JPH10271554A - Wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify system constitution and a system operation by making a mobile station measure the direction of a reception electric field while measuring the reception electric field strength of radio waves from a base station and calculate the position information of the present station based on the result. SOLUTION: A CPU 40 controls an antenna driving part 32 based on signals from a reception level detection part 34 and drives a directional antenna 31 so as to be turned to the direction of the strong electric field strength. Electric field strength data stored in a ROM 41 are referred to and the position of the mobile station is calculated. Thus, one base station on this system is sufficient and the system constitution and the system operation are simplified. Also, in the mobile station, delay time is measured from the transmission/reception timing of the radio waves to/from the base station and the distance of the mobile station and the base station is more accurately measured based on the measured result. They can be all performed on a base station side or calculated by transferring a partial measured result as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system, and more particularly, to a wireless communication system for determining a position of a mobile station through wireless communication.

[0002]

2. Description of the Related Art Conventionally, JP-A-7-231473,
JP-A-38948, JP-A-8-107583,
As disclosed in Japanese Patent No. 70481, the reception level of radio waves between a plurality of base stations and a mobile station is measured by the mobile station or the base station, and the measurement result is monitored by the mobile station, the base station, or the base station. Wireless communication systems that determine the position of a mobile station by processing at the station have been proposed.

With this proposal as Conventional Example 1, a specific method for determining the position of a mobile station will be described in further detail with reference to Japanese Patent Application Laid-Open No. 7-231473. FIG.
1 is a configuration diagram illustrating a conventional wireless communication system according to Japanese Patent Publication No. 231473. As shown in FIG. 43, this wireless communication system includes a plurality of base stations B1 to B3 for transmitting radio waves.
And mobile stations 11M and 11H that receive radio waves from the base stations B1, B2 or B3, measure the electric field strength thereof, and obtain the position information of the own station from the electric field strength.

[0004] L10, L20, and L30 transmit radio waves transmitted from the base stations B1, B2, and B3 to the mobile stations 11 respectively.
3 shows an isoelectric field curve of a reception electric field level when M and 11H receive. These isoelectric curves L10, L20, L30
Is that the electric field strength increases closer to the base station.

Next, the operation will be described. Mobile station 1
At 1M or 11H, the electric field strength of each of the base stations B1, B2, and B3 is compared with a database prepared in advance, and thereby the position of the own station is obtained. The operation principle is as follows. (1) According to the received electric field from the base station B1, the mobile station 11
The area where M may exist is determined to be an area on the isoelectric curve L10. (2) Similarly, the area at each of the base stations B2 and B3 is determined. (3) The overlapping part of the determined area obtained in each of the above items (1) and (2) is obtained as a position where 11M exists.

[0006] Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 7-226976, a delay time is measured using a UW (unique word) signal, and position information of a mobile station is obtained based on the measurement result. Communication systems have been proposed. With this proposal as Conventional Example 2, the specific method will be described in detail below.

FIG. 44 is a transmission / reception timing chart at a certain distance between a portable terminal and a base station in a conventional wireless communication system disclosed in Japanese Patent Application Laid-Open No. Hei 7-226976, for example. FIG. 3A shows transmission / reception data of the base station, and FIG. 3B shows transmission / reception data of the mobile terminal. FIG. 2C shows the transmission timing of the UW signal of the mobile terminal, and FIG. 2D shows the reception timing of the UW signal of the mobile terminal. Also, FIG.
Shows a delay time Δt of the transmission / reception timing of the UW signal in the portable terminal.

In FIGS. 44 (A) and 44 (B), a delay time occurs in transmission from the portable terminal to the base station or in transmission from the base station to the portable terminal in accordance with the distance between the portable terminal and the base station. . Further, in the mobile terminal, a delay time occurs between receiving data from the base station and transmitting data to the base station. Therefore, in the portable terminal, the reception timing of the UW signal (FIG. 44 (C)) and the transmission timing (FIG.
4 (D)), the delay time Δt between the mobile terminal and the base station can be measured, so that the distance between the mobile terminal and the base station can be obtained based on the delay time Δt.

