KR20050077431A - System and method for providing push-to-talk communication service and communication terminal therefor - Google Patents

Abstract

The present invention relates to a PTT communication service providing system, and provides a system and method for providing a PTT communication service for transmitting and receiving packet data in real time between a calling terminal and a called terminal via a mobile communication network and a terminal for the same. It is.

When the PTT communication request signal transmitted from the mobile communication terminal is received through the mobile communication network, the present invention searches for the service subscription authentication and the called terminal information of the calling mobile communication terminal based on the PTT communication request signal, A SIP gateway which provides outgoing mobile communication terminal information and information of the destination terminal so that PTT communication between destination terminals can be performed; When receiving the information of the outgoing mobile communication terminal and the destination terminal transmitted from the SIP gateway, the PTT transmits a PTT communication acceptance request message to the called terminal with reference to the information of the called terminal and establishes a session between the calling mobile terminal and the called terminal; Including the session server, since the call unit is calculated based on the packet unit when calculating the call rate between the calling terminal and the called terminal, the burden on the call charge of the communication subscriber can be reduced.

Description

System and Method for Providing Push-to-Talk Communication Service and Communication Terminal Therefor}

The present invention relates to a PTT communication service providing system, and provides a system and method for providing a PTT communication service for transmitting and receiving packet data in real time between a calling terminal and a called terminal via a mobile communication network and a terminal for the same. It is.

With the development of mobile communication networks, the number of users possessing mobile communication terminals is increasing. As a result, mobile communication companies are studying various call rate standards to secure customers by providing services distinguished from other mobile communication companies.

Existing call rate is based on the call rate set by the subscriber in advance in the total call time from the call connection between the calling terminal and the called terminal to the end of the call connection (for example, designation number discount, night time). Discounts or regional discounts).

However, since the call rate is calculated based on the time from the call connection to the end of the call regardless of whether voice data is transmitted or received between the calling terminal and the called terminal, the caller and the called party are calculated. Even after the end of the call, the call termination is not performed due to the carelessness of the communication subscriber.

In addition to the mobile communication terminals which perform call connection between the called / originating terminals via the mobile communication network, each user who has a radio sets the same frequency band by setting a group such as 1: 1 or 1: multiple, Radios that perform communications are frequently used for wireless communications in certain areas.

However, since the radio has a limited area where communication can be performed, it is impossible to perform wireless communication with a remote user outside the communication range. In addition, the wireless communication often occurs when information is leaked because a predetermined communication frequency is known to other users other than a user designated as a group for communication.

The present invention has been made to solve the above-described problems, and a system and method for providing a PTT communication service for transmitting and receiving packet data in the form of packets between the calling terminal and the called terminal and calculating billing information based on the packet voice data; There is a technical problem in providing a terminal for this.

The present invention for achieving the above object is a voice PTT in the form of packet data between the originating terminal and the destination terminal when receiving a push-to-talk communication request signal transmitted from the mobile communication terminal connected to the mobile communication network and the Internet PTT communication service providing system for providing communication,

Upon receiving the PTT communication request signal transmitted from the mobile communication terminal via the mobile communication network, the service subscription authentication and the called terminal information of the calling mobile communication terminal are retrieved based on the PTT communication request signal, and the call origination is performed. A SIP gateway providing the outgoing mobile communication terminal information and the information of the called terminal so that PTT communication between a mobile communication terminal and the called terminal can be performed; And

Upon receiving the outgoing mobile communication terminal information and the information of the called terminal transmitted from the SIP gateway, the PTT communication acceptance request message is transmitted to the called terminal with reference to the information of the called terminal, and the called mobile communication terminal and the called party are received. And a PTT session server for establishing a session between terminals, and when the PTT session server receives a response to the PTT communication accept request message from the called terminal, thereafter, transmits and receives PTT data between the calling mobile terminal and the called terminal. To control.

Another embodiment of the present invention communicates with a mobile communication network, a memory for storing various data, a wireless communication unit for performing wireless communication, a display unit for indicating a current state of a mobile communication terminal or an event processing state requested by a user, and a voice call. A mobile communication terminal for providing a PTT communication service for transmitting a push-to-talk (PTT) signal to the mobile communication network to perform a PTT communication, including an output unit for providing audible data when using a service or a data service,

A separate PTT button for transmitting a PTT signal to the mobile communication network, the memory further stores information of a called terminal set as a called party to perform the PTT communication service,

If the PTT button is selected by the user includes a PTT communication service management unit for transmitting a PTT signal for attempting a PTT communication to the mobile communication network, and if the PTT button is selected by the user, the destination terminal information and the outgoing movement specified in advance The PTT signal including the communication terminal information is transmitted to the mobile communication network so that the PTT communication is performed.

