KR100462043B1 - Method and apparatus for extension call service by private mobile communication system - Google Patents

Abstract

The present invention relates to an extension call service method and apparatus of a private mobile communication system for effectively informing whether an extension call service area is provided to a mobile communication terminal located in an extension call service area by a private mobile communication system. The present invention sets an extension call service to an idle bit of an overhead message, and transmits an overhead message of which service is set to a mobile communication terminal, and receives a location registration request message according to whether the overhead message is serviced from the mobile communication terminal. The received-location registration request message is a message for service request. The location registration request message determines whether the mobile communication terminal is a service subscriber, and when the mobile terminal is a service subscriber, displays an icon indicating message indicating a service area. The mobile communication terminal transmits to the mobile communication terminal, and the mobile communication terminal displays an icon indicating a service area by an icon display message.

Description

Method and apparatus for extension call service in private mobile communication system {METHOD AND APPARATUS FOR EXTENSION CALL SERVICE BY PRIVATE MOBILE COMMUNICATION SYSTEM}

The present invention relates to an extension call service method and apparatus of a private mobile communication system, and more particularly, to a mobile communication terminal located within an extension call service area by a private mobile communication system to effectively notify whether an extension call service area exists. An extension call service method and apparatus of a communication system.

In general, voice calls in the premises are made through a private exchange such as a key phone system, and data communication services in the premises are made through a LAN switch and a router using a server.

On the other hand, mobile communication is serviced by accessing a mobile communication system using a mobile communication terminal which is easy to carry.

As described above, mobile communication services have tended to increase exponentially due to the advantages of easy portability. In addition, the company often pays mobile communication terminals to employees for company work.

Due to the convenience of such a mobile communication terminal, an extension call service by a private mobile communication system in which an extension telephone call made free of charge in the premises by a mobile communication terminal is provided.

An extension call service process by the private mobile communication system will be described in detail as follows.

First, in order to make an extension telephone call using a mobile communication terminal, a service subscriber inputs an extension telephone number including preset identification information and then performs a call.

Here, the identification information is preset information such as '#', and is information for recognizing that it is an extension telephone call by the mobile communication terminal in the private mobile communication system.

Subsequently, the private mobile communication system installed in the premises receives an outgoing call of the mobile communication terminal, recognizes that the call is an extension telephone call by identification information included in the received extension phone number, and then communicates with another mobile communication terminal having the corresponding extension phone number. Set the currency path.

Therefore, extension telephone calls between mobile communication terminals by private mobile communication systems are made free of charge in the premises.

In the existing extension call service performed through the above process, the mobile communication terminal user cannot determine whether the extension call service is available.

That is, the user who receives the extension call service by the private mobile communication system does not recognize that he or she is out of the service area, and there is a problem of performing an outgoing call to receive the extension call service using the mobile communication terminal.

Accordingly, the present invention has been made to solve the problems of the prior art, and the extension call method of the private mobile communication system for displaying an extension call service icon for indicating the extension call service area by the private mobile communication system to the mobile communication terminal; And to provide a device.

1 is a schematic configuration diagram of an extension call service system according to the present invention;

2 is a schematic configuration diagram of an extension call service area checking operation according to the present invention;

3 is a diagram illustrating a registration form and type of a registration message;

4 is a flowchart illustrating a method of performing an extension call service area confirmation by a private base station controller of the present invention.

5 is a flowchart illustrating a method of performing an extension call service area check of a first to N th mobile communication terminals of the present invention;

<Description of the code for the main part>

100: private base station controller

110-1, ..., 110-N: first to Nth mobile communication terminals

120: private base station

130: Private Home Location Register

140: service subscriber database

The present invention for achieving the above object is an extension telephone service method and apparatus between a plurality of mobile communication terminals connected to a private mobile communication system, the extension call service is set to the idle bit of the overhead message, Transmits the set overhead message to the mobile communication terminal, and receives a location registration request message according to whether the overhead message is serviced from the mobile communication terminal, wherein the location registration request message is a message for a service request; Determining whether the mobile communication terminal is a service subscriber, and when the mobile communication terminal is a service subscriber, transmits an icon display message indicating a service area to the mobile communication terminal. The mobile communication terminal displays an icon indicating a service area by an icon display message. Display There are features that the private mobile communication service station method for the communication system and an apparatus which is characterized in providing.

