CN101127622B - Switching method for media devices - Google Patents
Switching method for media devices Download PDFInfo
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- CN101127622B CN101127622B CN2007101453530A CN200710145353A CN101127622B CN 101127622 B CN101127622 B CN 101127622B CN 2007101453530 A CN2007101453530 A CN 2007101453530A CN 200710145353 A CN200710145353 A CN 200710145353A CN 101127622 B CN101127622 B CN 101127622B
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Abstract
The utility model discloses a switching method for media equipment, which is characterized in the following steps: step 1: after the assembly room is created, the meeting controlling party sends the media information of the meeting controlling party to the meeting application server; step 2: the meeting application server sends the media information of the meeting controlling party to the objective media source server to be switched; step 3: the objective media source server stores the media information of the meeting controlling party and sends the media information on the media source server to the meeting application server; step 4: the meeting application server sends the media information of the media source server to the meeting controlling party; step 5: the meeting controlling party stores the media information of the media source server and updates the media information provided with the original media type to the media information of the media source server.
Description
Technical field
The present invention relates to IP network media conference class business, and particularly, relate to the switching method for media devices that a kind of dialogue-based initiation protocol is revised media information.
Background technology
At present, Conference Calling is by MRS (Media Resource Server, Media Resource Server) media information to be mixed back output to realize, 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, and all conference members need know in advance that the media information (for example, the port numbers of the mode of encoding and decoding, transmission/reception and IP address etc.) of MRS just can obtain through the audio frequency behind the MRS audio mixing; Equally, MRS needs also to know in advance that the media information of conference member just can obtain the audio frequency of each conference member, realizing 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.
In fact, under a lot of situations, the meeting of holding one type often can't satisfy the demands, and therefore often has the demand of extended medium type.For example: hold after the audio conferencing, want to expand to video conference.This moment need be by adding the medium that medium type expands video.Because the MRS that meeting is at present used generally only supports single medium type (though the MRS of video conference also supports audio frequency media, but often video media and audio frequency media provide in the lump, can't satisfy the requirement of holding independent audio conferencing), therefore just need carry out the switching of equipment.
Yet, because the audio frequency media information of the MRS that original audio conferencing uses is different with the audio frequency media information of switching MRS afterwards, therefore, if pass through the media extension that switching device is realized meeting, except needs add new conference media type, also need the media information of former audio frequency is made amendment.As for how revising media information, effective scheme is not proposed as yet at present.
Summary of the invention
Consider the problems referred to above that exist in the correlation technique and propose the present invention, for this reason, the present invention aims to provide a kind of based on NGN (Next Generation Network, next generation network) or IMS (IP Multimedia Core Network Subsystem, IP Multimedia System) switching method for media devices of network, it passes through at SIP (Session Initial Protocol, conversation initialized protocol) revises media information during the territory N/A is called out and realize that MRS switches, thereby realize the IMS conference medium expansion.
Switching method for media devices according to the present invention comprises: step 1, and after created in the meeting-place, conference control party was sent to the conference applications server with meeting controlling party media information; Step 2, the purpose Media Resource Server that the conference applications server extremely will switch meeting controlling party media information transparent transmission; Step 3, the purpose Media Resource Server is preserved the conference control party media information, and the Media Resource Server media information is sent to the conference applications server; Step 4, conference applications server with Media Resource Server media information transparent transmission to conference control party; Step 5, conference control party is preserved the Media Resource Server media information, and the media information of former medium type is updated to the Media Resource Server media information.
In above-mentioned steps one, after created in the meeting-place, conference control party can at first send re-invite message to the conference applications server, to start the processing of adding new media type.In addition, the conference control party media information can comprise the media information of the new media type of the media information of former medium type of conference control party and/or interpolation, in addition, the Media Resource Server media information can comprise the media information of the new media type of the media information of former medium type of Media Resource Server and/or interpolation.
In step 2, before transparent transmission conference control party media information, the conference applications server sends invite message to the purpose Media Resource Server, asks to open media channel for the medium type of conference control party media information, with the transmission medium bag.
