KR102054903B1 - Service apparatus and method for call service in wiress data network - Google Patents

Abstract

The present invention relates to a support system, a service device, and a method for a wireless data communication network-based call service, wherein the service device checks whether or not an update message is periodically transmitted from a terminal device, and fails to receive the update message for a preset time. In one case, the terminal ends the call to the terminal device, and includes information on the call connection time of the terminal device terminated by the call and information on the cause of call termination indicating that the call is terminated by not receiving an update message for a preset time. By generating the billing information and transmitting to the billing device, the billing device can perform billing in consideration of the unreceived packet time due to network disconnection or battery separation before the call ends.

Description

SERVICE APPARATUS AND METHOD FOR CALL SERVICE IN WIRESS DATA NETWORK}

The present invention relates to a call service based on a wireless data communication network. In particular, in providing a call service based on a wireless data communication network, charging errors at abnormal termination due to network disconnection or battery disconnection of a terminal device can be minimized. A support system, a service apparatus, and a method for a wireless data communication network-based call service are provided.

The contents described in this section merely provide background information on the present embodiment and do not constitute a prior art.

As wireless data communication technology evolves, users want to perform communication with better communication quality and speed. In recent years, high-speed wireless data communication (LTE) technology has been developed to enable high-speed communication, and this high-speed wireless data communication technology can communicate 12 times faster than 3rd generation mobile HSDPA. In addition, the download speed is up to 173Mbps, and it communicates fast enough to download a 700MB movie in 1 minute. In addition, all services that can be enjoyed in the online environment such as high-definition video and network games can be conveniently used on the go. Therefore, it is attracting attention as the next generation mobile communication method that will meet the explosive data demand along with the smartphone craze.

On the other hand, although data and video call service through the LTE network is made, voice calls do not use the LTE network, and in this regard, a high-speed wireless data network based voice call system (VoLTE) to service voice calls from the LTE network in recent years. This is the trend that is being developed.

The VoLTE system provides not only data but also voice signals through the data network, and both callers and receivers can make clearer and clearer calls with HD-quality sound when calling through VoLTE. In addition, since VoLTE services voice and data through the same LTE network, it is possible to provide various services combining voice, video and data services. For example, during a voice call, you can exchange photos or share files with the other party.

When the voice or video call ends in such a VoLTE system, the call is charged. Since the voice or video call signal is transmitted in a Real-Time Transport Protocol (RTP) packet, a service device (TAS) generating billing information Do not go through. Therefore, the service device should calculate the charging information using only the SIP message.

However, in the wireless data network, packet loss may occur due to various causes, and in the past, since the billing process is performed without considering the billing error caused by the packet loss, more communication charges are added than the actual call. Therefore, a method for minimizing the error of time charging is needed.

The present invention is proposed to solve the conventional inconvenience, and in providing a call service based on a wireless data communication network, wireless for minimizing the error of the call charge when abnormal termination due to network disconnection or battery disconnection of the terminal device The present invention provides a support system, a service device, and a method for a data communication network-based call service.

In particular, the present invention is proposed to solve the conventional inconvenience, taking into account the communication disconnection period until the end of the call at the end of the call due to the non-receipt of the update message periodically transmitted from the terminal device to which the call is connected The present invention provides a support system, a service device, and a method for a wireless data communication network-based call service that calculate a real call time and add a communication fee based thereon.

A support system for a wireless data communication network based call service according to an embodiment of the present invention for achieving the above object, confirms whether or not to receive an update message periodically transmitted from a terminal device to which a call is connected through a wireless data communication network. When the update message is not received for a preset time, the call is terminated by the corresponding terminal device, and the information about the call connection time of the terminal device and the update message for the preset time are not received. A service device for generating charging information including information on a cause of termination of the indicated call and transmitting the generated charging information to the charging device; And a charging device configured to calculate the actual talk time of the terminal device in consideration of the cause of termination of the call and to perform the billing process according to the calculated actual talk time when receiving the billing information from the service device.

The charging device according to the present invention, when the cause of termination of the call is not received an update message for a preset time, actually deducts the preset time from the total call connection time identified from the information on the call connection time. You can calculate the talk time.

