WO2011153780A1

WO2011153780A1 - Method, decive and system for controlling connection of group call or of broadcast call

Info

Publication number: WO2011153780A1
Application number: PCT/CN2010/078094
Authority: WO
Inventors: 葛志明; 卓峰; 董俊贤; 张学军
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-06-11
Filing date: 2010-10-25
Publication date: 2011-12-15
Also published as: CN101860547A

Abstract

The present invention discloses a method, device and system for controlling the connection of a group call or of a broadcast call. The method for controlling the connection of the group call or of the broadcast call includes the following steps that: a control entity sets a listening authority and a speaking authority for each terminal according to the characteristics of each terminal in the group call or in the broadcast call; the control entity sends the listening authority and the speaking authority of each terminal to a Media Gateway (MGW); and the MGW performs connection processing on each terminal according to the listening authority and the speaking authority of each terminal. With the present invention, the connection of the group call or of the broadcast call in trunking communications can be simplified, and thus the processing efficiency of the control entity and the MGW is improved.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method, apparatus, and system for controlling group call or broadcast call connection. BACKGROUND OF THE INVENTION In a communication network with separate bearer and control, the H.248 protocol is mainly used in a control entity (for example, Media Gateway Controller in a softswitch network (Media Gateway Controller, referred to as

MGO) performs gateway control and bearer establishment control with a Media Gateway (Media GateWay, MGW for short). The following basic concepts are defined in the H.248 protocol:

1. Terminal: is a logical entity in the MGW, used to initiate and/or receive a media stream;

2. Context: A context specifies the connection relationship between a group of terminals, specifically described by topology descriptors;