In step 3, Media Resource Server is preserved the conference control party media information after media channel is opened success.
In addition, in above-mentioned steps five, carry media device identification information in the Media Resource Server media information, the processing that is updated to the Media Resource Server media information by the media information with former medium type realizes that media device switches.
Based on foregoing, switching method for media devices according to the present invention further comprises: step 6, the conference applications server sends re-invite message to one conference member, the notification of meetings type is changed, request is opened media channel with the transmission medium bag for the medium type of Media Resource Server media information, and the Media Resource Server media information is sent to conference member; Step 7, under media channel is opened case of successful, conference member is preserved the Media Resource Server media information, the media information of former medium type is updated to the Media Resource Server media information, and meeting member media information is sent to the conference applications server; To the purpose Media Resource Server, and the purpose Media Resource Server is preserved the conference member media information with meeting member media information transparent transmission for step 8, conference applications server.
Wherein, in step 7, open at media channel under the situation of failure,, then turn back to step 6 if still have the conference member of failing to give notice, otherwise, EO.In step 8, after Media Resource Server is preserved the conference member media information,, then turn back to step 6 if still have the conference member of failing to give notice, otherwise, EO.
By the present invention, dialogue-based initiation protocol is revised media information, has realized the switching of media device (MBS), thereby has reached the purpose of IMS conference medium expansion.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the switching method for media devices of the embodiment of the invention;
Fig. 2 is the detailed process flow chart according to the switching method for media devices of the embodiment of the invention;
Fig. 3 is the Signalling exchange flow chart according to the switching method for media devices of the embodiment of the invention; And
Fig. 4 is the pseudo-signaling process figure according to the switching method for media devices of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Based on NGN or IMS network, it realizes that by revise media information in same meeting is called out media device switches according to the switching method for media devices of the embodiment of the invention.
As shown in Figure 1, the switching method for media devices according to the embodiment of the invention comprises following processing:
Step S102 (step 1), after create in the meeting-place, conference control party with self media information (promptly, the conference control party media information) is sent to meeting conference applications server (ConferenceApplication Server, hereinafter to be referred as Conf AS), wherein, the conference control party media information comprises the media information of the former medium type of conference control party;
In this step S102, conference control party can send re-invite message to conference applications server (Conference Application Server is hereinafter to be referred as Conf AS), to start the processing of adding new media type; In this case, the media information that also comprises the new media type of interpolation in the conference control party media information;
Step S104 (step 2), Conf AS sends invite message to the purpose MRS that will switch (Media Resource Server), request is opened media channel for the medium type of conference control party media information, with the transmission medium bag, and Conf AS with meeting controlling party media information transparent transmission to purpose MRS;
Step S106 (step 3), after media channel is opened success, purpose MRS preserves the conference control party media information, and self media information (MRS media information) is sent to Conf AS, wherein, the MRS media information comprises the media information of the new media type of the media information of former medium type of MRS and/or interpolation;
Step S108 (step 4), ConfAS with MRS media information transparent transmission to conference control party;
Step S110 (step 5), conference control party is preserved the MRS media information, and the media information of former medium type is updated to the MRS media information.
In this step, owing to carry media device identification information in the MRS media information, therefore, be updated to the MRS media information by media information with former medium type, can realize that media device switches.
Said process is a conversation procedure between conference control party and Conf AS and the MRS, can (step 1 to step 6) is further understood with reference to the pseudo-signaling process of the Fig. 4 that will be described below.
Preferably, based on above-mentioned processing, (step 7 shown in Figure 4 is to step 11) to may further include conversation procedure between conference member and ConfAS and the MRS according to the switching method for media devices of the embodiment of the invention.