According to another aspect of the present invention, when a push-to-talk communication request signal transmitted from a mobile communication terminal is connected to a mobile communication network and the Internet, voice PTT communication in the form of packet data between an originating mobile communication terminal and a destination mobile communication terminal is received. As a PTT communication service providing method for providing a,

After the mobile communication terminal designates the number of the destination mobile communication terminal to perform PTT communication by the user's selection, the mobile communication terminal transmits a PTT communication request signal including information on the originating / receiving mobile communication terminal to the mobile communication network. A first step of receiving the transmitted PTT communication request signal; The subscriber authentication of the mobile communication terminal is performed based on the PTT communication request signal received in the first step, and the information of the called mobile communication terminal is transmitted to a home location register in the mobile communication network. A second step of identifying a location; A third step of transmitting a PTT communication acceptance request message for establishing a session between an originating mobile communication terminal and a terminating mobile communication terminal with reference to the location of the called mobile communication terminal identified in the second step; A fourth step of transmitting a session establishment confirmation message to the calling mobile communication terminal after receiving the PTT communication acceptance confirmation response signal transmitted from the called mobile communication terminal; A fifth step of receiving PTT data transmitted from the originating mobile communication terminal; A sixth step of converting the PTT data so that the called mobile communication terminal can receive / confirm the PTT data, and storing the converted PTT data amount information; And a seventh step of transmitting the PTT data to the destination mobile communication terminal, and after the PTT communication between the originating mobile communication terminal and the destination terminal ends, based on the amount of PTT data stored in the sixth step. Generate billing information.

According to another aspect of the present invention, when receiving a push-to-talk communication request signal transmitted from a mobile communication terminal connected to a mobile communication network and the Internet, voice PTT communication in the form of packet data between the calling mobile communication terminal and the called wired terminal is performed. As a method of providing a PTT communication service,

After the mobile communication terminal designates the IP address of the destination wired terminal to perform PTT communication by the user's selection, the mobile communication terminal transmits a PTT communication request signal including information on the originating / receiving terminal to the mobile communication network. A first step of receiving the PTT communication request signal; A second step of performing subscriber authentication of the mobile communication terminal based on the PTT communication request signal received in the first step; A third step of transmitting a PTT communication acceptance request message for establishing a session between an outgoing mobile communication terminal and a destination wired terminal by referring to the IP address of the destination wired terminal to the destination wired terminal; A fourth step of transmitting a session establishment confirmation message to the calling mobile communication terminal after receiving the PTT communication acceptance confirmation response signal transmitted from the called wired terminal; A fifth step of receiving PTT data transmitted from the originating mobile communication terminal; A sixth step of converting the PTT data so that the called wired terminal can receive / confirm the PTT data, and storing the converted PTT data amount information; And a seventh step of transmitting the PTT data to the called wired terminal, and after the PTT communication between the originating mobile communication terminal and the called wired terminal ends, based on the amount of PTT data stored in the sixth step. Generate billing information.

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

1 is a view showing an embodiment of a method for providing a PTT communication service according to the present invention.

As shown in FIG. 1, a PTT communication request signal (including MIN information of an originating / receiving mobile communication terminal) transmitted by a calling mobile terminal A to perform PTT communication is transmitted through a mobile communication network and a SIP gateway. STT is sent to the PTT session server. After performing the subscriber authentication procedure, the PTT session server transmits a PTT communication acceptance request message to the destination mobile communication terminal B based on the MIN information of the destination mobile communication terminal B (S2). Thereafter, the PTT session server establishes a session upon receiving the PTT communication acceptance response message transmitted from the terminating mobile communication terminal B, and transmits and receives PTT data between the originating mobile communication terminal A and the terminating mobile communication B (S3).

If the called terminal is wired, the PTT session server receives the PTT communication request signal transmitted from the calling mobile terminal A (S1 ′) and refers to the IP address of the called wired terminal included in the PTT communication request signal. The message for setting is transmitted to the called wired terminal (S2 ′). Thereafter, the PTT session server establishes a session between the calling mobile communication terminal A and the called wired terminal according to the PTT communication confirmation response message sent from the called wired terminal, and transmits and receives PTT data.

2 is a diagram illustrating a connection relationship between a PTT communication service providing system and a communication network according to the present invention.

The push-to-talk communication service providing system includes a PTT communication request signal transmitted from the mobile communication terminal 100 via a mobile communication network 300, 320, 340, 360, 380, 400, 460, 480, 490. When receiving the request, based on this request / confirm the location of the destination terminal 200 to communicate with the mobile communication terminal 100, and attempts to connect the session to the destination terminal 200 to the calling mobile terminal 100 And communication between the called terminal 200 is performed. At this time, when the base station (BTS, 300) and the base station controller (BSC, 320) receives the PTT communication request signal transmitted from the mobile communication terminal 100, it is divided into a signal for performing the PTT communication to the SIP gateway 500 To send.