[0009]

According to the above-mentioned prior art example 1, a plurality of base stations are used to determine the position of a mobile station, as typified by JP-A-7-231473. Since an operation for measuring the electric field strength is required for each base station, there is a problem that the system configuration is large-scale and the system operation is complicated.

[0010] According to the above-mentioned conventional example 2, the position information of the mobile station is obtained by using a special signal such as a UW signal. It has to be added, and there is a problem that the load on the system operation increases. Note that application of the UW signal may cause a problem such as communication disconnection.

According to the present invention, in order to solve the above-described problems in the conventional example, it is possible to simplify and reliably determine the position of a mobile station by simplifying the system configuration and system operation or reducing the load on the system operation. A second object is to obtain a possible wireless communication system.

[0012]

Means for Solving the Problems The above-mentioned problems are solved,
In order to achieve the object, a radio communication system according to the present invention performs radio communication between a base station and a mobile station by transmitting radio waves from the base station to the mobile station, and controls the mobile station and the base station. A mobile station, receiving means for receiving a radio wave from a base station, measuring means for measuring the direction of the received electric field while measuring the electric field intensity received by the receiving means, and measuring means And calculating means for calculating the position information of the own station based on the measurement result.

According to this invention, the mobile station measures the direction of the received electric field while measuring the electric field strength from the base station, and calculates the position information of the mobile station based on the measurement result. Since only one base station is required in the system, which simplifies the system configuration and system operation, it is possible for the mobile station to easily and reliably determine its own position.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station by transmitting radio waves from the mobile station to the base station, and controls the mobile station and the base station by a control device. In a wireless communication system, the base station has receiving means for receiving a radio wave from the mobile station, and measuring means for measuring the direction of the received electric field while measuring the electric field strength received by the receiving means. It is characterized by.

According to the present invention, since the base station measures the direction of the received electric field while measuring the electric field strength from the mobile station, only one base station is required in the system. The configuration and system operation can be simplified.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station by transmitting radio waves from the base station to the mobile station, and controls the mobile station and the base station by a control device. In a wireless communication system, a mobile station receives a radio wave from a base station, measuring means for measuring the direction of the received electric field while measuring the electric field strength received by the receiving means, and measuring the measuring means. Transmitting means for transmitting the result to the base station.

According to the present invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength from the base station, and transmits the measurement result to the base station. Only one station is required,
The system configuration and operation can be simplified.

In the radio communication system according to the next invention, one of the base station and the control device calculates the position information of the mobile station based on the measurement result (including the electric field strength) of the measuring means possessed by the base station. It is characterized by doing.

According to the present invention, the position information of the mobile station is calculated by one of the base station and the control device based on the measurement result (including the electric field strength) held by the base station. Further, the position of the mobile station can be easily and reliably obtained under the condition that the system operation is simplified.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station by transmitting radio waves from the mobile station to the base station, and controls the mobile station and the base station by a control device. In a wireless communication system, a base station receives a radio wave from a mobile station, a measuring unit that measures the direction of the received electric field while measuring the electric field strength received by the receiving unit, Transmitting means for transmitting the result to the mobile station, wherein the mobile station receives the measurement result transmitted from the base station by the transmitting means, and calculates the position information of the own station based on the measurement result. It is characterized by.

According to the present invention, the base station measures the azimuth of the received electric field while measuring the electric field strength from the mobile station, transmits the measurement result to the mobile station, and transmits the measurement result to the mobile station. The position information of the own station is calculated based on the base station, so that only one base station is required in the system, which simplifies the system configuration and system operation. It can be determined easily and reliably.

A wireless communication system according to the next invention performs wireless communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. A transmitting and receiving means for receiving a radio wave transmitted from each base station after transmitting the radio wave to each base station, a measuring means for measuring an interval between transmission and reception timings of the radio wave by the transmitting and receiving means as a delay time, and Calculating means for calculating the position information of the own station, wherein each base station transmits a radio wave to the mobile station after receiving the radio wave by the transmitting / receiving means.

According to the present invention, the mobile station measures the delay time from the transmission / reception timing of the radio wave to the base station and calculates the position of the mobile station based on the measurement result. A special signal such as a unique word is not required for measurement, which can reduce the load on system operation and prevent problems such as communication disconnection, so that the mobile station can easily and reliably locate its own station. It is possible to ask.

