KR20060014760A - Method for mediating call of push to talk - Google Patents

Abstract

The present invention relates to wireless communication, and more particularly, to a PTT call arbitration method that allows the PTT call to be arbitrated by giving priority to a call participant who initiated an initial PTT call when using a push-to-talk (PTT) service. will be. To this end, the present invention provides a PTT call arbitration method of a PTT portable terminal which initiates an initial PTT call by performing an INVITE when performing a PTT call through a push-to-talk (PTT) server, through a PTT server. Determining whether a right to speak is requested during a call with an in-group or an individual, and if the right to speak is requested, transmitting a right to speak request signal to the PTT server; Entering a talk right mode in which a talk right is first given by a talk right request signal to arbitrate a talk to mediate a talk; The voice input in the speech mode arbitration mode is characterized in that the process of transmitting to the PTT server.

PTT portable terminal, PTT (push-to-talk), PTT group call, voice

Description

METHOD FOR MEDIATING CALL OF PUSH TO TALK}             

1 is a flow chart showing a general initial PTT call processing process.

2 is a flowchart illustrating a signal processing process in PTT call arbitration according to an embodiment of the present invention.

3 is a diagram illustrating a configuration of a PTT portable terminal according to an embodiment of the present invention.

4 is a flowchart showing a PTT call arbitration method of a PTT portable terminal according to an embodiment of the present invention.

5 is a flowchart illustrating a PTT call arbitration method of a PTT server according to an embodiment of the present invention.

*** Explanation of symbols for main parts of drawing ***

10: control unit 21: RF unit

23: modem 25: audio processor

27: keypad 29: memory

80: display unit ANT: antenna

MIC: Microphone SPK: Speaker

The present invention relates to wireless communication, and more particularly, to a PTT call arbitration method that allows the PTT call to be arbitrated by giving priority to a call participant who initiated an initial PTT call when using a push-to-talk (PTT) service. will be.

In general, a wireless communication system of a mobile terminal divides an entire service area into a plurality of base station (BS) areas and configures cells, which are small service areas, and base stations are mobile switching centers (MSCs). Centralized control allows subscribers to make calls while moving from cell to cell.

In the portable terminal, as the communication technology develops, various technologies for combining an IP (Internet Protocol) network and a wireless communication network using an Internet-based protocol have been developed. One such technology is called VoIP (Voice over IP), a packet-based voice service using IP.

The packet-based call service according to the prior art, which operates as described above, has a disadvantage in that call setup time is relatively long because a call must be established through a mobile communication network and an IP network. In order to solve this disadvantage, it is possible to provide interactive call services such as a group call and a private call by using the multicast function of the IP network. In this case, the interactive call service is a kind of call in which calls are made by mutual interactions of users. For example, PTT (Pust to talk, or " PTT ") as in Walkie-talkie. There is a function. In addition, a group call means a multi-party call between users in a predetermined group of users, and a personal call means a 1: 1 call between users in a predetermined group of users.

The PTT service is a service that enables voice / data services simultaneously for a plurality of users or groups. By pressing a button for the PTT, the PTT service indicates that the user wants to speak, and the user device, that is, the portable PTT service is available. The terminal (hereinafter referred to as "PTT portable terminal") sends a service request to the network. The network rejects the request or allocates the requested resource based on predetermined criteria such as availability of resources, priority of the requesting user, and the like. At the same time, a connection is established with all other active users in a particular subscriber group. After the voice connection is established, the requesting user can speak, and other users can listen on the channel. When the user releases the PTT, the portable terminal releasing the PTT sends a release message signal to the network, and resources are released. The PTT communication system is capable of point-to-point and point-to-multipoint communication services. Here, the point-to-multipoint communication service is called a PTT group call in the PTT service.

The PTT call between the PTT portable terminals starts from the calling PTT portable terminal requesting the PTT call to the called party's PTT portable terminal. The PTT call request is made possible by pressing the PTT button. Then, the called-party PTT portable terminal notifies that the PTT call has been received by the PTT notification sound. Accordingly, the user of the called-party PTT portable terminal recognizes the PTT notification sound to notify the reception of the PTT call, and initiates the PTT call with the caller of the calling-party PTT portable terminal. At this time, after the PTT call is initiated, the called PTT portable terminal and the calling PTT portable terminal cannot speak at the same time, and generally, after pressing and holding the PTT button, the speech is made in the state where the speech is held. can do. In this state of speaking, any one of the called-party PTT portable terminal or the calling-side PTT portable terminal is entitled to speak while the speaking right is requested and the speaking right is not granted.

