KR100890262B1 - Method of communication using Push To Talk protocol in portable terminal - Google Patents

Abstract

The present invention relates to a PTT communication method of a mobile terminal, the present invention, in the PTT communication method using a PTT server, in the PTT communication mode in response to a predetermined key input signal in the process of obtaining a voice, and the key The present invention provides a PTT communication method of a mobile terminal, comprising: transmitting a mapped effect sound according to a preset talk right mode and returning a talk right according to the talk right mode.

PTT, handheld terminal, long key, short key

Description

{Method of communication using Push To Talk protocol in portable terminal}

1 is a schematic overall block diagram of a mobile communication system employing a Push To Talk (PTT) method to which the present invention is applied.

2 is a diagram schematically illustrating an example of a configuration of a mobile terminal according to an exemplary embodiment of the present invention.

3A to 3E are screen examples for explaining a method for setting sound effects according to an embodiment of the present invention.

4 is a flow chart for explaining a PTT communication method of the portable clear according to an embodiment of the present invention.

5 is a flowchart illustrating a PTT communication method of a mobile terminal according to another embodiment of the present invention.

The present invention relates to a mobile terminal, and more particularly, to a call method of a mobile terminal having a push to talk (PTT) function.

PTT is a term used to describe the basic communication method of the radio.The user operates the PTT key appropriately provided in the radio or the TRS (Trunked Radio System) terminal. Releasing PTT key) This is a method to make a call operation to the other party. This PTT call allows one-to-one or one-to-many instant communication.

Recently, a so-called Internet telephony service is provided in which a unique IP (Internet Protocol) address is assigned to a mobile terminal using a Voice over IP (VoIP) protocol in a mobile communication system. The portable terminal using the VoIP protocol can provide a mobile communication PTT service in a one-to-one or one-to-many format as a radio.

The PTT service is a service that enables voice / data services simultaneously among a plurality of users or groups among mobile communication terminal users.

When a user requests a PTT service, the user presses a PTT key appropriately provided in advance for a PTT-enabled mobile communication terminal. Accordingly, the PTT portable terminal transmits a PTT service request to the mobile communication network.

The mobile communication network rejects the request or allocates the requested resource according to criteria such as availability of resources and priority of the requesting user. This establishes a connection with all other active users of a particular user group.

At this time, the called-party PTT portable terminal notifies the user that the PTT call request has been received by outputting an appropriate notification sound and displaying a message.

Accordingly, the called-party PTT portable terminal user recognizes that a PTT call request has been received, and initiates a PTT call with the caller of the calling-party PTT portable terminal.

After the voice connection is established, the service requesting user can transmit voice, and other users can hear the transmitted voice on the channel.

Currently, in the PTT communication method, only a voice signal that enters into the microphone of the portable terminal can be transmitted during the PTT call.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method for transmitting a predetermined sound effect to the PTT communication counterpart.

Another object of the present invention is to provide a method for transmitting a preset sound effect to a PTT communication counterpart without the hassle of pressing a PTT key.

PTT communication method of a mobile terminal using a PTT server according to an embodiment of the present invention for achieving the above object, in the PTT communication mode in response to a predetermined key input signal to obtain a right to speak, the key And transmitting the mapped effect sound according to a preset talk right mode and returning a talk right according to the talk right mode.

The returning of the right to speak may include returning the sound immediately after the effect sound is transmitted when the right to speak mode is an immediate return mode.

The returning of the right to speak may include detecting whether the preset key is pressed when the speaking right mode is a maintenance mode, and returning a speaking right when the key is pressed by a long key. Here, the long key is a key input signal that lasts a predetermined time while the key is pressed. The method may further include detecting whether the preset key is pressed, and transmitting a sound effect mapped to the key when the key is pressed as a short key. The short key may be a key input signal in which the key is pressed once and released.

The utterance right acquisition includes detecting a key input signal of any one of the preset keys, requesting a utterance right from the PTT server according to the key input signal, and obtaining a utterance right from the PTT server. Characterized in that made.

The preset key is a key set to be mapped with the sound effect.