A radio communication system according to the next invention performs radio communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. A transmission / reception unit that receives a radio wave transmitted back from the mobile station after transmitting a radio wave to the mobile station, and a measurement unit that measures an interval between transmission / reception timings of the radio wave by the transmission / reception unit as a delay time, wherein the mobile station has: After receiving the radio wave from the base station by the transmission / reception means, the radio wave is transmitted back to each base station.

According to the present invention, in each base station, the delay time is measured from the transmission / reception timing of the radio wave to the mobile station, so that a special signal such as a unique word is used in each base station for measuring the delay time. This eliminates the necessity, thereby reducing the load on system operation and preventing problems such as communication disconnection.

A wireless communication system according to the next invention performs wireless communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. Transmitting and receiving means for receiving a radio wave sent back from each base station after transmitting the radio wave to each base station, measuring means for measuring an interval between transmission and reception timings of the radio wave by the transmitting and receiving means as a delay time, and a plurality of measurement results of the measuring means. Transmitting means for transmitting to any one of the base stations, wherein each base station transmits a radio wave to the mobile station after receiving the radio wave by the transmitting and receiving means.

According to the present invention, the mobile station measures the delay time from the transmission / reception timing of the radio wave to the base station, and transmits the measurement result to any one of the plurality of base stations. In this case, a special signal such as a unique word is not required for measuring the delay time, whereby the load on the system operation can be reduced and problems such as communication disconnection can be prevented.

In the radio communication system according to the next invention, one of the base station and the control device calculates the position information of the mobile station based on the measurement result (including the delay time) of the measuring means possessed by the base station. It is characterized by doing.

According to the present invention, the position information of the mobile station is calculated based on the measurement result (including the delay time) held by the base station by one of the base station and the control device. Further, the position of the mobile station can be easily and reliably obtained under the condition that the system operation is simplified.

A wireless communication system according to the next invention performs wireless communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. A transmission / reception unit that receives a radio wave transmitted back from the mobile station after transmitting a radio wave to the mobile station, and a measurement unit that measures an interval of transmission / reception timing of the radio wave by the transmission / reception unit as a delay time, and the control device includes: Collection means for collecting the measurement results of the measurement means by the base station, and transfer means for transferring the measurement results collected by the collection means to the mobile station through a representative base station of a plurality of base stations, Return means for transmitting radio waves to each base station after receiving radio waves from each base station by the transmission / reception means, and measurement results transferred from the representative base station by the transfer means of the control device Receiving and characterized by having a calculating means for calculating the position information of the own station based on the measurement result.

According to the present invention, each base station measures the delay time from the transmission / reception timing of radio waves to the mobile station, the control device collects the measurement results of each base station, and collects all the measurement results in the representative base station. To the mobile station, and the mobile station calculates its own location information based on all the measurement results, so that each base station does not need a special signal such as a unique word for delay time measurement. Thus, the load on the system operation can be reduced and problems such as communication disconnection can be prevented, so that the mobile station itself can easily and reliably find its own position.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. The base station has a measuring unit for measuring as time, and a calculating unit for calculating position information of the own station based on a measurement result of the measuring unit, and the base station transmits a radio wave to the mobile station after receiving the radio wave by the transmitting and receiving unit. It is characterized by the following.

According to the present invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the base station, and also measures the delay time from the transmission and reception timing of the radio wave. Since the position of the own station is calculated based on the base station, only one base station is required in the system, which simplifies the system configuration and system operation, and also allows the mobile station to use a unique word for delay time measurement. This eliminates the need for special signals, such as reducing the load on system operation and preventing problems such as communication disconnections, so that the mobile station can easily and reliably determine its own position. .

A wireless communication system according to the next invention performs wireless communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the mobile station, and measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. Measuring means for measuring time, wherein the mobile station transmits a radio wave to the base station after receiving the radio wave from the base station by the transmission / reception means.