The mobile communication terminal 100 includes any one of a separate PTT button, a specific PTT shortcut key, or a PTT service menu for performing PTT communication, and when any one of these is selected, transmits a PTT communication request signal to a communication network. When the terminal to perform PTT communication is a wired terminal 700, the wired terminal is provided with a PTT client for PTT communication.

In more detail, when the SIP gateway 500 receives the PTT communication request signal transmitted by the mobile communication terminal 100 from the data core network (DCN) 400, the called terminal 200 based on the received PTT communication signal. Request / verify the location and transmit the retrieved location information of the called terminal 200 and the information of the calling mobile terminal 100 to the push-to-talk session server 600 to establish a session between the terminals. To be connected.

When the PTT session server 600 receives the originating mobile terminal 100 information and the called terminal 200 information extracted based on the PTT communication request signal transmitted from the SIP gateway 500, the called terminal 200 Send a message to the short message service center (SMSC) 360 so that a message (PTT communication acceptance request message) asking whether to perform PTT communication is transmitted. In this case, when the called terminal is wired, the PTT session server 600 transmits a PTT communication acceptance request message to the Internet 420 to be transmitted to the called terminal 700.

3 is a view showing in detail the configuration of a mobile communication terminal according to the present invention.

The mobile communication terminal 100 for the PTT communication service includes a control unit 110, an input unit 120, a memory 130, a wireless communication unit 140, a display unit 150, a PTT service management unit 160, and an output unit 170. It includes.

Input unit 120 for input control of the mobile communication terminal 100, memory 130 for storing various data, wireless communication unit 140 for performing wireless communication, the current state of the mobile communication terminal or requested by the user Since the display unit 150 for indicating the event processing state and the output unit 170 for providing audible data necessary for using a voice call service or data service are general configurations of the mobile communication terminal, detailed description thereof will be omitted. The mobile communication terminal 100 includes a separate PTT button for performing PTT communication, and when the PTT button is selected by a user, transmits a PTT communication request signal for a PTT communication attempt to the base station 300.

The mobile communication terminal 100 is a terminal for communicating with a mobile communication network such as a cellular phone, a PCS, or a PDA.

In more detail, the memory 130 stores information of the called terminal (eg, an address book or a telephone number list of the called terminal) set as a called party to perform a PTT communication service. The information of the called terminal stored in the memory 130 is referred to to designate the called party when the user wants to perform PTT communication.

The PTT service manager 160 transmits the information on the called terminal 200 and the calling mobile terminal 100 previously selected to the mobile communication network when the PTT button mounted on the outside of the mobile communication terminal 100 is selected by the user. Allow PTT communication.

4 is a view showing in detail the configuration of a wired terminal according to the present invention.

The wired terminal 700 is a terminal for transmitting and receiving a signal with a wired communication network, such as a personal computer, and in the detailed description of the present invention, only the configuration for the PTT communication service will be described.

When the wired terminal 700 receives the PTT communication acceptance request message and the PTT data transmitted from the PTT session server 600 and transmitted from the Internet 420, the PTT client 710 performs a PTT communication process based on the received information. ).

In more detail, when the PTT client 710 receives the PTT communication accept request message transmitted from the PTT session server 600, the PTT client 710 transmits a response to the Internet 420 to be transmitted to the PTT session server 600. And a session manager 712 and an information manager 714 for managing personal information of the wired terminal user and information related to PTT communication.

5 is a diagram showing in detail the configuration of a SIP gateway according to the present invention.

The SIP gateway 500 retrieves the location and information of the called terminal 200 based on the PTT communication request signal transmitted from the mobile communication network for the session connection between the calling mobile terminal 100 and the called terminal 200. Control unit 550 to control to provide, PTT signal recognition unit 510 for recognizing PTT communication request signal transmitted through the communication network, PTT session establishment request signal to the PTT session server 600 to connect the session for PTT communication It includes a session establishment request unit 530 and a database 570 for transmitting the.

In more detail, the database 570 stores terminal information (for example, a mobile communication terminal or a wired terminal, etc.) and subscriber destination information of a subscriber using a PTT communication service, and sets a session establishment request unit 530. ) Includes a PTT communication service subscriber information DB 571 that provides information corresponding to the subscriber authentication procedure of the calling mobile terminal 100 to perform PTT communication.