In addition, a service apparatus for a call service based on a wireless data communication network according to an embodiment of the present invention includes: a communication unit configured to transmit and receive a control message for call processing of terminal devices connected through a wireless data communication network; And checking whether or not to receive the update message periodically transmitted from the terminal device to which the call is connected through the wireless data communication network, and when the update message is not received for a preset time, terminates the call to the terminal device. And a controller configured to generate charging information including information on a call connection time of the terminal device and information on a cause of termination of a call indicating that the call is ended by not receiving an update message for a preset time and transmitting the generated charge information to the charging device. It is characterized by.

The control unit of the service apparatus for the wireless data communication network based call service performs a call termination on the terminal apparatus by transmitting a call termination message for the terminal apparatus to an exchange apparatus of the wireless data communication network to which the terminal apparatus is connected. It is characterized by.

The controller of the service apparatus for the wireless data communication network-based call service checks whether or not to receive an update message periodically transmitted from a terminal device to which a call is connected through the wireless data communication network, and has not received the update message for a preset time. A charging end confirmation unit configured to perform call termination for the terminal device and extract information on a call connection time of the terminal device; And when the call termination of the terminal device is performed, obtains information on a call connection time of the terminal device and information on a cause of call termination from the charge end confirming unit, and generates charging information for generating the charge information including the information. It may include wealth.

Here, the predetermined time may be set as a multiple of the transmission period of the update message, the information on the call connection time is the start time and end time of the call connection of the terminal device, or the call connection of the terminal device The total call connection time may correspond to the elapsed time from the start time to the end of the call.

In addition, the method for a wireless data communication network-based call service according to an embodiment of the present invention, comprising: checking whether or not to receive an update message periodically transmitted from a terminal device to which a call is connected through the wireless data communication network; Performing a call termination of the terminal device when the update message has not been received for a preset time; Generating charging information including information on a call connection time of the terminal device, which is terminated by the call, and information on a call termination cause indicating that the call is terminated by not receiving an update message during the preset time; And transmitting the generated charging information to a charging device.

According to the present invention, when an abnormal termination occurs due to network disconnection or battery disconnection while providing a call service based on a wireless data communication network, an actual call except for a silence occurrence section in which an actual call cannot be made before the call is terminated. By calculating the time, there is an excellent effect of improving the user's satisfaction while preventing the excessive addition of the communication fee.

Particularly, the present invention checks whether or not to receive an update message periodically transmitted from a terminal device connected through a wireless data communication network, and when a call termination occurs by not receiving an update message for a preset time, except for the preset time. By calculating the actual talk time, it is possible to compensate for the time difference between the actual talk end time and the time of detecting abnormal termination situation. As a result, there is an effect of preventing excessive addition of communication charges.

1 is a diagram illustrating a configuration of a support system for a wireless data communication network based call service according to an exemplary embodiment of the present invention.
2 is a diagram illustrating a configuration of a terminal device using a call service based on a wireless data communication network according to an exemplary embodiment of the present invention.
3 is a diagram illustrating a configuration of a service apparatus for a call service based on a wireless data communication network according to an exemplary embodiment of the present invention.
4 is a flowchart illustrating a method for a call service based on a wireless data communication network according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description and the accompanying drawings, detailed descriptions of well-known functions or configurations that may obscure the subject matter of the present invention will be omitted. In addition, it should be noted that like elements are denoted by like reference numerals as much as possible throughout the drawings.

The terms or words used in the present specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, and the inventors are appropriate as concepts of terms for explaining their own invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various modifications that can be substituted for them at the time of the present application It should be understood that there may be equivalents and variations.

First, a support system for a call service based on a wireless data communication network according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a configuration of a support system for a call service based on a wireless data communication network according to an embodiment of the present invention.

Referring to FIG. 1, a support system for a wireless data communication network-based call service according to the present invention manages call connection to a plurality of terminal devices 100 connected through a communication network 10, and charges according to the call connection. A service device 300 for generating charging information for processing, and a charging device 400 for performing charging processing on the terminal device 100 based on the charging information generated from the service device 300. Can be.

Here, the communication network 10 supports wireless access to the terminal devices 100, performs a call connection for a voice or video call in response to a request of the connected terminal device 100, and connects two terminal devices connected to the call. Packet-based call data is transmitted between 100 to support voice or video call. The communication network 10 may be, for example, a packet-based mobile communication network including an LTE network.