According to the present invention, the base station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and measures the delay time from the transmission and reception timing of radio waves. The system requires only one base station, which simplifies the system configuration and system operation, and eliminates the need for a special signal such as a unique word for measuring the delay time at the base station. It is possible to reduce the above load and prevent problems such as disconnection of communication.

A wireless communication system according to the next invention performs wireless communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. Measuring means for measuring time, and transmitting means for transmitting a measurement result of the measuring means to the base station, wherein the base station transmits a radio wave to the mobile station after receiving the radio wave by the transmitting and receiving means. .

According to the present invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the base station, and also measures the delay time from the transmission and reception timing of radio waves. Since transmission is performed to the base station, only one base station is required in the system, which simplifies the system configuration and system operation, and also enables the mobile station to use a special word such as a unique word for delay time measurement. This eliminates the need for a signal, thereby reducing the load on system operation and preventing problems such as communication disconnection.

[0038] In the radio communication system according to the next invention, one of the base station and the control device determines whether the base station has a measurement result (including the azimuth of the highest electric field strength and the delay time) of the measuring means. The mobile station is characterized by calculating position information of the mobile station.

According to the present invention, the position information of the mobile station is calculated by one of the base station and the control device based on the measurement result (including the azimuth of the highest electric field strength and the delay time) held by the base station. As a result, the system configuration and operation can be simplified, and the position of the mobile station can be easily and reliably obtained under conditions that reduce the load on system operation and prevent problems such as communication interruption. It is possible.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the mobile station, and measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. Measuring means for measuring time, the control device comprising: collecting means for collecting measurement results of the measuring means by the base station; and transfer means for transferring the measurement results collected by the collecting means to the mobile station through the base station. The mobile station receives a radio wave from the base station by the transmission / reception unit, and then returns a radio wave to the base station, and controls the mobile station from the base station. Receiving a measurement result which has been transferred by the transfer means of the apparatus, characterized in that had, a calculation means for calculating the position information of the own station based on the measurement result.

According to the present invention, the base station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and also measures the delay time from the transmission and reception timing of radio waves. The measurement result of the base station is collected, the measurement result is transferred to the mobile station through the base station, and the mobile station calculates the position information of the own station based on the measurement result. This simplifies the system configuration and system operation, and eliminates the need for a special signal such as a unique word for measuring the delay time at the base station, thereby reducing the load on the system operation and Since a trouble such as communication disconnection can be prevented, the position of the mobile station itself can be easily and reliably obtained.

A wireless communication system according to the next invention performs wireless communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. A transmitting and receiving means for receiving a radio wave transmitted from each base station after transmitting the radio wave to each base station, a measuring means for measuring an interval between transmission and reception timings of the radio wave by the transmitting and receiving means as a delay time, and Calculating means for calculating position information of the own station, each base station receives a radio wave by the transmitting / receiving means, and then returns the radio wave to the mobile station with a delay time according to the electric field strength at the time of receiving the radio wave. It is characterized by the following.

According to the present invention, the mobile station measures the delay time from the transmission / reception timing of the radio wave to the base station, calculates the position of the own station based on the measurement result, and in each base station, transmits the radio wave from the mobile station to the base station. After receiving the signal, the radio wave is sent back to the mobile station with a delay time according to the electric field strength at the time of reception. , The delay time of the base station can be easily measured, and the restriction on the zone radius of the base station can be eliminated.

A radio communication system according to the next invention performs radio communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. A transmission / reception unit that receives a radio wave transmitted back from the mobile station after transmitting a radio wave to the mobile station, and a measurement unit that measures an interval between transmission / reception timings of the radio wave by the transmission / reception unit as a delay time, wherein the mobile station has: After receiving the radio wave from the base station by the transmission / reception means, the radio wave is transmitted back to each base station with a delay time corresponding to the electric field strength at the time of the reception.

According to the present invention, at each base station, the delay time is measured from the transmission / reception timing of the radio wave to the mobile station, and after the mobile station receives the radio wave from the base station,
Since the radio wave is sent back to the mobile station with the delay time according to the electric field strength at the time of the reception, the delay time can be taken in a large unit in the system, thereby measuring the delay time of the mobile station. It is easier and it is possible to eliminate restrictions on the zone radius of the base station.

