KR20080073889A - Method and apparatus for controlling voice in communication system - Google Patents

Abstract

According to an aspect of the present invention, there is provided a push to talk (PTT) service-based communication system, comprising: a first service subscriber station for controlling a voice of subscribers of at least one or more push-to-talk services; 1 In the case of using the PTT service for the purpose of video discussion, including a server granting a voice right according to the voice right request received from the service terminal, the voice is obtained and returned by the host managing the session as well as the user's request. By granting the right to do this, it is possible to provide more various types of services.

Description

Method and apparatus for controlling voice in communication system {A Method and Apparatus for Providing Push To Talk Services In Communication System}

1 is a flowchart of a floor control according to the prior art.

2 is a block diagram of an apparatus for controlling a speaking right according to an exemplary embodiment of the present invention.

3 is a talk control message format according to a preferred embodiment of the present invention.

4 is a flowchart of a floor control according to a preferred embodiment of the present invention.

The present invention relates to a communication system using a PTT (Push To Talk) service, and more particularly, to a method and apparatus for controlling a speaking right of a subscriber station.

In general, PTT service literally means 'press and speak'.

Technically, the PTT service has been used for a long time as a two-way radio transceiver that enables transmission and reception at one frequency through frequency modulation (FM), amplitude modulation (AM), and pulse modulation (PM) with one radio frequency. In recent years, the transmission / reception method has been used in most wireless stations.

On the other hand, in terms of service, the PTT service is a kind of walkie-talkie service that can use a mobile phone as a small portable wireless terminal, commonly called a walkie-talkie. In other words, multiple people can simultaneously hear one person speaking on a cell phone at the press of a button, so you can pre-register people you want to call and press a button to enable one-on-one or group calls.

Conventional mobile phones need to make a call without knowing that the other party can receive the call. However, the PTT service, commonly referred to as instant messaging, can identify a recipient who can make a call by displaying a phone number that can be received on the terminal screen. have. In addition, compared to general mobile phone calls, the waiting time is shorter and easier to use, while the service fee is relatively low because it is serviced through a data network rather than a voice network.

Due to the advantages as described above, the major mobile phone manufacturers have recently been able to use the radio and the mobile phone with a built-in PTT function as a single terminal, the utilization of the trend is increasing significantly.

However, the PTT service has a disadvantage in that service coverage is not wide and smooth calls are still difficult in large buildings or temporary buildings.

1 is a flow chart of a speech control of a PTT service based system according to the prior art.

Referring to FIG. 1, a terminal A 100 and a terminal B 110, which are subscriber terminals currently participating in a session through a SIP (Session Initiation Protocol) protocol by subscribing to a PTT server 105 and a PTT service, are connected. And a terminal C (115), and the case where the terminal B (110) requests to obtain a speaking right as an example.

In step 120, the terminal B 110 transmits a voice request message to the server in order to obtain a voice. In step 125, the terminal B 110 receives a voice permission message from the PTT server 105 to obtain a voice.

In step 130, the PTT server 105 transmits a voice acquisition message of the terminal B 110 to the remaining subscriber station A 100 and the terminal C 115.

In step 135, the terminal A 100 having a pre-emptive knows that the terminal B 110 has a right to speak, and transmits a voice request message to the PTT server 105.

The PTT server 105 having received the talk request message of the terminal A 100 transmits a talk deprivation message to the terminal B 110 in step 140, and releases the talk right from the terminal B 110 in step 145. By receiving the message, the current floor is left empty. In step 150, the PTT server 105 notifies the terminal A 100, the terminal B 110, and the terminal C 115 that there is no current voice. (B)

In step 155, the PTT server 105 transmits a speaking permission message to the terminal A 100 to the terminal A 100. In step 160, the PTT server 105 sends the terminal B 110 and the terminal C 115 to the terminal. Deliver the announcement right acquisition message of the A (100).

At this time, the purpose of the protocol (Protocol) used in the PTT service is basically as follows.

● Session Initiation Protocol (SIP): Used for signaling related to call establishment / release / other supplementary services.

● Real-time Transport Protocol (RTP): Used to transmit voice packets.

● RTCP (RTP Control Protocol): Used for message control such as request for permission, permission, acquisition notification, deprivation, and release, talker identification and quality feedback.