When the PTT signal recognition unit 510 receives the PTT communication request signal transmitted from the data core network 400 in the communication network, the PTT signal recognition unit 510 checks the service subscription authentication of the calling mobile communication terminal 100 and the called terminal 200. Sends a signal to the session establishment request unit 530 to search for the location of.

The session establishment request unit 530 retrieves / extracts information of the calling mobile terminal 100 from the PTT communication service subscriber information DB 571 based on the PTT communication request signal transmitted from the PTT signal recognition unit 510. Check whether you are a service subscriber.

In addition, the session establishment request unit 530 transmits the MIN information of the called terminal 200 to a home location register (not shown), inquires about the location of the called terminal 200, and then sends the MIN information of the called terminal 200 to the calling mobile terminal. By transmitting the information to the PTT session server 600 with the information of (100) to establish a session for PTT communication between the source / destination terminal.

In addition, the session establishment request unit 530 does not include the destination terminal information in the PTT communication request signal transmitted from the calling mobile terminal 100 and transmitted via the data core network 400 in the mobile communication network. In this case, the receiver designates the called terminal 200 previously designated as the PTT communication target.

6 is a view showing in detail the configuration of the PTT session server according to the present invention.

The PTT session server 600 is a control unit 660 for controlling the overall operation of the PTT session server 600 so that data transmission between terminals performing PTT communication can be performed, and terminals 100 and 200 performing PTT communication. Database 670 for storing the message example to be transmitted and the charging information according to the PTT communication, PTT signal transceiver 610, PTT signal transceiver 610 for receiving the PTT communication request signal transmitted from the SIP gateway 500 A session setting unit 620 for establishing a session between the originating and receiving terminals based on the received PTT information, a PTT data transmitting and receiving unit 630 for controlling data transmitted and received between the originating mobile communication terminal 100 and the destination terminal 200; Data conversion unit 640 for performing data conversion, such as PTT data transmission and reception from the PTT data transmission and reception unit 630 and the charging management unit 650 for calculating the charging information for PTT communication.

In more detail, the database 670 stores the data transmission amount for each PTT communication service subscriber transmitted from the message DB 671 storing the PTT communication acceptance request message example to be transmitted to the called terminal 200 and the PTT data transmission / reception unit 630. And a billing information DB 675 which stores billing information for each PTT communication service subscriber calculated by the billing management unit 652.

The PTT signal transmitting / receiving unit 610 is a PTT session establishment request message transmitted from the SIP gateway 500 (for example, the MIN number of the outgoing mobile communication terminal 100 and the MIN number of the called terminal 200 (IP when the wired terminal is IP). Address)), it is transmitted to the session establishment unit 620 so that a session connection between the originating mobile communication terminal 100 and the called terminal 200 is performed.

In addition, when the PTT signal transceiver 610 receives the PTT data transmitted from the data core network (DCN, 400), the PTT signal transceiver 610 transmits the PTT data to the PTT data transceiver 630 to make the destination mobile communication terminal 100 or the outgoing mobile communication terminal. To be transmitted to (200).

When the session establishment unit 620 receives the PTT session establishment request message from the PTT signal transceiver 610, the PTT communication acceptance request message is extracted from the message DB 671 and transmitted to the short message service center 360. To be sent to 200. For example, a PTT communication acceptance request message may be something like "A asks you to perform a PTT communication with the customer. Do you want to accept it? If you want to accept it, select the OK button." In this case, when the called terminal is a wired terminal, the session establishment unit 620 transmits a PTT communication acceptance request message to the called terminal 700 via the Internet 420.

When the session setting unit 620 receives the PTT communication acceptance response signal transmitted from the called terminal 200, the session setting unit 620 sets a session to allow PTT data transmission and reception between the calling mobile communication terminal 100 and the called terminal 200.

The PTT data transmission / reception unit 630 receives the PTT data transmitted from the PTT signal transmission / reception unit 610 after setting up a session between the calling mobile communication terminal 100 and the destination terminal 200, and sends it to the data conversion unit 640. Transmit to perform data conversion (eg, data conversion through encoding, decoding, or real-time data streaming).

The PTT data transceiver 630 transmits the converted data from the data converter 640 to the corresponding terminal (for example, the called terminal 200 or the originating mobile communication terminal 100). In this case, the PTT data transmission / reception unit 630 stores the data transmission / reception between the calling mobile communication terminal 100 and the called terminal 200 in the PTT data transmission amount information DB 673 so that it can be referred to later when calculating billing. .

The charging manager 650 calculates charging information based on the PTT data transmission amount for each PTT communication service subscriber stored in the PTT data transmission amount information DB 673. In this case, the standard for calculating the charge is a method of charging a fee based on a terminal transmitting PTT data regardless of an originating terminal, a method of charging a fee based on a terminal that first attempted a PTT communication service, or receiving PTT data. It is possible to apply variously depending on the operator such as a method of charging a fee based on the terminal.

