CN100571149C - A kind of dialogue-based initiation protocol upgrades the implementation method of conference media type - Google Patents
A kind of dialogue-based initiation protocol upgrades the implementation method of conference media type Download PDFInfo
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- CN100571149C CN100571149C CNB2007101428882A CN200710142888A CN100571149C CN 100571149 C CN100571149 C CN 100571149C CN B2007101428882 A CNB2007101428882 A CN B2007101428882A CN 200710142888 A CN200710142888 A CN 200710142888A CN 100571149 C CN100571149 C CN 100571149C
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Abstract
The present invention discloses the implementation method that a kind of dialogue-based initiation protocol upgrades conference type, after creating in the meeting-place, the request message of the interpolation new meeting type that the conference applications server sends the conference control party that receives and the SDP of himself send to the MRS request and open channel; MRS upgrades the SDP of the conference control party that self keeps; Conference control party receives the SDP that upgrades the MRS that self keeps behind the SDP of the MRS that sends over by the conference applications server; The conference applications server sends a request message and the SDP of MRS opens media channel to the conference member request, conference member upgrades the SDP of the MRS that self keeps and self SDP and request message is sent to MRS by the conference applications server, MRS upgrades the SDP of the conference member of its reservation, finishes conference type and adds.The present invention need not to stop current ongoing meeting when carrying out the interpolation of conference type, saved time and Internet resources.
Description
Technical field
The present invention relates to IP network media conference class business, be specifically related to the implementation method that a kind of dialogue-based initiation protocol upgrades conference media type.
The method of the invention is based on NGN (Next Generation Network, next-generation communication network) or the realization of IMS (IP Multimedia Subsystem, IP Multimedia System) network.
Background technology
Conference Calling at present is by MRS (Media Resource Server, Media Resource Server) media information is mixed back output and realize that promptly, the MRS side keeps the media information of all conference members, and the conference member side keeps the media information of MRS, to realize conferencing function.
With the audio conferencing is example, the media information that all conference members need be known MRS in advance (for example, the mode of encoding and decoding, port numbers that transmission receives and IP address etc.) just can obtain through the audio frequency behind the MRS audio mixing, same, MRS needs also to know in advance that the media information of conference member just can obtain the audio frequency of each conference member, to realize the audio mixing of audio frequency, above-mentioned conference member obtains the exchange of media process that MRS media information and MRS obtain the conference member media information and is called media negotiation, in audio conferencing, only finish media negotiation, could guarantee that each conference member can send or receive audio frequency.The process of media negotiation and audio conferencing are similar in the video conference.
But the same Conference Calling that is based in SIP (Session Initiation Protocol, the session initiation protocol) territory of NGN or IMS network can only be carried out one type meeting usually.For example, the user is holding audio conferencing, in meeting is carried out if this meeting is expanded to video conference, present way is earlier current audio conferencing to be finished, and then holding video conference, though video conference comprises the function of audio conferencing,, for a part of user, only need audio conferencing to get final product, video conference there is no need, and is holding with current that meeting adjourned, reorganize holding of a meeting, caused certain hour and waste of network resources.
Summary of the invention
The objective of the invention is to propose the implementation method that a kind of dialogue-based initiation protocol upgrades conference media type, described method is called out the interpolation that realizes the new meeting medium type based on same meeting in the SIP territory of NGN or IMS network.
A kind of dialogue-based initiation protocol upgrades the implementation method of conference type, comprises the steps:
Step 1 after create in the meeting-place, sends the request message of interpolation new meeting medium type and the media information of himself by conference control party to the conference applications server;
Step 2, the conference applications server is sent to Media Resource Server with adding the request message of new meeting medium type and the media information of conference control party, asks to open for the media information that adds the channel of Media Resource Server;
Step 3, Media Resource Server are upgraded the media information of the conference control party that self keeps, and self media information is sent to the conference applications server;
Step 4, conference applications server send the media information of Media Resource Server to conference control party, and conference control party is upgraded the media information of the Media Resource Server that self keeps;
Step 5, the conference applications server sends the request message of interpolation conference media type to conference member, request is opened media channel for the media information that adds, and the media information of Media Resource Server is sent to conference member, conference member upgrades the media information of the media server that self keeps and self media information is sent to the conference applications server;
Step 6, the conference applications server sends the request message of interpolation conference media type and the media information of conference member to Media Resource Server, and Media Resource Server upgrades the media information of the conference member of its reservation, finishes the renewal of conference media type.