When the PTT server receives the request to speak from a specific portable terminal, the PTT server allocates the speak right and grants the allocated talk right to the portable terminal.

The process of acquiring the right to speak may perform a reception mode when the right to speak is not obtained.

The reception mode is a state in which only a reception is possible without transmitting a voice signal.

The key may be any one or more of one key and two or more key combinations.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Prior to the description, in the embodiment of the present invention, the mobile terminal will be described using a mobile communication terminal as an example, but the present invention is not limited thereto. Therefore, the portable terminal according to an embodiment of the present invention is a terminal capable of implementing a PTT method, preferably a mobile communication terminal, a digital broadcasting terminal, a personal digital assistant (PDA), a smart phone, an IMT. Applicable to all information communication and multimedia devices, such as the International Mobile Telecommunication 2000 (2000) terminal, the Wideband Code Division Multiple Access (WCDMA) terminal and the Universal Mobile Telecommunication Service (UMTS) terminal, and their applications will be apparent. .

Hereinafter, a communication method of a PTT type mobile terminal according to an exemplary embodiment of the present invention will be described.

1 is a schematic overall block diagram of a mobile communication system employing a push to talk (PTT) method to which the present invention is applied.

Referring to FIG. 1, a mobile communication system employing a PTT method includes a plurality of base station transceiver systems that provide a mobile communication service by communicating with a plurality of mobile terminals 101, 102, and 103 located in a corresponding service area. (111) and (112).

A plurality of base stations 111 and 112 are connected to a mobile switching center (MSC), which is connected to a PTT server 130 through a data network.

The PTT server 130 manages PTT user groups in real time, including mediating, maintaining and distributing PTT communication requests, as well as distributing registration lists for each subscriber, as well as setting up and separating calls for necessary systems and network resources, as well as overall control of the PTT user groups. Perform the action.

The PTT server 130 is a PoC (PTT over Cellular) server 132 performing a communication function for the PTT service in the mobile communication network, PTT subscriber information and group list of each subscriber (aka 'buddy list, buddy list) And a Group and List Management Server (GLMS) server 134 for managing the " "

In addition, the PTT server 130 may grant a floor to any one of the mobile terminals 101, 102, and 103 that are currently connected.

Each of the mobile terminals 101, 102, and 103 has a PTT module for performing a PTT related operation including a PTT call request to the PTT server 130, and performs a PTT call request of a predetermined format when performing a PTT call. Wireless transmission to (111, 112). The MSC 120 provides a PTT call request from the mobile terminal 101, 102, 103 to the PTT server 130 via the base station 112, 112, which includes the PTT request. An IWF (Inter Working Function) is provided to process the data packet with the server 130.

On the other hand, the user can access the PTT server 130 through the mobile terminal (101, 102, 103) and modify the group list information and personal information set by the user, such as new, change and delete. In addition, the user may access the PTT server 130 through the Internet using the PC 104, and modify the group list and personal information set by the PTT server 130.

Hereinafter, a schematic configuration of a mobile terminal according to an embodiment of the present invention will be described. 2 is a diagram schematically illustrating an example of a configuration of a portable terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the configuration of a mobile terminal according to an exemplary embodiment of the present invention may include a wireless communication unit 210, an audio processor 220, an input unit 230, a storage unit 240, a display unit 250, and a controller ( 260).

The wireless communication unit 210 is responsible for a series of communications for wirelessly transmitting and receiving user data, for example, a message such as a message and a voice, to another external mobile terminal. The wireless communication unit 210 includes an RF (Radio Frequency) transmitter for up-converting and amplifying a frequency of a signal to be transmitted, and an RF receiver for low noise amplifying and down-converting a received signal. The modulated signal received from the controller 260 is converted into an intermediate frequency, and then converted into a high frequency (RF) signal and transmitted to the base station through an antenna. The radio frequency signal is received from the base station through the antenna and is converted into an intermediate frequency and a baseband. The conversion is provided sequentially to the control unit 260.

