KR100723673B1 - Method and System for Indicating Speaker by Using Multimedia for Use in Push-To-Talk Service - Google Patents

Abstract

The present invention relates to a speaker display method and system using multimedia in a PTT service.

The present invention includes a mobile communication terminal, a mobile communication network, a SIP server, a PTT server, a PS, and an MRC including a calling terminal for transmitting speech data through a PTT service and at least one receiving terminal receiving speech data from the calling terminal. A method of displaying a speaker using multimedia in a PTT service provided by a system, the method comprising: (a) receiving a request for a voice from the calling terminal; (b) approving the right to speak to the calling terminal; And (c) notifying the receiving terminal of the fact that the speaking terminal has acquired the speaking right by transmitting a multimedia file registered to indicate the obtaining of the speaking right of the calling terminal to the called terminal. Provides a speaker display method and system using multimedia in the PTT service.

According to the present invention, when one of the group members using the PTT service acquires the right to speak, multimedia information for displaying the speaker is transmitted to the terminal of the other group member, thereby effectively identifying the terminal that has obtained the right to speak.

PTT, Multimedia, Speaker Display, Voice, Mobile Communications, PTT Server, MRC, PS

Description

Method and System for Indicating Speaker by Using Multimedia for Use in Push-To-Talk Service}

1 is a block diagram showing a system for providing a PTT service in a mobile communication network according to an embodiment of the present invention;

2A and 2B illustrate a process of registering a multimedia file to a PS according to an embodiment of the present invention;

3 is a diagram illustrating a group setting process for a PTT service according to an embodiment of the present invention;

4 is a diagram illustrating a speaker display method using multimedia in a PTT service according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: mobile communication terminal 102: mobile communication terminal A

104: mobile communication terminal B 106: mobile communication terminal C

110: mobile communication network 120: SIP server

130: PTT server 140: PS

150: MRC 200: content server

The present invention relates to a speaker display method and system using multimedia in a PTT service. More specifically, a mobile communication terminal, a mobile communication network, a SIP server, a PTT server, a PS, and an MRC including a calling terminal transmitting speech data through a PTT service and one or more receiving terminals receiving speech data from the calling terminal. In the PTT service provided by the including system, when the calling terminal requests the speaking right, the calling terminal determines whether to approve the speaking right, approves the speaking right to the calling terminal, and transmits the registered multimedia file to the receiving terminal to indicate that the calling terminal acquires the speaking right. The present invention relates to a speaker display method and system using multimedia in a PTT service for notifying a receiving terminal of an acquisition right of a calling terminal.

With the rapid development of electronic and wireless communication technologies, various wireless communication services using a wireless telecommunication network have been provided. The most basic wireless communication service is a wireless voice call service that provides voice calls wirelessly between users of communication terminals regardless of time and place.

Among the various types of wireless voice call services, the common carrier radio frequency (TRS: Trunked Radio System, hereinafter referred to as 'TRS') supports one-to-many group communication by eliminating the existing one-to-one wireless communication. It is effectively and conveniently used in military and government agencies. In addition, the TRS has been used in various ways because it is possible to talk immediately and quickly by pressing a button provided on the TRS terminal without going through a process such as dialing. In this case, such a service provided to the TRS is called a push-to-talk (PTT) service.

Recently, a technical environment for providing a PTT service using a mobile communication network has been established, and a PTT service available to subscribers of a mobile communication service has been commercialized. Wireless voice call service using general mobile communication network requires waiting time due to call connection procedure to talk with other party.However, PTT service enables simple communication by pressing specific button of mobile communication terminal immediately. It can provide a relatively very fast communication service. In addition, by configuring a group for using the PTT service, one member of the member can speak at the same time through the mobile communication terminal to the other members using their mobile terminal.

In order to deliver a voice to a group member using a PTT service, a voice must be obtained, and a voice transmitted by the person who has acquired the voice is transmitted simultaneously to all users of the group. In this case, a function for informing the person who has obtained the right to speak is required, but the conventional PTT service simply informs the fact that 'someone' among the members of the group has obtained the right to speak using a 'beep' sound. In other words, the PTT service user has a problem that it is not possible to know who obtained the right to speak until the voice of the speaker is transmitted. In addition, a method of providing a specialized service using multimedia media such as text, sound, and image to inform who has obtained the right to speak has not been proposed yet.