Described dialogue-based initiation protocol upgrades the implementation method of conference media type, and also carry out following operation when the request message of conference applications server transmission interpolation conference media type is to conference member in the described step 5: conference applications server notification conference member IMS conference medium information type is changed.
Further, described dialogue-based initiation protocol upgrades the implementation method of conference media type, also comprises the steps:
Judge whether also have conference member in the meeting-place, if any, then change step 5 over to, otherwise, EO.
Described dialogue-based initiation protocol upgrades the implementation method of conference media type, and described conference applications server is all preserved the media information of the conference control party, Media Resource Server or the conference member that receive.
The implementation method that described dialogue-based initiation protocol upgrades, the channel that request is opened Media Resource Server for the media information that adds in the described step 2 is meant:
183 message that the conference applications server sends the Media Resource Server that receives and the media information transparent transmission of Media Resource Server self are to conference control party;
The 200 OK message that conference applications server receiving media Resource Server sends, transparent transmission is to conference control party in the lump with the media information of Media Resource Server then, and conference control party is given Media Resource Server by conference applications server transparent transmission acknowledge message.
Described dialogue-based initiation protocol upgrades the implementation method of conference media type, in the described step 5, opens media channel and is meant:
Described conference member returns 183 message to the conference applications server, and the media information that carries self is to the conference applications server.
Described dialogue-based initiation protocol upgrades in the implementation method of conference media type, and the media information that Media Resource Server upgrades the described conference member of its reservation in the described step 6 is meant:
The media information of the Media Resource Server that the conference member renewal keeps and the media information of himself process conference applications server transparent transmission are to Media Resource Server, Media Resource Server upgrades the media information of the conference member of its reservation, send 200 OK message simultaneously to the conference applications server, media information upgrades successfully.
Adopt the method for the invention, realized calling out the interpolation of new conference media type, when carrying out the renewal of conference media type, need not to stop current ongoing meeting in same meeting, make the user select suitable conference media type as required, saved time and Internet resources.
Description of drawings
Fig. 1 is that the Media Stream of the embodiment of the invention is to schematic diagram;
Fig. 2 is a flow chart of realizing the embodiment of the invention.
Embodiment
Be example to add the IMS conference medium information type below, in conjunction with the accompanying drawings specific embodiments of the invention described.
As shown in Figure 1, to the Media Stream of specific embodiments of the invention to describing:
Step 101, after create in the meeting-place, by conference control party A to Conf AS (Conference ApplicationServer, the conference applications server) initiates re-invite message, new meeting media information type is added in request, and self media information (comprising original media information and the new media information that adds, as follows) is sent to Conf AS.
Step 102, Conf AS preserves the SDP (Session Description Protocol, Session Description Protocol) of conference control party A, and with the SDP transparent transmission of meeting controlling party A to MRS.
Step 103, MRS upgrades the SDP of the conference control party A that self keeps.
Step 104, MRS is sent to Conf AS with the media information of self.
Step 105, Conf AS keeps the SDP of the MRS receive, and with the SDP transparent transmission of MRS to conference control party A, conference control party A upgrades the SDP of the MRS that self keeps.
Step 106, Conf AS sends re-invite message and changes to meeting member B notification of meetings media information type, and the SDP of MRS is sent to conference member B.
Step 107, conference member B upgrades the SDP of the MRS that self keeps, and self media information is sent to Conf AS.
Step 108, Conf AS preserves the SDP of conference member B, and with this SDP transparent transmission to MRS, MRS upgrades the SDP of the conference member B that self keeps.
Be illustrated in figure 2 as the signaling process figure that realizes the embodiment of the invention:
After step 201, meeting-place are created, send Re-Invite message to Conf AS, and self media information is also sent to Conf AS in the lump by conference control party A.
Step 202, Conf AS sends Re-Invite message to MRS, asks to open for the new media information that adds the channel of Media Resource Server, and with all media informations of meeting controlling party A transparent transmission in the lump to MRS.
Step 203, MRS upgrades all media informations of the conference control party A that self keeps, returns 183 message to Conf AS, and self media information is back to Conf AS in the lump.
Step 204,183 message that Conf AS sends the MRS that receives and the media information transparent transmission of MRS are to conference control party A.
Step 205, MRS sends 200 OK message to Conf AS, Conf AS with 200 OK message transparent transmissions to conference control party A.