The audio processor 220 plays a function of reproducing the audio signal output from the controller 260 or transmitting an audio signal such as a voice input from the microphone MIC to the controller 260. That is, the analog voice signal received from the microphone (MIC) is converted into a digital signal (PCM, Pulse code modulation) and transmitted to the control unit 260. In addition, the digital signal PCM of the opposite voice coming from the controller 260 is converted into an audible analog signal, and serves to send to the speaker SPK.

The input unit 230 includes a plurality of input keys and function keys for receiving numeric or character information and setting various functions. The function keys may include direction keys, side keys, shortcut keys, and the like, which are set to perform a specific function. In addition, the input unit 230 includes a dedicated PTT key for performing the PTT function and transmits the corresponding key input data to the controller when a specific key is input from the user. The PTT key may be provided separately or may use one of the conventionally provided function keys. In addition, the input unit 230 transmits a key signal input in relation to user setting and function control of the portable terminal to the controller 260.

The storage unit 240 stores an application required for operating a function according to an exemplary embodiment of the present invention, content to be downloaded, and user data generated by the user. The storage unit 240 may include one or more buffers for temporarily storing user data generated while executing a predetermined application program, for example, a text message application program. The storage unit 240 may include a program area and a data area. The program area stores an operating system (OS) for booting the portable terminal, an application program required for a text message, and the like. When activating each function according to a user request, each function is provided through corresponding application programs under the control of the controller 260. The data area is an area in which data generated according to the use of the mobile terminal is stored, and may store sound effects transmitted during PTT communication according to an embodiment of the present invention. In addition to such sound effects, various sound sources or sound files may be stored. For example, an audio file such as MP3 or the like may be stored.

The display unit 250 visually provides a menu of the portable terminal, user data input by the user, function setting information, and various information to the user. The display unit 250 may be formed of a liquid crystal display. If the LCD is formed in the form of a touch screen, the display unit 250 may perform some or all of the functions of the input unit 230.

The controller 260 controls the overall operation of the mobile terminal and the signal flow between the internal blocks of the mobile terminal. That is, the controller 260 controls the signal flow between the components of the wireless communication unit 210, the audio processor 220, the input unit 230, the storage unit 240, and the display unit 250.

The controller 260 performs each function of the portable terminal according to an input signal (for example, key data) input from the input unit 230, and displays information on the current state and user menu according to the execution of the function. Display through.

In particular, the controller 260 converts the PCM voice signal provided from the audio processor 220 through channel coding and interleaving and modulates the voice signal to the wireless communication unit 210 when processing a voice signal for a telephone call. It provides a voice signal provided from the wireless communication unit 210 as a PCM voice signal through demodulation, equalization, channel decoding and deinterleaving, and sends it to the audio processor 220. . In order to perform this function, a modem and a codec may be included. The codec includes a data codec for processing packet data and an audio codec for processing an audio signal such as voice.

In addition, the controller 260 is provided with a PTT module for performing a PTT service, and performs a PTT call operation according to an embodiment of the present invention.

Referring to the operation of the mobile terminal having the configuration as shown in FIG. 2, when the user performs the dialing operation using the input unit 230 and sets the dialing mode, the controller 210 detects this and inputs the dial information. After processing, the wireless communication unit 210 converts the signal into a wireless signal and outputs it. Thereafter, the control unit 260 forms a voice call path so that the response signal (signal tone) of the counterpart subscriber received through the wireless communication unit 210 is output to the speaker SPK through the audio processing unit 220. Accordingly, the mobile terminal can perform a communication function.

In the reception (or incoming) mode, the controller 260 detects that the reception mode is received through the wireless communication unit 210, and generates a ring tone through the audio processor 220. After the user's response (hook off), the control unit 260 detects this, and likewise performs a communication function by forming a voice call path through the audio processor 220.

In the outgoing and receiving modes, voice communication is described as an example, but the PTT call operation according to the input of the PTT key is similarly performed. However, in the voice communication mode, the origination and reception mode may be simultaneously performed, but in the PTT communication mode, the origination mode is possible only when a floor is obtained, and in the case of not obtaining the speech, only the reception mode is possible.

