JP2001326958A - Position retrieval system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide technique of a retrieval system by which positional information of a portable terminal can be retrieved even under propagation environment of radio wave with at least one radio base station and transmission and reception of information between the radio base station and a network are simplified. SOLUTION: As shown in Figure 1, a position retrieval system is approximately composed of a communication control unit 13 in the network 12, a storage device 14 for a center (storage means for the center), the radio base station 3, 4 and 5 connected to the network 12, a position display terminal 15, and the portable terminal 1 connected to the radio base stations 3, 4 and 5. The portable terminal 1 is provided with a memory 2 for the portable terminals (information storage means for the portable terminals), and each of the radio base stations 3, 4 and 5 is provided with the memories 6, 7 and 8 for radio base stations (information storage means for the radio base stations) and adaptive antennas (positional information measuring means) 9, 10 and 11 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position search system, and more particularly to a technology related to a position search system for a portable terminal such as a mobile phone or a PHS used in mobile communication.

[0002]

2. Description of the Related Art Conventionally, in a system for retrieving location information of a mobile terminal, a GPS-only receiver is provided in the mobile terminal,
In a system that receives PS radio waves to obtain position information (for example, Japanese Patent Application Laid-Open No. H11-133135) and a system in which radio base stations are arranged at a high density such as a PHS, radio waves from a plurality of radio base stations are transmitted to portable terminals. And obtains position information from the reception level of the radio wave (for example, JP-A-11-178044, JP-A-11-1780).
45).

[0003]

However, the prior art has the following problems.

When a GPS-only receiver is provided in a portable terminal, the GPS-only receiver becomes large. Also, GP
In order to stably receive the S radio wave, an operation of pointing the antenna is required. In some cases, GPS radio waves cannot be received in tunnels, underground malls, buildings, and the like. Therefore, the convenience is inconvenient, and the GPS-dedicated receiver has been expensive.

[0005] Further, when measurement is performed by a portable terminal without using a GPS-dedicated receiver, the arrival angle cannot be determined because there is no coordinate axis that determines the direction of arrival of radio waves. You will get location information.
For example, when only radio waves from one radio base station can be received, only the distance between the radio base station and the portable terminal can be measured. When only radio waves from two radio base stations can be received, there are at least two points at the same distance from each radio base station, and it is difficult to determine which one. Furthermore, since radio wave propagation between a plurality of wireless base stations and a portable terminal is actually multipath propagation and fading occurs, it is very difficult to measure the location of the own station only from the reception level of the portable terminal. Error easily occurs. In addition, since the database relating to the map information has a system configuration provided separately on the network side, the display terminal on the network side stores the map information separately from the information transmitted from the mobile terminal via the wireless base station. He accessed the database and obtained map information around the wireless base station. As a result, there has been a problem in that the processing related to the transfer of the map information in the network is complicated, and it takes time to display the information on the display terminal on the network side.

The present invention has been made in view of such a problem, and an object of the present invention is to enable location information of a portable terminal to be searched for even in a radio wave propagation environment with at least one radio base station. It is an object of the present invention to provide a technology related to a search system that simplifies transmission and reception of information between a base station and a network.

[0007]