As described above, the right to speak of subscribers in the PTT service according to the prior art is controlled in the PTT server that receives the request of the subscribers. Therefore, when acquiring a voice only at the request of the user, there is a problem that the equity of the remaining subscribers may be off.

Accordingly, it is an object of the present invention, which has been devised to solve the problems of the prior art operating as described above, to provide a method and apparatus that can be deprived / granted by a particular subscriber participating in a session.

Still another object of the present invention is to provide a method and an apparatus in which a session can be controlled by a specific subscriber (host of a session) when using a PTT service for the purpose of a video discussion.

An apparatus according to an embodiment of the present invention, which is designed to achieve the above object, in a push-to-talk service based communication system, comprising:

A first service subscriber terminal for controlling a voice of at least one subscriber of the push-to-talk service;

And a server granting a speaking right according to the speaking right request received from the first service terminal.

Method according to another embodiment of the present invention, in a push-to-talk service-based communication system, a method for controlling the right to speak,

Controlling, by a first service subscriber station, at least one or more voices of the subscribers of the push-to-talk service;

The push-to-talk server includes the step of granting a right to speak in response to a request for speaking right received from the first service terminal.

Method according to another embodiment of the present invention, in the push-to-talk service-based communication system, in the method for controlling the right to speak,

Transmitting, by the first subscriber terminal, a voice request message including a second subscriber station identifier to obtain a voice, to the server;

And granting a voice to the received second subscriber station.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating principle of the preferred embodiment of the present invention. Like reference numerals are used to designate like elements even though they are shown in different drawings, and detailed descriptions of related well-known functions or configurations are not required to describe the present invention. If it is determined that it can be blurred, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

The present invention proposes a method and apparatus for allowing a specific subscriber to control a voice that has been controlled only by an existing server in a communication system based on a PTT service network. Specifically, the right to control the right to speak to a specific subscriber, and the specific subscriber attaches the ID of the subscriber station to obtain the right to speak in the talk request message and transmits to the PTT server. Thereafter, the PTT server allows the right to speak to the terminal corresponding to the received ID, thereby allowing a specific subscriber to control the right to speak.

For example, when using the PTT service for a purpose such as a video discussion, if the voice is obtained only at the request of the user, there is a risk that the equity of the remaining subscribers may be off. Therefore, by granting authority to return the acquisition / speaking right by the coordinator managing the session, it is possible to provide various types of services to the participants of the session.

2 is a block diagram of an apparatus for controlling a speaking right according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the apparatus for controlling a floor 200 includes a client 210 of a PTT service, a PTT server 215, and a group management server 220, and participates in a current session with the PTT server 215. Subscriber terminal A 222, terminal B 224 and terminal C (226).

The group management server 220 stores information of PTT service subscribers registered from the client 210, and then transfers the subscriber information to the PTT server 215 at the request of the PTT server 215.

The client 210 transmits or receives a call message to a terminal requesting a service.

The PTT server 215 receives the SIP message and interworks with the group management server 220 to perform a call processing corresponding to a service. The PTT server 215 receives a voice request from a subscriber station having a lien right and a voice control, or a voice right including an identifier (hereinafter, referred to as an 'ID') of a terminal that wants to obtain a voice from a specific subscriber station. When receiving the request, the right to speak is allowed to the terminal corresponding to the ID.

3 is a diagram illustrating a voice request message format according to an exemplary embodiment of the present invention.

Referring to FIG. 3, in the talk request message, an ID field 300 of a subscriber station for obtaining a talk right is added to the existing talk request message.

4 is a flowchart of a floor control according to a preferred embodiment of the present invention.

Referring to FIG. 4, a PTT server 405, a terminal A 400 which is a subscriber station joining a PTT service and participating in a current session, and a terminal B 110 and a terminal C 115 are configured. do.

The subscriber of the terminal A (400) creates one PTT session called "Debate". In this case, the terminal A 400 is an initiator of the "Debate" PTT session, and has a pre-emptive and voice control authority (Priority) of the session. Thereafter, subscriber station B 224 and subscriber station C 246 join the "Debate" session. The terminal B 224 and the terminal C 246 communicate freely while the floor is controlled by the PTT server 215 as before.