However, when a PTT call is made between PTT portable terminals through a conventional PTT service, a voice is unilaterally granted, so that the conversation with the participants of the smooth PTT call cannot be made while obtaining the right to speak to other participants of the PTT call. There was a problem that can be avoided.

For example, during a PTT call to plan a trip, one of the participants in the call is given a voice and does not give the other a chance to speak. Problems could arise that would not grant the right to speak even if requested.

In addition, the participants of the PTT call in the PTT call state and insisted only on their claims about the travel plan, and did not listen to the talk about the other participants, there was a problem that a smooth PTT call may not be made.

Therefore, when a PTT call, there is a need to arbitrate the PTT call in any way for a smooth PTT call.

Accordingly, the present invention has been created to solve the above problems, PTT call to give a priority to the call participants who initiated the initial PTT call when using Push-To-Talk (PTT) service to mediate the PTT call Its purpose is to provide an arbitration method.

In addition, an object of the present invention is that the participant who initiated the initial PTT call was arbitrated by the set notification sound that informs the PTT call participants that the participant who initiated the initial PTT call and the voice of arbitration are the mediation. Informing, and providing a PTT call arbitration method to enable a smooth PTT call.

In order to achieve the above object, the present invention provides a PTT call arbitration method of a PTT portable terminal that initiates an initial PTT call by performing an INVITE on a group or individual when performing a PTT call through a push-to-talk server. The method may include: determining whether a right to speak is requested during a call with a group or an individual who has made an appointment through a PTT server, and when the right to speak is requested, transmitting a right to speak request signal to the PTT server; Entering a talk right mode in which a talk right is first given by a talk right request signal to arbitrate a talk to mediate a talk; The voice input in the speech mode arbitration mode is characterized in that the process of transmitting to the PTT server.

In addition, the present invention to the PTT call arbitration method of the PTT portable terminal that initiated the initial PTT call by inviting the group or individual when performing the PTT call through a push-to-talk (PTT) server to achieve the above object The method includes: uploading a notification sound or video data to a PTT server to notify that the right to speak of the PTT portable terminal that initiated the PTT call at the same time as the initial PTT call is started; Determining whether a right to speak is requested during a call with a group or an individual who has been invited through the PTT server, and when the right to speak is requested, transmitting a right to speak request signal to the PTT server; Receiving a priority from the PTT server according to the right to speak request signal, outputting the notification sound or video data, and entering a talk right mode to arbitrate a talk to mediate a call; The voice input in the speech mode arbitration mode is characterized in that the process of transmitting to the PTT server.

In addition, the present invention provides a PTT call arbitration method of the push-to-talk (PTT) server, to achieve the above object, forming a PTT call of the PTT portable terminal by group or individual service PTT call; Determining whether the talk right request signal has been received during the PTT call service, and if the talk right request signal is received, determining whether the PTT portable terminal requesting the talk right is an encoder PTT portable terminal that initiated an initial PTT call; Giving priority to the speaking PTT portable terminal initiating the initial PTT call; Characterized in that the process is transmitted to the PTT portable terminal of the call participant participating in the PTT call the voice transmitted through the granted talk right.

In addition, the present invention in the PTT call arbitration method of the push-to-talk (PTT) server in order to achieve the above object, a notification sound for notifying that the right to speak from the PTT portable terminal that initiated the PTT call at the same time as the initial PTT call service start Or receiving image data; Determining whether the talk right request signal has been received during the PTT call service, and if the talk right request signal is received, determining whether the PTT portable terminal requesting the talk right is an encoder PTT portable terminal that initiated an initial PTT call; Giving priority to the speaking PTT portable terminal initiating the initial PTT call; And a step of informing the PTT portable terminal of the call participant who participated in the PTT call that the speaking right is given preferentially by the received notification sound or image data.

In addition, the present invention provides a PTT server for serving a push-to-talk (PTT) call between the terminals to achieve the above object, and in the PTT call arbitration method of the PTT portable terminal receiving the PTT service through the PTT server, a group or Receiving a call through a PTT server by a PTT portable terminal which initiates an initial PTT call by inviting an individual; When the PTT portable terminal of the call participant participating in the call requests a right to speak, the PTT server determining whether the PTT portable terminal requesting the right to speak is a PTT portable terminal that initiates an initial PTT call by serving; If the determination result, if the PTT portable terminal that initiated the initial PTT call by the byte, the PTT server grants priority to the PTT portable terminal that initiated the initial PTT call; The PTT portable terminal granted the right to speak is characterized in that the process of mediating the call by mediating the speech of the participants of the PTT call through the right to speak.