Here, the location registration request message is set in the idle bit of the registration message transmitted from the mobile communication terminal to the mobile communication system.

In addition, the present invention connects a mobile communication terminal to a mobile communication system for voice or data service when the mobile communication terminal is not a service subscriber.

Another feature of the present invention is to receive from the private mobile communication system an overhead message set whether or not to make an extension call service, and whether the extension call service is set to an idle bit of the overhead message, by the idle bit of the received overhead message. Determining whether the extension call service is performed, when the extension call service is performed, transmitting a location registration request message to the private mobile communication system, and receiving a specific message selectively transmitted from the private mobile communication system according to the location registration request message; The specific message includes the extension call service icon display request information indicating that the mobile terminal is located in the service area-the extension call service icon is displayed by the specific message, and the mobile terminal user can service the extension call service icon. female It has confirmed that the recognition should the mobile station calls the service area of the terminal, characterized in the method and apparatus to provide.

Here, the private mobile communication system determines whether the subscriber is an extension telephone service based on the preset service subscriber information and the location registration request message.

Hereinafter, a preferred embodiment of an extension call service method and apparatus of a private mobile communication system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of an extension call service apparatus of a private mobile communication system according to the present invention, FIG. 2 is a schematic configuration diagram of an extension call service area confirmation operation of a private mobile communication system according to the present invention, and FIG. A diagram illustrating a registration type and type of a message.

1, an extension call service apparatus of a mobile communication system according to the present invention is a private base station controller (BSC) 100, the first to N-th mobile communication terminal (110-1, ..., 110-N) Private base station 120, private home location register (HLR) 130, and service subscriber database 140.

Here, private home location register 130 and private base station 120 are private mobile communication systems operated by private base station controller 100.

The private home location register 130 receives the information of the first to Nth mobile communication terminals 110-1,..., 110 -N providing the extension call service input by the private base station controller 100. Stored in the database 140.

In addition, the private home location register 130 transfers the first through N-th mobile communication terminals 110-1,..., 110 -N information stored in the service subscriber database 140 to the private base station controller 100. send.

The first to N th mobile communication terminals 110-1,..., 110 -N transmit a location registration message to the private base station controller 100 through the private base station 120, and from the private base station controller 100. The extension call service icon is displayed by a message for displaying the received extension call service icon.

The private base station controller 100 transmits an extension call service to the first to N th mobile communication terminals 110-1,..., 110 -N by using the idle bit of the overhead message. The location registration message from the N mobile communication terminals 110-1,..., 110 -N is compared with the subscriber information provided from the private home location register 130 to determine whether the subscriber is an extension telephone service.

The private base station controller 100 transmits a message for displaying the extension call service icon indicating the extension call service area to the first to Nth mobile communication terminals 110-1,..., 110 -N.

The service subscriber database 140 stores service subscriber information provided by the private base station controller 100 for extension telephone service.

An extension call service area confirmation operation of the mobile communication system according to the present invention having the above-described configuration will be described with reference to FIG.

The private base station controller 100 includes a first to Nth mobile communication terminal 110-1, which is connected through the private base station 120, including a message indicating whether an extension call is serviced in the idle bit of the overhead message. 110-N) (S200).

For example, if the idle bit is 1, the extension message service is performed. If the idle bit is 0, the overhead message is set to indicate that the extension call service is not performed. Transmit to (110-1, ..., 110-N).

In general, the overhead message includes system parameter information, service access information of a terminal, base station frequency information, information for international roaming, and information about a neighboring base station.

The first to Nth mobile communication terminals 110-1,..., 110 -N determine whether an extension call service is performed by the idle bit of the received overhead message, and when the extension call service is performed, the extension call is performed. The registration message including the location registration message for receiving the service is transmitted to the private base station controller 100 through the private base station 120 (S202).

The registration message including the location registration message for receiving the extension call service is illustrated in FIG. 3.