The gist of the present invention described in claim 1 is a position search system for a portable terminal in a network, comprising: one or a plurality of radio base stations connected to the network; The portable terminal connected to the wireless base station via a wireless line, and a position display terminal that displays the position of the portable terminal according to a search for the portable terminal by a searcher, each of the wireless base stations, Wireless base station information storage means for storing base position information capable of specifying the position of the wireless base station by coordinates or a map, and position information for measuring position information of the portable terminal with respect to the base position information of the wireless base station Measuring means, one of the radio base stations, the radio base station, in response to a request from the mobile terminal, the mobile terminal, the position information measured by the radio base station and Sending a serial said base position information stored in the information storage unit for a radio base station, the mobile terminal,
Mobile terminal information storage means for storing the position information and the base position information transmitted from the wireless base station,
The location display terminal inquires of the location information to the portable terminal by a searcher's operation, and controls the location information and the base location information stored in the portable terminal information storage means in a line control in the network. Received through the device,
A position search system displays a position of the wireless base station based on the base position information and a position of the mobile terminal based on the position information. The gist of the present invention according to claim 2, wherein the base position information has map information indicating a position of the wireless base station, and the position display terminal transmits the position to the portable terminal by a searcher's operation. Inquiry of information, receiving the position information and the map information stored in the portable terminal information storage means via a line control device in the network, the position of the wireless base station based on the map information And displaying the position of the portable terminal based on the position information and a map on a map. The gist of the present invention according to claim 3 is a position search system for a mobile terminal in a network, wherein the wireless base station is connected to one or more wireless base stations connected to the network via a wireless line. And the mobile terminal connected to
Each of the wireless base stations is a wireless base station information storage unit that stores base position information capable of specifying the position of the wireless base station by coordinates or a map, and the mobile terminal with respect to the base position information of the wireless base station. Position information measuring means for measuring position information, wherein the portable terminal has a display device for displaying the positions of the wireless base station and the portable terminal on a map, and one of the wireless base stations The wireless base station, based on the inquiry request from the mobile terminal, based on the base position information stored in the wireless base station information storage means,
The mobile terminal creates map information indicating the position of the wireless base station, and when the mobile terminal makes an inquiry request for the position information of the mobile terminal to the wireless base station, the mobile terminal is created by the position information and the wireless base station. Receiving the map information, the display device, the position of the wireless base station based on the map information,
A position search system characterized by displaying a position of the portable terminal based on the position information on a map.
The gist of the present invention according to claim 4 is that the base location information is
A map having latitude information and longitude information corresponding to the position of the radio base station, wherein the network stores map information around the radio base station including the radio base station and searches for the map information Information search means, the position display terminal, based on the received position information, the latitude information and the longitude information, from the map information search means to search the map information including the position of the portable terminal, The position search system according to claim 1, wherein the position of the wireless base station and the position of the portable terminal are displayed on a map. The gist of the present invention according to claim 5, wherein the base position information has identification information for specifying a position of the radio base station preset for each of the radio base stations, and the network includes the radio base station. A map information search means for storing map information around the wireless base station and searching for the map information, wherein the position display terminal is configured to execute the map processing based on the received position information and the identification information. 2. The position search according to claim 1, wherein the map information including the position of the mobile terminal is searched from information search means, and the position of the wireless base station and the position of the mobile terminal are displayed on a map. Exist in the system. The gist of the present invention according to claim 6 is that the network comprises a storage unit for a center connected to the line control device, wherein the portable terminal has the position information stored in the information storage unit for the portable terminal. The base position information is transmitted to the center storage unit at predetermined time intervals, and the center storage unit stores the position information and the base position information received from the mobile terminal,
The position display terminal receives the position information and the base position information from the center storage unit when the mobile terminal does not accept the inquiry about the position information. And 5. The gist of the present invention described in claim 7 is:
The position information measuring means measures distance information from the wireless base station to the portable terminal based on received power from the portable terminal or transmission power control information for the portable terminal, and a radio wave arriving from the portable terminal. 7. Arrival angle information is measured based on the angle of arrival of the mobile terminal, and the position information of the portable terminal includes the measured distance information and the arrival angle information. Exist in the location search system. The gist of the present invention described in claim 8 is:
The radio base station information storage means of each of the radio base stations uses a GPS receiver to generate the map information around the radio base station, and to specify the position of the radio base station itself. 8. The radio base station information storage means generates and stores the map information based on information for specifying the position of the radio base station itself. In the position search system described in (1).

[0008]

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

(Embodiment 1) FIG. 1 shows Embodiment 1 of the present invention.
1 is a diagram showing a configuration of a position search system according to FIG. As shown in FIG. 1, the position search system according to the present embodiment
A line controller 13 in the network 12, a storage device for the center (storage means for the center) 14,
Base stations 3, 4, 5 connected to the
5 and a mobile terminal 1 connected to the wireless base stations 3, 4, and 5 via a wireless line. The mobile terminal 1 includes a mobile terminal memory (mobile terminal information storage unit) 2, The base stations 3, 4, and 5 are provided with memories for wireless base stations (information storage means for wireless base stations) 6, 7, and 8, and adaptive antennas (position information measuring means) 9, 10, and 11, respectively.

The portable terminal 1 is used when it is within a range where radio waves can reach the radio base stations 3, 4, and 5. A radio base station memory 6 provided in each of the radio base stations 3, 4, and 5;
Reference numerals 7 and 8 store base position information for specifying the positions of the respective radio base stations 3, 4, and 5 using maps and coordinates.

In the first embodiment, each base position information includes map information around the wireless base stations 3, 4, and 5 indicating the positions of the wireless base stations 3, 4, and 5. .

