JPH05191339A - Map information retrieval system for mobile object - Google Patents

Abstract

PURPOSE:To allow a mobile object terminal equipment itself to grasp a current location on a map by acquiring the current location information through the communication from the mobile object terminal equipment to a mobile body exchange and displaying the information on a screen as map information. CONSTITUTION:When an outline map of a current location is not in existence, mobile object terminal equipments 407a-407c retrieve the system at the side of a radio line control station 405 and displays an outline map and a detailed map onto a screen of a display means. Moreover, when the outline map is already in existence, it is displayed and when the detailed map is required, the system of the control station 405 is retrieved. When the system retrieval is implemented, map information is outputted to a file of the terminal equipments 407a-407c through the selection. The terminal equipments 407a-407c themselves recognize the current location by making communication from the terminal equipments 407a-407c to a mobile object exchange 404 to acquire the current location information and displaying the information on the screen as the map information in this way. Furthermore, since the up-to-date map is always obtained, it is not required to replace the map.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio service, and more particularly to a mobile map information retrieval system for realizing a current location information providing service by utilizing a radio line control function.

[0002]

2. Description of the Related Art Conventional mobile radio services include radio services represented by car phones, ship phones, mobile phones, etc. (hereinafter referred to as mobile terminals). Then, the communication with the mobile terminal is performed via the wireless line control station as shown in the example of the car telephone of FIG.

FIG. 4, which is an explanatory view showing an image of communication with a conventional car telephone, will be described below. In FIG. 4, 401 is a subscriber telephone, 402 is a local exchange, and 40
3 is a long-distance exchange office, 404 is a car telephone exchange, 405 is a radio network controller, 406a to 406f are radio base stations, 4
Reference numerals 07a to 407c are mobile terminals.

Next, the operation will be described. Communication between the general telephone and the mobile terminal 407 is performed by connecting the radio base station 406, the radio network controller 405, the car telephone exchange 404 and the general telephone network. In the wireless base station 406, one wireless zone is narrow with a radius of several Km, and several wireless zones are gathered to form a wide service providing area. The wireless line control station 405 communicates with the mobile terminal at regular intervals and always knows its position. The wireless base station 406 is controlled so that communication is not interrupted even when the mobile terminal moves.

[0005]

In this conventional image of communication with a car telephone, the position of the mobile terminal can be known from the radio network controller side, but when the mobile terminal side is in a strange land, There was a problem that I could not know which area I was in.

[0006]

A mobile body map information retrieval system of the present invention is an information acquisition means for acquiring current location information held by a radio network controller from a mobile terminal, and a current location map information based on the current location information. And display means for displaying on the screen instead of the above, and updating means for updating the data on the mobile terminal side by acquiring the latest map information from the system on the radio network controller side.

[0007]

In the present invention, the current location information is acquired by communicating from the mobile terminal to the mobile switching center and displayed on the screen as map information, and the map information is always displayed by the radio network controller. After updating to the latest state, the mobile terminal side obtains the information by issuing a request to the radio network controller and updates its own system.

[0008]

First, the outline of the present invention will be described before describing the embodiments. The radio network controller always keeps track of the latest position of mobile terminals by code system. The present invention confirms this position (hereinafter referred to as a current location code) by inquiring from a mobile terminal to a system (hereinafter referred to as a center) on the radio network controller side, and obtains map information of the present location. You can refer to it on the screen. This map information is stored in both the center and the mobile terminal, but the center covers the entire area, whereas the mobile terminal is limited to the main mobile area. Then, the search from the center is performed only when there is no information on the mobile terminal side.

The map information is divided into a schematic diagram and a detailed diagram, and the schematic diagram is assumed to be almost complete on the mobile terminal side. The contents of the schematic and detailed drawings are as follows. The schematic diagram is for each prefecture, and the detailed diagram is for each municipality. When the center search is performed because the mobile terminal has no information, the information can be written in the file of the mobile terminal. Further, since the center is constantly updated with the latest information, even if the mobile terminal already has the information, the update can be performed based on the information of the center.

The present invention is carried out as follows. FIG. 1 is a flowchart showing an embodiment of a mobile body map information search system according to the present invention. First, the present location is confirmed (step 101), and it is checked whether the outline map exists in the mobile terminal (steps 102 to 104).
If there is no outline map, the center is searched and the outline map and the detailed map are displayed (steps 105 to 11).
6). Next, if a schematic map already exists, it is displayed (steps 117 and 118), and if a detailed map is required, center search is performed (steps 119 to 123).
When the center is searched, the map information is output to the file of the mobile terminal by selection (step 124).
~ 126). In FIG. 1, the partition codes in step 106 are schematic, and the partition codes in steps 112 and 122 are detailed.

As described above, according to the present invention, the information acquisition means for acquiring the current location information held by the radio network controller from the mobile terminal, and the display for displaying the current location based on the current location information on the screen in place of the map information. Means and updating means for acquiring the latest map information from the system on the side of the radio network controller and updating the data on the mobile terminal side, so that not only the radio network controller but also the mobile terminal itself knows the current location. It was made possible. And since the latest map can always be obtained, there is no need to replace the map.

FIG. 2 is a flow chart of the present location confirmation process used for explaining the operation of FIG. 1, where (a) shows the mobile terminal software and (b) shows the center software. In steps 201 to 207 in FIG. 2, predetermined processing is executed.

FIG. 3 is a flow chart of the center search process used for explaining the operation of FIG. 1, where (a) shows the mobile terminal software and (b) shows the center software. In each of steps 301 to 312 in FIG. 3, a predetermined process is executed.

[0014]

As described above, according to the present invention, by communicating from the mobile terminal to the mobile switching system,
Get the current location information and display it on the screen as map information,
In addition, the center constantly updates the map information, and the mobile terminal side requests the center to acquire the information and update its own system. This has an effect that the location of the terminal itself can be grasped on the map. Moreover, since the map is always updated to the latest state, there is an effect that more accurate information can be obtained.

[Brief description of drawings]

FIG. 1 is a flowchart showing an embodiment of a mobile body map information search system according to the present invention.

FIG. 2 is a flowchart of a current location confirmation process provided for explaining the operation of FIG.

FIG. 3 is a flowchart of a center search process used for explaining the operation of FIG.

FIG. 4 is an explanatory diagram showing an image of communication with a conventional car telephone.

[Explanation of symbols]

 101 to 127 steps 201 to 207 steps 301 to 312 steps 404 car telephone exchange 405 wireless line control stations 406a to 406f wireless base stations 407a to 407c mobile terminals

Claims (1)

[Claims] 1. An information acquisition unit for acquiring current position information held by a wireless line control station from a mobile terminal, a display unit for replacing the current position based on the current position information with map information and displaying it on a screen, and the wireless line. A mobile body map information search system comprising update means for acquiring the latest map information from the control station side system and updating the mobile terminal side data.