3. Topology descriptor: The descriptor can describe the internal media flow direction between terminals in the same context, and the MGW performs the connection processing on the terminal in the context according to the description of the topology descriptor. For example: (Tl, T2, isolate): indicating that the terminals T2 and T1 are not allowed to receive the media stream from the opposite end; (Tl, T2, oneway): indicating that the terminal T2 can receive the media stream from the terminal T1, but not Reverse reception; (Tl, T2, bothway): Indicates that the terminal T2 and the T1 terminal can receive the media stream in both directions from each other. In trunked communication systems, group calls and broadcast calls are typically required. A group call refers to a multi-user half-duplex call established in a specified area. It is initiated by an ordinary member or dispatcher in the group, and members of other groups participate. After the group call is established, the network is allowed. After the speech prompts, press the PUSH TO TALK (PTT for short) button to speak, the caller releases the ΡΤΤ button after the speech is completed, other users can press the ΡΤΤ button to apply for the right to speak; for the ordinary members of the group, there is only one person at the same time. In the speech, the dispatcher can speak at any time; in addition, the members in the group can be divided into different priorities, and the high-priority users can interrupt the speech of the priority user and give priority to the speech. A broadcast call is similar to a group call, except that only the user who initiated the call has the right to occupy the upstream message. The talker, other users can only be in the receiving state during the entire call, including the dispatcher. In a communication system in which bearer and control are separated, for a group call and a broadcast call service in which multiple users participate in the same call, since the number of terminals in the corresponding context is more than 4, if the topology descriptor of the H.248 protocol is used Describe the connection relationship between the terminals, then: 1. It is required that the listening and speaking attribute of the 4 bar user is mapped to the topology relationship; 2. When the listening and speaking attribute of the terminal changes, it is necessary to describe the change of the corresponding topology relationship; The MGW needs to arrange the connection according to this topology relationship and the change of the topology relationship. Moreover, since there are a large number of terminals in the context, each additional terminal needs to describe a topology relationship between the terminal and all other terminals in the context; each ί 爹 tampering the connection relationship between a terminal and other terminals, It is also necessary to describe the topology relationship between the terminal and all other terminals in the context. In this case, for the service program on the control entity (for example, MGC), it is necessary to accurately describe the two-two topology relationship between the terminals. Since the number of terminals is large, the call control processing process of the control entity is complicated. For the MGW, it is necessary to accurately handle the two-two topology relationship between the terminals, and analyze the change of the topology relationship, and only connect the changed topology. Due to the large number of terminals, the MGW performs the topology analysis. More time, which reduces the efficiency of the subsequent processing. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method, apparatus and system for controlling group call or broadcast call connection to solve at least the problem of low efficiency of the above-described connection processing. According to an aspect of the present invention, a method for controlling group call or broadcast call connection is provided, including: controlling entities to set listening rights and speaking rights for each terminal according to characteristics of each terminal in a group call or a broadcast call; The listening authority and the speaking right of each terminal are sent to the media gateway; the media gateway performs the connection processing on each terminal according to the listening authority and the speaking right of each terminal. According to another aspect of the present invention, a control system for group call or broadcast call connection is provided, comprising: a group call or a broadcast call connection control system. The control entity is configured to set the listening rights and the speaking rights for each terminal according to the characteristics of each terminal in the group call or the broadcast call, and send the listening rights and the speaking rights of each terminal to the media gateway; the media gateway is used according to The listening rights and speaking rights of each terminal are connected to each terminal. According to still another aspect of the present invention, a control entity is provided, including: a rights setting module, configured to set listening rights and speaking rights for each terminal according to characteristics of each terminal in a group call or a broadcast call; The listening authority and the speaking right of each terminal are sent to the media gateway, so that the media gateway performs the connection processing on each terminal according to the listening authority and the speaking right of each terminal. According to still another aspect of the present invention, a media gateway is provided, including: a receiving module, configured to receive a listening right and a speaking right of each terminal in a group call or a broadcast call sent by a control entity; and a connection processing module, configured to The terminal's listening authority and speaking authority are connected to each terminal. With the present invention, the control entity sets the listening rights and the speaking rights for each terminal in the group call or the broadcast call, and sends the rights to the media gateway through the interface with the media gateway, so that the media gateway can according to the listening rights and the speaking rights of the respective terminals. The connection processing is performed to solve the problem that the call control processing process of the control entity is complicated and the efficiency of the MGW connection processing is low due to the connection processing of each terminal according to the description of the topology descriptor in the related art, thereby simplifying the clustering. The connection of group calls or broadcast calls in communication improves the processing efficiency of the control entity and the media gateway. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural diagram of a control system for group call or broadcast call connection according to a first embodiment of the present invention; FIG. 2 is a schematic structural diagram of a control entity according to Embodiment 1 of the present invention; FIG. 4 is a schematic diagram of a method for controlling group call or broadcast call connection according to Embodiment 1 of the present invention; FIG. 5 is a schematic diagram of connection of a group call terminal according to Embodiment 2 of the present invention; 6 is a schematic diagram of a group call interaction in the second embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Embodiment 1 FIG. 1 is a schematic structural diagram of a control system for group call or broadcast call connection according to Embodiment 1 of the present invention. The system mainly includes: a control entity 10 and a media gateway 20. The control entity 10 is configured to set the listening rights and the speaking rights for each terminal according to the characteristics of the respective terminals in the group call or the broadcast call, and send the listening rights and the speaking rights of the respective terminals to the media gateway 20; the media gateway 20, And configured to perform