Referring to FIG. 3, a registration message includes a message indicating whether a call service area is present (REG_TYPE 0000), a message indicating that the terminal is powered on (REG_TYPE 0001), a message indicating that a service zone is changed (REG_TYPE 0010), and a terminal. Message (REG_TYPE 0011) indicating that the power is off, a message indicating that the network is changed (REG_TYPE 0100), and a location registration request message (REG_TYPE 1101) for receiving an extension call service.

The private base station controller 100 receives the registration message as shown in FIG. 3, and receives the first to N th mobile communication terminals 110-1,..., 110-by the received registration message location registration request message REG_TYPE 1101. Recognize that N) wants to receive the extension call service.

Subsequently, the private base station controller 100 searches for the service subscriber database 140 managed by the private home location register 130 according to the received registration message to search for the first through N-th mobile communication terminals 110-1, .. It is determined whether .110-N) is an extension call service subscriber (S204).

That is, the private base station controller 100 searches the service subscriber database 140, and when the first to N-th mobile communication terminals 110-1, ..., 110-N are extension call service subscribers, the extension call service. A message for displaying the extension call service icon indicating the area to the terminal is transmitted to the first to Nth mobile communication terminals 110-1,..., 110 -N through the private base station 120 (S206).

The first to N th mobile communication terminals 110-1,..., 110 -N display the extension call service icon on the screen of the terminal by a message for displaying the extension call service icon received from the private base station controller 100. Display on the screen.

On the other hand, the private base station controller 100, if the first to N-th mobile communication terminal (110-1, ..., 110-N) is not an extension call service subscriber, the first to N-th mobile communication terminal (110-) 1,... 110-N are connected to an exchange (not shown) of a conventional mobile communication system providing voice calls or data services.

An extension call service area confirmation method of a private mobile communication system according to the present invention configured and operated as described above will be described with reference to the accompanying drawings.

4 is a flowchart illustrating a method of performing extension call service area identification by a private base station controller according to the present invention.

First, the private base station controller 100 transmits an overhead message set whether the extension call service is idle to the first to Nth mobile communication terminals 110-1,..., 110 -N (S400).

Here, the first to Nth mobile communication terminals 110-1,..., 110 -N determine whether the extension call service is set in the idle bit of the overhead message, and when the extension call service is being performed, the extension call is performed. The location registration request message requesting the service provision is transmitted to the private base station controller 100.

Subsequently, the private base station controller 100 receives a registration message including a location registration request message requesting to provide an extension call service from the first to Nth mobile communication terminals 110-1,..., 110 -N. (S402).

The private base station controller 100 searches the service subscriber database 140 by the location registration request message received from the first to Nth mobile communication terminals 110-1,. It is determined (S404).

If the first to N-th mobile communication terminal (110-1, ..., 110-N) is a service subscriber in the step (S404) (S406), the private base station controller 100 indicates that the extension call area A message for displaying an icon is transmitted to the first to N th mobile communication terminals 110-1,..., 110 -N (S408).

Here, the first to Nth mobile communication terminals 110-1,..., 110 -N display an extension call service icon on the screen indicating that the call is an extension call area by a message received from the private base station controller 100. Display.

On the other hand, if the first to N-th mobile communication terminal (110-1, ..., 110-N) is not a service subscriber, the private base station controller 100 is the first to N-th mobile communication terminal (110-1, 110-N is connected to an exchange of a mobile communication system providing a voice call and data service (S410).

FIG. 5 is a flowchart illustrating a method for performing local call service area confirmation of the first to Nth mobile communication terminals of the present invention.

First, the first to N th mobile communication terminals 110-1,..., 110 -N receive an overhead message including a message indicating whether an extension call service is provided from the private base station controller 100 (S500).

Subsequently, the first to N th mobile communication terminals 110-1,..., 110 -N determine whether an extension call service is provided based on the received overhead message (S502).

When the extension call service is performed in the above step (S502) (S504), the first to N-th mobile communication terminal (110-1, ..., 110-N) registers the location to receive the extension call service The registration message including the request message is transmitted to the private base station controller 100 (S506).