In order to solve the above problems, the present invention provides a mobile communication terminal, a mobile communication network, a SIP server, a PTT including a calling terminal for transmitting speech data through a PTT service and at least one receiving terminal receiving speech data from the calling terminal. In the PTT service provided by the system including the server, the PS and the MRC, when the calling terminal requests the speaking right, the multimedia file registered to determine whether the speaking right is approved, approving the speaking right by the calling terminal, and indicating the acquisition of the calling terminal by the calling terminal. It is an object of the present invention to provide a method and a system for displaying a speaker using multimedia in a PTT service that transmits a message to a receiving terminal to notify a receiving terminal of a speaking right of a calling terminal.

According to a first object of the present invention, a mobile communication terminal, a mobile communication network comprising a calling terminal transmitting speech data through a push-to-talk service and at least one receiving terminal receiving speech data from the calling terminal. , SIP (Session Initiation Protocol) server, PTT Push-To-Talk Group Talk Server (hereinafter referred to as 'PTT server'), PS (Presence Server), voice packet providing device (MRC: Multimedia Resource Controller, hereinafter 'MRC') A method for displaying a speaker using multimedia in a PTT service provided by a system including: (a) receiving a request for a voice from the calling terminal; (b) approving the right to speak to the calling terminal; And (c) notifying the receiving terminal of the fact that the speaking terminal has acquired the speaking right by transmitting a multimedia file registered to indicate the obtaining of the speaking right of the calling terminal to the called terminal. Provides a speaker display method using multimedia in the PTT service.

According to a second object of the present invention, a mobile communication terminal, a mobile communication network, a SIP server, a PTT server, a PS including a setting terminal for requesting group setting for a PTT service and at least one calling terminal called by the setting terminal; A method for setting a group for a PTT service in a system including an MRC, the method comprising: (a) receiving a request for a subscriber call to the calling terminal from the setting terminal; (b) inquiring a registered multimedia file to indicate subscriber status information of the calling terminal requesting a subscriber call and acquiring a voice for the PTT service; (c) creating a PTT group for registering the calling terminal as a group member; (d) requesting the calling terminal to join the PTT group and adding the calling terminal as a member of the PTT group; And (e) providing the participant list of the PTT group and the multimedia file of the participant to the setting terminal and the calling terminal.

According to a third object of the present invention, a mobile communication network is connected to a plurality of mobile communication terminals to provide a PTT service, and other mobile communication terminals using the PTT service for multimedia information for displaying a mobile communication terminal that has obtained a voice. A system for providing a server comprising: a SIP server responsible for processing and converting a message transmitted from the PTT service using a SIP protocol; A PTT server that provides the PTT service and manages the speaking right of the mobile communication terminal using the PTT service; A PS for providing a multimedia file for displaying subscriber status information subscribed to the PTT service and a voice acquisition for the PTT service; And providing the multimedia file for displaying the mobile communication terminal obtained the speaking right to another mobile communication terminal using the PTT service, and copying the speech data transmitted from the mobile communication terminal obtaining the speaking right to provide the PTT service. It provides a system for providing a PTT service comprising an MRC to be delivered to another mobile communication terminal to use.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In an embodiment of the present invention, various control signals are transmitted and received using a Real-Time Transport Protocol (hereinafter referred to as RTCP) protocol, and the spoken data of the mobile communication terminal obtained the right to speak is RTP (Real-Time Transport Protocol). In this case, it is preferable to transmit the data using the RTP protocol.

1 is a block diagram showing a system for providing a PTT service in a mobile communication network according to an embodiment of the present invention.

As shown in FIG. 1, a system for providing a PTT service in a mobile communication network according to an exemplary embodiment of the present invention includes a mobile communication terminal 100, a mobile communication network 110, a Session Initiation Protocol (SIP) server 120, PTT GTS 130 (Push-To-Talk Group Talk Server, hereinafter referred to as 'PTT server'), PS (Presence Server) 140 and voice packet providing device (MRC: Multimedia Resource Controller, hereinafter referred to as 'MRC') 150) and the like.

