CN100359899C

CN100359899C - Method of realizing multiplex sound reproduction simultaneously in conference through MEGACO protocol

Info

Publication number: CN100359899C
Application number: CNB021450056A
Authority: CN
Inventors: 李明栋; 邹春芽; 陈磊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2002-10-31
Filing date: 2002-10-31
Publication date: 2008-01-02
Anticipated expiration: 2022-10-31
Also published as: CN1494288A

Abstract

The present invention discloses a method for realizing multichannel simultaneous sound reproduction in a conference by an MEGACO protocol, which comprises the following steps: (1) a media gateway as a conferencing server creates terminating points in the quantity equal to that of users participating in the conference on a context where a sound mixing point of the conference is positioned by using an adding command so that speech sound media flows of all users in the conference are gathered to the sound mixing point to mix the sounds; (2) a media gateway controller creates new terminating points on the context where the sound mixing point is positioned by an adding command; (3) the media gateway controller transmits a modifying command to the new terminating points on the sound mixing point to reproduce the sound. Due to the adoption of the technical scheme of the present invention, the sound is reproduced by utilizing the resources already existing in the conference process, the protocol message flow quantity between the media gateway controller and the media gateway in the conference process is reduced, and the present invention has the advantages of operation time saving and sound reproduction resource saving.

Description

Pass through megaco protocol and in meeting, realize the method for simultaneous multichannel playing

Technical field

The present invention relates to communication technical field, relate in particular to and pass through megaco protocol and in meeting, realize simultaneous multichannel playing.

Background technology

MEGACO (Media Gateway Control, i.e. media gateway controlling) agreement is the internet engineering service groups RFC3015 agreement of (The Internet Engineering Task Force is called for short IETF).

Be illustrated in figure 1 as the system group network figure that realizes megaco protocol.Megaco protocol has adopted separation gateway thought, and the gateway that former signaling and medium are focused on is decomposed into two parts: media gateway (Media Gateway is called for short MG) and Media Gateway Controller (Media Gateway Controller, abbreviation MGC).The MGC processing signaling, MG handles medium, the action of MGC control MG.From being a kind of master/slave (master/slave) relation in essence with MEGACO, send the order that will carry out by MGC to MG, MG gives MGC with the information reporting of being collected.MGC is equivalent to main (master), and MG is equivalent to from (slave).MGC distributes to the MG specific tasks, and handles the request that MG submits.MGC and MG are the network elements in the network, carry out communication by megaco protocol between they are mutual.

MGC in the megaco protocol and the logical relation between the MG represent that by link model two members the most basic are exactly context (Context) and destination node (Termination) in the link model.Wherein the annexation and the topological relation of destination node (Termination) represented in context (Context).

Main order between MGC and the MG comprises increase (ADD), revises (MODIFY) deletion (SUBTRACT), notice (NOTIFY) etc.

Playback is meant in call treatment, for certain service needed, carries out speech play for the calling party, as the voice suggestion of intelligent network.In conference system, a kind of special playback business demand is arranged, promptly play identical voice simultaneously for the speech channel in many ways that participates in a conference.Fig. 2 shows the existing method that megaco protocol is implemented in simultaneous multichannel playing in the meeting of passing through, as shown in the figure, in a meeting, suppose to have three media gateway MG1, MG2, MG3 among meeting, media gateway MG4 is a Conference server, its X point is the audio mixing point, the audio mixing point makes in the meeting all user's voice Media Streams that need playback assemble and audio mixing, media gateway MG1, MG2, MG3 corresponding context in Conference server MG4 is Ctx1, and three corresponding destination nodes are A, B, C.Traditional audio playback method to three users on media gateway MG1, MG2, the MG3 is to use modification (MODIFY) order to play same a kind of voice respectively to MG1, MG2, MG, so media gateway MG1, MG2, three users of MG3 hear same voice respectively.Adopt said method to need media gateway controller MGC that MG1, MG2, MG3 are carried out playback operation with revising order (MODIFY) order respectively.Need use 3 to revise order (MODIFY) order so respectively, and take 3 playback resources at needs, both complicated operation took more resource again.

Summary of the invention

The objective of the invention is in order to overcome the complicated operation that exists when the existing MEGACO of passing through realizes simultaneous multichannel playing in meeting, the technical problem that takies more resource.

The technical scheme that realizes technical problem to be solved by this invention and take is summarized as follows, and a kind of megaco protocol is realized simultaneous multichannel playing in meeting method of passing through is provided, and may further comprise the steps:

(1) uses on the context at the audio mixing point place of meeting as the media gateway of Conference server and increase order and create destination node with the number of users equal amount of conference participation, make that all user's voice Media Streams gather also audio mixing of audio mixing point in the meeting;

(2) Media Gateway Controller is created new destination node by increasing order on the context at described audio mixing point place;

(3) Media Gateway Controller is gone up new destination node to described audio mixing point and is sent the modification order, carries out playback operation.

Simultaneously, provide another kind to pass through megaco protocol is realized simultaneous multichannel playing in meeting method, may further comprise the steps:

(3) Media Gateway Controller sends the playback Media Stream by the media server at modification order control playback resource place and the tie point of Conference server to the upward new destination node of described audio mixing point, carries out playback operation.