7 is a flowchart illustrating an embodiment of a method for providing a PTT communication service according to the present invention. A case in which the called terminal is a mobile communication terminal will be described as an example.

The mobile communication terminal performing the PTT communication includes any one of a separate PTT button, a specific PTT shortcut key, or a PTT service menu to transmit the PTT communication request signal and data.

The calling mobile terminal 100 transmits a PTT communication request signal after designating a number of a called terminal to perform PTT communication according to a user's selection (S101). Here, the PTT communication request signal is transmitted to the communication network when any one of a separate PTT button, a specific PTT shortcut key, or a PTT service menu provided in the mobile communication terminal 100 is selected.

When the base station 300 receives the PTT communication request signal transmitted from the calling mobile terminal 100, the base station 300 transmits the PTT communication request signal to the SIP gateway 500 so that the PTT communication process may be performed (S103). At this time, the base station 300 distinguishes the PTT communication request signal from other signals as a signal for the PTT communication service, and transmits the PTT communication request signal to the SIP gateway 500.

The SIP gateway 500 performs subscriber authentication by searching for information of the caller (PTT communication service subscriber) based on the PTT communication request signal, and transmits MIN information of the called terminal 200 to the home location register. Inquire the position of the terminal 200 (S105). In this case, when the destination terminal information is not included in the PTT communication request signal transmitted from the calling mobile terminal 100, the SIP gateway 500 is previously stored by matching with the subscriber of the calling mobile terminal 100. It is also possible to arbitrarily designate the destination terminal information.

Thereafter, the SIP gateway 500 transmits the location of the called terminal 200 transmitted from the home location register and the calling mobile terminal 100 information to the PTT session server 600 to establish a session between the calling / called terminals. (S107).

When the PTT session server 600 receives the PTT session establishment request message transmitted from the SIP gateway 500, the PTT session server 600 refers to the location information of the called party terminal 200 included in the PTT session establishment request message. The PTT communication accept request message for session establishment is transmitted to the called-party mobile communication terminal 200 (S109). At this time, the PTT communication accept request message transmitted from the PTT session server 600 includes a call back URL address of the PTT session server 600, and moves to the called party via the short message service center 360. It is transmitted to the communication terminal 200.

Thereafter, the PTT session server 600 receives a response (accept) message to the PTT communication acceptance request message transmitted from the called terminal 200 (S111).

The PTT session server 600 transmits an acknowledgment message indicating that a session for performing PTT communication is established to the base station 300 (S113), and transmits it to the calling mobile terminal 100 (115).

Subsequently, the calling mobile terminal 100 transmits the voice PTT data in the form of a packet input by the user to the base station 300 (S117).

When the base station 300 receives the PTT data transmitted from the calling mobile terminal 100, it recognizes it as a PTT communication service signal and transmits the PTT data to the PTT session server 600 (S121). At this time, the PTT data transmitted from the base station 300 is transmitted to the PTT session server 600 via the base station controller 320 and other configurations in the communication network, and description of such intermediate waypoints will be omitted.

The PTT session server 600 performs a data conversion process so that the called party can check the PTT data transmitted from the base station 300 (S212), and transmits the converted PTT data to the called terminal 200. At this time, the PTT session server 600 stores the PTT data transmission amount transmitted / received between the calling mobile terminal 100 and the called terminal 200 in the database 670 and provides it for reference when calculating billing information.

Then, when the PTT communication between the calling mobile terminal 100 and the called terminal 200 is completed, the PTT session server 600 based on the amount of PTT data transmission stored in the database 670, the billing information for each subscriber Calculate and impose a PTT communication fee to the subscriber. In addition, the PTT session server 600 may be a method of calculating the billing information for the PTT data transmitted between the calling mobile terminal 100 and the called terminal 200 in real time.

In this case, the criteria for calculating the billing by the PTT session server 600 is a method of charging a fee based on a terminal transmitting PTT data regardless of an originating terminal, and a fee based on a terminal that first attempted a PTT communication service. It is possible to apply variously depending on the operator, such as a method or a method of charging a fee based on a terminal receiving PTT data.

8 is a flowchart illustrating another embodiment of a method for providing a PTT communication service according to the present invention. A case in which the called terminal is a wired terminal will be described as an example.

The wired terminal performing the PTT communication has a separate PTT client for transmitting the PTT communication request signal and data.

