execution in step 410.
Step 410, Interworking GateWay send the speaking request refuse information to the terminal;
Refusal modification conversation media direction is two-way request in this speaking request refuse information.
In Session Initiation Protocol, this step Interworking GateWay is the SIP200OK response to the sip terminal transmission, and this response message carries the request that refusal is revised the conversation media direction.Over time, if Interworking GateWay has been received the media pulse request grant message about this terminal that speaking right controlling entity is sent, execution in step 411.
It is two-way message that step 411, Interworking GateWay send modification conversation media direction to the terminal;
Revising the conversation media direction is that two-way message representes to allow the terminal to send Media Stream to Interworking GateWay.
After the terminal received the message of the modification conversation media direction that Interworking GateWay sends, this moment, the terminal use was if also need speech, then returned the message of accepting to revise the conversation media direction to Interworking GateWay; If this moment, the terminal use did not need speech, then returning refusal modification conversation media direction to Interworking GateWay is two-way message, Interworking GateWay execution in step 412.
Step 412, Interworking GateWay send media pulse to speaking right controlling entity and discharge request;
Interworking GateWay sends the request that media pulse discharges to speaking right controlling entity, and request discharges the media pulse of authorizing.
As one embodiment of the present of invention; After Interworking GateWay received the acceptance returned at the terminal to revise the conversation media direction be two-way message, if in preset time, Interworking GateWay was not received the Media Stream that send at the terminal; Then send media pulse and discharge request to speaking right controlling entity; And send to revise the conversation media direction to the terminal be unidirectional message, and this message only allows the terminal to receive the Media Stream of Interworking GateWay, does not allow the terminal to send medium to Interworking GateWay.This preset time is set on Interworking GateWay, and those skilled in the art can be provided with according to specific circumstances, do not give unnecessary details at this.
As one embodiment of the present of invention; After Interworking GateWay receives the acceptance returned at the terminal to revise the conversation media direction is two-way message; In the regular hour, Interworking GateWay is received the media pulse request of recalling that speaking right controlling entity is sent, and it is unidirectional message that Interworking GateWay sends modification conversation media direction to the terminal; This message only allows the terminal to receive the Media Stream that Interworking GateWay sends, and does not allow the terminal to send medium to Interworking GateWay.This certain hour is the time limit of speech that each participates in the terminal use of POC session that gives of speaking right controlling entity control, by the speaking right controlling entity decision, does not give unnecessary details at this.
In conjunction with said method embodiment, the embodiment of the invention also provides a kind of Interworking GateWay.
Fig. 5 shows the Interworking GateWay structure chart that the embodiment of the invention provides.
Interworking GateWay comprises:
Speech negotiation element 510 is used for the speaking request that receiving terminal sends; After receiving the speaking request of sending at said terminal, send the media pulse request to speaking right controlling entity;
Speech negotiation result transmitting element 520 is used for after said speech negotiation element receives said media pulse grant message, sends the message that said speaking request is accepted to said terminal.
As one embodiment of the present of invention, said Interworking GateWay also comprises:
Set up conversation element 530, be used to set up the session channel of said terminal and POC conference centre; Said session channel is for only allowing the session channel of terminal receiving media.
Concrete, the said conversation element of setting up comprises: conversation request unit and conversation request be transmitting element as a result;
Said conversation request unit is used to receive the conversation request of setting up that said terminal sends; And the said conversation request of setting up sent to POC conference centre;
Said conversation request is transmitting element as a result, be used for send said set up conversation request after, what receive that said POC conference centre returns sets up the conversation request response message; Send the said conversation request response message of setting up to said terminal, saidly set up the conversation request response message to revise the conversation media direction be unidirectional;
The speaking request that send at the terminal that said speech negotiation element 510 receives is carried and revised the conversation media direction is two-way request;
The speaking request that said speech negotiation result transmitting element 520 sends to the terminal is accepted to carry in the message and accepted to revise the conversation media direction is two-way request.
As one embodiment of the present of invention, said speech is transmitting element 520 as a result, also is used for after sending said media pulse request to said speaking right controlling entity, receiving the media pulse request refuse information that said speaking right controlling entity is returned; After receiving the media pulse request refuse information that said speaking right controlling entity returns, send the speaking request refuse information to said terminal, carrying the said modification conversation media direction of refusal in the said speaking request refuse information is two-way request.
As one embodiment of the present of invention, said speech is transmitting element 520 as a result, also is used for after sending said media pulse request to said speaking right controlling entity, receives the media pulse request that said speaking right controlling entity returns and waits for the arrival of news; Send the speaking request refuse information to said terminal, carrying the said modification conversation media direction of refusal in the said speaking request refuse information is two-way request.