Step 206, conference control party A upgrades the MRS media information that self keeps, and sends ACK (affirmation) information to Conf AS, Conf AS with its transparent transmission to MRS, after MRS receives, conversation end between sign conference control party A and Conf AS and the MRS, the channel of Media Resource Server is opened.
Step 207, Conf AS sends Re-Invite message to meeting member B, and notification of meetings member B IMS conference medium information type changes, asks to open corresponding media channel for the new media information that adds, and the MRS media information of preserving is sent to conference member B in the lump.
Step 208 judges whether media channel is opened, if then change step 209 over to, otherwise the call failure changes step 212 over to.
Step 209, conference member B upgrades the SDP of the MRS that self keeps, and returns 183 message to Conf AS, and the media information that carries self is to Conf AS.
Step 210, Conf AS to MRS send Re-Invite message and with the media information transparent transmission of meeting member B to MRS.
Step 211, MRS upgrades the media information of the conference member B that himself keeps, sends 200Ok message to Conf AS, presentation medium information updating success; Conf AS sends 200 OK message to conference member B, receive 200OK message after, conference member B is after Conf AS sends ACK message, Conf AS sends ACK message to MRS, represents conversation end between this conference member B and Conf AS and the MRS with this.
Step 212 judges whether still have conference member in the meeting-place, if any, then change step 207 over to, otherwise, EO.
Claims (7)
1, a kind of dialogue-based initiation protocol upgrades the implementation method of conference type, it is characterized in that, comprises the steps:
Step 1 after create in the meeting-place, sends the request message of interpolation new meeting medium type and the media information of himself by conference control party to the conference applications server;
Step 2, the conference applications server is sent to Media Resource Server with adding the request message of new meeting medium type and the media information of conference control party, asks to open for the media information that adds the channel of Media Resource Server;
Step 3, Media Resource Server are upgraded the media information of the conference control party that self keeps, and self media information is sent to the conference applications server;
Step 4, conference applications server send the media information of Media Resource Server to conference control party, and conference control party is upgraded the media information of the Media Resource Server that self keeps;
Step 5, the conference applications server sends the request message of interpolation conference media type to conference member, request is opened media channel for the media information that adds, and the media information of Media Resource Server is sent to conference member, conference member upgrades the media information of the media server that self keeps and self media information is sent to the conference applications server;
Step 6, the conference applications server sends the request message of interpolation conference media type and the media information of conference member to Media Resource Server, and Media Resource Server upgrades the media information of the conference member of its reservation, finishes the renewal of conference media type.
2, dialogue-based initiation protocol as claimed in claim 1 upgrades the implementation method of conference type, it is characterized in that, also carries out following operation when the request message of conference applications server transmission interpolation conference media type is to conference member in the described step 5:
Conference applications server notification conference member IMS conference medium information type is changed.
3, dialogue-based initiation protocol as claimed in claim 2 upgrades the implementation method of conference type, it is characterized in that, also comprises the steps:
Judge whether also have conference member in the meeting-place, if any, then change step 5 over to, otherwise, EO.
4, dialogue-based initiation protocol as claimed in claim 1 upgrades the implementation method of conference type, it is characterized in that,
Described conference applications server is all preserved the media information of the conference control party, Media Resource Server or the conference member that receive.
5, as the implementation method of claim 1 or 3 or 4 described dialogue-based initiation protocols renewal conference type, it is characterized in that the channel that request is opened Media Resource Server for the media information that adds in the described step 2 is meant:
183 message that the conference applications server sends the Media Resource Server that receives and the media information transparent transmission of Media Resource Server self are to conference control party;
The 200OK message that conference applications server receiving media Resource Server sends, transparent transmission is to conference control party in the lump with the media information of Media Resource Server then, and conference control party is given Media Resource Server by conference applications server transparent transmission acknowledge message.
6, as the implementation method of claim 1 or 3 or 4 described dialogue-based initiation protocols renewal conference type, it is characterized in that, in the described step 5, open media channel and be meant:
Described conference member returns 183 message to the conference applications server, and the media information that carries self is to the conference applications server.
7, upgrade the implementation method of conference type as claim 1 or 3 or 4 described dialogue-based initiation protocols, it is characterized in that, the media information that Media Resource Server upgrades the described conference member of its reservation in the described step 6 is meant:
The media information of the Media Resource Server that the conference member renewal keeps and the media information of himself process conference applications server transparent transmission are to Media Resource Server, Media Resource Server upgrades the media information of the conference member of its reservation, send 200OK message simultaneously to the conference applications server, media information upgrades successfully.
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