As shown in Figure 2, the conversation procedure between conference member and Conf AS and the MRS comprises:
Step S112 (step 6), ConfAS sends re-invite message to one conference member (terminal), the notification of meetings type is changed, request is opened media channel with the transmission medium bag for the medium type of MRS media information, and the media information of the MRS media information after will switching sends to this conference member;
Step S114 (step 7), under media channel was opened case of successful, conference member was preserved the MRS media information, and the media information of former medium type is updated to the MRS media information, and self media information (that is conference member media information) is sent to ConfAS; Open at media channel under the situation of failure, the response failure if still have conference member, then turns back to step S112, otherwise processing finishes;
To purpose MRS, and purpose MRS preserves the conference member media information, if still have conference member, then turn back to step S112, otherwise processing finishes with meeting member media information transparent transmission for step S116 (step 8), Conf AS.
By can better understand the present invention embodiment in conjunction with Fig. 3 and Fig. 4.
Wherein, Fig. 3 has specifically illustrated the signalling interactive process (similar with Fig. 1 and Fig. 2) of above-mentioned processing.As shown in Figure 3, processing of the present invention can be described below:
Conference control party (A) is sent to ConfAS with the Sdp of self;
ConfAS preserves the Sdp of A, and with the Sdp transparent transmission of A to MRS;
MRS preserves the Sdp of A, and self Sdp is sent to ConfAS;
ConfAS preserves the Sdp of MRS, and with the Sdp transparent transmission of MRS to A;
ConfAS is sent to conference member (B) with the Sdp of MRS;
B is sent to ConfAS with the Sdp of self;
ConfAS preserves the Sdp of B, and with the Sdp transparent transmission of B to MRS;
MRS preserves the Sdp of B.
Fig. 4 shows the pseudo-signaling process of above-mentioned processing.Particularly, the pseudo-signaling process shown in Fig. 4 can be described below:
Step 1, conference control party send Re-Invite message, carry self media information and send to ConfAS;
Step 2, Conf AS sends Invite message to MRS, and the media information of meeting controlling party is carried in the lump to MRS;
Step 3, MRS returns 183 message to ConfAS, and carries himself media information and give ConfAS;
Step 4, ConfAS sends 183 message to conference control party, and the MRS media information after will switching simultaneously is transparent transmission in the lump;
Step 5, MRS sends 200 OK message to ConfAS, ConfAS with its transparent transmission to conference control party;
Step 6, conference control party sends ACK to ConfAS, and ConfAS to MRS, after MRS receives, indicates conversation end between conference control party and ConfAS and the MRS with its transparent transmission;
Step 7, Conf AS sends Re-Invite message to a conference member, carries the MRS media information of preservation in Re-Invite message;
Step 8, this conference member returns 183 message to Conf AS, and carries self medium to ConfAS;
Step 9, ConfAS sends Re-Invite message to MRS, and with target meeting member media information transparent transmission to MRS;
Step 10 after the MRS medium upgrade successfully, sends 200Ok message to ConfAS, presentation medium information updating success, treat that this conference member sends the ACK acknowledge message after, represent conversation end between this conference member and ConfAS and the MRS;
Step 11, as still have conference member then to go to step 7 processing, otherwise EO.
By the present invention, dialogue-based initiation protocol is revised media information, has realized the switching of media device (MBS), thereby has reached the purpose of IMS conference medium expansion.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a switching method for media devices is characterized in that, comprising:
Step 1, after created in the meeting-place, conference control party was sent to the conference applications server with meeting controlling party media information;
Step 2, the purpose Media Resource Server that described conference applications server extremely will switch described conference control party media information transparent transmission;
Step 3, described purpose Media Resource Server is preserved described conference control party media information, and the Media Resource Server media information is sent to described conference applications server;
Step 4, described conference applications server with described Media Resource Server media information transparent transmission to described conference control party;
Step 5, described conference control party are preserved described Media Resource Server media information, and the media information of former medium type is updated to described Media Resource Server media information.
2. method according to claim 1 is characterized in that, described conference control party media information comprises the media information of the new media type of the media information of former medium type of described conference control party and/or interpolation.