Such a communication network 10 may include connection devices 11 and 12 and a switching device 13, and may further include a plurality of communication devices, but is directly related to the description of a call service according to the present invention. A description of the missing configuration is omitted.

Here, the access devices 11 and 12 serve as a base station or an access point that performs a wireless data transmission / reception function with the terminal device 100, and include, for example, a base station (BS), a base transceiver station (BTS), A plurality of base stations such as NodeB, eNodeB, and the like, and a wireless access pointer of a Wi-Fi network may be included. The access devices 11 and 12 are distributed in different areas to support the establishment of a wireless communication channel for using a communication service of the terminal device 100 located in communication coverage. The connection devices 11 and 12 transmit a call connection request message from the terminal device 100 to the switching device 13 and transmit a response to the call connection request transmitted from the other party through the switching device 13. The device 100 transmits the call data to the terminal device 100 after the call connection. Here, the call data for the voice or video call is transmitted in a Real-time Transport Protocol (RTP) packet.

Switching device 13 is a configuration that manages the session management and routing functions in the communication network 10, for example, the switching device 13 may be a Call Session Control Function (CSCF) of the IMS standard. The switching device 13 performs a call control function between the terminal devices 100 and transfers call data for voice and voice or video calls between the terminal devices 100 to which the call is connected. In performing such session management and routing functions, the switching device 13 interworks with a service device 300 that supports a wireless communication network based call service according to the present invention.

Specifically, when the exchange device 13 receives a call connection request message (for example, an INVITE message of SIP) from any one of the plurality of terminal devices 100, the switch device 13 receives the call connection request message. When a call termination message (BYE message of SIP) is received from the terminal apparatus 100 connected to the call through the service apparatus 300, and the call termination message is transmitted to the called party, the billing processing is performed by transmitting the call termination message to the service apparatus 300. Make it happen.

The terminal device 100, which is connected to the communication network 10 and uses a call service, may use a terminal capable of transmitting / receiving packets for various data, voice, or video via the communication network 10 according to a user's key manipulation. it means.

In addition, the terminal device 100 includes a browser for supporting processing of a service provided based on the communication network 10, a memory for storing programs and protocols, a microprocessor for executing and controlling various programs, and the like. Means a terminal. That is, the terminal device 100 may be any terminal as long as it can execute a call service based on a wireless data communication network, and is a broad concept including all communication computing devices such as a notebook computer, a mobile communication terminal, and a PDA. Meanwhile, the terminal device 100 may be manufactured in a form having a touch screen, but is not necessarily limited thereto.

The terminal device 100 may receive a call service by accessing the communication network 10, and may download a related application for the call service and use the call service.

Specifically, the terminal device 100 transmits and receives a control message for call connection, such as a call connection request message and a response message to the call connection request, according to a user's request. Send and receive call data for voice or video calls with the device. In this case, the call data is transmitted through the RTP-based packet data, and the call data is transmitted through the access devices 11 and 12 and the exchange device 13 without passing through the service device 100. The call connection request message may be an INVITE message of SIP.

In addition, the terminal device 100 transmits an update message to the communication network 10 at predetermined intervals while the call is connected, and the update message is connected to the communication devices 11 and 12 and the exchange device ( 13) to the service device 300. The service device 300 may know that the terminal device 100 is normally connected by receiving the update message. The update message may be an UPDATE message of SIP.

In addition, the terminal device 100 transmits a call termination message according to a user request or a predetermined criterion after the call is connected. Here, the call termination message may be a BYE message of SIP.

The call termination message of the terminal device 100 thus transmitted is transmitted to the service device 300 through the connection devices 11 and 12 and the exchange device 13 of the communication network 10.

The service device 300 is a device for supporting a call service based on a wireless data communication network, and additional service operation according to the subscription of the terminal device 100, generation of billing information according to the call connection and termination of the terminal device 100, and Perform subscriber information management. The service device 300 may be an AS (Application Server) of the IMS network.

The service device 300 may manage the call connection state of the terminal device 100 through a control message including the above-described call connection request message, response message, call termination message, and the like.