A wireless communication system according to the next invention performs wireless communication between a plurality of base stations and a mobile station, and controls the mobile station and the plurality of base stations by a control device. Transmitting and receiving means for receiving a radio wave sent back from each base station after transmitting the radio wave to each base station, measuring means for measuring an interval between transmission and reception timings of the radio wave by the transmitting and receiving means as a delay time, and a plurality of measurement results of the measuring means. Transmitting means for transmitting to any one of the base stations, wherein each base station receives a radio wave by the transmitting and receiving means, and then takes a delay time according to the electric field strength at the time of reception to transmit the radio wave to the mobile station. Is sent back.

According to the present invention, the mobile station measures the delay time from the transmission / reception timing of the radio wave to the base station, transmits the measurement result to any one of the plurality of base stations. After receiving radio waves from the station,
Since the radio wave is sent back to the mobile station with the delay time according to the electric field strength at the time of reception, the delay time can be taken in a large unit in the system, and the delay time of each base station can be measured. And the restriction on the zone radius of the base station can be eliminated.

[0048] A wireless communication system according to the next invention is a system that takes a delay time according to the electric field strength, and one of the base station and the control device is based on the measurement result of the measuring means possessed by the base station. The mobile station is characterized by calculating position information of the mobile station.

According to the present invention, in a system that takes a delay time according to the electric field strength, one of the base station and the control device calculates the position information of the mobile station based on the measurement result held by the base station. As a result, the position of the mobile station can be easily and reliably obtained under conditions where there is no restriction on the zone radius of the base station.

A wireless communication system according to the next invention performs wireless communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device. A transmission / reception unit that receives a radio wave transmitted back from the mobile station after transmitting a radio wave to the mobile station, and a measurement unit that measures an interval of transmission / reception timing of the radio wave by the transmission / reception unit as a delay time, and the control device includes: Collection means for collecting the measurement results of the measurement means by the base station, and transfer means for transferring the measurement results collected by the collection means to the mobile station through a representative base station of a plurality of base stations, After receiving radio waves from each base station by the transmission / reception means, return means for transmitting the radio waves to each base station with a delay time according to the electric field strength at the time of reception,
Calculating means for receiving the measurement result transferred from the representative base station by the transfer means of the control device and calculating the position information of the own station based on the measurement result.

According to the present invention, each base station measures the delay time from the transmission / reception timing of the radio wave to the mobile station, the control device collects the measurement results of each base station, and collects all the measurement results as the representative base station. After receiving the radio wave from each base station at the mobile station,
The radio wave is sent back to the mobile station with a delay time according to the electric field strength at the time of reception, and the position information of the own station is calculated based on all the measurement results from the control device. It can be measured in large units, which makes it easy to measure the delay time of mobile stations,
It is possible to eliminate restrictions on the zone radius of the base station.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. Measuring means for measuring time, and calculating means for calculating the position information of the own station based on the measurement result of the measuring means. Radio waves are sent back to the mobile station with a delay time corresponding to the strength.

According to the present invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the base station, and also measures the delay time from the transmission and reception timing of radio waves. After calculating the position of the own station based on the base station, the base station receives the radio wave from the mobile station, and then returns the radio wave to the mobile station with a delay time according to the electric field strength at the time of reception, so that the system , The delay time can be measured in large units, which makes it easy to measure the delay time of the base station,
It is possible to eliminate restrictions on the zone radius of the base station.

A radio communication system according to the next invention performs radio communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the mobile station, and measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. And measuring means for measuring time, and the mobile station, after receiving the radio wave from the base station by the transmitting and receiving means, takes a delay time according to the electric field strength at the time of the reception and sends the radio wave back to the base station. Features.

According to the present invention, the base station measures the direction of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and measures the delay time from the transmission and reception timing of radio waves. After receiving the radio wave from the base station, the radio wave was sent back to the mobile station with a delay time according to the electric field strength at the time of reception,
On the system, the delay time can be taken in large units,
This makes it easy to measure the delay time of the mobile station and eliminates restrictions on the zone radius of the base station.