In addition, the present invention provides a PTT server for providing a push-to-talk (PTT) call between terminals in order to achieve the above object, and in the PTT call arbitration method of a PTT portable terminal receiving a PTT service through the PTT server, Alternatively, the PTT portable terminal that initiated the initial PTT call by inviting an individual uploads a notification sound or video data to the PTT server side to notify that the right to speak is granted to the PTT server side, and the PTT server receives the call and then services the call. Process of doing; When the PTT portable terminal of the call participant participating in the call requests the right to speak, the PTT server determines whether the PTT portable terminal requesting the right to speak is a PTT portable terminal that initiates an initial PTT call; As a result of the determination, if the PTT portable terminal initiated the initial PTT call by the invite, the PTT server grants priority to the PTT portable terminal which initiated the initial PTT call, and the participant who participated in the PTT call with the notification sound or video data. Transmitting to the PTT portable terminal; Outputting by the PTT portable terminal receiving the notification sound or image data; The PTT portable terminal, which has been granted the right to speak, is characterized in that it consists of mediating the call by the participant's speech through the right to speak.

According to the present invention for this, when the speaking rights received from the PTT server, while speaking by the PTT portable terminal that invites the participant of the initial PTT call while speaking, the PTT server requests the speaking right. Accordingly, when a call participant is speaking or requests a right to speak at the same time as the instructor PTT portable terminal, the invoker PTT portable terminal can arbitrate a call through a mediation of origin by giving a right to speak.

This PTT group call is enabled in the call state of the PTT call through the initial PTT call processing as follows.

1 is a flowchart illustrating a general initial PTT call processing process.

Referring to FIG. 1, after step 111 through step 145, the calling PTT portable terminal 100 and the called PTT portable terminal 200 perform the first and second base stations 400 and 500 and service option negotiation to set up a traffic channel. In addition, the voice call is performed by the PTT application based on the SIP.

First, in step 111, the calling PTT portable terminal 100 transmits a PTT call request signal (INVITE) to the first base station 400 in the form of a short data burst (SDB). Immediately after transmitting the PTT call request signal (INVITE), in step 113, the calling PTT portable terminal 100 performs a service option (SO_PTT) negotiate with the first base station 400 for the PTT service, Perform TCH (Traffic Channel) setup. Here, the Nego is referred to as "Origination" as a process of preparing a higher network session from the physical layer to the application layer including the PPP session (session).

Thereafter, in steps 115 to 117, the PTT call request signal INVITE is transmitted to the first base station 400, and then to the second base station 500 where the PTT server 300 and the destination PTT portable terminal 200 are serviced. In this case, in steps 119 and 121, the second base station 500 periodically sends a paging signal (General Page) to the called PTT portable terminal 200, and the called PTT portable terminal 200 responds to the paging signal. Response) is being transmitted to the second base station 500. During the paging, in step 117, the second base station transmits the PTT call request signal (INVITE) in the form of a short data burst (SDB) to the called PTT portable terminal 200. Then, the called party PTT portable terminal 200 indicates that the PTT call has been formed and informs the called party. However, since the called PTT portable terminal 200 is not in a traffic channel setup state, no voice is transmitted to the calling PTT portable terminal 100.

Next, in step 125, the called-party PTT portable terminal 100 transmits "MS L2 Ack" to the second base station 500 as a signal indicating that the PTT call request signal INVITE is normally received by the second base station 500. Then, in step 127, the second base station 500 transmits a "BS L2 Ack" signal to the called party PTT portable terminal 200 indicating that the "MS L2 Ack" signal has been normally received to the called party PTT portable terminal 200.

Thereafter, in step 129, the called-party PTT portable terminal 200 transmits a “200 OK” message to the second base station 500 in the SDB form. Here, the "200 OK" message is a message indicating that the called PTT portable terminal has accepted the PTT call request signal (INVITE) to the calling PTT portable terminal requesting the initial PTT call.

In this case, immediately after the called-party PTT portable terminal 200 sends the "200 OK" message in step 131, the service is connected to the second base station 500 to perform a service option (SO_PTT) negotiation for a PTT service. Perform channel setup.

Next, during steps 133 to 137, the "200 OK" message is transmitted from the second base station 500 to the calling PTT portable terminal 100 through the PTT server 300 and the first base station 400, and receives the "200 OK" message. The calling PTT portable terminal 100 completes the traffic channel setup. Then, the calling PTT portable terminal 100 accepts the PTT call request from the called party and indicates that a PTT call is formed.

Subsequently, in step 139 and step 141, the calling PTT portable terminal 100 performs a step 143 after requesting a talk right to the PTT server 300 through a "SIP Ack" signal while the session is connected. The PTT server 300 controls the talk right request and gives a talk right to the calling PTT portable terminal.