The calling mobile terminal 100 designates an IP address of a called terminal to perform PTT communication according to a user's selection, and then transmits a PTT communication request signal (S201). Here, the PTT communication request signal is transmitted to the communication network when any one of a separate PTT button, a specific PTT shortcut key, or a PTT service menu provided in the mobile communication terminal 100 is selected.

When the base station 300 receives the PTT communication request signal transmitted from the calling mobile terminal 100, the base station 300 transmits the PTT communication request signal to the SIP gateway 500 so that the PTT communication process may be performed (S203). At this time, the base station 300 recognizes the PTT communication request signal as another PTT communication service signal and transmits the PTT communication request signal to the SIP gateway 500.

The SIP gateway 500 searches for information on the caller (PTT communication service subscriber) based on the PTT communication request signal transmitted from the base station 300 and checks whether the user of the calling mobile terminal 100 is a subscriber (S205). ), The IP address of the called terminal 700 and the information of the calling mobile terminal 100 is transmitted to the PTT session server 600 to establish a session between the calling / called terminals (S207).

The PTT session server 600 extracts the IP address of the called terminal 700 from the PTT session establishment request message transmitted from the SIP gateway 500 and refers to the called terminal by referring to the extracted IP address of the called terminal 700. In step S209, a PTT communication acceptance request message is transmitted to establish a session between the called / calling terminal. The PTT communication accept request message includes a call back URL address of the PTT session server 600.

At this time, the destination terminal 700 is provided with a separate PTT client for the PTT communication service, when receiving the PTT communication acceptance request message transmitted from the PTT session server 600, the response message to the PTT session server 600 To send).

Thereafter, the PTT session server 600 receives a response (accept) message to the PTT communication acceptance request message transmitted from the called terminal 700 (S211).

The PTT session server 600 transmits an acknowledgment message indicating that a session for performing PTT communication is established to the base station 300 (S213), and transmits it to the calling mobile terminal 100 (215).

Subsequently, the calling-side mobile communication terminal 100 transmits voice PTT data in a packet form input by the user to the base station 300 (S217).

When the base station 300 receives the PTT data transmitted from the source mobile communication terminal 100, the base station 300 recognizes this as PTT communication and transmits it to the PTT session server 600 (S221). At this time, the PTT data transmitted from the base station 300 is transmitted to the PTT session server 600 via the base station controller 320 and other configurations in the communication network, and description of such intermediate waypoints will be omitted.

The PTT session server 600 performs a data conversion process so that the called party can check the PTT data transmitted from the base station 300 (S221), and transmits the converted PTT data to the called terminal 700. In this case, the PTT session server 600 stores the PTT data transmission amount transmitted and received between the calling mobile terminal 100 and the called terminal 700 in the database 670 and provides it for reference when calculating billing information. .

Then, when the PTT communication between the calling mobile terminal 100 and the called terminal 700 is finished, the PTT session server 600 based on the amount of PTT data transmission stored in the database 670, the billing information for each subscriber Calculate and impose a PTT communication fee to the subscriber. In addition, the PTT session server 600 may be a method of calculating the charging information for the PTT data transmitted between the calling mobile terminal 100 and the called terminal 700 in real time.

In this case, the criteria for calculating the billing by the PTT session server 600 is a method of charging a fee based on a terminal transmitting PTT data regardless of an originating terminal, and a fee based on a terminal that first attempted a PTT communication service. It is possible to apply variously depending on the operator, such as a method or a method of charging a fee based on the terminal receiving the PTT data.

In the detailed description of the present invention, the SIP gateway 500 has been described as an example of inquiring the called terminal location, but the PTT session server 600 transmits MIN information of the called terminal to the home location register to locate the called terminal. It is also possible to query.

In addition, in the present invention, the PTT session server 600 has been described as converting the PTT data, a method for directly converting the PTT data by the terminal performing the PTT communication is also possible.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, according to the present invention, a system and method for providing a PTT communication service and a terminal therefor can reduce the burden on the communication subscriber's call charge because it is based on the packet unit when calculating the call charge between the calling terminal and the called terminal. There is.

1 is a view showing an embodiment of a method for providing a PTT communication service according to the present invention;

2 is a view showing a connection relationship between a PTT communication service providing system and a communication network according to the present invention;

3 is a view showing in detail the configuration of a mobile communication terminal according to the present invention;

4 is a view showing in detail the configuration of a wired terminal according to the present invention;

5 is a view showing in detail the configuration of a SIP gateway according to the present invention;

6 is a view showing in detail the configuration of the PTT session server according to the present invention;

7 is a flowchart illustrating an embodiment of a method for providing a PTT communication service according to the present invention;

8 is a flowchart illustrating another embodiment of a method for providing a PTT communication service according to the present invention.

