JPH09322242A - Mobile radio equipment with current position display function and navigation system using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow even a mobile radio equipment of a mobile communication system that has only a small sized display device displaying only character information to confirm a current position (place name). SOLUTION: Each base station 10 sends its own base station identification number (ID code) to a mobile radio equipment (portable telephone set 40) placed in its own radio zone 11. The portable telephone set stores cross reference between the ID code of each base station address information of the installed location as to each base station in advance and obtains the address information corresponding to the ID code when the ID code is received from a base station controlling a radio zone of its own position, converts the obtained address information into character information and displayed on a display device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile wireless device with a current position display function and a navigation system using the same, and particularly to a unique base station identification code installed in each of a plurality of wireless zones into which a service area is divided. The present invention relates to a mobile wireless device that communicates with a plurality of allocated wireless base stations, and a navigation system (positional information display system) that uses a mobile communication system including these wireless base stations and mobile wireless devices.

[0002]

2. Description of the Related Art As a conventional position information display system using a mobile radio, there is, for example, a satellite system. In this satellite system, the mobile radio stores the map information in the memory, and when it receives a predetermined signal from an artificial satellite, it recognizes the current position on the map information in the memory from this signal and The current position of is displayed and output on the display device. In addition to the above, the terrestrial wireless base station corresponding to the origination position of the mobile wireless device (portable wireless phone) transmits the position information together with the surrounding map information to the mobile wireless device, and includes the position information received by the mobile wireless device. There is a system for displaying and outputting map information on a display device (Japanese Patent Laid-Open No. Hei 4-
(See Japanese Patent No. 152724).

[0003]

However, current mobile radios such as portable radio telephones have been extremely miniaturized and their display devices have also been miniaturized. There is a problem that it cannot be applied to information display and its usability is poor.

Therefore, an object of the present invention is to present a user with a mobile radio having only a display device which is so small as to be unsuitable for displaying map information, by outputting the position information in characters. It is an object of the present invention to provide a mobile radio device with a current position display function that enables position notification and has improved usability, and to provide a navigation system using the mobile radio device with the current position display function.

[0005]

A mobile radio device with a current position display function according to the present invention is a plurality of radio base stations installed in a plurality of radio zones into which service areas are divided and assigned unique base station identification numbers. In a mobile wireless device that communicates with a station, a table storing the correspondence between the base station identification number of each of the plurality of base stations and the location information of the installation location, and among the plurality of base stations A means for communicating with a base station having jurisdiction over the wireless zone in which it is located to receive the corresponding base station identification number; a means for searching the table according to the received base station identification number to obtain corresponding address information; And means for converting the address information into character information and displaying it on a display.

Further, the navigation system of the present invention is a mobile communication system having a plurality of radio base stations having the above-mentioned configuration and a mobile radio device, wherein each of the plurality of base stations is located in its own radio zone. Communicates with a radio device and transmits the base station identification number assigned to itself, and the mobile radio device previously associates the base station identification number of each of the plurality of base stations with the location information of the installation location. When stored, when the base station identification number is received from the base station that controls the wireless zone in which it is located, the location information corresponding to this base station identification number is obtained, and the obtained location information is converted to character information. It has a configuration that is converted and displayed on a display.

[0007]

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

FIG. 1 is a system configuration diagram of the navigation system of the present invention. In FIG. 1, a navigation system 1 forms a part of a mobile communication system, and a network 2
0, a plurality of base stations 10 corresponding to a plurality of wireless zones 11, a mobile phone control station 30, and a plurality of mobile phones 40 as mobile wireless devices (mobile communication bodies). The line network 20 is a PSTN (public telephone line network) or ISDN (In
integrated Services Digital
Network) or the like, and enables communication via a line. The mobile phone control unit 3 is connected via this line network 20.
0 and the base station 10 are connected to each other, and the mobile phone control unit 3
Under the control of 0, wireless communication is performed between the base station 10 and the mobile phone 40. When the navigation system 1 is used as a mobile communication system, the mobile phone 40 is connected via the line network 20 by performing wireless communication with the base station 10 corresponding to its own wireless zone 11. Telephone communication can be performed with a normal telephone (not shown) or another mobile telephone (not shown) that wirelessly communicates with another base station 10. Also, when using the current position display function, the mobile phone 40 operates in the presence wireless zone 1 of its own.
1 to communicate with the corresponding base station 10,
A base station identification number (ID code) is received from 0, and from the received base station identification number, the current position of the device itself, that is,
A base station 10 that manages a wireless zone 11 in which the own device exists
The address (address) of is calculated and displayed in characters.