In step 143, the calling-side PTT portable terminal 100 having obtained the right to speak transmits a talk burst to the PTT server 300 in real time through a Real Time Protocol (RTP). Then, the content spoken by the calling PTT portable terminal 100 in step 143 is transmitted to the PTT server 300 to be primarily buffered. Thereafter, the talk burst of the called PTT portable terminal 200 buffered in the PTT server 300 is determined by the called PTT server in the PTT server through the RTP depending on whether the traffic channel setup of the called PTT portable terminal 200 is completed. It is transmitted to the portable terminal 200. That is, the PTT server 300 transmits the buffered speech contents after the traffic channel setup of the called-party PTT portable terminal 200 is completed.

Thereafter, the calling PTT portable terminal 100 and the called PTT portable terminal 200 do not need to communicate with the PTT server 300 according to the completion of the traffic channel setup, and the response signal to the aforementioned "SIP Ack" signal and the "SIP Ack" signal. You can speak with only "Ack".

Meanwhile, the point-to-multipoint communication service is referred to as a PTT group call in the PTT service through the above-described process, and the PTT call through the caller who initiated the initial PTT call during the PTT group call, ie, INVITER. The process of arbitrating is described as follows.

2 is a flowchart illustrating a signal processing process during PTT call arbitration according to an embodiment of the present invention. Here, the first and second PTT portable terminals may be the called PTT portable terminal or the calling PTT portable terminal of FIG. 1. In this case, although only the first and second PTT portable terminals are shown in FIG. 2, it should be noted that further third to Nth PTT portable terminals for PTT group call are omitted. In addition, the PTT call arbitration is possible not only for the PTT group call but also for the point-to-point PTT call.

Referring to FIG. 2, first, assuming that the first PTT portable terminal is an initial divider, a PTT group call is formed in step 211 through the initial PTT call processing process of FIG. ) Is formed.

Thereafter, in step 213, the second PTT portable terminal 210 transmits a " SIP Ack " signal to the second base station 510 and requests that the talk right be granted. Upon receiving the "SIP Ack" signal, the second base station 510 transmits the "SIP Ack" signal to the PTT server 310 in step 215.

Then, in step 217 to 219, the second PTT portable terminal 210 receives an "Ack" signal to give the talk right from the PTT server 310 through the second base station 510.

Accordingly, the second PTT portable terminal 210 obtains a right to speak in step 221 and can speak through the acquired right to speak. In this case, the first PTT portable terminal 110 transmits a "SIP Ack" signal to the first base station 410 in step 223, and the first base station 410 transmits the "SIP Ack" signal received to the PTT server 310 in step 225. send. In step 227, the PTT server 310 checks whether the first PTT portable terminal 110 that has transmitted the "SIP Ack" signal is an initiator that initiated an initial PTT call. As a result of the check, since the first PTT portable terminal 110 initiated the initial PTT call, the PTT server transmits an "Ack" signal to give the right to speak in response to the "SIP Ack" signal in step 229. The first base station 410 transmits the "Ack" signal received from the PTT server 310 to the first PTT portable terminal 110 in step 231. In this case, the PTT server 310 transmits a speech arbitration notification sound indicating the speech arbitration mode to arbitrate the speech in step 233 to the first PTT portable terminal 110 and the second PTT portable terminal 210. This, the detailed description for the service to speak mediation notification sound will be described later.

Accordingly, even if the second PTT portable terminal 210 has been given the right to speak, the PTT server 310 preferentially speaks the right to speak when the first PTT portable terminal 110 of the Initiator who initiated the first PTT call requests the right to speak. Grant.

Thereafter, the first PTT portable terminal 110 having obtained the right to speak transmits a "SIP Ack" signal to the PTT server 310 through steps 235 to 237 to request the right to speak again. In step 243, the PTT server 310 transmits a "SIP Ack" signal to the PTT server 310 so as to request a right to speak. The PTT server 310 checks the initiator that initiated the initial PTT call. As a result, in step 245, the PTT server 310 transmits an "Ack" signal to the first base station 410 to confirm that the first PTT portable terminal 110 is the divider and grants a right to speak. Proceed to the step transmits the "Ack" signal to the PTT portable terminal 110. Thus, the first PTT portable terminal 110 obtains the right to speak. In this case, likewise, the PTT server 310 transmits a speech arbitration notification sound indicating the speech arbitration mode to the first PTT portable terminal 110 and the second PTT portable terminal 210. Here, the talk right arbitration notification sound is a notification sound basically provided by the PTT server 310. However, the PTT server 310 may not be provided by default, and may be able to notify the speech right mode by using a unique notification sound according to a user's selection. In this case, when the PTT call is connected, the speech arbitration notification sound set by the PTT portable terminal is uploaded to the PTT server 310 to enable the call. In addition, not only the speech right arbitration notification sound indicating the speech arbitration mode, but also image data, for example, a picture may be uploaded to the PTT server 310. Then, when entering the talk mode arbitration mode by the encoder, the PTT server 310 transmits the picture to the participants of the PTT group call together with the talk mode arbitration sound set by the encoder. As a result, the participants of the PTT group call are aware that the talk arbitration mode is granted by the divider.