<Description of the symbols for the main parts of the drawings>

100, 200: mobile communication terminal 110, 550, 660: control unit

120: input unit 130: memory

140: wireless communication unit 150: display unit

160: PTT service management unit 170: output unit

300, 460: base station 320, 480: base station controller

340, 490: Exchange 360: Short Message Service Center

380: packet data service node 400: data core network

420: Internet 500: SIP Gateway

510: PTT signal recognition unit 530: session establishment request unit

570, 670: Database

571: PTT communication service subscriber information DB 600: PTT session server

610: PTT signal transceiver 620: session setting unit

630: PTT data transmission and reception unit 640: data conversion unit

650: billing management unit 671: message DB

673: PTT data transmission information DB 675: Billing information DB

700: wired terminal

Claims (17)

A PTT communication service providing system that provides voice PTT communication in the form of packet data between a calling terminal and a called terminal when receiving a push-to-talk communication request signal transmitted from a mobile communication terminal connected to a mobile communication network and the Internet. , Upon receiving the PTT communication request signal transmitted from the mobile communication terminal via the mobile communication network, the service subscription authentication and the called terminal information of the calling mobile communication terminal are retrieved based on the PTT communication request signal, and the call origination is performed. A SIP gateway providing the outgoing mobile communication terminal information and the information of the called terminal so that PTT communication between a mobile communication terminal and the called terminal can be performed; And Upon receiving the outgoing mobile communication terminal information and the information of the called terminal transmitted from the SIP gateway, the PTT communication acceptance request message is transmitted to the called terminal with reference to the information of the called terminal, and the called mobile communication terminal and the called party are received. PTT session server for establishing a session between the terminal; And the PTT session server receives a response to the PTT communication acceptance request message from the called terminal, and then controls to transmit and receive PTT data between the calling mobile terminal and the called terminal. Service delivery system. According to claim 1, When the called terminal is a mobile communication terminal, The SIP gateway transmits the location information of the called terminal to the PTT session server after requesting / confirming the location of the called terminal by transmitting the MIN number of the called terminal to a home location register in the mobile communication network. PTT communication service providing system. According to claim 1, The mobile communication terminal includes a memory for storing destination terminal information for transmitting PTT data, and transmits the PTT communication request signal including the originating mobile communication terminal information and the destination terminal information to the mobile communication network. PTT communication service providing system. The method of claim 3, wherein The called terminal information is any one of the MIN number of the mobile communication terminal or the IP address of the wired terminal, If the called terminal information is the MIN number of the mobile communication terminal, the PTT session server transmits a PTT communication acceptance request message to the short message service center in the mobile communication network to be transmitted to the called terminal, When the called terminal information is an IP address of a wired terminal, the PTT session server performs a communication with the Internet to transmit a PTT communication acceptance request message to the called terminal. According to claim 1, When the mobile communication terminal transmits only the outgoing mobile communication terminal information to the mobile communication network in the PTT communication request signal, The SIP gateway designates the called terminal pre-set by the subscriber as a PTT communication counterpart, and transmits the same to the PTT session server along with the outgoing mobile communication terminal information. The method of claim 5, The called terminal information is any one of the MIN number of the mobile communication terminal or the IP address of the wired terminal, If the called terminal information is the MIN number of the mobile communication terminal, the PTT session server transmits a PTT communication acceptance request message to the short message service center in the mobile communication network to be transmitted to the called terminal, When the called terminal information is an IP address of a wired terminal, the PTT session server performs a communication with the Internet to transmit a PTT communication acceptance request message to the called terminal. According to claim 1, When the called terminal is a wired terminal, the called terminal is provided with a separate PTT client for performing the PTT communication, And receiving the PTT communication acceptance request message transmitted from the PTT session server, transmitting a response to the PTT communication acceptance request message to the PTT session server. According to claim 1, The PTT communication accept request message includes a call back URL address of the PTT session server. A memory for storing various data, a wireless communication unit for performing wireless communication, a display unit for indicating a current state of a mobile communication terminal or an event processing state requested by a user, and a voice call service or data service for communicating with a mobile communication network. A mobile communication terminal for providing a PTT communication service for transmitting a push-to-talk (PTT) signal to the mobile communication network for performing PTT communication, including an output unit for providing audible data necessary for use, A separate PTT button for transmitting a PTT signal to the mobile communication network, the memory further stores information of a called terminal set as a called party to perform the PTT communication service, A PTT communication service manager for transmitting a PTT signal for attempting PTT communication to the mobile communication network when the PTT button is selected by a user; If the PTT button is selected by the user, PTT communication comprising a predetermined PTT signal including the destination terminal information and the outgoing mobile communication terminal information to the mobile communication network to perform a PTT communication