As one embodiment of the present of invention; Said Interworking GateWay also comprises: medium direction negotiation element 540; Be used for said speech as a result transmitting element after the speaking request refuse information is sent at said terminal, receive the media pulse grant message that said speaking right controlling entity is returned; And send to said terminal that to revise the medium direction be two-way message.
As one embodiment of the present of invention, said medium direction negotiation element 540 also is used for sending to said terminal after to revise the medium direction be two-way message, and receiving the acceptance of returning at said terminal, to revise the conversation media direction be two-way message.
As one embodiment of the present of invention, said medium direction negotiation element 540 also is used for sending to said terminal after to revise the medium direction be two-way message, and receiving the refusal that returns at said terminal, to revise the conversation media direction be two-way message; And send media pulse release to said speaking right controlling entity and ask.
One of ordinary skill in the art will appreciate that; The process of the method for realization the foregoing description can be accomplished through the relevant hardware of program command; Described program can be stored in the read/write memory medium, and this program when carrying out the corresponding step in the said method.Described storage medium can be like ROM/RAM, magnetic disc, CD etc.
More than the method and the Interworking GateWay of a kind of POC of access session that the embodiment of the invention provided is described in detail; Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; 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 (16)

1.一种接入POC会话的方法，其特征在于，包括： 1. A method for accessing a POC session, comprising: 建立终端与POC会议中心的会话通道；所述会话通道为只允许终端接收媒体的会话通道； Establish a session channel between the terminal and the POC conference center; the session channel is a session channel that only allows the terminal to receive media; 接收终端发送的发言请求； Receive the speaking request sent by the terminal; 在接收到所述终端发送的发言请求后，向发言权控制实体发送媒体脉冲请求； After receiving the speaking request sent by the terminal, sending a media burst request to the floor control entity; 接收所述发言权控制实体返回的媒体脉冲授予消息； receiving a media burst grant message returned by the floor control entity; 在接收所述媒体脉冲授予消息后，向所述终端发送所述发言请求接受的消息；向所述终端发送所述发言请求接受的消息后，接收所述终端发送的媒体流； After receiving the media pulse grant message, sending a message of accepting the speaking request to the terminal; after sending the message of accepting the speaking request to the terminal, receiving the media stream sent by the terminal; 其中，所述的建立所述终端与POC会议中心的会话通道具体为： Wherein, the establishment of the session channel between the terminal and the POC conference center is specifically: 接收所述终端发送的建立会话请求； receiving a session establishment request sent by the terminal; 将所述建立会话请求发送到POC会议中心； Send the session establishment request to the POC conference center; 在发送所述建立会话请求后，接收所述POC会议中心返回的建立会话请求响应消息； After sending the session establishment request, receiving a session establishment request response message returned by the POC conference center; 向所述终端发送所述建立会话请求响应消息，所述建立会话请求响应消息修改会话媒体方向为单向。 Sending the session establishment request response message to the terminal, where the session establishment request response message modifies the session media direction to one-way. 2.根据权利要求1所述的接入POC会话的方法，其特征在于，所述建立所述终端与所述POC会议中心的会话通道之后： 2. The method for accessing a POC session according to claim 1, wherein, after the establishment of the session channel between the terminal and the POC conference center: 所述终端发送的发言请求携带修改会话媒体方向为双向的请求； The speech request sent by the terminal carries a request for modifying the session media direction to be two-way; 所述向终端发送的发言请求接受消息接受修改会话媒体方向为双向的请求。 The speaking request acceptance message sent to the terminal accepts a request for modifying the session media direction to be bidirectional. 3.根据权利要求2所述的接入POC会话的方法，其特征在于，在向所述发言权控制实体发送所述媒体脉冲请求后，接收所述发言权控制实体返回的媒体脉冲请求拒绝消息； 3. The method for accessing a POC session according to claim 2, characterized in that, after the media burst request is sent to the floor control entity, the media burst request rejection message returned by the floor control entity is received ; 接收到所述发言权控制实体返回的媒体脉冲请求拒绝消息后，向所述终端发送发言请求拒绝消息，所述发言请求拒绝消息中携带拒绝所述修改会话媒体方向为双向的请求。 