In the above-described PTT group call, a PTT portable terminal and a PTT server that arbitrate a voice by an encoder will be described in detail with reference to the accompanying drawings.

It should be noted that in the following description, only parts necessary for understanding the operation and operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

In the following description specific details of PTT call mediation according to the invention are presented to provide a more general understanding of the invention. It will be apparent to those skilled in the art that the present invention can be easily implemented by these modifications.

3 is a diagram illustrating a configuration of a PTT portable terminal according to an embodiment of the present invention. Here, the PTT portable terminal may be a PTT portable telephone, and the PTT portable telephone may be a first PTT portable terminal of an initiator that initiated the first PTT call in FIG.

Referring to FIG. 3, the RF unit 21 performs communication of the portable terminal. The RF unit 21 includes an RF transmitter for upconverting and amplifying a frequency of a transmitted signal, and an RF receiver for low noise amplifying and downconverting a received signal. In addition, the RF unit 21 performs communication between the PTT server and the base station in the PTT call state.

The modem 23 includes a transmitter for encoding and modulating the transmitted signal and a receiver for demodulating and decoding the received signal. That is, the modem 23 processes packet data or the like or audio signals such as voice.

The audio processor 25 receives the received audio signal output from the modem 23 from the controller 10, converts the received audio signal into an audible sound through the speaker SPK, and outputs the audio signal input from the microphone MIC to the controller 10. In addition, the audio processor 25 receives a voice signal through the microphone MIC during the PTT group call under the control of the controller 10, and converts the voice signal to data to the controller 10. In addition, when receiving the PTT call, the audio processor 25 processes the audio data corresponding to the PTT notification sound under the control of the controller 10 and transmits the PTT notification sound to the speaker SPK. The audio processor 25 converts the audio signal of the PTT group call received from the controller 10 into an audible sound through the speaker SPK during the PTT group call.

The keypad 27 is provided with keys for inputting numeric and text information and function keys for setting various functions. In addition, the keypad 27 may include function keys according to a PTT call and function keys according to a voice arbitration mode.

The memory 29 may be composed of program memory and data memories. The program memory stores programs for controlling a general operation of the PTT portable terminal. In addition, the program memory stores a PTT application program for performing a PTT call. In addition, the program memory is stored in the program according to the speech mode arbitration mode through communication with the PTT server. In addition, the data memory temporarily stores data generated during the execution of the programs. In addition, the data memory stores a speech right arbitration notification sound and video data uploaded to the PTT server in the speech right moderation mode.

The controller 10 performs a function of controlling the overall operation of the PTT portable terminal. In addition, the controller 10 may include a modem 23. In addition, when the PTT call is received, the controller 10 transmits audio data corresponding to the notification sound upon receiving the PTT call to the audio processor 25. In addition, the controller 10 controls an operation of displaying a call participant who has obtained a talk right during a call through a PTT call. In addition, the controller 10 preferentially gives the right to speak from the PTT server when the instructor who initiated the initial PTT call in the point-to-point communication or the point-to-multipoint communication through the PTT call requests the right to speak to the PTT server. Right to control the overall operation to enter into moderation mode to exercise the right to speak. In addition, the controller 10 controls the overall operation of uploading the video data set by the Invoter to arbitrate the voice through the speech right moderation notification sound and the speech right mode arbitration mode when the initial PTT call access.

The display unit 80 displays messages generated during program execution under the control of the controller 10 and displays user data output from the controller 10. Here, the user data means icons indicating the remaining battery capacity, reception sensitivity rate, and the presence of a wake-up call, and the current time. In addition, the display unit 80 displays the participants participating in the call through the PTT call. In addition, the display unit 80 displays the presence or absence of the right to speak with the participant information obtained the right to speak during the call through the PTT call. In addition, the display unit 80 indicates that the speech arbitration mode in the speech arbitration mode. The display unit 80 may use an LCD. In this case, the display unit 80 may include an LCD controller, a memory capable of storing image data, and an LCD display device. In this case, when the LCD is implemented in a touch screen manner, the keypad 27 and the LCD may be input units.