A wireless communication system according to the next invention performs wireless communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. Measuring means for measuring time, and transmitting means for transmitting the measurement result of the measuring means to the base station, wherein the base station receives a radio wave by the transmitting / receiving means, and then delays according to the electric field strength at the time of reception. It is characterized in that radio waves are sent back to the mobile station after a while.

According to the present invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength in the transmission and reception to and from the base station, and also measures the delay time from the transmission and reception timing of the radio wave. After transmitting to the base station, the base station receives the radio wave from the mobile station, and then returns the radio wave to the mobile station with a delay time according to the electric field strength at the time of reception. It can be taken in large units, which makes it easier to measure the delay time of the base station and eliminates any restrictions on the zone radius of the base station.

The wireless communication system according to the next invention has the following features.
In a system that takes a delay time according to the electric field strength using a base station, one of the base station and the control device calculates the position information of the mobile station based on the measurement result of the measurement means held by the base station It is characterized by doing.

According to the present invention, in a system in which a delay time corresponding to the electric field strength is obtained by using one base station, the mobile station moves based on the measurement result held by the base station by one of the base station and the control device. Since the position information of the station is calculated, the position of the mobile station can be easily and reliably obtained under the condition that the zone radius of the base station is not limited.

A wireless communication system according to the next invention performs wireless communication between a base station and a mobile station, and controls the mobile station and the base station by a control device. Transmitting and receiving means for receiving a radio wave sent back from the mobile station, and measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval between transmission and reception of radio waves by the transmitting and receiving means. Measuring means for measuring time, the control device comprising: collecting means for collecting measurement results of the measuring means by the base station; and transfer means for transferring the measurement results collected by the collecting means to the mobile station through the base station. The mobile station receives a radio wave from the base station by the transmission / reception means, and then takes a delay time according to the electric field strength at the time of the reception. Reply means for transmitting radio waves to the station, and calculating means for receiving the measurement result transferred from the base station by the transfer means of the control device and calculating the position information of the own station based on the measurement result It is characterized by.

According to the present invention, the base station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and also measures the delay time from the transmission and reception timing of radio waves. The measurement results of the base station are collected, the measurement results are transferred to the mobile station through the base station, and after the mobile station receives a radio wave from the base station, the mobile station moves with a delay time according to the electric field strength at the time of reception. Since the radio wave is sent back to the station and the position information of the own station is calculated based on the measurement result from the control device, the delay time can be taken in a large unit in the system, and thus the delay time of the mobile station can be obtained. Is easy to measure, and the restriction on the zone radius of the base station can be eliminated.

[0062] The wireless communication system according to the next invention is characterized in that the measuring means measures the delay time by comparing the frame timing of the transmitted and received radio waves.

According to the present invention, since the delay time is measured by comparing the frame timings of the transmitted and received radio waves, there is no need to manage the delay time in clock units, thereby eliminating measurement errors. It is possible.

A wireless communication system according to the next invention is characterized in that a modulation / demodulation method based on time division multiple access is applied to wireless communication.

According to the present invention, since the modulation / demodulation method based on time division multiple access is applied to the wireless communication, the frequency can be effectively used by the same frequency, and the system configuration corresponding to one frequency can be simplified. It is possible to reduce costs.

A radio communication system according to the next invention is characterized in that a modulation / demodulation method based on frequency division multiple access is applied to radio communication.

According to the present invention, since the modulation / demodulation method based on frequency division multiple access is applied to wireless communication, it is possible to reduce the addition of a control device such as eliminating the need for timing control by the control device.

[0068] A radio communication system according to the next invention is characterized in that the transmitting and receiving means uses two different frequencies, one of which is used for speech communication, and the other of which is used for position calculation. .

According to the present invention, two different frequencies are used for the call and for the position calculation, so that the call is not interrupted. It is possible to determine the position.

[0070] A wireless communication system according to the next invention is characterized in that the control device instructs the mobile station to perform a wireless communication among a plurality of base stations through wireless communication.

According to the present invention, since the control device instructs the mobile station to perform wireless communication among a plurality of base stations through wireless communication, the mobile station can quickly scan the base station. This makes it possible to quickly determine the position of the mobile station.