subsequent processing on the respective terminals according to the listening rights and the speaking rights of the respective terminals. For example, in a softswitch network, the controlling entity 10 may be an MGC; in a WCDMA network, the controlling entity 10 may be a Media Switching Center Server (MSC Server); in a CDMA2000 network, the controlling entity 10 may be a Media Switching Center (MSCe) . The characteristics of each terminal include, but are not limited to, the terminal is a calling terminal, the terminal is a dispatcher, or the terminal is a caller. The control entity 10 in the related art needs to describe the two-node relationship between the group call or the terminal in the broadcast call, and the media gateway 20 needs to analyze each topology relationship, and determine the terminal that changes, to perform the connection control, thereby causing The problem of complicated and inefficient processing is continued. In the foregoing system provided by the embodiment of the present invention, the media gateway 20 performs connection processing on each terminal according to the listening authority and the speaking right set by the control entity 10 for each terminal, thereby simplifying the connection processing procedure of the group call and the broadcast call in the cluster communication. , improve the efficiency of the subsequent processing. Preferably, in the above system, the control entity 10 and the media gateway 20 can be connected through an H.248 interface. Preferably, in order to increase the applicability of the solution provided by the embodiment of the present invention, the control entity 10 may further send indication information indicating the current context (ie, current call) type to the media gateway 20, if the indication information indicates that the current context is an ordinary call. The media gateway 20 performs the connection processing according to the existing topology description method. If the indication information indicates that the current context is a group call/broadcast call, the media gateway 20 directly performs the connection processing according to the listening rights and the speaking rights of the terminal. Preferably, wherein the speaking rights of the terminal include but are not limited to: having a speaking right and not having a speaking right. When the media gateway performs the connection processing, first apply for a mixer for the group call or the broadcast call, and separately assign a mixing channel to the terminal with the right to speak, and the terminal is connected through the mixing channel. The media stream is connected to the mixer. Preferably, the listening rights include but are not limited to: (1) listening to all voices with speaking rights terminals including themselves; (2) listening to all voices having speaking rights terminals other than themselves; (3) not listening The voice of any terminal. When the media gateway 20 performs the connection processing, for the terminal having the listening right (1), the media gateway 20 connects the media stream of the mixer to the terminal through the public mixing channel; for the terminal having the listening right (2) The media gateway 20 separately allocates a mixing channel for the terminal, and connects the media stream of the mixer to the terminal through the mixing channel; for the terminal with the listening right (3), the media gateway 20 does not use the media of the mixer Streaming to the terminal. It can be seen that, in the embodiment of the present invention, the media gateway 20 only needs to perform the connection processing on the terminal according to the listening authority and the speaking authority of each terminal, without considering the topology relationship between the terminals, thereby simplifying The connection process in the cluster communication. 2 is a schematic structural diagram of a control entity 10 according to Embodiment 1 of the present invention. The control entity 10 may include: a rights setting module 110 and a sending module 120. The privilege setting module 110 is configured to set the listening rights and the speaking rights for each terminal according to the characteristics of each terminal in the group call or the broadcast call. The sending module 120 is configured to send the listening rights and the speaking rights of the respective terminals to the media. The gateway is configured to enable the media gateway to perform subsequent processing on each terminal according to the listening rights and speaking rights of each terminal. Preferably, in the embodiment of the present invention, when the authority of one of the terminals changes, the rights setting module 110 modifies the listening rights and/or the rights of the terminal, and the modified listening rights and/or the rights. The device is sent to the media gateway 20, and the media gateway 20 performs the connection processing on the terminal according to the received listening authority and/or the right of the terminal, and does not need to analyze the topology relationship of each terminal, and obtains the changed terminal from the terminal. The control entity 10 in the embodiment of the present invention sets the listening rights and the speaking rights of the respective terminals according to the characteristics of the respective terminals in the group call or the broadcast call, and sends the listening rights and the speaking rights of the respective terminals to the media gateway 20 to make the media The gateway 20 can perform the connection processing on each terminal according to the listening authority and the speaking authority of each terminal, thereby simplifying the flow of the cluster communication and improving the processing efficiency of the group call/broadcast call. FIG. 3 is a schematic structural diagram of a media gateway 20 according to the first embodiment of the present invention. As shown in FIG. 3, the media gateway 20 of the embodiment of the present invention may include: a receiving module 210 and a connection processing module 220. The receiving module 210 is configured to receive the listening rights and the speaking rights of each terminal in the group call or the broadcast call sent by the control entity 10, and the connection processing module 220 is configured to connect the terminals according to the listening rights and the speaking rights of the respective terminals. deal with. Preferably, for the terminal having the speaking right, the connection processing module 220 separately allocates a mixing channel, and the media stream of the terminal is connected to the mixer through the mixing channel; for the terminal having the above listening authority (1), the connection is continued The processing module 220 connects the media stream of the mixer to the terminal through a common mixing channel; for the terminal having the above listening authority (2), the connection processing module 220 separately allocates a mixing channel for the terminal, through which the mixing channel will The media stream of the mixer is connected to the terminal; for the terminal having the above listening authority (3), the connection processing module 220 does not connect the media stream of the mixer to the terminal. 4 is a method for controlling group call or broadcast call connection according to the first embodiment of the present invention. The method mainly includes the following steps (step S402 - step S406): Step S402, the control entity 10 reports the group call or broadcast according to each terminal. The characteristics of the call, set the listening rights and the speaking rights for each terminal; for example, for the group call, the speaking rights of the calling terminal are: having the right to speak, and the listening rights of the terminal corresponding to the dispatcher are: listening to yourself All voices with a speaking right terminal. Step S404, the control entity 10 sends the listening rights and the speaking rights of the respective terminals to the media gateway.