Referring to the operation of the PTT portable terminal of FIG. 3 described above, when the user sets a dialing mode after performing a dialing operation through the keypad 27, the control unit 10 detects this and dial information received through the modem 23. After processing the RF signal through the RF unit 21 to output. After the counter subscriber generates a response signal, it detects it through the RF unit 21 and the modem 23. Thereafter, a user establishes a voice call path through the audio processor 25 to perform a communication function. In addition, in the incoming mode, the controller 10 detects the incoming mode through the modem 23 and generates a ring signal through the audio processor 25. Thereafter, when the user responds, the controller 10 detects this, and a voice call path is formed through the audio processor 25 to perform a communication function. In the outgoing and incoming modes, voice communication is described as an example, but a data communication function for communicating packet data and image data in addition to the voice communication may be performed. In addition, when performing a standby mode or text communication, the controller 10 displays text data processed through the modem 23 on the display 35. In addition, voice communication during a PTT group call according to the PTT application of the present invention can be performed, and communication data of packet data through PTD (Push To Data) is also possible.

Looking at the operation according to the speech right arbitration mode to mediate the voice in the PTT call state of the PTT portable terminal as follows.

First, the controller 10 receives voices of participants of the PTT call input to the RF unit 21 and the modem 23 through the PTT application program, and outputs the voice to the microphone MIC through the data processing of the audio processor 25. The controller 10 obtains a voice from the PTT server, receives the voice signal input to the speaker SPK from the audio processor 25 for data processing, and transmits the voice signal to the PTT server through the modem 23 and the RF unit 21. At this time, the display unit 80 displays the presence or absence of the right to speak in the information of the participants having the right to speak. Such data generated during the PTT group call are temporarily stored in the memory 29. The controller 10 obtains a talk right in the PTT call state, and when the talk right arbitration mode is executed, the controller 10 outputs a talk right arbitration notification sound to the microphone MIC, and displays a message indicating that the talk right arbitration mode is displayed on the display 80. Image data related to the pointer is displayed to visually recognize that the pointer has obtained the right to speak.

A process of the PTT portable terminal for mediating the right to speak in the PTT call state of the present invention described with reference to FIGS. 1 to 3 will be described later.

4 is a flowchart illustrating a PTT call arbitration method of a PTT portable terminal according to an embodiment of the present invention. Here, the PTT portable terminal transmits the above-described "INVITE" to the counterpart party to make a call, and the PTT portable terminal transmitting the "INVITE" becomes an indirector, and the PTT call arbitration through the PTT portable terminal of such an encoder Describe the method.

Referring to FIG. 4, in step 411, the controller 10 accesses the PTT call and displays a list of the specific group of the PTT call or the specific PTT call accessor on the display 80. In step 413, the controller 10 uploads the floor right notification sound or image data to the PTT server. Here, the speech arbitration notification sound may be a bell / melody or voice data directly input by the user, and the image data may be a still image, that is, a photo. The process of uploading the speech arbitration notification sound or image data to the PTT server is not an essential component in the present invention. However, the following is only a process originating from one method for notifying the call participants participating in the PTT call in the voice mode.

In step 415, the controller 10 detects a group or an individual selected for a call from the list displayed on the display unit 80 through a PTT call, and proceeds to step 417 to perform an PTT to invite the detected group or individual. Send "INVITE" signal to server side. Here, the "INVITE" signal is transmitted to the PTT server through the base station as described above. Then, the PTT server initiates a call through the PTT call with the group or the individual in step 419 to make a call with the group or the individual.

In this case, the control unit 10 determines whether to speak the right to speak to the PTT server side in step 421 and requests the voice to proceed to step 423 and transmits a talk right request signal to the PTT server side. In this case, in order to check whether the right to speak is requested to the PTT server side, it generally detects whether a push-to-talk (PTT) button is input for a predetermined time or more.

Then, the PTT server checks whether the PTT portable terminal that requested the right to speak is an indicator that initiated an initial PTT call, and whether or not to speak is determined according to the confirmation. Here, confirming that the PTT server is an indicator is to give priority to the request for the right to speak in order to mediate the right to speak. So, PTT service to make a smooth call in the PTT call state. At this time, the detailed PTT call mediation process of the PTT server will be described later when describing the PTT call mediation method of the PTT server.

In step 425, the control unit 10 receives the talk right from the PTT server, and simultaneously proceeds to step 427 to output the talk right arbitration notification sound or image data. At this time, the PTT portable terminal of the call participant who participated in the PTT call receives and displays the talk right arbitration notification sound and the video data from the PTT server.