FIG. 2 is a block diagram showing the detailed arrangement of the base station 10. All the base stations 10 have the same configuration, and the signal processing unit 110 and the two-system receiving units 130 and 13 are provided.
1, a transmitter 140, switches 150 and 151, a transmitting / receiving antenna 170, a space diversity antenna 171, and an azimuth measuring antenna (measuring means) 19
0, 191, its motor 160, and the line controller 120
It is equipped with and, and many are arranged relatively densely in stations and telephone booths. Each base station 10 has a base station 10
A unique base station identification number (ID code) for identifying the base station 10 is given to each (signal processing unit 11
0)), and this ID code is used in communication with the mobile phone 40 and the like described later.

The base station 10 is connected to the line network 20 via a line control unit 22, and the line control unit 22 is suitable for processing a signal sent from the line network 20 in a signal processing unit 110. The line network 20 for converting the signal to the signal processing unit 110 and sending the signal to the signal processing unit 110
The data is converted into a form suitable for transmission in the above and transmitted to the line network 20. The switch 150 operates under the control of the signal processing unit 110 (selection instruction) and switches between the two receiving units 130 and 131 and connects them to the signal processing unit 110. Switch 15
2 also operates under the control of the signal processing unit 110, and selectively receives either the normal transmission / reception antennas of the transmission / reception antenna 170 and the space diversity antenna 171 or the direction measurement antennas 190, 191.
Switch to 31 and connect. The receivers 130 and 131 are
The reception signal received by the transmission / reception antenna 170 and the space diversity antenna 171 is subjected to predetermined signal processing and output to the signal processing unit 110 via the switch 150. Also, the reception level of the signal received by the direction measuring antennas 190 and 191 is detected and output to the signal processing unit 110 via the switch 150. The transmission unit 140 performs predetermined signal processing on the transmission signal output from the signal processing unit 110 and outputs the transmission signal to the transmission / reception antenna 170, and the transmission / reception antenna 170 outputs the transmission signal transmitted from the transmission unit 140. To do.

FIG. 3 is a block diagram showing the detailed arrangement of the mobile phone 40. The mobile phone 40 includes a microphone 411, a speaker 412, and a PCM codec 420.
A speech codec 421, a TDMA signal processing unit 430, a digital modulation / demodulation unit 440, an RF processing unit 441, an antenna 442, a ROM 451 and a RAM.
A CPU 450 including 452, an IC card 460, a key operation unit 470, and a display unit 480 are provided. The mobile phone 40 converts the audio signal input from the microphone 411 into a digital signal by the PCM codec 420, compresses the digital signal by the speech codec 421, and outputs the digital signal to the TDMA signal processing unit 430. TDM
The A signal processing unit 430 performs signal processing when a certain frequency is shared by a plurality of mobile phones and the like in a communication system that is shared by time division, and the digital modulation / demodulation unit 440 uses a TDMA.
The signal processing unit 430 modulates the signal-processed digital signal, and the RF processing unit 441 converts the modulated intermediate frequency signal into a high frequency signal and transmits the high frequency signal via the antenna 442. Further, in the mobile phone 40, the RF processing unit 441 converts the high frequency signal received by the antenna 442 into an intermediate frequency signal, and outputs the intermediate frequency signal to the digital modulation / demodulation unit 440. The digital modulation / demodulation unit 440 demodulates the digital signal and outputs it to the TDMA signal processing unit 430. The TDMA signal processing unit 430 performs signal processing on the signal input in time division and outputs it to the speech codec 421. The speech codec 421 expands the digital signal,
Output to the CM codec 420 and the PCM codec 42
0 converts a digital signal into an audio signal and outputs it to the speaker 412. The speaker 412 outputs the input audio signal in a loud voice.

The CPU 450 of the mobile phone 40 is a ROM
The ROM 451 stores a program as the mobile phone 40, information (ID code) about the base station 10, and the like. CPU4
50 uses the RAM 452 as a work memory,
Each unit of the mobile phone 40 is controlled according to the program in the ROM 451 to perform the process as the mobile phone 40, and also to perform the current position calculation process and the notification output process. I
The C card 460 is removable from the mobile phone 40 and is used as an auxiliary when the storage capacity of the ROM 451 is insufficient. The ROM 451 and the IC card 460 store position information (for example, character information such as address and district name) corresponding to the ID code of each base station 10 as an ID code table, and the positions stored in these storage means. Based on the information (ID code), the CPU 450 makes a notification output of the current position as character information. In this way, IC
The card 460 functions as a base station position auxiliary storage unit that stores base station position information. The display unit 480 is, for example, a liquid crystal display device, and is driven and controlled by the CPU 450 to display and output data and character information of a position required for the mobile phone 40. The key operation unit 470 transmits the user's key operation to the CPU 450 so that desired operation control is performed.