Meanwhile, in the embodiment of the present invention, for convenience of description, the terminal that has obtained the right to speak is set to the mobile communication terminal A 102, and the other terminal that listens to the voice transmitted from the mobile communication terminal A 102 is the mobile communication terminal. It is set to B104 and mobile communication terminal C106.

The mobile communication terminal 100 according to the preferred embodiment of the present invention can make a call through the mobile communication network 110, and automatically performs a session setting procedure according to a session establishment request from the mobile communication network 110 and performs voice communication or A terminal capable of data communication. In addition, the mobile communication terminal 100 is a PTT terminal capable of receiving a PTT service using a SIP method, and includes a hot key for a PTT function and presses a hot key to make a call with another mobile communication terminal 100. Obtain a voice for The mobile communication terminal 100 transmits a talk request signal to the MRC 150 to obtain a talk right and is given a talk right.

The mobile communication terminal 100 according to the preferred embodiment of the present invention may transmit a PTT request for call setup to the PTT server 130 using a short data burst (SDB) of an access channel. The access channel is a channel used to transmit an origination signal and a registration signal. The access channel has a low data rate for the stability of the radio channel. Here, SDB refers to the transmission of the IP packet in the DBM (Data Burst Message) field of the access channel to the data network.

The mobile communication terminal 100 according to the preferred embodiment of the present invention is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, hand-held PC (Hand-Held PC), GSM (Global System for Mobile) Various wireless communication terminals, such as a phone, a wideband CDMA (WCDMA) phone, a Code Division Multiple Access (CDMA) 2000 phone, and a Mobile Broadband System (MBS) phone, may be included. Here, MBS phone refers to a mobile communication terminal to be used in the fourth generation system that is currently discussed.

The mobile communication network 110 according to a preferred embodiment of the present invention serves to transmit and receive a wireless signal including a voice signal and a data signal. In addition, the mobile communication network 110 transmits a voice request signal from the mobile communication terminal A (102) to the SIP server 120, receives data and various control signals from the SIP server 120, the other mobile communication terminal 104 , 106). To this end, the mobile communication network 110 may include a base station transmitter, a base station controller, a mobile communication switching center, a packet data serving node (PDSN), and the like.

The base station transmitter is a network endpoint device that performs wired / wireless conversion and wireless signal transmission and reception between the mobile communication terminal 100 and the base station controller and is directly connected to the mobile communication terminal 100. The base station controller controls the base station transmitter, and assigns and releases radio channels to the mobile communication terminal 100, controls transmission output of the mobile communication terminal 100 and the base station transmitter, soft handoff, and hard handoff. Determination of handoff, transcoding and vocoding, and operation and maintenance of wireless access network are performed.

The mobile telecommunication switching center is equipped with a plurality of electronic exchanges to perform basic and additional service processing, incoming and outgoing call processing of subscribers, location registration and handoff procedures, interworking with other networks. The PDSN manages sessions to perform wireless data as packet data, performs routing processing of packet data, and connects the mobile communication network 110 with the packet data network.

Mobile communication network 110 according to a preferred embodiment of the present invention is IS (Interim Standard) -95 network, GSM network, CDMA2000 1X network, CDMA2000 3X network, CDMA2000 EV-DO (Evolution-Data only) network, WCDMA network, WiBro (Wireless Broadband Internet) may include a wireless access network by a variety of mobile communication systems, such as.

SIP server 120 according to a preferred embodiment of the present invention is responsible for the processing and conversion of PTT service-related messages using the SIP protocol, the allocation of a session for multimedia communication, such as audio (Audio), video (Video), etc. , Change and release. The SIP server 120 processes and converts standard SIP messages and binary SIP messages transmitted and received from the mobile communication terminal 100, the PTT server 130, the PS 140, or the MRC 150 to each other, and uses binary SIP messages. In case of incoming or outgoing call, '200 OK' signal or 'ACK' is transmitted.

Here, SIP is a simple text-based application layer control protocol, and is used as a signaling protocol for Internet video conferencing, Internet telephony, and the like, and is a client / server protocol unlike the conventional H.323.