In step 420, the terminal B 224 transmits a floor right request message to the PTT server 405, and in step 425 receives a floor right permission message 425 from the PTT server 405.

In step 435, the PTT server 405 transmits a voice acquisition message of the terminal B 435 to the terminal A 400 and the terminal C 415.

The terminal A 400 is deprived of the right to speak of the terminal B 410 and hopes to hand over the right to speak to the terminal C 226. In this case, in step 440, the terminal A 400 transmits a talk right request message including the ID of the terminal C 415 to the PTT server 215. In step 445, the PTT server 405 transmits a voice deprivation message of the terminal B 410, and in step 450, the terminal B 410 receives a voice release message from the PTT server 405. Your voice is empty.

In step 455, the PTT server 405 notifies the terminal A 400, the terminal B 410, and the terminal C 415 that there is no current speaking right.

In step 460, the PTT server 105 transmits a floor permission message of the terminal C 415 to the terminal C 415 for the floor right request received from the terminal A 400, and the terminal A in step 465. 405 and the terminal B 410 informs that the terminal C 415 has obtained the right to speak.

As described above, according to the present invention, a specific subscriber having a right to control a right transmits a terminal ID for obtaining a right to speak to the PTT server, thereby allowing a specific subscriber station to have a right to control the right to speak previously in the PTT server.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

In the present invention operating as described in detail above, the effects obtained by the representative ones of the disclosed inventions will be briefly described as follows.

The present invention, when using the PTT service for purposes such as video discussion, can provide a more various types of services by granting the right to obtain and return the voice not only by the user request, but also by the host managing the session. It can be effective.

Claims (11)

In a communication system based on push-to-talk service, In the apparatus for controlling the right to speak, A first service subscriber terminal for controlling a voice of at least one subscriber of the push-to-talk service; And a server for granting a speaking right according to the speaking right request received from the first service terminal. The method of claim 1, wherein the first subscriber terminal, And a utterance request message including a second subscriber station identifier for obtaining a utterance right, to the server. The method of claim 2, wherein the server, If there is a third subscriber terminal having a right to speak among the subscriber stations subscribed to the push-to-talk service, the third subscriber terminal is deprived of the right to speak, And transmitting a message indicating that there is no current speaking right to the subscriber stations, and giving the speaking right to the received second subscriber station. The method of claim 1, wherein the server, When the voice request message is received from the fourth terminal, the voice permission message of the fourth terminal is transmitted to the fourth terminal, And a utterance right notification message of the fourth terminal to the push-to-talk service subscribers. In a communication system based on push-to-talk service, In a method of controlling a voice, Controlling, by a first service subscriber station, at least one or more voices of the subscribers of the push-to-talk service; And a step of granting a speaking right by the push-to-talk server according to the speaking right request received from the first service terminal. The method of claim 5, wherein the controlling of the And a step of transmitting a talk request message including a second subscriber station identifier to obtain a talk right to the server. The method of claim 5, wherein the giving process, If there is a third subscriber terminal having a right to speak among the subscriber terminals subscribed to the push-to-talk service, depriving the right to speak of the third subscriber terminal; And transmitting a message indicating that there is no current speaking right to the subscriber stations, and granting a speaking right to the received second subscriber station. The method of claim 5, wherein the push to talk server, Receiving a utterance request message from a fourth terminal, transmitting a utterance permission message of the fourth terminal to the fourth terminal; And transmitting a voice acquisition notification message of the fourth terminal to the push-to-talk service subscribers. In a communication system based on push-to-talk service, In a method of controlling a voice, Transmitting, by the first subscriber terminal, a voice request message including a second subscriber station identifier to obtain a voice, to the server; And a step of granting a speaking right to the received second subscriber station. The method of claim 9, wherein the server, If there is a third subscriber terminal having a right to speak among the subscriber terminals subscribed to the push-to-talk service, depriving the right to speak of the third subscriber terminal; And transmitting a message indicating that there is no current speaking right to the subscriber stations, and granting a speaking right to the second subscriber station. The method of claim 8, wherein the server, Receiving a utterance request message from a fourth terminal, transmitting a utterance permission message of the fourth terminal to the fourth terminal; And transmitting a talk right acquisition notification message of the fourth terminal to the push-to-talk service subscribers.

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