After receiving the media burst request rejection message returned by the floor control entity, send a speech request rejection message to the terminal, where the speech request rejection message carries a request to reject the request for modifying the session media direction to be bidirectional. 4.根据权利要求2所述的接入POC会话的方法，其特征在于，在向所述发 言权控制实体发送所述媒体脉冲请求后，接收所述发言权控制实体返回的媒体脉冲请求等待消息； 4. The method for accessing a POC session according to claim 2, characterized in that, after sending the media pulse request to the right-to-speak control entity, receiving the media pulse request that the right-to-speak control entity returns waits for information; 向所述终端发送发言请求拒绝消息，所述发言请求拒绝消息中拒绝所述修改会话媒体方向为双向的请求。 Sending a speech request rejection message to the terminal, where the request for modifying the session media direction to be bidirectional is rejected in the speech request rejection message. 5.根据权利要求4所述的接入POC会话的方法，其特征在于，在向所述终端发送发言请求拒绝消息之后，接收所述发言权控制实体返回的媒体脉冲授予消息； 5. The method for accessing a POC session according to claim 4, characterized in that, after sending the speaking request rejection message to the terminal, receiving the media pulse grant message returned by the speaking right control entity; 向所述终端发送修改媒体方向为双向的消息。 A message for modifying the media direction to be bidirectional is sent to the terminal. 6.根据权利要求5所述的接入POC会话的方法，其特征在于，在向所述终端发送修改媒体方向为双向的消息后，接收所述终端返回的接受修改会话媒体方向为双向的消息。 6. The method for accessing a POC session according to claim 5, characterized in that, after sending the message that the media direction is modified to be two-way to the terminal, receiving the message that the terminal returns to accept and modify the media direction of the session is a two-way message . 7.根据权利要求5所述的接入POC会话的方法，其特征在于，在向所述终端发送修改媒体方向为双向的消息后，接收所述终端返回的拒绝修改会话媒体方向为双向的消息； 7. The method for accessing a POC session according to claim 5, characterized in that, after sending the message that the media direction is modified to be two-way to the terminal, receiving the message that the terminal returns rejecting that the media direction of the session is two-way ; 接收到所述终端返回的拒绝修改会话媒体方向为双向的消息后，向所述发言权控制实体发送媒体脉冲释放请求。 After receiving the message of refusing to change the session media direction to two-way returned by the terminal, a media burst release request is sent to the floor control entity. 8.根据权利要求1、2或6所述的接入POC会话的方法，其特征在于，向所述终端发送所述发言请求接受的消息后或接收到所述终端返回的接受修改会话媒体方向为双向的消息后，在预置时间内，若未接收到所述终端发送的媒体流，则向所述发言权控制实体发送媒体脉冲释放请求，并向所述终端发送修改媒体会话方向为单向的消息。 8. The method for accessing a POC session according to claim 1, 2 or 6, characterized in that, after sending the message that the speaking request is accepted to the terminal or receiving an acceptance that the terminal returns to modify the session media direction After the two-way message, within the preset time, if the media stream sent by the terminal is not received, a media pulse release request is sent to the speaking right control entity, and a request for modifying the media session direction to single is sent to the terminal. to the news. 9.根据权利要求1、2或6所述的接入POC会话的方法，其特征在于，向所述终端发送所述发言请求接受的消息后或接收到所述终端返回的接受修改会话媒体方向为双向的消息后，接收所述发言权控制实体发送的媒体脉冲招回请求； 9. The method for accessing a POC session according to claim 1, 2 or 6, characterized in that, after sending the message that the speaking request is accepted to the terminal or receiving an acceptance that the terminal returns to modify the session media direction After receiving a two-way message, the media pulse recall request sent by the floor control entity is received; 在接收到所述媒体脉冲招回请求后，向所述终端发送修改会话媒体方向为单向的消息。 After receiving the media pulse recall request, send a message to the terminal to change the media direction of the session to one-way. 10.一种互联网关，其特征在于，包括：  10. An Internet gateway, characterized in that, comprising: 建立会话单元，用于建立终端与POC会议中心的会话通道；所述会话通道为只允许终端接收媒体的会话通道； Establish a session unit for establishing a session channel between the terminal and the POC conference center; the session channel is a session channel that only allows the terminal to receive media; 发言协商单元，用于接收终端发送的发言请求；在接收到所述终端发送的发言请求后，向发言权控制实体发送媒体脉冲请求； The speaking negotiation unit is configured to receive the speaking request sent by the terminal; after receiving the speaking request sent by the terminal, send a media burst request to the speaking right control entity; 发言协商结果发送单元，用于在所述发言协商单元接收到媒体脉冲授予消息后，向所述终端发送所述发言请求接受的消息； A speaking negotiation result sending unit, configured to send a message of acceptance of the speaking request to the terminal after the speaking negotiating unit receives a media burst grant message; 其中，所述建立会话单元包括：会话请求单元和会话请求结果发送单元； Wherein, the session establishment unit includes: a session request unit and a session request result sending unit; 所述会话请求单元，用于接收所述终端发送的建立会话请求；并将所述建立会话请求发送到POC会议中心； The session request unit is configured to receive the session establishment request sent by the terminal; and send the session establishment request to the POC conference center; 所述会话请求结果发送单元，用于在发送所述建立会话请求后，接收所述POC会议中心返回的建立会话请求响应消息；向所述终端发送所述建立会话请求响应消息，所述建立会话请求响应消息修改会话媒体方向为单向。 