The PTT server 130 according to the preferred embodiment of the present invention manages the PTT group session and manages the voice in the group members so as to provide the PTT service to the mobile communication terminal 100. The PTT server 130 may receive the talk request signal of the mobile communication terminal A 102 to determine whether to give the talk right, and transmit a multimedia file for displaying the talker of the mobile communication terminal A 102 from the PS 140. Receives and transmits to the mobile communication terminal B, C (104, 106) of the group member through the MRC (150).

In addition, the PTT server 100 receives a selective call or group call request signal of the mobile communication terminal 100 and calls a corresponding call member, and receives a response signal from each member to correspond to the mobile communication terminal 100. The result of the member's participation can be notified.

The PS 140 according to a preferred embodiment of the present invention manages subscriber information and information on a group registered by a subscriber in the PTT service, and may include a subscriber information database therein. The subscriber information database of the PS 140 includes subscriber status information such as a subscriber's ID, a terminal identification number, access status, group information such as a list of groups and group members registered by the subscriber, and a mobile communication terminal of group members when the subscriber has a voice. It may include a multimedia file for displaying the subscriber as a speaker at (100). Here, the multimedia file for the speaker display may register files in various multimedia formats including still images and moving pictures.

The subscriber information database of the PS 140 has a general data structure implemented in a storage space (hard disk or memory) of a computer system using a database management program (DBMS), and retrieves (extracts), deletes, edits, It has a data storage form in which addition and the like can be freely performed.

The MRC 150 according to the preferred embodiment of the present invention duplicates the voice of the speaker transmitted from the mobile communication terminal A 102 having obtained the speaking right, and uses the mobile communication terminals B and C 104 of another group member using the PTT service. 106) is responsible for transmitting. To this end, the MRC 150 replicates the voice data of the caller who has obtained the right to speak and transmits the number of members of the PTT call group to the mobile communication terminal 100 of each group member.

In addition, when the MRC 150 acquires the right to speak in the mobile terminal A 102 of the subscriber, the MRC 150 receives a multimedia file for indicating the subscriber that has obtained the right to speak from the PS 140, and the mobile communication terminals B and C of the group member. Transmit to (104, 106).

As such, the system for providing a PTT service according to a preferred embodiment of the present invention provides a multimedia file for identifying a subscriber who has obtained a voice so that group members using the PTT service can know who the speaker is.

2A and 2B are diagrams illustrating a process of registering a multimedia file to a PS according to an embodiment of the present invention.

In order for a subscriber of the PTT service to register the multimedia file for the speaker display on the PS 140, the multimedia file stored in the mobile communication terminal 100 may be registered in the PS 140 or stored in a separate content server 200. The multimedia file may be registered in the PS 140, and the registered multimedia file may be modified or deleted.

As shown in FIG. 2A, the mobile communication terminal 100 transmits a multimedia file stored in the mobile communication terminal 100 to the PS 140 and requests registration through a 'PUBLISH Method' signal defined in SIP. have. The PS 140 receiving a registration request of the mobile communication terminal 100 registers the received multimedia file as a multimedia file for displaying a speaker, and transmits a '200 OK' signal to the mobile communication terminal 100 to register the multimedia file. You will be notified.

As illustrated in FIG. 2B, the mobile communication terminal 100 may transmit a 'MESSAGE Method' signal defined in the SIP to the PS 140 and request to register a specific multimedia file provided by the content server 200. The PS 140 receiving a registration request of the mobile communication terminal 100 transmits a 'Request' signal to the content server 200 to request a specific multimedia file, and the content server 200 makes a request through the 'Response' signal. The received specific multimedia file is transmitted to the PS 140. The PS 140 registers the multimedia file received from the content server 200 as a multimedia file for the speaker display and transmits a '200 OK' signal to the mobile communication terminal 100 to inform that the multimedia file has been registered. do.

3 is a diagram illustrating a group setting process for a PTT service according to an embodiment of the present invention.

Subscribers who want to use the PTT service to set up a PTT group prior to using the PTT service, in the embodiment of the present invention for the convenience of description in the mobile terminal A (102) mobile terminal B (104) and mobile The process of setting up a group by calling communication terminal C 106 will be described.

