JPH1114733A - Location system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a location system capable of reducing to the utmost the fee for a telephone call, because the fee for a telephone call becomes high so that the running cost becomes expensive, when a portable telephone is used for a communica tion medium. SOLUTION: This system is constituted of a base station A and a movable station B. The base station A is provided with a transmitting part 2 controlling dispatch of a message by a telephone 1 transmitting/receiving data against the movable station B, a data communication part 3 analysing/generating the data, a map memory part 5, a display part 6 displaying the position of the movable station B obtained by the data communication part on a map, and a transmitting stop judging part 12 stopping dispatch of a message in the case of being not received by the movable station B. The movable station B is provided with a message received part 8 controlling the message received of a portable telephone 7 transmitting/receiving data against the base station A, a data communication part 9 analysing/generating the data, a GPS part 11 simultaneously receiving electric waves from a plurality of GPS satellites and obtaining the measured position data of the present place, and a message received judging part 13 judging whether the telephone message from the base station A is received or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a location system for receiving location data of a mobile station using a portable telephone as a communication medium.

[0002]

2. Description of the Related Art The operation of a conventional location system will be described below. FIG. 4 is a block diagram of a conventional location system, FIG. 5 is a flowchart of a base station of the location system, and FIG. 6 is a flowchart of a mobile station of the location system. In FIG. 4, A 'is a base station for centrally managing the positions of a plurality of mobile stations, and B' is a mobile station. In the base station A ', 1 is a telephone for transmitting and receiving data to and from the mobile station B', 2 is a transmitting unit for controlling transmission of the telephone 1, and 3 is a data communication unit for analyzing and generating data to be transmitted and received. Reference numeral 4 denotes a control unit for performing overall control and calculation, etc., 5 denotes a map storage unit in which map data is stored, 6 denotes a map data read from the map storage unit 5 and displays the obtained data. And a display unit for displaying the position of the mobile station B '.

In mobile station B ', 7 is base station A'
A mobile phone for transmitting and receiving data to and from the mobile phone, 8 is a receiving unit for controlling the incoming call of the mobile phone 7, 9 is a data communication unit for analyzing and generating data to be transmitted and received, and 10 is for overall control and calculation. The control unit 11 includes a plurality of GPS (Gro
bal Positioning System) To simultaneously receive radio waves from satellites and obtain positioning data for the current location.
This is the PS section.

The operation of the conventional location system configured as described above will be described below with reference to flowcharts shown in FIGS. First, the base station makes a call to the mobile station via the telephone 1 by the transmission unit 2 (STEP 301). When the mobile station receives a telephone call (STEP 401), the GPS unit 11 measures the current position (STEP 402), and the receiving unit 8 receives a call from the base station via the mobile phone 7 (STEP 403). When the line is connected, the data communication unit 9 generates the current location data and transmits it to the base station (STE
P404).

[0005] If the line is connected (STEP 30)
2) Position data is received from the mobile station, the data communication unit 3 analyzes the position data, and updates the position of the mobile station (ST).
EP 303). Then, the telephone line is disconnected by the transmitting unit 2 (STEP 304). Finally, the map storage unit 5 is displayed on the display unit 6.
And calls and displays the map data, and displays the position of the mobile station received earlier on the map (STEP 30).
5). By repeating this operation for a plurality of mobile stations, the base station is configured so that the positions of all the mobile stations can always be grasped.

[0006]

However, the conventional location system has a problem in that if a mobile phone is used as a communication medium, the operating cost becomes too high and the call charge becomes high.

[0007] Accordingly, an object of the present invention is to provide a location system capable of reducing a call charge as much as possible.

[0008]

A location system according to the present invention comprises a telephone for transmitting / receiving data to / from a mobile station at a base station side, a transmitting unit for controlling telephone transmission, and an analysis of data to be transmitted / received. A data communication unit that performs generation, a control unit that performs overall control and calculations, a map storage unit that stores map data, and a data communication unit that reads and displays map data from the map storage unit and displays it. A display unit for displaying the position of the mobile station obtained in step 1 and a transmission stoppage determination unit for stopping transmission when the mobile station does not receive a call, and a mobile unit for transmitting and receiving data to and from the base station on the mobile station side. Telephone, incoming call part that controls incoming calls of mobile phones, data communication part that analyzes and generates data to be transmitted and received, control part that performs overall control and calculation, and receives radio waves simultaneously from multiple GPS satellites GPS to obtain the positioning data of the current location Te
And an incoming call judging unit for judging whether a call from a base station is received. With this configuration, when there is no change in the position of the mobile station, the telephone line is not connected, thereby reducing operating costs and reducing call charges.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A location system according to the present invention comprises a telephone for transmitting / receiving data to / from a mobile station at a base station side, a transmitting unit for controlling telephone transmission, and analysis / generation of data to be transmitted / received. A data communication unit, which performs overall control and calculations, a map storage unit in which map data is stored, reads and displays map data from the map storage unit, and obtains the data on the map by the data communication unit. A display unit that displays the position of the mobile station, and a transmission stoppage determination unit that stops transmission if the mobile station does not receive a call, and a mobile phone that transmits and receives data to and from the base station on the mobile station side. ,
A receiving unit for controlling incoming calls of mobile phones, a data communication unit for analyzing and generating data to be transmitted / received, a control unit for performing overall control and calculations, and a receiving unit for simultaneously receiving radio waves from a plurality of GPS satellites to determine a current location. A GPS unit for obtaining positioning data,
An incoming call judging unit for judging whether an incoming call from a base station is received. With this configuration, when there is no change in the position of the mobile station, the telephone line is not connected, so that the call charge can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a location system according to an embodiment of the present invention, FIG. 2 is a flowchart of a base station of the location system, and FIG. 3 is a flowchart of a mobile station of the location system.