20; For example, the control entity 10 transmits the listening rights and speaking rights of the respective terminals to the media gateway 20 through the H.248 protocol interface. For example, the control entity 10 may also send the indication information indicating the call type to the media gateway 20 through the H.248 protocol interface. When the call type indicated by the indication information is a group call or a broadcast call, the media gateway 20 according to the listening rights of each terminal. The media gateway 20 performs continuous processing on each terminal according to the topology description when the call type indicated by the indication information is an ordinary call. Step S406: The media gateway 20 performs connection processing on each terminal according to the listening authority and the speaking right of each terminal. The terminology of the terminal includes: having the right to speak and not having the right to speak. For the terminal having the right to speak, the media gateway 20 separately allocates a mixing channel for the terminal, and the media stream of the terminal is connected through the mixing channel. Mixer. The listening rights of the terminal include but are not limited to: listening to all voices with speaking rights terminals including themselves; listening to all voices with speaking right terminals except themselves; not listening to any end The voice of the end. For a terminal having a voice listening to all the terminals having the right to speak, including the self, the media gateway 20 connects the media stream of the mixer to the terminal through the public mixing channel; for all the terminals having the right to speak except for listening to itself The terminal of the voice, the media gateway 20 separately allocates a mixing channel for the terminal, and connects the media stream of the mixer to the terminal through the mixing channel; for the terminal that does not listen to the voice of any terminal, the media gateway 20 does not The terminal allocates a mixing channel and does not connect the media stream of the mixer to the terminal. The control entity 10 in the related art needs to describe the two-node relationship between the group call or the terminal in the broadcast call, and the media gateway 20 needs to analyze each topology relationship, and determine the terminal that changes, to perform the connection control, thereby causing The problem of complicated and inefficient processing is continued. In the foregoing method provided by the embodiment of the present invention, the media gateway 20 performs the connection processing on each terminal according to the listening authority and the speaking authority set by the control entity 10 for each terminal, thereby simplifying the connection processing procedure of the group call and the broadcast call in the cluster communication. , improve the efficiency of the subsequent processing. Embodiment 2 In this embodiment, the technical solution provided by the embodiment of the present invention is described by taking the terminal connection of the group call shown in FIG. 5 as an example. In FIG. 5, the T4 and Τ5 terminals are dispatching station terminals, which are connected to the dispatching station user, and the user can initiate speech at any time, and can also hear the speech of all others; T1 is a common terminal with speaking rights, and the terminal has A user has the right to speak. The voice spoken by the user can be heard by all other users of the group call. Under the terminal, other users only have the right to listen, and can listen to the speech of other users who have the right to speak. The users under the T2 and Τ3 terminals only have the right to listen, and can listen to the speech of the user who has the right to speak. For Figure 5, if the 248.248 interface between the MGC and the MGW, according to the topology description method, the topology relationships that need to be described are:

Tl, T2, oneway

T1, T3, oneway

Tl, T4, bothway

Tl, T5, bothway

T2, T3, isolate T4, T2, oneway

T5, T2, oneway

T4, T3, oneway T5, T3, oneway T4, T5, bothway can be seen that the relationship is complex. In this embodiment, the description is made by means of listening rights (which may also be called listening attributes) and speaking rights (which may also be called saying attributes). FIG. 6 is a schematic diagram of a process of performing a group call according to the embodiment. As shown in FIG. 6, the method includes the following steps: Step S601: The MGC receives a voice group call service (VGCS) call request. Step S602, the MGC sends an adding force to the MGW. Request from the T1 terminal;

The MGC summarizes the characteristics of each terminal in the group call/broadcast call and extends the H.248 interface between the MGC and the MGW to describe the summarized terminal characteristics. Expand the following parameters:

(1) Add a parameter to describe the current context type, which is used to indicate whether the current context is a group call/broadcast call type or a normal call type. If it is an ordinary call type, it describes the relationship between the terminals according to the topology method, and performs connection processing. If it is a group call/broadcast call type, it performs direct connection processing according to the characteristics of the terminal.

(2) Adding a listening permission description to the terminal in the context of the group call/broadcast call type, wherein the listening permission description includes: A. Listening to all the users having the speaking right, including listening to themselves; B. Listening to all users having the right to speak Speaking, does not include listening to yourself; C, not listening.

(3) Add a description of the rights for the terminal in the context of the group call/broadcast call type, where the description of the rights includes: A, say; B, do not say. In the step S602, since the current context is a group call type, the parameters carried in the request sent by the step S202 are: VGCS- indicates that the current context is a group call type, and T1 indicates that the terminal T1 is added, and the T1 terminal is said. The permissions are: Say, the listening rights of the T1 terminal are: Listen to all right to speak The user's speech, including listening to himself. Step S603, the MGW receives the request sent in step S602, applies for a mixer for the group call service, and, because the T1 terminal has the right to speak, separately allocates a mixing channel to the T1 terminal, and connects the media stream of the T1 terminal. Direction to the mixer. The media stream sent by the terminal to the mixer will participate in the mixing; and, since the T1 terminal has the right to "listen to all users with the right to speak, including listening to themselves", the media gateway 20 will media from the public mixing channel. Streaming to the terminal. The media stream received by the terminal from the mixer includes all the mixes with the speaking right user; the MGW returns an Add Rely to the MGC; Step S604, the MGC sends a request to the MGW to add the T2 terminal, In the request, the T2 terminal is described as: having the right to say, and having the right to listen to all the speaking users including themselves; step S605, the MGW connects the media stream to the T2 from the public mixing channel. a terminal, the media stream received by the terminal from the mixer, including all the mixes with the right to speak; the MGW returns a response to the MGC; in step S606, the MGC sends a request to the MGW to add the terminal T3, where In the request, the T3 terminal is described as: having the right to speak, and having the right to listen to all the speaking users including themselves; step S607, the MGW connects the media stream from the public mixing channel to the T3 terminal. The media stream received by the terminal from the mixer contains all the mixes of the users with the right to speak. The MGW returns a response to the MGC. In step S608, the MGC sends a request to the MGW to add a terminal T4. In the request, the T4 terminal is described as: having the speaking right, and having all the speaking except the oneself. The rights of the right user to speak; Step S609, the MGW separately allocates a mixing channel for the T4 terminal, and connects the media stream of the T4 terminal to the mixer direction. The media stream sent by the terminal to the mixer will participate in the mixing; and, the media stream is connected to the terminal from the separately allocated mixing channel, and the media stream received by the terminal from the mixer contains all the words. The right user's mix does not contain his own tone. The MGW returns a response to the MGC; in step S610, the MGC sends a request to the MGW to add a terminal T5, and in the request, T5 The terminal is described as: having the right to speak, and having the right to listen to all the speaking users having the right to speak; in step S611, the MGW separately allocates a mixing channel for the T5 terminal, and connects the media stream of the T5 terminal to the mixed The direction of the sounder. The media stream sent by the terminal to the mixer will participate in the mixing; and, the media stream is connected to the terminal from the separately allocated mixing channel, and the media stream received by the terminal from the mixer contains all the words. The right user's mix does not contain his own tone. The MGW returns a power-in response to the MGC; in step S612, the MGC sends a request to the MGW to tamper with the T1 terminal, and in the request, the T1 terminal is described as: having the right to say, and having to listen to within itself. All have the right to speak to the speaking right user; Step S613, the MGW connects the media stream from the public mixing channel to the T1 terminal, and the media stream received by the terminal from the mixer includes all the mixes with the speaking right users. The MGW returns a tamper response to the MGC. From the above description, in the embodiment of the present invention, the media gateway 20 performs the connection processing on each terminal according to the listening authority and the speaking right set by the control entity 10 for each terminal, thereby simplifying the group call and the broadcast call in the cluster communication. The processing flow is continued to improve the efficiency of the subsequent processing. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