The mobile communication terminal A 102 selects the mobile communication terminals B and C 104 and 106 to request a subscriber call. For this purpose, a PTT is transmitted through the mobile communication network 110 and the SIP server 120 through the 'INVITE' signal. The server 130 transmits the data (S300). Receiving the 'INVITE' signal PTT server 130 is a mobile communication terminal B, C (stored in the PS 140, to determine whether the subscribers called from the mobile communication terminal A (102) PTT service subscribers; 104 and 106 query the subscriber status information (S302).

At this time, the PTT server 130 may also query the multimedia information of the mobile communication terminals B, C (104, 106) registered in the PS 140 through the process described in FIG. 2A or 2B. When the PTT server 130 transmits a 'SUBSCRIBE' signal for confirming the subscriber to the PS 140, the PS 140 transmits a '200 OK' signal for confirming the subscriber to the PTT server 130. Subsequently, when the PS 140 provides the subscriber status information and the registered multimedia information to the PTT server 130 through the 'NOTIFY' signal, the PTT server 130 sends a PS (200 OK) signal confirming that the PS ( 140).

When the inquiry of the subscriber status information requested to the PS 140 is completed, the PTT server 130 generates a PTT group for registering the mobile communication terminals A, B, and C 102, 104, and 106 as members to the MRC 150. The request is made (S304). When the PTT server 130 transmits the 'INVITE' signal requesting the creation of the PTT group to the MRC 150, the MRC 150 transmits a '200 OK' signal and the PTT server 130 receives the '200 OK' signal. 'Confirm that the PTT group is generated by transmitting a signal to the mobile communication terminal A (102). The mobile communication terminal A 102 receiving the '200 OK' signal transmits an 'Ack' signal to the PTT server 130 and transmits an 'Ack' signal to the MRC 150 from the PTT server 130. 102 establishes a communication session between the PTT server 130 and the MRC 150.

Subsequently, the PTT server 130 requests the mobile communication terminal B 104 to join the PTT group to register the mobile communication terminal B 104 as a group member (S306). To this end, the PTT server 130 transmits an 'INVITE' signal to the mobile communication terminal B 104 to request to join the PTT group, and the mobile communication terminal B 104 approves his PTT group subscription. 200 OK 'signal is transmitted to the PTT server 130. If the mobile terminal B 104 is approved to join the PTT group, the PTT server 130 transmits an 'INVITE' signal to the MRC 150 to request the mobile terminal B 104 to register with the PTT group. The MRC 150 transmits a 200 OK signal to the PTT server 130 confirming that the mobile communication terminal B 104 is registered as a member of the PTT group. The PTT server 130 receiving the '200 OK' signal transmits the 'Ack' signal to the MRC 150 and the mobile communication terminal B 104, thereby transmitting the mobile communication terminal B 104, the PTT server 130 and the MRC ( 150) to establish a communication session.

When the mobile communication terminal B 104 is registered as a member of the PTT group, the PTT server 130 transmits a participant list of the PTT group to the mobile communication terminal A 102 and the mobile communication terminal B 104 (S308). The PTT server 130 transmits the 'INFO' signal to the mobile communication terminal B 104 to receive the participant list of the PTT group and the multimedia information of the participants in which the communication session is established, and the mobile communication terminal B 104 receives the PTT group. The '200 OK' signal confirming that the participant list has been transmitted is transmitted to the PTT server 130.

In addition, the PTT server 130 transmits a participant list and multimedia information of the PTT group to the mobile communication terminal A (102) through the 'INFO' signal, the mobile communication terminal A (102) is a setter of the PTT group communication session You will be provided with a complete list of participants, including any unset participants. At this time, since the communication session of the mobile communication terminal B 104 is established in step S306, the mobile communication terminal A 102 is provided with a participant list in which the status information of the mobile communication terminal B 104 is changed to 'CONNECTED'. . Therefore, the mobile communication terminal A 102 is provided with the entire participant list to identify the participant who is not connected to the participant in which the communication session is established. The mobile communication terminal A 102 receiving the 'INFO' signal transmits a '200 OK' signal to the PTT server 130 confirming that the participant list of the PTT group has been received.