In detail, when the service device 300 receives the call connection message and the call termination message of the terminal device 100 through the exchange device 13, the service device 300 manages the call connection start time and the call connection call end time accordingly. On the basis of this, information about a call connection time for billing processing according to a call connection of the terminal device 100 is extracted. The information on the call connection time may include a call start time and a call end time, or may include a total call connection time from the call start time to the call end time. Here, the call start time refers to a time at which the session connection is started, and the call end time refers to a time at which call termination is performed by receiving a call termination message.

However, when an abnormal termination situation such as network disconnection or battery disconnection occurs, the service device 300 may not normally receive the above-described control message, in particular, the call termination message, and may not monitor the RTP packet of the call data. The abnormal end situation described above cannot be recognized.

To this end, the service device 300 according to the present invention recognizes an abnormal end situation such as network disconnection or battery disconnection by using an update message periodically transmitted from the terminal device 100 to which a call is connected, and performs call termination processing. can do.

In detail, the service device 300 checks whether or not an update message is periodically transmitted while the call is connected from the terminal device 100, and preset time (for example, twice the transmission period of the update message). If the update message is not received, the terminal terminates the call to the terminal device 100 by recognizing it as an abnormal termination situation in which a normal call cannot be made due to network disconnection or battery disconnection. That is, the service device 300 transmits a call termination message for the terminal device 100 to the communication network 10, specifically, the switching device 13 of the communication network 10. To this end, the service device 300 may include a timer for counting the preset time, and upon receipt of the update message, initialize the timer to count the elapsed time from the reception of the update message. have. When the timer expires, an event for the abnormal end situation is generated to terminate the call to the terminal device 100.

In addition, the service device 300 generates charging information for the terminated call and transmits the charging information to the charging device 400 so that charging for the terminated terminal device 100 can be made. In this case, the charging information includes information on the call connection time of the terminal device 100 for the terminated call and information on the cause of termination of the call. Here, the information on the call connection time may be a call connection start time and a call end time of the terminal device 100 or a total call corresponding to an elapsed time from the call connection start time of the terminal device 100 to the end of the call. It may be a connection time, and the information on the cause of termination of the call includes information indicating the non-receipt of the update message for the preset time.

Next, the billing device 400 is a device that performs billing processing according to the use of a call service for each terminal device 100, and includes billing information transmitted from the service device 300 and subscriber information of the terminal device 100. As a reference, the billing process is performed according to the use of the call service and the additional service for a certain period.

Specifically, the charging device 400 calculates the actual talk time by using the charging information received from the service device 300, and calculates the call charge by accumulating the actual talk time for a predetermined period. In this case, the charging device 400 checks information on the cause of termination of the call included in the charging information transmitted from the service device, and calculates the actual talk time of the terminal device 100 based on the information. Specifically, if the cause of termination of the call is not received an update message for a preset time, the charging device 400 subtracts the preset time from the total call connection time extracted from the information on the call connection time of the accounting information. The time is calculated as actual talk time, and billing processing is performed based on this. Here, the predetermined time may be set as a multiple of the transmission period of the update message.

As described above, the charging device 400 performs charging for the terminal device 100 that is abnormally terminated due to battery disconnection, network disconnection, etc. of the terminal device 100. The call fee may be added except for a time when the service fails to receive the message, that is, the service device 300 confirms whether the update message is received, thereby further increasing the user's satisfaction and reliability.

The configuration of the terminal device 100 for the call service based on the wireless data communication network configured as described above will be described in detail with reference to FIG. 2.

The terminal device 100 may include a control unit 110, an input unit 120, a communication unit 130, a storage unit 140, and an output unit 150.

The controller 110 controls the overall operation of the terminal device 100 and operations related to the call service, and executes the call service based on the communication network 10 according to a user's request.

Specifically, the controller 110 transmits a call connection request message (INVITE message of SIP) for a specific terminal device according to a call connection request of the user to the communication network 10 and according to a call processing procedure, of the specific terminal device. When receiving a call connection acceptance message (for example, 200 OK of SIP), a response message (ACK of SIP) is transmitted, and then call data is transmitted and received through the connected session. That is, the voice signal of the user is converted into call data and transmitted, and the received call data is converted into the voice signal of the other party and controlled to be output through a speaker.