In step 429, the controller 10 obtains a voice and transmits the input voice to the PTT server. As a result, the voice transmitted to the PTT server is transmitted to the PTT portable terminal of the call participant, and the PTT portable terminal of the encoder acquires the speaking right, so that the speaking right cannot be requested in the speaking right arbitration mode, and the speaking right is transmitted to the PTT server side. If you ask, you cannot be given a voice. In this case, the call with the call participants is made through the SIP base, and the description thereof is as described above, and thus the detailed description thereof is omitted.

Thus, by giving priority to the PTT portable terminal that initiated the initial PTT call, it is possible to mediate the call through the speech right mode by depriving the speaking participant of the talking participant.

On the other hand, if the result of the determination does not require the right to speak, through the step 419 to hear the contents of the conversation between the call participants of the PTT call. In this case, the general voice request and the right to speak are granted to proceed with the call.

5 is a flowchart illustrating a PTT call arbitration method of a PTT server according to an embodiment of the present invention.

Referring to FIG. 5, the PTT server services a PTT call between PTT portable terminals formed by an encoder transmitting an byte signal to make a PTT call in step 511. At this time, the PTT server receives the image data or the speech right arbitration notification sound from the PTT portable terminal of the encoder before the PTT call service. In this case, the process of receiving the image data or the speech arbitration notification sound is not an essential component in the present invention. It is merely a process originating from one method for notifying the call participants participating in the PTT call that the PTT server is in the speech arbitration mode.

Thereafter, the PTT server grants a talk right to the PTT portable terminal requesting a talk right in step 513 and services a PTT call. During the above process, the PTT server determines whether it has received the talk right request signal in step 515, and if it receives the talk right request signal, it proceeds to step 517 when the PTT portable terminal which transmits the talk right request signal initiates an initial PTT call. Determine if it is an divider. Thus, if the PTT portable terminal that transmits the talk right request signal is the instructor, the PTT server is granted a talk right in step 519 to determine whether there is a PTT portable terminal of the participant who is speaking.

As a result of the determination, if there is a PTT portable terminal of the participant who is speaking, the PTT server deprives the speaking right of the PTT portable terminal in the speaking in step 521, and gives priority to the PTT portable terminal of the encoder. . In step 523, the voice of the participant who participated in the PTT call is transmitted to the PTT portable terminal of the call participant who has received the speech right arbitration notification sound and the image data received from the PTT portable terminal. Indicate that the voice is in mediation mode. Here, the process of transmitting the speech arbitration notification sound and the image data is possible when the PTT portable terminal of the Initiator who initiated the initial PTT call in step 511 uploads the speech arbitration notification sound and the image data to the PTT server. It is a process. Therefore, it is not necessary to notify the floor right mode through only the floor right notification sound and image data in step 523.

If the PTT portable terminal of the encoder does not transmit the talk right arbitration notification sound and the image data, the PTT server may inform the talk right arbitration mode only with a basic notification sound.

Thereafter, the PTT server transmits the voice spoken by the PTT portable terminal of the encoder to the PTT portable terminal of the call participant. At this time, the PTT server does not grant the right to speak even if the PTT portable terminal of the call participant requests the right to speak. However, if the PTT portable terminal of the encoder requests the right to speak, any PTT portable terminal obtains the right to speak and gives the right to speak.

On the other hand, if the determination result of step 517, the PTT server, if not the initiator that initiated the initial PTT call, the PTT server ignores the voice request signal in step 525.

In addition, if there is no PTT portable terminal speaking in step 519, the PTT server grants a right to speak to the PTT portable terminal of the encoder in step 519, and proceeds to step 523 to notify the talk right mode.

Therefore, in the PTT call arbitration method of the present invention, when the PTT portable terminal, ie, the Initiator, requests the talk right, which is initially initiated by the PTT call through the PTT server, the PTT server gives the talker priority by giving the talk right. May arbitrate.

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 the equivalents of the claims.

As described in detail above, the present invention has the effect of smoothly arbitrating the PTT call by granting a priority to the PTT portable terminal of the initiator that initiated the initial PTT call in the PTT call state. have.

In addition, in the speech right mode that preferentially grants the right to speak to the PTT portable terminal of the encoder, it is notified by the notification sound or video data, so that the call participants of the PTT call can easily recognize that the current PTT call state is the voice right mode. It can be effected.