The session request result sending unit is configured to receive the session establishment request response message returned by the POC conference center after sending the session establishment request; send the session establishment request response message to the terminal, and the session establishment request response message is sent to the terminal. The request-response message modifies the session media direction to one-way. 11.根据权利要求10所述的互联网关，其特征在于， 11. The internet gateway according to claim 10, characterized in that, 所述发言协商单元接收的终端发送的发言请求携带修改会话媒体方向为双向的请求； The speaking request sent by the terminal received by the speaking negotiation unit carries a request for modifying the session media direction to be bidirectional; 所述发言协商结果发送单元向终端发送的发言请求接受消息中携带接受修改会话媒体方向为双向的请求。 The speaking request acceptance message sent by the speaking negotiation result sending unit to the terminal carries a request for accepting and modifying the media direction of the session to be bidirectional. 12.根据权利要求11所述的互联网关，其特征在于，所述发言结果发送单元，还用于在向所述发言权控制实体发送所述媒体脉冲请求后，接收所述发言权控制实体返回的媒体脉冲请求拒绝消息；接收到所述发言权控制实体返回的媒体脉冲请求拒绝消息后，向所述终端发送发言请求拒绝消息，所述发言请求拒绝消息中携带拒绝所述修改会话媒体方向为双向的请求。 12. The Internet gateway according to claim 11, wherein the speaking result sending unit is further configured to receive a response from the speaking right control entity after sending the media burst request to the speaking right control entity After receiving the media burst request rejection message returned by the floor control entity, send a speech request rejection message to the terminal, and the speech request rejection message carries the rejection of the modified session media direction as Two-way request. 13.根据权利要求11所述互联网关，其特征在于，所述发言协商结果发送单元，还用于在向所述发言权控制实体发送所述媒体脉冲请求后，接收所述发言权控制实体返回的媒体脉冲请求等待消息；向所述终端发送发言请求拒绝消息，所述发言请求拒绝消息中携带拒绝所述修改会话媒体方向为双向的请求。 13. The Internet gateway according to claim 11, wherein the speaking negotiation result sending unit is further configured to, after sending the media burst request to the speaking right control entity, receive a response from the speaking right control entity a media burst request waiting message; sending a speech request rejection message to the terminal, where the speech request rejection message carries a request to reject the request for modifying the media direction of the session to be bidirectional. 14.根据权利要求13所述互联网关，其特征在于，所述互联网关还包括：媒体方向协商单元，用于在所述发言结果发送单元向所述终端发送发言请求拒 绝消息之后，接收所述发言权控制实体返回的媒体脉冲授予消息；并向所述终端发送修改媒体方向为双向的消息。 14. The Internet gateway according to claim 13, characterized in that, the Internet gateway further comprises: a media direction negotiation unit, configured to receive the speech request rejection message after the speech result sending unit sends the speech request rejection message to the terminal. State the media burst grant message returned by the floor control entity; and send a message to the terminal to modify the media direction to be bidirectional. 15.根据权利要求14所述互联网关，其特征在于，所述媒体方向协商单元，还用于在向所述终端发送修改媒体方向为双向的消息后，接收所述终端返回的接受修改会话媒体方向为双向的消息。 15. The Internet gateway according to claim 14, wherein the media direction negotiating unit is further configured to, after sending a message to the terminal to modify the media direction to be two-way, receive an acceptance modification session media message returned by the terminal. The direction is two-way message. 16.根据权利要求14所述互联网关，其特征在于，所述媒体方向协商单元，还用于在向所述终端发送修改媒体方向为双向的消息后，接收所述终端返回的拒绝修改会话媒体方向为双向的消息；并向所述发言权控制实体发送媒体脉冲释放请求。  16. The Internet gateway according to claim 14, wherein the media direction negotiating unit is further configured to receive a refusal to modify the session media returned by the terminal after sending a message to the terminal to modify the media direction to be two-way. The message direction is two-way; and send a media burst release request to the floor control entity. the
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