Hereinafter, a method for performing PTT call according to an embodiment of the present invention will be described. First, the concept of the present invention will be briefly described. The present invention is set to map the sound effect according to the PTT call to a predetermined key, and delivers the sound effect set according to the key input. Due to the nature of the PTT call, such a sound can be transmitted only after obtaining a voice. Thus, a key mapped with the sound can perform the same function as a PTT key, that is, a voice request. Such a request for a right to speak may be divided into an immediate return mode and a maintenance mode, which will be described below, and differ in a method for returning a talk and transmitting a sound effect according to each mode.

Such a sound effect transmission method may transmit various sound effects other than a voice signal, and may exhibit individual characteristics by transmitting sound effects. In addition, when a multi-party call of the PTT method that a plurality of members can talk, the effect sound set by the user may be able to distinguish each member.

Next, a method of setting an effect sound for implementing the above description will be described.

First, a method for setting an effect sound according to an exemplary embodiment of the present invention will be described. 3A to 3E are screen examples for explaining a method for setting an effect sound according to an exemplary embodiment of the present invention.

Referring to this, if there is a key input signal for setting the PTT effect sound of the user in the standby mode, the controller 260 detects this and displays the PTT effect sound setting screen for setting the sound effect through the display unit 250.

An example of such a screen is shown in FIG. 3A. As shown in the figure, the submenu includes a "1. sound effect recording" menu, a "2. sound effect setting" menu, and a "3. origin setting mode" menu.

If the user selects the " 1. Sound effect recording " menu while displaying the PTT sound effect setting screen, the controller 260 detects this and displays the sound effect recording screen. This sound recording screen is shown in Fig. 3b. As shown, this sound recording screen provides a call up 301, a recording 303, a playback 305, a stop 307, and a registration 309 button for editing the effect sound.

Here, the recall 301 button is for recalling the pre-stored effect sounds, and the record 403 button is for recording the effect sounds. The play 305 button is for listening to the recorded content, and the stop 307 button is for stopping the play or recording function. In addition, the setting button 309 is for mapping the recorded content to a specific key. In the above-described screen (FIG. 3B), the controller 260 may record the sound effect according to the input signal of the user. The recorded sound effects can be mapped to specific keys and registered. This sound effect registration screen is shown in Fig. 3C.

When the user selects the setting button 309 in the state of recording the sound effect, the controller 260 detects this and displays a screen as shown in FIG. 3C. In such a screen, when a user inputs a desired key and inputs a registration 311 button, a corresponding sound effect is mapped to the input key. For example, when the user inputs the numeric key "3" and the register 311 button while recording the effect sound, the corresponding sound effect is mapped to the numeric key "3".

In this way, you can map to a variety of keys, and not just one key, but a combination of numeric keys. An effect sound registration screen of this example is shown in FIG. 3D.

Referring to the mapping method of the numeric key combinations, the controller 260 displays the effect sound recording screen when the setting 309 button is selected while the sound effect is recorded 303 or recalled 301. At this time, when the user selects "2468" and selects the registration 311 button, the numeric key combination "2468" is mapped and registered to the corresponding sound effect.

On the other hand, when the user selects the menu "3. speak rights setting" in the state of displaying the PTT sound effect setting screen, the controller 260 detects this, and displays the origin right mode setting screen. An example of such a screen is illustrated in FIG. 3E.

In the illustrated screen, the user can select one of "immediate return mode" and "hold mode" through a radio button. When the user selects the setting button 313, the controller 260 detects this and sets the selected mode.

In this case, the immediate return mode is a mode in which when the PTT call is connected and the sound effect mapped to a predetermined key is transmitted to the other party, the sound right is returned immediately after the sound sound is transmitted. In this mode, the right to speak is returned only when a predetermined key is pressed with a long key.

As described above, according to an embodiment of the present invention, it is possible to record the sound effect, and map the recorded sound effect to a specific key or key combination. In addition, the above-described setting method is only an embodiment of the present invention, and in addition to the above-described method, the effect sound may be mapped to the key and the key combination. There may be various ways to maintain or return the floor.

Then, as described above, a method of performing PTT communication in the set state will be described.

4 is a flowchart illustrating a PTT communication method of the portable short clearing according to an embodiment of the present invention.