In addition, the controller 110 periodically transmits an update message to the communication network 10 while the call is connected, and the update message transmits the connection devices 11 and 12 and the exchange device 13 of the communication network 10 to each other. It is transmitted to the service device 300 through. Here, the update message may be an UPDATE message of SIP.

The input unit 120 may generate a user input signal corresponding to a user's request or information according to a user's operation, and may be implemented by various input means that are currently commercialized or may be commercialized in the future. For example, the input unit 120 ) May include not only a general input device such as a keyboard, a mouse, a joystick, a touch screen, a touch pad, but also a gesture input means for detecting a user's motion and generating a specific input signal. The input unit 120 may be used to input a request of a user related to a call service, for example, a call connection request and information on a counterpart terminal.

The communication unit 130 is a component for performing communication through the communication network 10 and transmits and receives a control message and call data for a call service. In addition, the communication unit 130 may transmit and receive data using one or more communication methods, and for this purpose, the communication unit 130 may include a plurality of communication modules that transmit and receive data according to different communication methods. In particular, the communication unit 130 transmits an update message at regular intervals connected to a call under the control of the control unit 110.

The storage unit 140 stores information necessary for the operation of the terminal device 100 and information for a call service, and in particular, a packet (RTP packet) and control information (for example, voice / video / data) to be transmitted / received. , The transmission cycle information of the update message) can be stored. The storage unit 140 may include an optical recording medium such as a magnetic media such as a hard disk, a floppy disk, and a magnetic tape, a compact disk read only memory (CD-ROM), and a digital video disk (DVD). And magneto-optical media such as floppy disks and ROM, random access memory (RAM), and flash memory.

The output unit 150 is a means for providing a user's recognition of the operation result or state of the terminal device 100. For example, the output unit 150 includes a display unit for visually outputting through a screen or a speaker for outputting an audible sound. can do. In particular, according to the present invention, a screen related to a wireless data communication network-based call service driven by the terminal device 100 may be displayed.

Next, a configuration of the service device 300 for a wireless data communication network based call service according to an embodiment of the present invention will be described in detail with reference to the accompanying FIG. 3.

The service device 300 may include a control unit 310, a communication unit 320, and a storage unit 330.

The controller 310 may control overall operations of the service device 300 and operations for call service, and may control communication with the exchange device 13 and the charging device 400. Basically, the control unit 310 receives a message for a call connection and a call termination of the terminal device 100, in particular, a call connection request message and a call termination message, through the switching device 13, and according to the received message Control function and billing information generation. In addition, the control unit 310 according to the present invention confirms whether or not to receive the update message periodically transmitted from the terminal device 100 via the switching device (13). In addition, when an update message for a preset time is not received, the controller 310 recognizes that the terminal device 100 is in an abnormal end situation in which it cannot normally make a call, and informs the terminal device 100. Terminates the call, and includes advertisement information including information on a call connection time of the terminal device 100 in which the call is ended, and information on a cause of call termination indicating that the call is terminated by not receiving an update message for the preset time. It generates and transmits to the charging device 400 through the communication unit 320.

To this end, the controller 310 may use a timer that counts the elapse of the predetermined time. That is, the controller 310 initializes the timer whenever receiving the update message of the terminal device 100. Therefore, when the update message is not continuously received, it expires after the preset time elapses, and the controller 310 recognizing this generates an event for an abnormal termination situation for the terminal device 100, One call can be terminated and generation of billing information can be performed. Here, the period of the timer, that is, the predetermined time may be set as a multiple of the transmission period of the update message, for example, may be a time until receiving the update message twice. Therefore, when the update message is not received twice, the controller 310 terminates the call of the terminal device 100, generates a call termination message (BYE message), and exchanges the generated call termination message with the exchange device 13. ) Can be sent.

To this end, the control unit 310 may be configured to include a charging end confirmation unit 311 and the charging information generation unit 312.

The charging end confirmation unit 311 confirms whether or not to receive an update message periodically transmitted from the terminal device 100. If the update message is not received during the preset time through the confirmation, for example, when the update message is not received twice, the call call of the terminal device 100 is terminated and the terminal device 100 A call termination message is generated to control the transfer of the generated call termination message to the switching device 13.