Claims (14)

In the PTT call arbitration method of the PTT portable terminal that initiated the initial PTT call by inviting a group or individual when performing a PTT call through a push-to-talk (PTT) server, Determining whether to request a right to speak during a call with a group or an individual who has received a service through a PTT server, and when the right to speak is requested, transmitting a voice request signal to the PTT server; Entering a talk right mode in which a talk right is first given by a talk right request signal to arbitrate a talk to mediate a talk; The method comprising the step of transmitting the voice input to the PTT server in the speech mode arbitration mode. The method as claimed in claim 1, wherein the step of entering the voice mode arbitration mode further comprises the step of receiving a voice right and displaying a notification sound or displaying image data. The method as claimed in claim 2, wherein the image data is image data indicating a talk right arbitration mode received from a PTT server. The method as claimed in claim 2, wherein the notification sound is received from a PTT server. The method as claimed in claim 2, wherein the notification sound or image data also sounds in the PTT portable terminal of the call participant participating in the PTT call, and the image data is displayed. The method as claimed in claim 2, wherein the notification sound is a ring tone / melody preset to notify that the voice is in a mode of arbitration. The method as claimed in claim 2, wherein the notification sound or the image data is preset by a user. In the PTT call arbitration method of the PTT portable terminal that initiated the initial PTT call by inviting a group or individual when performing a PTT call through a push-to-talk (PTT) server, Uploading a notification sound or video data to the PTT server to notify that the right to speak of the PTT portable terminal which initiated the PTT call is simultaneously provided with the initial PTT call; Determining whether a right to speak is requested during a call with a group or an individual who has been invited through the PTT server, and when the right to speak is requested, transmitting a right to speak request signal to the PTT server; Receiving a priority from the PTT server according to the right to speak request signal, outputting the notification sound or video data, and entering a talk right mode to arbitrate a talk to mediate a call; The method comprising the step of transmitting the voice input to the PTT server in the speech mode arbitration mode. In the PTT call arbitration method of the push-to-talk (PTT) server, Forming a PTT call of a PTT portable terminal which has a group or individual serving a PTT call; Determining whether the talk right request signal has been received during the PTT call service, and if the talk right request signal is received, determining whether the PTT portable terminal requesting the talk right is an encoder PTT portable terminal that initiated an initial PTT call; Giving priority to the speaking PTT portable terminal initiating the initial PTT call; And transmitting the voice transmitted through the given talk right to a PTT portable terminal of a call participant participating in a PTT call. 10. The method as claimed in claim 9, wherein the PTT portable terminal requesting the talk right ignores the talk request signal unless the PTT portable terminal initiated the initial PTT call. The method as claimed in claim 9, wherein the step of giving priority to the voice further comprises informing the user of the voice arbitration mode in which the voice is given preferentially through a notification sound or image data. In the PTT call arbitration method of the push-to-talk (PTT) server, Receiving a notification sound or video data for informing that the right to speak is granted from the PTT portable terminal which initiated the PTT call at the same time as the initial PTT call service is started; Determining whether the talk right request signal has been received during the PTT call service, and if the talk right request signal is received, determining whether the PTT portable terminal requesting the talk right is an encoder PTT portable terminal that initiated an initial PTT call; Giving priority to the speaking PTT portable terminal initiating the initial PTT call; And a step of informing the PTT portable terminal of the call participant who participated in the PTT call that the voice is given preferentially by the received notification sound or image data. In the PTT server for providing a push-to-talk (PTT) call between the terminals, and the PTT call arbitration method of the PTT portable terminal receiving the PTT service through the PTT server, Receiving a call through a PTT server by a PTT portable terminal which initiates an initial PTT call by inviting a group or an individual; When the PTT portable terminal of the call participant participating in the call requests a right to speak, the PTT server determining whether the PTT portable terminal requesting the right to speak is a PTT portable terminal that initiates an initial PTT call by serving; If the determination result, if the PTT portable terminal that initiated the initial PTT call by the byte, the PTT server grants priority to the PTT portable terminal that initiated the initial PTT call; The method, characterized in that the PTT portable terminal has been given the right to speak to mediate the call participants of the PTT call through the right to speak. In the PTT server for providing a push-to-talk (PTT) call between the terminals, and the PTT call arbitration method of the PTT portable terminal receiving the PTT service through the PTT server, Upload the notification sound or video data to the PTT server to notify the PTT server that the PTT portable terminal that initiated the initial PTT call by inviting the group or individual to the PTT server side, and the PTT server receives the call Servicing process; When the PTT portable terminal of the call participant participating in the call requests a right to speak, the PTT server determining whether the PTT portable terminal requesting the right to speak is a PTT portable terminal that initiates an initial PTT call by serving; As a result of the determination, if the PTT portable terminal initiated the initial PTT call by the invite, the PTT server grants priority to the PTT portable terminal which initiated the initial PTT call, and the participant who participated in the PTT call with the notification sound or video data. Transmitting to the PTT portable terminal; Outputting by the PTT portable terminal receiving the notification sound or image data; The method, characterized in that the PTT portable terminal has been given the right to speak by mediating the call participants' speech through the right to speak.

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