Next, the operation will be described with reference to the flowchart showing the procedure for displaying the current position in FIG. When the mobile phone 40, which is a mobile wireless device, makes a position registration or connection request, the nearest base station 10 that controls the wireless zone 11 in which this mobile phone 40 exists responds, and the station identification number of the local station ( ID code) is transmitted (step S1). The mobile phone 40 receives the channel information and the ID code from the nearest base station 10 that responded, and RA
The data is stored in M452 (step S2). When there is a response from a plurality of base stations 10, the base station having the maximum received electric field level is determined to be the nearest base station, and signals are transmitted and received only with this base station. CPU of mobile phone 40
451 is a ROM 451 based on the received ID code.
Alternatively, the ID code table stored in the IC card 460 is searched to obtain corresponding position information (location address information). The ID code table is previously stored in the RAM 4
You may make it transfer to 52. The position information thus obtained is converted into characters using the character data table in the ROM 451 (step S4) and displayed on the display (step S5). FIG. 5 shows a display example of position information.

According to this embodiment, the nearest base station 1
Since the position information (location address information) of 0 is displayed and output as character information, the display device is small enough not to display map information as in the prior art, that is, characters such as numbers, characters, and symbols. The user can be notified of the current position even with the mobile phone 40 having only a display device capable of displaying only information. Further, since a removable IC card 460 is used in addition to the ROM 451 fixedly mounted on the mobile phone 40 as a storage unit for the position information, the storage capacity is expanded, and therefore more detailed position information is needed as necessary. Can be displayed and output.

[0015]

As described above, according to the present invention, each base station transmits a base station identification number assigned to itself to a mobile wireless device located in its own wireless zone, and the mobile wireless device , The correspondence between the base station identification number of each base station and the place number information of the installation location is stored in advance, the place number information corresponding to the received base station identification number is obtained, and the obtained place number information is converted into character information. Since the data is converted and displayed and output, the current position (place name) can be confirmed even with a mobile wireless device of a mobile communication system that can display only character information.

[Brief description of drawings]

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

FIG. 2 is a block diagram of a base station shown in FIG.

3 is a block diagram of the mobile phone shown in FIG. 1. FIG.

FIG. 4 is a flowchart showing a current position display processing procedure.

FIG. 5 is a diagram showing a display example of position information.

[Explanation of symbols]

 1 Navigation System 10 Base Station 20 Line Network 30 Cellular Phone Control Station 40 Cellular Phone 110 Signal Processing Unit 140 Transmitter 430 TDMA Signal Processing Unit 440 Digital Modulation / Demodulation Unit 441 RF Processing Unit 450 CPU 451 ROM 452 RAM 460 IC Card 480 Display Department

Claims (2)

[Claims] 1. A mobile wireless device that communicates with a plurality of wireless base stations that are installed for each of a plurality of wireless zones into which a service area is divided and that are assigned unique base station identification codes. A table storing the correspondence between each of the base station identification codes and the location information of the installation location, and the base station that communicates with the base station that manages the wireless zone in which the self is located among the plurality of base stations The apparatus is provided with means for receiving an identification number, means for searching the table by the received base station identification number to obtain corresponding location address information, and means for converting the obtained location address information into character information and displaying it on a display. A mobile radio with a current position display function. 2. A plurality of wireless base stations installed in each of a plurality of wireless zones into which a service area is divided and assigned unique base station identification codes, and a mobile wireless device for communicating with these wireless base stations. In a navigation system using a mobile communication system, each of the plurality of base stations communicates with the mobile wireless device located in its own wireless zone to transmit the base station identification code assigned to itself, The radio station stores in advance the correspondence between the base station identification code of each of the plurality of base stations and the location information of the installation location, and the base station is controlled by the base station which controls the radio zone in which the radio station is located. When you receive the identification code,
A navigation system characterized by obtaining address information corresponding to this base station identification code, converting the obtained address information into character information, and displaying it on a display.