3. method according to claim 2 is characterized in that, in described step 1, after created in the meeting-place, described conference control party at first sent re-invite message to described conference applications server, to start the processing of adding new media type.
4. method according to claim 1 is characterized in that, described Media Resource Server media information comprises the media information of the new media type of the media information of former medium type of described Media Resource Server and/or interpolation.
5. method according to claim 1, it is characterized in that, in described step 2, before the described conference control party media information of transparent transmission, described conference applications server sends invite message to described purpose Media Resource Server, request is opened media channel for the medium type of described conference control party media information, with the transmission medium bag.
6. method according to claim 5 is characterized in that, in described step 3, described Media Resource Server is preserved described conference control party media information after media channel is opened success.
7. method according to claim 1, it is characterized in that, in described step 5, carry media device identification information in the described Media Resource Server media information, the processing that is updated to described Media Resource Server media information by described media information with former medium type realizes that media device switches.
8. according to each described method in the claim 1 to 7, it is characterized in that, further comprise:
Step 6, described conference applications server sends re-invite message to one conference member, the notification of meetings type is changed, request is opened media channel with the transmission medium bag for the medium type of described Media Resource Server media information, and described Media Resource Server media information is sent to described conference member;
Step 7, under media channel is opened case of successful, described conference member is preserved described Media Resource Server media information, the media information of former medium type is updated to described Media Resource Server media information, and meeting member media information is sent to the conference applications server;
To described purpose Media Resource Server, and described purpose Media Resource Server is preserved described conference member media information with described conference member media information transparent transmission for step 8, described conference applications server.
9. method according to claim 8 is characterized in that, in described step 7, opens at media channel under the situation of failure, if still have the conference member of failing to give notice, then turns back to step 6, otherwise, EO.
10. method according to claim 8 is characterized in that, in described step 8, after described Media Resource Server is preserved described conference member media information, if still have the conference member of failing to give notice, then turns back to step 6, otherwise, EO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101453530A CN101127622B (en) | 2007-09-11 | 2007-09-11 | Switching method for media devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101453530A CN101127622B (en) | 2007-09-11 | 2007-09-11 | Switching method for media devices |
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| CN101127622A CN101127622A (en) | 2008-02-20 |
| CN101127622B true CN101127622B (en) | 2011-06-22 |
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| CN2007101453530A Expired - Fee Related CN101127622B (en) | 2007-09-11 | 2007-09-11 | Switching method for media devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101778247B (en) | 2010-02-04 | 2014-01-01 | 中兴通讯股份有限公司 | Wireless conference TV system and method for multi-conference changing-over thereof |
| CN102316301B (en) | 2010-06-29 | 2014-05-07 | 华为终端有限公司 | Method, system and device for switching conferences |
| CN107181807B (en) * | 2013-08-14 | 2020-12-15 | 华为技术有限公司 | Application hosting method and system, mobile terminal and server |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859331A (en) * | 2006-03-16 | 2006-11-08 | 华为技术有限公司 | Method and system for realizing multiple way communication |
| CN1976293A (en) * | 2006-12-19 | 2007-06-06 | 华为技术有限公司 | Conference control method and conference control system |
| CN1985489A (en) * | 2004-07-09 | 2007-06-20 | 艾利森电话股份有限公司 | Method and arrangement for providing different services in multimedia communication system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985489A (en) * | 2004-07-09 | 2007-06-20 | 艾利森电话股份有限公司 | Method and arrangement for providing different services in multimedia communication system |
| CN1859331A (en) * | 2006-03-16 | 2006-11-08 | 华为技术有限公司 | Method and system for realizing multiple way communication |
| CN1976293A (en) * | 2006-12-19 | 2007-06-06 | 华为技术有限公司 | Conference control method and conference control system |
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Effective date of registration: 20150522 Address after: Yuhuatai District of Nanjing City, Jiangsu province 210012 Bauhinia Road No. 68 Patentee after: Nanjing Zhongxing New Software Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong high tech Industrial Park, ZTE building Patentee before: ZTE Corporation |
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