Mobile communication terminal for providing a service. The method of claim 9, The mobile communication terminal further includes any one of a PTT shortcut key or a PTT service menu for the PTT communication, and when any one of the PTT shortcut key or the PTT service menu is selected, the PTT signal is transmitted to the mobile communication network. Mobile communication terminal for providing a PTT communication service. PTT communication that provides voice PTT communication in the form of packet data between an originating mobile communication terminal and a destination mobile communication terminal when receiving a push-to-talk communication request signal transmitted from a mobile communication terminal connected to a mobile communication network and the Internet. As a service providing method, After the mobile communication terminal designates the number of the destination mobile communication terminal to perform PTT communication by the user's selection, the mobile communication terminal transmits a PTT communication request signal including information on the originating / receiving mobile communication terminal to the mobile communication network. A first step of receiving the transmitted PTT communication request signal; The subscriber authentication of the mobile communication terminal is performed based on the PTT communication request signal received in the first step, and the information of the called mobile communication terminal is transmitted to a home location register in the mobile communication network. A second step of identifying a location; A third step of transmitting a PTT communication acceptance request message for establishing a session between an originating mobile communication terminal and a terminating mobile communication terminal with reference to the location of the called mobile communication terminal identified in the second step; A fourth step of transmitting a session establishment confirmation message to the calling mobile communication terminal after receiving the PTT communication acceptance confirmation response signal transmitted from the called mobile communication terminal; A fifth step of receiving PTT data transmitted from the originating mobile communication terminal; A sixth step of converting the PTT data so that the called mobile communication terminal can receive / confirm the PTT data, and storing the converted PTT data amount information; And A seventh step of transmitting the PTT data to the called mobile communication terminal; And after the PTT communication between the originating mobile communication terminal and the called terminal is terminated, generating charging information based on the amount of PTT data stored in the sixth step. The method of claim 11, wherein The mobile communication terminal includes any one of a separate PTT button, a PTT hotkey or a PTT service menu for the PTT communication, and when any one of the separate PTT button, PTT hotkey or PTT service menu is selected, the mobile communication network PTT communication service providing method characterized in that for transmitting the PTT communication request signal. The method of claim 11, wherein The user of the mobile communication terminal pre-stores at least one or more incoming mobile communication terminal number for performing the PTT communication, If the called mobile communication terminal number is not designated by the calling mobile communication terminal in the first step, The second step further includes the step of arbitrarily designating a number of the called mobile communication terminal that is stored matched with the called mobile communication terminal. PTT communication service that provides voice PTT communication in the form of packet data between an originating mobile communication terminal and a called wired terminal when receiving a push-to-talk communication request signal transmitted from a mobile communication terminal connected to a mobile communication network and the Internet. As a provision method, After the mobile communication terminal designates the IP address of the destination wired terminal to perform PTT communication by the user's selection, the mobile communication terminal transmits a PTT communication request signal including information on the originating / receiving terminal to the mobile communication network. A first step of receiving the PTT communication request signal; A second step of performing subscriber authentication of the mobile communication terminal based on the PTT communication request signal received in the first step; A third step of transmitting a PTT communication acceptance request message for establishing a session between an outgoing mobile communication terminal and a destination wired terminal by referring to the IP address of the destination wired terminal to the destination wired terminal; A fourth step of transmitting a session establishment confirmation message to the calling mobile communication terminal after receiving the PTT communication acceptance confirmation response signal transmitted from the called wired terminal; A fifth step of receiving PTT data transmitted from the originating mobile communication terminal; A sixth step of converting the PTT data so that the called wired terminal can receive / confirm the PTT data, and storing the converted PTT data amount information; And A seventh step of transmitting the PTT data to the called wired terminal; And after the PTT communication between the originating mobile communication terminal and the called wired terminal is terminated, generating charging information based on the amount of the PTT data stored in the sixth step. . The method of claim 14, The mobile communication terminal includes any one of a separate PTT button, a PTT hotkey or a PTT service menu for the PTT communication, and when any one of the separate PTT button, PTT hotkey or PTT service menu is selected, the mobile communication network PTT communication service providing method characterized in that for transmitting the PTT communication request signal. The method of claim 14, The user of the mobile communication terminal pre-stores at least one IP address of the at least one destination wired terminal for performing the PTT communication, If the IP address of the called wired terminal is not designated by the calling mobile terminal in the first step, The second step further includes the step of arbitrarily designating an IP address of the called wired terminal that is stored in match with the called mobile communication terminal. The method of claim 14, The called wired terminal is provided with a PTT client for the PTT communication, After the third step and before the fourth step, And the PTT client of the called wired terminal transmits a response to the PTT communication acceptance request message.