Here, it is assumed that the talk right mode setting of the portable terminal is set to the return mode immediately.

Referring to FIG. 4, the controller 260 enters the PTT communication mode in step S401 through a call connection for PTT communication and a process of registering with the PTT server 130.

When entering the PTT communication mode, the control unit 260 checks the speaking mode setting in step S403. As a result of the check, if the talk right mode is the return mode immediately, the controller 260 proceeds to step S405. On the other hand, if it is determined that the speaking right mode is the maintenance mode, the controller 260 proceeds to step S407 to perform PTT communication according to the maintenance mode. The PTT communication method according to the maintenance mode will be described in detail below.

In step S405, the controller 260 performs a reception mode. In the reception mode, the controller 260 receives a voice signal of the other party of the PTT communication, and cannot transmit.

If the user inputs a preset key mapped with the sound effect while performing the reception mode, the controller 260 detects this in step S409 and requests the origination right from the PTT server 130 in step S411. That is, in the case where the talk right mode is the immediate return mode, when any one of the preset keys is pressed, the controller 260 detects this and requests the talk right from the PTT server 130. Here, the key requesting the right to speak refers to a case where the first key of the key combination is pressed when a key combination is set.

On the other hand, if the user presses the PTT key without inputting the preset key, the control unit 260 detects it in step S421 and proceeds to step S423. If the user does not press the preset key and does not press the PTT key, step S405. Return to perform the receive mode.

When the controller 260 of the portable terminal requests the right to speak in step S411, the PTT server 130 grants the occupation of the right to speak according to a predetermined algorithm. Then, the control unit 260 receives this in step S413 and transmits the sound effect mapped to the key or key combination pressed for the voice request in step S415 (step S409).

Meanwhile, in step S417, the controller 260 that detects the user's pressing of the PTT key performs PTT communication (outgoing mode) according to the pressing of the PTT key in step S419. The user may input a voice signal while pressing the PTT key, and the input voice signal is transmitted to the PTT communication counterpart. If the user releases the PTT key press during the PTT communication, the controller 260 detects this in step S421 and proceeds to step S423.

Following the transmission of the sound effect in step S415, the controller 260 requests the PTT server 130 to release the voice in step S423. Then, the PTT server 130 will recover the right to speak.

In step S425, the controller 260 detects whether the PTT communication is terminated, or terminates the PTT communication, or if not, proceeds to step S405.

In the immediate return mode, the PTT communication method acquires a right to speak when a preset key, i.e., a predetermined sound effect and a key mapped thereto is pressed, transmits the sound effect mapped to the key, and immediately returns the right to speak (request to release the voice). do. Therefore, the effect sound can be transmitted without the hassle of holding down the PTT key.

In the above, the case where the right to speak mode is the immediate return mode has been described. Hereinafter, a case in which the voice right mode is a maintenance mode will be described.

5 is a flowchart illustrating a PTT communication method of a mobile terminal according to another embodiment of the present invention.

Here, it is assumed that the talk right mode setting of the portable terminal is set to the maintenance mode.

Referring to FIG. 5, the controller 260 enters the PTT communication mode in step S501 through a call connection for PTT communication and a process of registering with the PTT server 130.

When entering the PTT communication mode, the control unit 260 checks the speaking mode setting in step S503. As a result of the check, if the talk right mode is the maintenance mode, the controller 260 proceeds to step S505. On the other hand, as a result of the check, if the talk right mode is the immediate return mode, the controller 260 proceeds to step S507 to perform PTT communication according to the immediate return mode. The immediate return mode has been described in the embodiment with reference to FIG. 4.

In step S505 the controller 260 performs a reception mode. In the reception mode, the control unit 260 receives a voice signal of the other party of the PTT communication, and cannot transmit.

If the user inputs a preset key mapped with the sound effect while performing the reception mode, the control unit 260 detects this in step S509, and requests the right to speak to the PTT server 130 in step S511.

That is, in the case where the speaking right mode is the maintenance mode, when any one of the preset keys is pressed, the controller 260 detects this and requests the speaking right from the PTT server 130. Here, the key requesting the right to speak refers to a case in which the last key of the key combination is pressed when the key combination is set.