Subsequently, the PTT server 130 requests the mobile communication terminal C 106 to join the PTT group to register the mobile communication terminal C 106 as a group member (S310). In step S310, the signal transmission and reception process for registering the mobile communication terminal C 106 as a group member and establishing a communication session between the mobile communication terminal C 106, the PTT server 130, and the MRC 150 is the same as the step S306. Detailed description thereof will be omitted.

When the mobile communication terminal C 106 is registered as a member of the PTT group, the PTT server 130 transmits a participant list of the PTT group to the mobile communication terminals A, B, and C 102, 104, and 106 (S312). As in step S308, the PTT server 130 transmits the participant list and multimedia information of the PTT group to the mobile communication terminals A, B, and C (102, 104, 106) through the 'INFO' signal, and from the participants of the PTT group It receives the '200 OK' signal confirming that the list has been received and sets up a PTT group for the PTT service. Of course, even at step S312, the mobile communication terminal A 102 may receive the entire participant list and check whether all the subscribers called at step S300 have set up the communication session.

Meanwhile, in the description of FIG. 3, after adding the mobile communication terminal B 104 to the PTT group in step S306, the mobile communication terminal C 106 is added to the PTT group in step S310, but this is for convenience of description. It is of course possible to add the mobile communication terminal C 106 to the PTT group first and then add the mobile communication terminal B 104 to the PTT group. In addition, even when a plurality of PTT service subscribers are to be set as a PTT group, the PTT group may be set by registering the subscribers as group members in the same manner as described in FIG. 3.

4 is a diagram illustrating a speaker display method using multimedia in a PTT service according to an exemplary embodiment of the present invention.

In the embodiment of the present invention, for convenience of description, when the mobile communication terminal A 102 of the PTT group set in the description of FIG. 3 obtains a voice, the speaker is referred to as the mobile communication terminals B and C 104 and 106 that are members of the group. It will be described on the assumption that a process of transmitting multimedia information capable of identifying that the mobile communication terminal A 102 is transmitted.

The mobile communication terminal A 102 to obtain the right to speak presses the hotkey so that the hotkey for the PTT function is on (S400), and when the hotkey is on, the mobile communication network 110 and the SIP server 120 The MRC 150 transmits a 'speak right request' signal for obtaining a right to speak using RTCP (S402). The MRC 150 receiving the 'speak right request' signal of the mobile communication terminal A 102 transmits the 'speak right request INFO' signal to the PTT server 130 (S404), and the PTT server 130 grants the right to speak. After reviewing the 'speak right grant 200 OK' to approve the acquisition of the right to speak by the mobile communication terminal A 102 is transmitted to the MRC 150 (S406).

The MRC 150, which has received the right to speak 200 OK 'signal, receives the multimedia file registered by the mobile communication terminal A 102 that has obtained the right to speak from the PS 140, and uses the RTCP protocol to transmit a' speak right approved 'signal. The mobile communication terminal A 102, which is transmitted to the mobile communication terminal A 102 and receives the 'speak right approval' signal, acquires the right to speak (S408). At the same time as step S408, the MRC 150 transmits a 'voice acquisition notification' signal indicating that the mobile terminal A 102 has obtained the right to speak to the mobile terminals B and C 104 and 106 using the RTCP protocol. The multimedia file for displaying the mobile communication terminal A 102 as a speaker is received from the PS 140 and transmitted along with the 'voice acquisition notification' signal (S410). Therefore, the mobile communication terminals B and C 104 and 106 that have received the 'speak right acquisition notification' signal are reproduced so that they can identify that the talk right acquirer is the mobile terminal A 102.

Subsequently, the mobile communication terminal A 102 having the right to speak speaks through the PTT service of the present invention, and the spoken voice data is transmitted to the mobile communication terminals B and C 104 and 106 using RTP ( S412). At this time, the voice data of the mobile communication terminal A (102) is transmitted to the MRC (150), the MRC 150 duplicates the received voice data, respectively, the mobile communication terminal B (104) and the mobile communication terminal C (106) Will be sent to.

Of course, even when the mobile communication terminal B 104 or the mobile communication terminal C 106 obtains the right to speak, the multimedia information of the speaker who has obtained the right to speak is transferred to the mobile communication terminal 100 of another group member to obtain who has the right to speak. Can be identified.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, when one of the group members using the PTT service acquires the right to speak, the multimedia information for displaying the speaker is transmitted to the terminal of the other group member to easily identify the terminal that has obtained the right to speak. It has an effect.

