JPH0730479A - Call connecting system for automobile telephone system - Google Patents

Abstract

PURPOSE:To connect a call by selecting a terminating subscriber inputting a condition capable of registering a position and returning a response to a mobile communication service center by plural terminating subscribers without allowing an originating subscriber to directly dial the terminating subscriber in an automobile telephone system. CONSTITUTION:A cellular type mobile communication system has a mobile terminal 8 subscribing for a specific user group and capable of sending three pieces of information, i.e., a mobile set number, position information and information indicating whether response is possible at present or not, and mobile service switching center 2 having an existence register 1 for registering at least the three pieces of information applied from the terminal 8 through an inter-cell base station 4C, and is characterized by sending call signals from plural subscribers 7 subscribing for the specific user group to the center, selecting a mobile terminal 8 most close to the existing position of the calling subscriber and connecting the call.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call connection system for a car telephone, and more particularly, when a specific subscriber who possesses a radio for a specific group user searches for a taxi waiting for a passenger who is empty. The present invention relates to a call connection method for a car telephone that can select one of the taxis in a response waiting state depending on a customer waiting state.

[0002]

2. Description of the Related Art Conventionally, in the existing car telephone system, when a user who wants to use a taxi calls a taxi, the user first calls an arbitrary taxi company and searches for a taxi waiting for a taxi. Then, the taxi company investigated the current position of all cars and whether there are any empty cars waiting for customers by using a dedicated wireless system that was built by the taxi company, and had the appropriate taxi selected and dispatched.

[0003]

In this conventional car telephone call connection system, even a subscriber who has a portable radio telephone connectable to an exchange can directly search for vacant information such as a taxi. There was no way to call the empty taxi automatically.

The object of the present invention is to limit the number of callees such as individual taxis by dialing this specific group subscriber number using a radio for a specific group user exchange center in an existing car telephone system. It is to solve the problem that a call connection cannot be made without it.

[0005]

According to the call connection system for a car telephone of the present invention, in a cellular car telephone system, a user of a specific group is subscribed to, firstly a mobile station number, secondly position information and thirdly. A mobile terminal that sends out three pieces of information indicating whether or not a current response is possible, and a mobile service switching center having a location register that registers at least the three pieces of information from this mobile terminal via an in-cell base station. A plurality of subscribers who subscribe to the specific group user, send a call signal to the mobile service switching center, select the mobile terminal closest to the location of the calling subscriber, and connect the call. Is characterized by.

[0006]

The present invention will be described below with reference to the drawings.

FIG. 1 is a network configuration diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of data of a specific group user managed on a database of an exchange in the embodiment of FIG. 1, and FIG. FIG. 5 is an explanatory diagram of message data from a terminal belonging to a specific group user to a switch in the embodiment of the present invention.

The embodiment shown in FIG. 1 is a network of a cellular car telephone system, and the car radio service area includes a calling area 6A composed of cells 5A, 5B and 5C and cells 5D, 5E and 5F. The cells 5A to 5C are connected to the base control station 3A via the base stations (BTS) 4A to 4C, respectively. The cells 5D to 5F are connected to the base control station 3B via the base stations (BTS) 4D to 4F, respectively. The base control stations 3A and 3B are connected to a mobile services switching center (MSC) 2, and the MSC 2 manages the position information of the mobile terminal 8 and the movement information between cells. The management information is stored in the location register (LR) 1 provided in the MSC 2. The LR1 management information stored in this LR1 will be described with reference to FIG. In LR1, the mobile number 9 belonging to a specific group user is used as an argument from the memory, and the relationship between the subscriber number 10, the current calling area (for example, 6A) and the position information 11 indicating the cell (for example, 5C), and the current calling area is set. Information of a response availability indicator 12 indicating whether or not a call is available is stored. On the other hand, as shown in FIG. 3, the mobile terminal 8 belonging to the specific group user uses the message type 13, the mobile device number 14, the subscriber number 15, the position information 16, and the response availability display 17 as a message to be used when the mobile service is available. It communicates with the LR1 of the exchange center 2 and registers it while updating it whenever the situation changes. That is, as shown in FIG. 2, this registration information is registered for each mobile device number subscribed to the specific group user.

Here, when an unspecified subscriber, for example, a subscriber who wants to call a taxi mentioned above, uses the terminal 7 to communicate with the mobile terminal 8 belonging to a specific group user,
Dial a number that requires communication with a specific group user that has been determined in advance. Mobile switching service center 2
Is based on the location information of the terminal 7 sent together with the dial, the mobile station number 9, the subscriber number 10, the location information 11, and the response availability display 12 of the data of the specific group user in FIG. , The mobile terminal 8 in the calling area closest to the cell in which the terminal 7 is located is selected to establish a call connection. Although the embodiment of the present invention has been described as being applied to communication between taxis and taxi users, it can also be used as communication communication between groups that have registered location registration information as a specific group user in the center. It is possible.

[0010]

As is apparent from the above description, the present invention requires communication with a mobile terminal belonging to a specific group user, regardless of where in the service area the originator of the wireless device registered as the specific group user is. By dialing the number to be dialed, it is possible to communicate with the terminal belonging to the specific group user closest to the caller.

[Brief description of drawings]

FIG. 1 is a network configuration diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a location register of the embodiment of FIG.

FIG. 3 is an explanatory diagram of contact information from the mobile terminal of the embodiment of FIG.

[Explanation of symbols]

 1 Location Register (LR) 2 Mobile Service Switching Center (MSC) 3A, 3B Base Control Station (BSC) 4A-4F Base Station (BTS) 5A-5F Cell 6A, 6B Calling Area 7 Terminal 8 Mobile Terminal

Claims (1)

[Claims] 1. In a cellular car telephone system,
A mobile terminal that joins a specific group user and sends out first a mobile station number, secondly position information, and thirdly three pieces of information indicating whether or not a current response is possible, and at least the mobile terminal from the mobile terminal. A mobile service switching center having a location register for registering three pieces of information via an in-cell base station, and a call signal is sent to the mobile service switching center from a plurality of subscribers who have subscribed to the specific group user. A call connection system for a car telephone, characterized in that the mobile terminal closest to the location of the calling subscriber is selected for call connection.