Each of the radio base stations 3, 4, and 5 has adaptive antennas (positional information measuring means) 9, 10, and 11, respectively, for receiving incoming waves from the portable terminal 1 with the adaptive antennas 9, 10, and 11, respectively. The distance to the mobile terminal 1 and the angle of arrival from each of the mobile terminals 1 are measured, and the position information having the distance information and the angle of arrival information to the mobile terminal 1 and the positions of the wireless base stations 3, 4, and 5 are measured. Is transmitted to the mobile terminal 1.

The position information and the map information stored in the portable terminal memory 2 of the portable terminal 1 are transmitted to the line controller 13 in the network 12 via one of the radio base stations 3, 4, and 5. It is sent and stored in the storage device 14 for the center. Mobile terminal memory 2 via network 12
Is received by the position display terminal 15.

Next, the operation of the position search system according to the first embodiment will be described. Hereinafter, the wireless base station 3,
The radio base station 3 among 4 and 5 will be described as a general example.

The portable terminal 1 accesses the surrounding radio base station 3 to know the position of the portable terminal 1 itself.

The radio base station 3 includes distance information between the mobile terminal 1 and the radio base station 3 corresponding to reception power of an incoming wave from the mobile terminal 1 or transmission power control information from the radio base station 3, and an adaptive antenna 9. The mobile terminal 1 measures the arrival angle information from the mobile terminal 1 to the wireless base station 3 based on the directivity control information, and transmits the position information including the distance information and the arrival angle information and the map information to the mobile terminal 1.

The portable terminal 1 receives the position information and the map information from the radio base station 3 and stores them in the portable terminal memory 2.

The location information and map information stored in the portable terminal memory 2 are periodically sent to and stored in the center storage device 14 in the network 12, or the location information is searched for by a searcher. Sent to the position display terminal 15 when a call is made from the display terminal 15 to the portable terminal 1.

When the position of the portable terminal 1 is searched by the searcher from the position display terminal 15 and the power of the portable terminal 1 is turned on, the position information stored in the portable terminal memory 2 of the portable terminal 1 If the power of the portable terminal 1 is not turned on, the position information and the map information stored in the center storage device 14 in the network 12 are sent to the position display terminal 15 and displayed.

Further, since the portable terminal 1 has a function (display device) for displaying position information and map information, the position of the portable terminal 1 itself can be displayed. In this case, if the mobile terminal 1 accesses the surrounding wireless base station 3, the map information and the position information of the mobile terminal 1 can be received from the wireless base station 3 without connecting to a line in the network 12.

In order for the radio base station 3 to store map information around the radio base station 3 that can identify the radio base station 3, a system construction may be used in addition to the method of downloading the map information using the network 12. Sometimes, using a GPS receiver, map information obtained by measuring the position of the wireless base station 3 itself is stored in the wireless base station 3 as it is. The wireless base station 3 stores the position information of the wireless base station 3 together with the surrounding map information in the wireless base station 3 without having information corresponding to the position on the map of the wireless base station 3 and the installation position. be able to.

Since the position search system according to the first embodiment is configured as described above, the following effects can be obtained.

By storing map information around the wireless base station 3 in the wireless base station 3 and transmitting the map information to the position display terminal 15, a process of requesting a map search on the network 12 can be omitted. .

The position information and the map information stored in the portable terminal memory 2 are periodically transmitted to the center storage device 14 so that the portable terminal 1 is not turned on or no radio wave arrives. In this case, it is possible to obtain position information and map information up to a certain point.

Since the wireless base station 3 measures the position information of the portable terminal 1, more accurate position information can be obtained by using not only the distance information but also the arrival angle information.

The position information of the portable terminal 1 itself can be obtained only by the access from the portable terminal 1 to the radio base station 3, and the access to the network 12 is not required.

By using the GPS receiver, the radio base station 3 can store map information including surrounding map information without knowing the correspondence between the position of the radio base station 3 on the map and the installation position.

(Embodiment 2) FIG. 2 shows Embodiment 2 of the present invention.
1 is a diagram showing a configuration of a position search system according to FIG. As shown in FIG. 2, the position search system according to the second embodiment
In addition to the configuration similar to that of the first embodiment, a map search memory (map information search means) 16 is directly or indirectly connected to a position display terminal 15 used by a searcher.

Each of the base station memories 6, 7, and 8 provided in each of the base stations 3, 4, and 5 stores latitude information that can specify the position of each of the base stations 3, 4, and 5. And base position information having the longitude information and the longitude information.