In addition, by providing additional services for registering, modifying, and deleting multimedia files for the speaker display, PTT service subscribers can register and use multimedia files utilizing their own personalities to activate PTT services using mobile communication networks. It has an effect.

Claims (33)

delete delete delete delete delete delete delete delete A mobile communication terminal, a mobile communication network, a Session Initiation Protocol (SIP) server, including a calling terminal transmitting speech data through a push-to-talk service and at least one receiving terminal receiving speech data from the calling terminal; A system including a PTT GTS (Push-To-Talk Group Talk Server, hereinafter referred to as 'PTT Server'), a PS (Presence Server), and a voice packet providing device (MRC: Multimedia Resource Controller, hereinafter referred to as 'MRC') In the speaker display method using multimedia in the provided PTT service, (a) receiving a request for a voice from the calling terminal; (b) approving the right to speak to the calling terminal; And (c) notifying the receiving terminal of the fact that the speaking terminal has obtained the speaking right by transmitting a multimedia file registered to indicate the obtaining of the speaking right of the calling terminal to the called terminal; And the multimedia file transmits and registers a file stored in the mobile communication terminal to the PS or registers and transmits a file stored in a separate content server to the PS. The method of claim 9, When the file stored in the mobile communication terminal is transmitted to the PS and registered as the multimedia file, the mobile communication terminal transmits a specific file stored in the mobile communication terminal to the PS through a 'PUBLISH Method' signal. And requesting that the PS transmit a '200 OK' signal to the mobile communication terminal to notify that the specific file is registered as the multimedia file. The method of claim 9, When the file stored in the content server is transmitted to the PS and registered as the multimedia file, the mobile communication terminal transmits a 'MESSAGE Method' signal to the PS and requests to register a specific file stored in the content server. When the PS requests the specific file to the content server through a 'Request' signal, the content server provides the specific file to the PS through a 'Response' signal, and the PS provides the specific file to the multimedia file. And registering the specific file as the multimedia file by transmitting a '200 OK' signal to the mobile communication terminal. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete A PTT (Push-To-Talk) service is connected to a plurality of mobile communication terminals in a mobile communication network, and multimedia information for displaying a mobile communication terminal that has obtained a voice is provided to another mobile communication terminal using the PTT service. In the system, A Session Initiation Protocol (SIP) server in charge of message processing and conversion delivered from the PTT service using a SIP protocol; A PTT GTS (Push-To-Talk Group Talk Server), which provides the PTT service and manages the talk right of the mobile communication terminal using the PTT service; A Presence Server (PS) for providing a multimedia file for displaying subscriber status information subscribed to the PTT service and acquisition of voice for the PTT service; And The multimedia file for displaying the mobile communication terminal obtained the right to speak is provided to another mobile communication terminal using the PTT service, and the speech data transmitted from the mobile communication terminal acquiring the speaking right is used to use the PTT service. It includes a voice packet providing device (MRC: Multimedia Resource Controller, referred to as "MRC") for transmitting to another mobile communication terminal, The PS is a system for providing a PTT service, characterized in that for registering the multimedia file by receiving a file stored in the mobile communication terminal or a file stored in a separate content server. The method of claim 28, When the file stored in the mobile communication terminal is transmitted to the PS and registered as the multimedia file, the mobile communication terminal transmits a specific file stored in the mobile communication terminal to the PS through a 'PUBLISH Method' signal. And requesting that the PS transmit a '200 OK' signal to the mobile communication terminal to notify that the specific file is registered as the multimedia file. The method of claim 28, When the file stored in the content server is transmitted to the PS and registered as the multimedia file, the mobile communication terminal transmits a 'MESSAGE Method' signal to the PS and requests to register a specific file stored in the content server. When the PS requests the specific file to the content server through a 'Request' signal, the content server provides the specific file to the PS through a 'Response' signal, and the PS provides the specific file to the multimedia file. Registering the specific file as the multimedia file by transmitting a '200 OK' signal to the mobile communication terminal. delete delete delete

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