In FIG. 1, A is a base station for centrally managing the positions of a plurality of mobile stations, and B is a mobile station. In the base station A, 1 is a telephone for transmitting / receiving data to / from the mobile station B, 2 is a transmitting unit for controlling transmission of the telephone 1, 3 is a data communication unit for analyzing / generating data to be transmitted / received, 4 Is a control unit for performing overall control and calculation, etc., 5 is a map storage unit in which map data is stored, 6 is a device for reading and displaying map data from the map storage unit 5 and obtained by the data communication unit 3 on the map. A display unit for displaying the position of the mobile station, and a transmission stop determination unit 12 for stopping the transmission when the mobile station does not receive a call.

In the mobile station B, 7 is a portable telephone for transmitting and receiving data to and from the base station A, and 8 is a portable telephone 7.
A data communication unit for analyzing / generating data to be transmitted / received; a control unit for performing overall control and calculation; and 11: receiving a radio wave from a plurality of GPS satellites simultaneously to determine a current location. GPS unit to obtain positioning data of
Reference numeral 13 denotes an incoming call determination unit that determines whether or not a call from the base station A is received.

The operation of the location system configured as described above will be described below with reference to the flowcharts of FIGS. First, the base station initializes a counter i for the number of calls to 0 in the transmission stoppage determination unit 12 (STEP 101). Next, transmitter 2
Makes a call to the mobile station via telephone 1 (STE
P102). When the mobile station receives a telephone call (S
(Step 201) The current position is measured by the GPS unit 11 (STEP 202), the position transmitted last time is compared with the current position by the incoming call determination unit 13 (STEP 203). A call is received from the base station A via the terminal (STEP 204). When the line is established, the data communication unit 9 generates the current location data and transmits it to the base station A (STEP 205).

When the line is connected (STEP 10)
3), receive the position data from the mobile station, and analyze the position data in the data communication unit 3 to update the position of the mobile station (S)
TEP104). Then, the telephone line is disconnected by the transmission unit 2 (STEP 105). Alternatively, if the position compared in STEP 203 is the same as the previous position, the mobile station does not receive a call. In this case, the base station counts up the number i of calls by the outgoing call cancellation determination unit 12 (STEP 107).
When the counter i becomes 10 or more (STEP108)
The calling is stopped and the line is disconnected (STEP 109). Finally, the display unit 6 calls and displays the map data from the map storage unit 5 (STEP 106), and displays the mobile station B on the map.
If the position is updated, the position of the mobile station received earlier is displayed, and if the position is not updated, the same position as the previous position is displayed. By repeating this operation for a plurality of mobile stations, the base station can always grasp the positions of all the mobile stations.

[0015]

As described above, according to the present invention, in a location system for receiving location data of a mobile station using a portable telephone as a communication medium, the operation cost in the operation of transmitting and receiving location information is reduced, and the call charge is increased. You can save on width.

[Brief description of the drawings]

FIG. 1 is a block diagram of a location system according to an embodiment of the present invention.

FIG. 2 is a flowchart of a base station of the location system according to the embodiment of the present invention;

FIG. 3 is a flowchart of a mobile station of the location system according to the embodiment of the present invention.

FIG. 4 is a block diagram of a conventional location system.

FIG. 5 is a flowchart of a base station in a conventional location system.

FIG. 6 is a flowchart of a mobile station in a conventional location system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone 2 Transmission part 3 Data communication part 4 Control part 5 Map storage part 6 Display part 7 Mobile telephone 8 Receiving part 9 Data communication part 10 Control part 11 GPS part 12 Outgoing call judgment part 13 Incoming judgment part

Claims (1)

[Claims] 1. A telephone for transmitting / receiving data to / from a mobile station to a base station, a transmitting unit for controlling transmission of the telephone,
A data communication unit for analyzing and generating data to be transmitted and received;
A control unit that performs overall control and calculation, a map storage unit that stores map data, reads and displays map data from the map storage unit, and displays the position of the mobile station obtained by the data communication unit on the map. A display unit for displaying, and a transmission stoppage determination unit for stopping transmission when the mobile station does not receive a call, and a mobile phone for transmitting and receiving data to and from the base station on the mobile station side, and controlling the reception of the mobile phone Receiving unit, a data communication unit that analyzes and generates data to be transmitted and received, a control unit that performs overall control and calculations, and a GP that simultaneously receives radio waves from a plurality of GPS satellites and obtains positioning data of the current location.
A location system, comprising: an S unit; and an incoming call determination unit that determines whether a call from a base station is received.