The billing information generation unit 312 extracts information on a call termination cause and call connection time for the terminated call through the billing termination check unit 311, and extracts information on the call connection time and a call termination cause. Generates billing information including information about the account. The charging information generated here is transmitted to the charging device 400. The information about the cause of termination of call included in the charging information is information indicating that the call is terminated due to the non-receipt of the update message for a preset time.

The communication unit 320 transmits and receives a control message for a call service of the terminal device 100 through the communication network 10. Such a control message may include a control message of the SIP standard. The communication unit 320 may transmit and receive data through various communication methods as well as wired and wireless methods. In addition, the communication unit 320 may transmit and receive data using one or more communication methods, and for this purpose, the communication unit 320 may include a plurality of communication modules that transmit and receive data according to different communication methods. In particular, the communication unit 320 may receive an update message of the terminal device 100 through the switching device 130, and may transmit a call termination message generated by the control unit 310 to the switching device 13. In addition, the communication unit 320 may transmit the charging information generated by the control unit 310 to the charging device 400.

The storage unit 330 stores information related to providing a call service in the service device 300. For example, the storage unit 330 may store information necessary for generating a call termination message, billing information generated according to abnormal call termination, information on a call connection time of the terminated call, and the like. The storage unit 330 may include an optical media such as a magnetic media such as a hard disk, a floppy disk, and a magnetic tape, a compact disk read only memory (CD-ROM), and a digital video disk (DVD). And magneto-optical media such as floppy disks and ROM, random access memory (RAM), and flash memory.

Next, a method for a call service based on a wireless data communication network for minimizing a charging error made based on the system configured as described above will be described in detail with reference to the accompanying drawings.

4 is a flowchart illustrating a method for a wireless data communication network based call service according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the terminal device 100 to which a call is connected through the communication network 10 transmits and receives call data to and from the counterpart terminal device through the communication network 10.

In step 1101, the wireless communication network based call service method according to the present invention transmits an update message to the communication network 10 at predetermined intervals while the call is connected (1101). Here, the update message may be an UPDATE message of SIP. The SIP UPDATE message is simply used to confirm the session connection state, and is transmitted to the switching device 13 through the connection devices 11 and 12 of the communication network 10, and the switching device 13 updates the update. The message is transmitted to the service device 300.

In operation 1102, the service device 300 confirms whether an update message is periodically transmitted from the call-connected terminal device 100. In more detail, the service device 300 checks whether an update message has not been received for a preset time. The preset time may be set as a multiple of the transmission period of the update message. To this end, the service device 300 includes a timer that counts the elapsed time of the preset time, and initializes the timer every time the update message is received, and thus the timer elapses from the reception of the update message. Will be counted. Therefore, when the service device 300 does not receive the update message for the preset time, the timer expires.

Accordingly, in operation 1103, the service device 300 checks whether the timer for confirming the non-receipt of the update message for a predetermined time expires, and when the timer expires, when the timer expires, the service message is updated for a preset time. Since it is not received, the terminal device 100 recognizes that the abnormal termination is necessary due to network disconnection or battery disconnection, and thus terminates the call of the terminal device 100.

Accordingly, the service device 300 transmits a call termination message for the terminal device 100 to the switching device 13 to which the terminal device 100 is connected in step 1104.

In operation 1105, the service device 300 includes information on a call connection time of the terminal device 100 in which the call is terminated and information on a cause of termination of a call indicating that the call is terminated due to not receiving an update message for a preset time. Extract and generate charging information including the same.

In addition, the service device 300 transmits the charging information message including the charging information and the terminal identifier generated in step 1106 to the charging device 400.

Accordingly, in step 1107, the charging device 400 calculates the actual billing time using the received billing information, and calculates and adds a call charge based on the calculated actual billing time. Specifically, when the cause of termination of the call is not received an update message for a preset time, the charging device 400 actually subtracts the preset time from the total call connection time identified from the information on the call connection time. You can calculate the talk time.