Adopt technical solution of the present invention, utilized the resource that has existed in the conference process to carry out playback, reduced the protocol message flow between the MGC and MG in the conference process, saved the operating time, and saved the playback resource.

Description of drawings

Fig. 1 shows the networking diagram of megaco protocol system;

Fig. 2 shows the existing schematic diagram of realizing simultaneous multichannel playing;

Fig. 3 shows a kind of execution mode schematic diagram that the present invention realizes simultaneous multichannel playing;

Fig. 4 shows the another kind of execution mode schematic diagram that the present invention realizes simultaneous multichannel playing.

Embodiment

Below in conjunction with accompanying drawing, illustrate the mode of concrete enforcement of the present invention.

In the meeting control procedure, need carry out the while during playback operation to a certain certain customers pairing destination node (Termination), in the present invention, all these destination nodes are not carried out playback operation, but create a destination node again at audio mixing point as this meeting of the media gateway of Conference server, then this destination node is carried out playback.Other destination nodes because and this destination node in a context, so the pairing user of other destination nodes also can hear the playback signal.

Its specific implementation is at first to use the destination node of the number of users equal amount that increases order establishment and conference participation on the context at the audio mixing point place of meeting as the media gateway of Conference server, make in the meeting all user's voice Media Streams gather audio mixing point and audio mixing, MGC is by increasing the context of (ADD) order control as the audio mixing point place on the media gateway MG4 of Conference server then, produce a new destination node Z at this context, send to new destination node Z by MGC then and revise order (MODIFY), to the playback of audio mixing point.

Figure 3 shows that the schematic diagram of a kind of execution mode of simultaneous multichannel playing method of the present invention, at first on the context at the audio mixing point X place of meeting, use the destination node of the number of users equal amount that increases order establishment and conference participation as the media gateway MG4 of Conference server, make in the meeting all user's voice Media Streams gather audio mixing point and audio mixing, create a new destination node Z again by increasing (ADD) order among the context Ctx1 at the audio mixing point X point place in Conference server MG4 then, revise (MODIFY) order by new destination node Z is sent, carry out playback operation.Because MG1, MG2, pairing three the destination node A of three users of MG3, B, C is among conference context Ctx1, it is identical that the process of playback operation and common use megaco protocol carry out playback operation by audio mixing point X, be that the playback Media Stream flows to the audio mixing point by new destination node Z, X flows to A by audio mixing point, B, three destination nodes of C, then by A, B, three destination nodes of C flow to MG1 respectively, MG2, three users of MG3, so MG1, MG2, three users of MG3 hear voice flow respectively, thereby can hear the playback of new destination node Z, finish playback operation.Like this for only need make amendment order (MODIFY) operation of MG1, MG2, three user's playbacks of MG3, and only take a playback resource in the Conference server MG4 to new destination node Z.

Figure 4 shows that the schematic diagram of the another kind of execution mode of simultaneous multichannel playing method of the present invention, as shown in the figure, when playback resource and Conference server during not at same physical equipment, for example playback resource is on another one media server MG5, at first on the context at the audio mixing point X place of meeting, use the destination node of the number of users equal amount that increases order establishment and conference participation as the media gateway MG4 of Conference server, make in the meeting all user's voice Media Streams gather audio mixing point and audio mixing, create a new destination node Z again by increasing (ADD) order among the context Ctx1 at the audio mixing point X point place in Conference server MG4 then, Media Gateway Controller sends the playback Media Stream by the media server at modification order control playback resource place and the tie point M of Conference server to described new destination node Z then, carries out playback operation.Because MG1, MG2, pairing three the destination node A of three users of MG3, B, C is among conference context Ctx1, it is identical that the process of playback operation and common use megaco protocol carry out playback operation by the audio mixing point, be that the playback Media Stream flows to audio mixing point X by new destination node Z, X flows to A by audio mixing point, B, three destination nodes of C, then by A, B, three destination nodes of C flow to MG1 respectively, MG2, three users of MG3, so MG1, MG2, three users of MG3 hear voice flow respectively, thereby can hear the playback of media server MG5, finish playback operation new destination node Z.Like this for MG1, MG2, three user's playbacks of MG3 order (MODIFY) operation of only need making amendment, and only take a playback resource to the tie point M of the media server at playback resource place and Conference server.

Although disclosed relating to, passed through megaco protocol and realize that in meeting the method for simultaneous multichannel playing carried out special description with reference to embodiment, those skilled in the art can understand, under the situation that does not depart from scope and spirit of the present invention, can carry out all conspicuous modification of form and details to it, for example, because same in the megaco protocol and the similitude of agreement H.248, the essence of technical scheme of the present invention agreement realizes that in meeting simultaneous multichannel playing is suitable equally for using H.248.Therefore, embodiment described above is illustrative and not restrictive, and under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.

Claims

1, pass through megaco protocol is realized simultaneous multichannel playing in meeting method, it is characterized in that may further comprise the steps:

2, pass through megaco protocol is realized simultaneous multichannel playing in meeting method, it is characterized in that may further comprise the steps: