CN100525193C

CN100525193C - Method for implementing conference telephone in next generation network

Info

Publication number: CN100525193C
Application number: CNB2003101200153A
Authority: CN
Inventors: 林铭
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-11-28
Filing date: 2003-11-28
Publication date: 2009-08-05
Anticipated expiration: 2023-11-28
Also published as: CN1622572A

Abstract

The next generation network meeting telephone system realizing method has the amending connection command and information request command in MGCP protocol expanded. The expansion includes: while the chairman side calls a meeting, the chairman side MG sends information command to MGC; MGC sends amending connection command to MS to amend all the connection attribute in MS into only sending; MGC sends information request command to MS and sends meeting calling sound to all the connected sides on MS; the meeting participators listen to the meeting calling sound and the chairman side calls the joining of other sides; after the chairman side returns, MGC sends information request command to MS and stops the meeting calling sound; and MGC sends the connection amending command to MS and amends all the connection attributes on MS into 'meeting'. The present invention simplifies the meeting process and raises the meeting quality.

Description

The implementation method of conference telephone in the next generation network

Technical field

The present invention relates to communication technical field, relate in particular to the implementation method of conference telephone among a kind of NGN (next generation network).

Background technology

NGN (next generation network) is development constantly, carries out carrying out convention business in the NGN network.When realizing meeting, provide conferencing resource by media server (MS) usually, other each side are linked into media server (MS) by gateway separately, realize conference telephone.Media server can provide various media resources, comprises the playback resource, conferencing resource etc.

The telecommunication service of tripartite above common conversation is called conference telephone, and the user that presides over the meeting needs the application to telecommunication bureau, and other conference participation sides need not apply for.After the side of presiding over the meeting obtains authority, when needing meeting, as long as each participant side is added.Applied for conference telephone service as user A, user A hooking in communication process, then current all called parties listen meeting to convene sound (voice suggestion, for example: " videoconference is convened; please wait a moment "), at this moment user A can dial another number, and user A is at during dialing or dial when being unsuccessful busy tone or voice, but hooking is got back to conference telephone.When listening ring-back tone, also can clap back conference telephone.If listen busy tone, then get back to conference telephone after a period of time automatically.And the like participant each side can be added.

In the conference telephone, the side of serving as chair withdraws from meeting, when going to convene the entrant, all the each side in meeting need listen meeting to convene sound.If the convention goer is a lot, puts the conference convening sound to all sides and how to realize traffic affecting efficient and quality.

Behind chairman side's hooking, Media Gateway Controller (MGC) is applied for a plurality of playback resources to MS in the prior art, revises the real-time transport protocol (rtp) far-end attribute of each acceding party (being each media gateway) simultaneously, connects to the playback resource.After chairman convened, need deletion playback resource, revise each acceding party's RTP far-end attribute simultaneously once more so that connect to conferencing resource.

Be illustrated in figure 1 as existing conference telephone realization flow schematic diagram, with the Media Gateway Control Protocol is that example describes, if three-party conference well afoot, MG1 is chairman side, MG2, MG3 are the acceding party, when the side of serving as chair MG1 need convene the four directions to add meeting, flow process was as follows:

1, chairman side's hooking at first, MG1 sends NTFY order (be notification command, be used for the generation of gateway to the Media Gateway Controller reporting event, sent to Media Gateway Controller by gateway) to MGC (Media Gateway Controller); MGC returns success response message 200 to MG1.

2, MGC sends CRCX order (promptly create bind command, be used for creating a connection between two end points, sent to gateway by Media Gateway Controller) to MS, to playback resource of MS application; MS returns success response message 200 to MGC.

3, MGC sends MDCX order (promptly revise bind command, be used to change connection features, comprise changing local feature and the far-end feature that connects, sent to gateway by Media Gateway Controller) to MG2, revises the RTP far-end attribute of MG2, connects to the playback resource; MG2 returns success response message 200 to MGC.

4, MGC sends the CRCX order to MS, applies for a playback resource again to MS; MS returns success response message 200 to MGC.

5, MGC sends the MDCX order to MG3, revises the RTP far-end attribute of MG3, connects to the playback resource; MG3 returns success response message 200 to MGC.

6, at this moment MG2, MG3 listen meeting to convene sound, and chairman side convenes the four directions to add meeting (flow process slightly).

7, after the four directions added, MGC sent DLCX order (promptly delete bind command, this order can be sent by Media Gateway Controller, also can be sent by gateway) to MS, deletion playback resource; MS returns success response message 200 to MGC.

8, MGC sends the MDCX order to MG2, revises the RTP far-end attribute of MG2 once more, so that MG2 connects to conferencing resource; MG2 returns success response message 200 to MGC.

9, MGC sends the DLCX order to MS, deletion playback resource; MS returns success response message 200 to MGC.

10, MGC sends the MDCX order to MG3, revises the RTP far-end attribute of MG3 once more, so that MG3 connects to conferencing resource; MG3 returns success response message 200 to MGC.

11, carry out cubic videoconference.

In the above-mentioned flow process, the playback resource needs application repeatedly, discharges repeatedly, needs to revise repeatedly each acceding party's RTP far-end attribute simultaneously.When if the acceding party is a lot, to cause a large amount of CRCX, DLCX, MDCX operation, and the playback resource of application is also a lot, these frequent, a large amount of CRCX, DLCX, MDCX operation make meeting control complicated, reduced conference operation speed, influenced the efficient and the quality of Business Processing, applied for that a large amount of playback resources has caused the waste of resource.

Summary of the invention

Technical problem to be solved by this invention is: overcome that conference telephone flow process complexity in the existing NGN network, the speed that continues are slow, the deficiency of the wasting of resources, a kind of implementation method of conference telephone is provided, thereby the simplification conference flow, and save the playback resource, improve the meeting quality.

The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:

The implementation method of conference telephone in this next generation network may further comprise the steps:

A, expand revising bind command and notice request order in the MGCP, utilize the connection identifier on the Endpoint ID to represent all connection identifier on this Endpoint ID are worked for asterisk wildcard, described MGCP is MGCP;

B, when conference telephone chairman side carries out conference convening, chairman side media gateway MG sends the notice indication to media gateway controller MGC;

C, notify successfully after, MGC sends the modification bind command to media server MS, with the attribute modification of all connections on the MS for only sending sendonly;

D, revise successfully after, MGC is to the MS request command of giving notice, all connection sides on MS are put the conference convening sound;

E, meeting acceding party listen meeting to convene sound, and chairman side convenes other side's affiliation;

After F, chairman side returned, MGC was to the MS request command of giving notice, and all connection sides on MS park the conference convening sound;

After G, conference convening sound were parked, MGC sent the modification bind command to MS, was meeting conference with the attribute modification of all connections on the MS, carried out conference telephone again.

Described MGCP is the MGCP agreement.

In the described steps A, the connection identifier parameters C onnectionId among the modification bind command MDCX in the MGCP agreement is used asterisk wildcard.

In the described steps A, the connection identifier parameters C onnectionId of the request signal parameter S ignalRequests of the notice request order RQNT that is used for playback in the MGCP agreement is used asterisk wildcard.

Beneficial effect of the present invention is: the present invention utilizes existing conferencing resource to carry out playback, the MGCP agreement is carried out small amount of spread to satisfy this demand, no matter in the meeting how many square participants are arranged, playback and stop sound operation and all only need 2 orders, and do not need to revise each acceding party's RTP far-end attribute.Greatly simplify the meeting control flow, improved conference operation speed.Utilize the present invention can save a large amount of playback resources, and reduced frequent MDCX operation, simplified conference flow, improved the meeting quality.

Description of drawings

Fig. 1 is existing conference telephone realization flow schematic diagram;

Fig. 2 is a conference telephone realization flow schematic diagram of the present invention.

Embodiment

With embodiment the present invention is described in further detail with reference to the accompanying drawings below:

Bind command is promptly revised in the MDCX order in the Media Gateway Control Protocol, is used to change connection features, comprises changing local feature and the far-end feature that connects, and is sent to gateway by Media Gateway Controller; The RQNT order of MGCP agreement is the notice request order, is used for event on the regulation media gateway supervision/report end points, is sent to media gateway by Media Gateway Controller.The present invention expands MDCX and RQNT order:

Former MDCX command format and parameter are as follows:

ReturnCode，

[LocalConnectionDescriptor，]

[PackageList]

<--ModifyConnection(CallId，

EndpointId，

ConnectionId，

[NotifiedEntity，]

[LocalConnectionOptions，]

[Mode，]

[RemoteConnectionDescriptor，]

[Encapsulated?NotificationRequest，]

[Encapsulated?EndpointConfiguration])

Wherein:

The CallId parameter is used to identify the calling (or dialogue) under connecting, and the parameter value overall situation is unique.

EndpointId must stipulate fully for carrying out the Endpoint ID of MDCX order.

ConnectionId is a connection identifier, and is unique in the end points scope.

The LocalConnectionOptions parameter, only gateway just returns this parameter under the situation of this locality connection parameter change.

ReturnCode is returned by gateway, shows the execution result of MDCX order.

In above-mentioned MDCX command format and the parameter, ConnectionId (connection identifier) must fill in specific hyphen, the present invention expands it, utilizes connectionId to represent all connectionId on this EndpointId (Endpoint ID) are worked for asterisk wildcard *.

Former RQNT command format and parameter are as follows:

ReturnCode，

[PackageList]

<--NotificationRequest(EndpointId，

[NotifiedEntity，]

[RequestedEvents，]

RequestIdentifier，

[DigitMap，]

[SignalRequests，]

[QuarantineHandling，]

[DetectEvents，]

[encapsulated?EndpointConfiguration])

Wherein:

EndpointId is an end points name of carrying out the RQNT order in the gateway.

NotifiedEntity is an optional parameters, the recipient of regulation NTFY (notice) order.

The RequestIdentifier parameter connects RQNT request and the notice that is triggered.

The RequestedEvents parameter is listed the incident of gateway requirement detection/report.

DigitMap is an optional parameters, and for gateway provides the number mapping, gateway is collected number according to this number mapping.

The SignalRequests parameter is listed the set of signals that Media Gateway Controller requirement gateway is used on end points.

QuarantineHandling is an optional parameters, and how regulation handles " quarantine " incident, and " quarantine " incident is that gateway detects before the RQNT order arrives, but the incident of not reporting to Media Gateway Controller.

DetectEvents is an optional parameters, is listed in the incident that the gateway requirement detects during the quarantine.

ReturnCode is returned by gateway, shows the execution result of RQNT order.

In above-mentioned RQNT command format and the parameter, if be used for playback, SignalRequests must fill in specific hyphen, the present invention expands it, utilizing connectionId (connection identifier) is asterisk wildcard *, represents all connectionId on this EndpointId (Endpoint ID) are worked.

Be illustrated in figure 2 as conference telephone realization flow schematic diagram of the present invention, the broadcast of convening sound when the present invention utilizes conferencing resource that the each side's playback in the meeting is realized that chairman side convenes its other party.If three-party conference well afoot, MG1 are chairman side, MG2, MG3 are the acceding party, and when the side of serving as chair MG1 need convene the four directions to add meeting, flow process was as follows:

1, chairman side's hooking at first, MG1 sends the NTFY order to MGC (Media Gateway Controller); MGC returns success response message 200 to MG1.

2, MGC sends MDCX order to MS, because the MDCX order all works to all connection identifier on this Endpoint ID through expansion, thereby to utilize this MDCX be sendonly (only sending) with the attribute modification of all connections on the MS; MS returns success response message 200 to MGC.

3, MGC sends the RQNT order to MS, because the RQNT order is all worked to all connection identifier on this Endpoint ID, thereby utilized this RQNT all connection sides on MS to put the conference convening sound through expansion; MS returns success response message 200 to MGC.

4, at this moment MG2, MG3 listen meeting to convene sound, and chairman side convenes the four directions to add meeting (flow process slightly).

5, after the four directions added, MGC sent the RQNT order to MS, utilizes this RQNT all connection sides on MS to park the conference convening sound; MS returns success response message 200 to MGC.

6, MGC sends the MDCX order to MS, utilizes this MDCX that the attribute modification of all connections on the MS is conference (meeting); MS returns success response message 200 to MGC.

7, carry out cubic videoconference.

In the above-mentioned flow process; first MDCX that MGC sends to MS is that the attribute modification with all connections is sendonly (only sending); first RQNT is put the conference convening sound to all sides; second RQNT stops the conference convening sound, and second MDCX is that the attribute modification with all connections is conference (meeting).

The present invention utilizes existing conferencing resource to carry out playback, the MGCP agreement is carried out small amount of spread to satisfy this demand, no matter in the meeting how many square participants are arranged, playback and stop the sound operation and all only need 2 orders, and do not need to revise each acceding party's RTP far-end attribute.Greatly simplify the meeting control flow, improved conference operation speed.Utilize the present invention can save a large amount of playback resources, and reduced frequent MDCX operation, simplified conference flow, improved the meeting quality.

Claims

1, the implementation method of conference telephone in a kind of next generation network is characterized in that, may further comprise the steps:

2, the implementation method of conference telephone in the next generation network according to claim 1 is characterized in that: in the described steps A, the connection identifier parameters C onnectionId among the modification bind command MDCX in the MGCP agreement is used asterisk wildcard.

3, the implementation method of conference telephone in the next generation network according to claim 1, it is characterized in that: in the described steps A, the connection identifier parameters C onnectionId of the request signal parameter S ignal Requests of the notice request order RQNT that is used for playback in the MGCP agreement is used asterisk wildcard.