The above-described method for a wireless data network based call service according to the present invention may be implemented as a program and recorded in a computer readable recording medium, wherein the program instructions are those specially designed and configured for the present invention or computer software. It may be known and available to those skilled in the art. For example, the recording medium may be a magnetic medium such as a hard disk, a floppy disk, or a magnetic tape, an optical media such as a compact disk read only memory (CD-ROM), a digital video disk (DVD), or a floppy. Magnetic-Optical Media, such as floppy disks, and hardware devices specifically configured to store and execute program instructions, such as ROM, random access memory (RAM), flash memory, and the like. do. Examples of program instructions may include high-level language code that can be executed by a computer using an interpreter, as well as machine code such as produced by a compiler. Such hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

According to the present invention, when an abnormal termination occurs due to network disconnection or battery disconnection while providing a call service based on a wireless data communication network, an actual call except for a silence occurrence section in which an actual call cannot be made before the call is terminated. By calculating the time, there is an excellent effect of improving the user's satisfaction while preventing the excessive addition of the communication fee.

Particularly, the present invention checks whether or not to receive an update message periodically transmitted from a terminal device connected through a wireless data communication network, and when a call termination occurs by not receiving an update message for a preset time, except for the preset time. By calculating the actual call time, it is possible to compensate for the time difference between when the actual call ends and when the abnormal end condition is detected, and as a result, it is possible to prevent an excessive addition of communication charges, which may be industrially applicable.

10: communication network 100: terminal device
13: exchange device 300: service device
310: communication unit 320: control unit
330: storage 400: charging device

Claims (8)

Check whether the update message is periodically transmitted from the terminal device to which the call is connected through the wireless data communication network, and if the update message is not received for a preset time, terminates the call to the corresponding terminal device. A service device for generating charging information including information on a call connection time and information on a cause of termination of a call indicating that the call is terminated by not receiving an update message for a preset time; And
When the charging information is received from the service device, a charging device that calculates the actual talk time of the terminal device by subtracting a preset time according to the cause of termination of the call and performs the billing processing according to the calculated actual talk time. Support system for a wireless data communication network-based call service, characterized in that. The method of claim 1, wherein the charging device,
When the cause of termination of the call is not received an update message for a preset time, the actual call time is calculated by subtracting the preset time from the total call connection time identified from the information on the call connection time. Support system for wireless data communication network based call service. A communication unit for transmitting and receiving a control message for call processing of terminal devices connected through a wireless data communication network; And
After checking whether the update message is periodically transmitted from the terminal device to which the call is connected through the wireless data communication network, and if the update message has not been received for a preset time, the call is terminated for the terminal device. By generating charging information including information on the call connection time of the device and information on the cause of termination of the call indicating that the call was terminated by not receiving an update message for a preset time, and controlling to transmit to the charging device, the charge termination cause A controller configured to calculate an actual call time of the terminal device by subtracting a preset time;
Service apparatus for a wireless data communication network-based call service comprising a. The method of claim 3, wherein the control unit
And terminating a call to the terminal device by transmitting a call termination message to the terminal device to a switching device of a wireless data communication network to which the terminal device is connected. The method of claim 3, wherein the control unit,
After checking whether the update message is periodically transmitted from the terminal device to which the call is connected through the wireless data communication network, and if the update message has not been received for a preset time, the call is terminated for the terminal device. A billing termination confirmation unit for extracting information on a call connection time of the device; And
When the termination of the call of the terminal device is performed, the charge information generation unit obtains information on the call connection time of the terminal device and information on the cause of the call termination from the charge end confirmation unit, and generates the charge information including the same. ;
Service apparatus for a wireless data communication network-based call service comprising a. The method of claim 3, wherein the preset time is
And a multiple of a transmission period of the update message. The method of claim 3, wherein the information on the call connection time is
Or a total call connection time corresponding to an elapsed time from a call connection start time of the terminal device to an end of the call. Service device. Confirming whether or not to receive an update message periodically transmitted from a terminal device to which a call is connected through a wireless data communication network;
Performing a call termination of the terminal device when the update message has not been received for a preset time;
Generating charging information including information on a call connection time of the terminal device, which is terminated by the call, and information on a call termination cause indicating that the call is terminated by not receiving an update message during the preset time; And
Transmitting the generated billing information to a billing device to calculate an actual talk time of the terminal device by subtracting a preset time according to the cause of termination of the call;
Method for wireless data network based call service comprising a.

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