Next, the operation of the position search system according to the second embodiment will be described. The wireless base station 3 will be described as a general example of the wireless base stations 3, 4, and 5.

The portable terminal 1 accesses the surrounding radio base station 3 to obtain the position specifying information of the portable terminal 1 itself.

The radio base station 3 includes distance information between the mobile terminal 1 and the radio base station 3 corresponding to reception power of an incoming wave from the mobile terminal 1 or transmission power control information from the radio base station 3, and an adaptive antenna 9. Angle of arrival from the mobile terminal 1 to the wireless base station 3 based on the directivity control information of the mobile terminal 1 and transmits the position information including the distance information and the angle of arrival information, and the latitude information and the longitude information to the mobile terminal 1. .

The portable terminal 1 receives the position information, the latitude information and the longitude information from the radio base station 3 and stores them in the portable terminal memory 2.

The position information, the latitude information and the longitude information of the portable terminal memory 2 are periodically sent to and stored in the center storage device 14 in the network 12, or the portable terminal 1 Is transmitted to the position display terminal 15 when a call is made from the position display terminal 15 to the portable terminal 1 for the position search.

The position display terminal 15 stores the map information including the portable terminal 1 and the radio base station 3 on the basis of the sent position information, the latitude information and the longitude information, into a map search memory 16.
And the location information of the mobile terminal 1 is displayed together with the searched map information.

Further, instead of the latitude information and the longitude information of the radio base station 3, base position information having identification information set for each of the radio base stations 3, 4, and 5 can be used. In the map search memory 16, identification information is set for each of the wireless base stations 3, 4, and 5, and map information around each of the wireless base stations 3, 4, and 5 corresponding to each of the identification information is stored. Remember.

The map search memory 16 is stored in the position display terminal 15.
When the connection is made to the line control device 13 in the network 12 without directly connecting to the base station, the position information and the base position information are transmitted to the position display terminal 15 from the line control device 13 when the base position information is transmitted. It is transmitted together with the map information around the wireless base station 3 retrieved from the map retrieval memory 16 based on the information.

Since the position search system according to the second embodiment is configured as described above, it has the following effects in addition to the effects of the first embodiment.

The position display terminal 15 receives the position information and the base position information transmitted from the wireless base station 3 to the portable terminal 1, and directly reads the map information from the map search memory 16 based on the received base position information. The search eliminates the need for a map search on the network 12 side.

Further, the base position information stored in the radio base station 3 is used as the identification information set for each radio base station 3 instead of using the latitude information and the longitude information. The coordinates of the position information of the terminal 1 can be easily determined.

Note that, in the present embodiment, the present invention is not limited to this, and can be applied to a technique relating to a position search system suitable for applying the present invention.

Further, the number, position, shape, etc. of the above-mentioned constituent members are not limited to the above-mentioned embodiment, but can be set to a suitable number, position, shape, etc. for carrying out the present invention.

In the drawings, the same components are denoted by the same reference numerals.

[0044]

Since the present invention is configured as described above, the following effects can be obtained.

The position display terminal uses the map information around the wireless base station transmitted to the portable terminal 1, thereby making it unnecessary to search the map information on the network side and reducing the burden on the network side.

The storage device for the center periodically receives, from the mobile terminal, information that can specify the position of the mobile terminal,
The searcher using the position display terminal can obtain the position information of the mobile terminal 1 halfway even when transmission and reception of radio waves with the mobile terminal are not possible.

By measuring not only the distance information between the portable terminal and the radio base station but also the arrival angle information, the position of the portable terminal can be specified more accurately.

Since the portable terminal has the display device, position information can be obtained only by accessing the wireless base station from the portable terminal, and transmission / reception of information on the network side becomes unnecessary, and the burden on the network side is reduced. .

Using the information from the GPS receiver without using the correspondence information between the position of the wireless base station on the map and the installation position, the position information of the wireless base station including the surrounding map information can be easily stored. it can.