A method for controlling group call or broadcast call connection, characterized in that it comprises:

The control entity sets the listening rights and the speaking rights for the respective terminals according to the characteristics of each terminal in the group call or the broadcast call;

The control entity sends the listening rights and the speaking rights of the respective terminals to the media gateway; the media gateway performs the connection processing on the respective terminals according to the listening rights and the speaking rights of the respective terminals. The method according to claim 1, wherein the parameter sent by the control entity to the media gateway further includes: indication information indicating a call type; the call type indicated by the media gateway in the indication information is a group When calling or broadcasting a call, the respective terminals are connected according to the listening rights and the speaking rights of the respective terminals. The method according to claim 1 or 2, wherein the said privilege comprises: having ^又; ί ¹ ] not again; ί ¹ ]. The method according to claim 3, wherein the media gateway performs the connection processing on the respective terminals:

The media gateway applies for a mixer for the group call or broadcast call;

The media gateway separately assigns a mixing channel to the terminal having the speaking right, and the media stream of the terminal is connected to the mixer through the mixing channel. The method according to claim 4, wherein the listening authority comprises: listening to all voices having a speaking right terminal including themselves, listening to all voices having a speaking right terminal other than themselves, or not listening to any terminal Voice

The media gateway performs connection processing on the respective terminals, including:

For a terminal having a voice listening to all of the speaking rights terminals including itself, the media gateway connects the media stream of the mixer to the terminal through a common mixing channel; The terminal of the voice of the right terminal, the media gateway separately assigns a mixing channel to the terminal, and the media stream of the mixer is connected to the terminal through the mixing channel.

The method according to claim 1 or 2, wherein the method further comprises: changing the listening rights and/or the speaking rights of the respective terminals;

The controlling entity tampers with the listening rights and/or the speaking rights of the respective terminals; the controlling entity sends the modified listening rights and/or speaking rights to the media gateway;

The media gateway performs the connection processing on the respective terminals according to the falsified listening authority and/or speaking authority.

7. A control system for group call or broadcast call connection, characterized in that it comprises a control entity and a media gateway, wherein:

The control entity is configured to set listening rights and speaking rights for each terminal according to characteristics of each terminal in a group call or a broadcast call, and send the listening rights and speaking rights of the respective terminals to the media gateway;

The media gateway is configured to perform the connection processing on the respective terminals according to the listening rights and the speaking rights of the respective terminals.

The system according to claim 7, wherein the control entity is further configured to send, to the media gateway, indication information indicating a call type; the call type indicated by the media gateway in the indication information is a group. When calling or broadcasting a call, the respective terminals are connected according to the listening rights and the speaking rights of the respective terminals.

A control entity, comprising: a rights setting module, configured to set a listening right and a speaking right for each terminal according to characteristics of each terminal in a group call or a broadcast call;

a sending module, configured to send the listening rights and the speaking rights of the respective terminals to the media gateway, so that the media gateway performs the connection processing on the respective terminals according to the listening rights and the speaking rights of the respective terminals. .

10. A media gateway, characterized by comprising:

a receiving module, configured to receive a listening right and a speaking right of each terminal in a group call or a broadcast call sent by the control entity;

The connection processing module is configured to perform the connection processing on the respective terminals according to the listening rights and the speaking rights of the respective terminals.