Subsequently, the first to N th mobile communication terminals 110-1,..., 110 -N receive a message from the private base station controller 100 to display the extension call service icon indicating the extension call service area ( In operation S510, the extension call service icon is displayed according to the received message.

The method and apparatus for confirming an extension call service region of a private mobile communication system according to the present invention confirms whether a mobile communication terminal is an extension call service subscriber by a location registration request message received from a mobile communication terminal receiving an overhead message. An extension call service icon is displayed on the terminal indicating that the extension call service area is displayed.

Therefore, the present invention displays the extension call service icon indicating the extension call service area only in the mobile communication terminal of the service subscriber of the private mobile communication system that provides the extension call service, so that the mobile communication system may be located outside the service area of the private mobile communication system. There is an effect that can prevent confusion of the service subscriber located.

In addition, the present invention performs routing to the exchange of the mobile communication system for providing a voice call or data service, if the service subscriber is not provided with the extension call service by the private mobile communication system, so that the switch of the mobile communication system There is also an effect that the communication service can be made quickly.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art that various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below And can be changed.

Claims (8)

An extension telephone service method between a plurality of mobile communication terminals connected to a private mobile communication system, Setting whether to service the idle bit of an overhead message; Transmitting an overhead message in which the service is set to mobile communication terminals; Receiving a location registration request message according to whether the overhead message is serviced from a mobile communication terminal that receives the overhead message, wherein the location registration request message is a message for the service request; Determining whether the mobile communication terminal is the service subscriber in response to the location registration request message; If the mobile communication terminal is a service subscriber, transmitting an icon display message indicating the service area to the mobile communication terminal. Including, And the mobile communication terminal displays an icon representing a service area in response to an icon display message. The method of claim 1, And the location registration request message is set to an idle bit of a registration message transmitted from the mobile communication terminal to the mobile communication system. The method of claim 1, If the mobile communication terminal is not a service subscriber, connecting the mobile communication terminal to a mobile communication system for voice or data service; The extension call service method of the private mobile communication system further comprising. In the method of confirming the service area of a mobile communication terminal provided with an extension call service by a private mobile communication system installed in the premises, Receiving an overhead message in which the extension call service is set from the private mobile communication system, wherein the extension call service is set in an idle bit of the overhead message; Determining whether an extension call is serviced by an idle bit of the received overhead message; When the extension call service is performed, transmitting a location registration request message to the private mobile communication system; Receiving an icon display message transmitted from the private mobile communication system in response to the location registration request message, wherein the icon display message indicates extension call service icon display request information indicating that the mobile communication terminal is located in the service area. Includes; And And displaying the extension call service icon in response to the icon display message. The method of claim 4, wherein And the location registration request message is set to an idle bit of a registration message transmitted from the mobile communication terminal to the mobile communication system. The method of claim 4, wherein And the private mobile communication system determines whether the extension call service subscriber is based on preset service subscriber information and the location registration request message. A mobile communication terminal provided with an extension call service by a private mobile communication system, Means for receiving an overhead message and an icon display message from the private mobile communication system, wherein the icon display message includes extension call service icon display request information indicating that the mobile communication terminal is located in the service area; Means for determining, by the overhead message, whether the extension call is serviced; Means for setting a location registration request for an extension call service request in a registration message transmitted to the private mobile communication system in correspondence with the extension call service; Means for sending a registration message with the location registration request set to the private mobile communication system; And Means for displaying the extension call service icon in response to the icon display message Mobile communication terminal comprising a. An apparatus for providing an extension call service between a plurality of mobile communication terminals connected to a private mobile communication system, Means for setting an extension call service on an idle bit of an overhead message transmitted to said mobile communication terminal; Means for receiving a location registration request message from the mobile communication terminal in response to the extension call service of the overhead message; Means for determining, by the location registration request message, whether the mobile subscriber is a service subscriber; Means for transmitting, to the mobile communication terminal, an icon display message for displaying an extension call icon indicating that the extension is a service area when the mobile communication terminal is a service subscriber; And Means for connecting the mobile communication terminal to a mobile communication system that performs voice and data services when the mobile communication terminal is not a service subscriber; Extension call service apparatus of a private mobile communication system comprising a.