On the other hand, if the user presses the PTT key without pressing a key set, the control unit 260 detects this in step S523, and proceeds to step S525. In addition, if the user does not press the PTT key, the controller 260 returns to step S505 to perform the reception mode.

When the mobile terminal requests the right to speak, the PTT server 130 grants possession of the right to speak according to a predetermined algorithm. Then, the control unit 260 receives this in step S517, and transmits the sound effect mapped to the key or key combination pressed in advance in step S519 (step S509) for the request to speak.

Unlike the immediate return mode, in the maintenance mode, the right to speak is not returned immediately after the sound effect is transmitted.

Thus, the right to speak remains. Therefore, the user may additionally input a preset key.

If the user inputs a predetermined key while the floor is maintained, the controller 260 detects this in step S517 and detects whether the key input in step S519 is a long key. Here, the long key refers to an input method of maintaining a predetermined time while pressing a key from the user's side. In addition, in the aspect of the mobile terminal, the long key means a key input signal that lasts for a predetermined time while the key is pressed. In contrast to a long key, a short key refers to an operation in which a user presses and releases a specific key. In the mobile terminal, a short key refers to an input signal in which a specific key is pressed and released.

If the detection result of step S519 is not a long key, that is, if the key is a short key, the controller 260 proceeds to step S515 and transmits an effect sound mapped with the input key. On the other hand, if the detection result of the long key in step S519, the control unit 260 transmits the effect sound mapped to the key input in step S521, and proceeds to step S529.

On the other hand, the control unit 260 detecting the PTT key in step S523 performs a PTT communication according to the PTT key in step S525. More specifically, it performs the dialing mode.

Here, the user may input a voice signal while pressing the PTT key, and the input voice signal is transmitted to the PTT communication counterpart. When the user releases the PTT key press during the PTT communication, the controller 260 detects this in step S527 and proceeds to step S529.

In step S529 the control unit 260 requests the PTT server 130 to release the voice. Then, the PTT server 130 will recover the right to speak.

Next, the control unit 260 returning the right to speak detects whether the PTT communication is terminated in step S531, terminates the PTT communication, or if not, proceeds to step S505.

In this maintenance mode, the PTT communication method obtains a right to speak when a preset key, that is, a key mapped with the set sound effect is detected, transmits the sound effect mapped to the key, and does not return the right to speak. And the sound effect can be continuously transmitted through the preset key. In addition, the return of the right to speak is made by pressing the long key. Therefore, it is possible to transmit the sound effect without the hassle of holding down the PTT key until the right to speak.

While the present invention has been described using some preferred embodiments, these embodiments are illustrative and not restrictive. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the invention and the scope of rights set out in the appended claims.

That is, in the above-described embodiment, the method for transmitting the effect sound in the PTT method has been illustrated and described, but the present invention is not limited thereto. For example, other types of media files such as an image or a text file may also be transmitted using a PTT communication method according to an embodiment of the present invention.

According to the method proposed by the present invention as described above, the sound effect can be transmitted simultaneously with the function of occupying or returning the right to speak through the key mapped with the sound effect. In addition, the effect sound can be transmitted without the hassle of holding down the PTT key. Therefore, there is an advantage of increasing the use of the mobile terminal.

Claims (13)

In the PTT communication method of the mobile terminal through the PTT server, Obtaining a right to speak in response to an input key signal among a plurality of keys in the PTT communication mode; Transmitting a sound effect mapped to the input key signal among a plurality of sound effects; And a process of maintaining or returning the talk right acquired according to the set talk right mode. The method according to claim 1, The held right to speak further includes the step of returning a long key signal is input, characterized in that the PTT communication method of the mobile terminal. delete delete delete delete delete The method according to claim 1, Obtaining the right to speak Detecting a key input signal of any one of the preset keys; Requesting a right to speak to the PTT server according to the key input signal; PTT communication method of a mobile terminal, characterized in that comprising the step of obtaining a speaking right from the PTT server. delete delete delete delete delete

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