The location display terminal can use the base location information transmitted from the radio base station to the portable terminal to search the map information from the map search memory without transmitting / receiving information to / from the network side. The burden is reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a position search system according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing a configuration of a position search system according to Embodiment 2 of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mobile terminal 2 Memory for mobile terminals (information storage means for mobile terminals) 3, 4, 5 Radio base station 6, 7, 8 Memory for radio base stations (information storage means for radio base stations) 9, 10, 11 Adaptive antenna (Position information measuring means) 12 Network 13 Line control device 14 Center storage device (Center storage means) 15 Position display terminal 16 Map search memory (Map information search means)

Claims (8)

[Claims] 1. A location search system for a mobile terminal in a network, comprising: one or more wireless base stations connected to the network; and the mobile phone connected to the wireless base station via a wireless line. A terminal, and a position display terminal for displaying a position of the mobile terminal in accordance with a search for the mobile terminal by a searcher, wherein each of the wireless base stations specifies a position of the wireless base station by coordinates or a map. Wireless base station information storage means for storing position information, and position information measuring means for measuring position information of the portable terminal with respect to the base position information of the wireless base station, one of the wireless base stations In response to a request from the mobile terminal, the wireless base station stores, in the mobile terminal, the location information measured by the wireless base station and the location information stored in the wireless base station information storage unit. The portable terminal has information storage means for portable terminals that stores the position information and the base position information transmitted from the wireless base station, and the position display terminal performs a search. Inquiring of the location information to the mobile terminal by the operation of the person, receiving the location information and the base location information stored in the mobile terminal information storage means via a line control device in the network,
A position search system displaying a position of the wireless base station based on the base position information and a position of the mobile terminal based on the position information. 2. The base position information includes map information indicating a position of the wireless base station, and the position display terminal inquires the mobile terminal of the position information by a searcher's operation; The position information and the map information stored in the portable terminal information storage unit are received via a line control device in the network, and the position of the wireless base station based on the map information and the position information The position search system according to claim 1, wherein the position is displayed on a map based on the position of the mobile terminal based on the position. 3. A mobile terminal location search system in a network, comprising: one or more wireless base stations connected to the network; and the mobile terminal connected to the wireless base station via a wireless line. A terminal; and each of the radio base stations includes radio base station information storage means for storing base position information capable of specifying the position of the radio base station by coordinates and a map; and the base position information of the radio base station. And position information measuring means for measuring position information of the portable terminal with respect to the mobile terminal. The portable terminal has a display device for displaying the positions of the wireless base station and the portable terminal on a map, One of the wireless base stations, based on the base location information stored in the wireless base station information storage means in response to an inquiry request from the mobile terminal, Creating the indicated map information, wherein the mobile terminal receives the location information and the map information created by the wireless base station when the mobile terminal makes an inquiry request for the location information of the mobile terminal to the wireless base station The display device displays a position of the wireless base station based on the map information and a position of the mobile terminal based on the position information on a map. 4. The base position information has latitude information and longitude information corresponding to the position of the wireless base station, and the network is configured to store map information around the wireless base station including the wireless base station. A map information search unit that performs storage and a search for the map information, wherein the position display terminal receives the position information, the latitude information, and the longitude information based on the received position information, Searching the map information including the position,
The position search system according to claim 1, wherein the position of the wireless base station and the position of the mobile terminal are displayed on a map. 5. The wireless communication system according to claim 5, wherein the base position information includes identification information for specifying a position of the wireless base station preset for each wireless base station, and the network includes the wireless base station including the wireless base station. Map information search means for storing map information around the area and searching for the map information. The position display terminal is configured to receive the map information from the map information search means based on the received position information and the identification information. The position search system according to claim 1, wherein the map information including the position of the terminal is searched, and the position of the wireless base station and the position of the mobile terminal are displayed on a map. 6. The network includes a storage unit for a center connected to the line control device, wherein the mobile terminal stores the location information and the base location information stored in the information storage unit for the mobile terminal. The center storage unit transmits the location information and the base location information received from the mobile terminal at predetermined time intervals to the center storage unit, and the location display terminal is The location search according to any one of claims 1, 2, 4, and 5, wherein when the inquiry about the location information is not received, the location information and the base location information are received from the center storage unit. system. 7. The position information measuring means measures distance information from the radio base station to the portable terminal based on received power from the portable terminal or transmission power control information for the portable terminal, and The angle of arrival information is measured based on the angle of arrival of a radio wave arriving from the terminal, wherein the position information of the portable terminal includes the measured distance information and the angle of arrival information. The position search system according to any of the above. 8. The radio base station information storage means of each of the radio base stations uses a GPS receiver to generate the map information around the radio base station, and stores the map information of the radio base station itself. The information for specifying a position is received, and the information storage unit for the radio base station generates and stores the map information based on the information for specifying the position of the radio base station itself. A position search system according to any one of claims 1 to 7.