The radio communication system according to the next invention further comprises a base station for preventing non-sensing, and a base station which performs radio communication with the mobile station when the electric field strength between the base station and the mobile station decreases. To a base station for countermeasures against insensitivity.

According to the present invention, when the electric field strength between the base station and the mobile station decreases, the base station that performs radio communication with the mobile station is switched from the base station to the base station for non-detection measures. , It is possible to smoothly switch to a zone in which reception can be performed satisfactorily.

[0074]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a radio communication system according to the present invention will be described below in detail with reference to the accompanying drawings.

(Embodiment 1) FIG. 1 is a configuration diagram showing a wireless communication system according to Embodiment 1 of the present invention. The wireless communication system shown in FIG. 1 includes, for example, a control device 1A for controlling a base station 2A and a mobile station 3A, a base station 2A for transmitting a radio wave, and a mobile station for receiving a radio wave and obtaining position information of its own station. 3A or the like.

The controller 1A controls the entire system by communicating with the base station 2A through wired communication and communicating with the mobile station 3A through wireless communication. Base station 2
A transmits a radio wave to form a radio wave range having a predetermined radius, that is, a zone Z1. The mobile station 3A is located in the zone Z1.
Within the base station 2A, the radio wave transmitted from the base station 2A is received, the electric field strength and the direction based on the radio wave are measured, and the position information of the own station is obtained based on the electric field strength. In the first embodiment, the mobile station 3A is mounted on a mobile device such as an automobile, but may be a mobile phone, a portable information terminal, or the like.

In the example shown in FIG. 1, the location of the mobile station 3A is in the area indicated by J1 around the base station 2A. For example, when the base station 2A transmits a radio wave, that is, a radio signal WL1 in the zone Z1, the mobile station 3A receives the radio signal WL1 and transmits the radio signal WL1 in the azimuth (the base station 2A transmits the radio signal WL1). Positioning direction) B1 (indicated by a dashed line in the figure), that is, the direction at which the electric field intensity increases most, the position information of the own station based on the received electric field intensity is obtained.

Here, the mobile station 3A will be described in detail. FIG. 2 is a block diagram showing an internal configuration of the mobile station 3A according to the first embodiment. The mobile station 3A, as shown in FIG.
For example, the directional antenna 31, the antenna driving unit 32, the radio unit 33, the reception level detection unit 34, the modulation and demodulation unit 35, the input unit 36, the display unit 37, the microphone 38, the speaker 39, the CP
U40, ROM41 and RAM42.

The directional antenna 31 is connected to the base station 2A (FIG. 1).
The wireless signal WL1 is received and output to the wireless unit 33, and the transmission signal from the wireless unit 33 is received and a radio wave is transmitted. This directional antenna 31
Scans a base station 2A that transmits a radio wave by being rotated by an antenna driving unit 32 described later. Antenna driver 3
2 is a directional antenna 31 according to the control of the CPU 40 so that the directional antenna 31 faces a direction in which the electric field intensity is strong.
Is driven to rotate.

The radio section 33 transmits and receives data when transmitting and receiving.
The modulated signal from the directional antenna 31 is transmitted to the directional antenna 31, and the modulated signal received by the directional antenna 31 is detected and transmitted to the modem 35. The reception level detection unit 34 detects a reception level based on a reception signal from the wireless unit 33 and outputs the reception level to the CPU 40. The modulation and demodulation unit 35
At the time of transmission, the transmission signal is modulated and then output to the radio section 33. At the time of reception, the reception signal from the radio section 33 is demodulated and then output to the CPU 40.

The input unit 36 has an input switch for operating a function unique to the mobile station, turning on / off the power, and performing a communication operation with the base station 2A and the control device 1A. Under the control of the CPU 40, the display unit 37 displays information unique to the mobile station, and visually displays the position of the mobile station using characters or graphics. The microphone 38 inputs voice and converts it into an electric signal (voice signal) in order to transmit the voice signal to the base station 2A or the control device 1A. The speaker 39 is connected to the base station 2
A and outputs audio based on audio signals received through communication with the control device 1A.

The CPU 40 controls the operation of its own station in accordance with the program stored in the ROM 41. This CP
U40 is, in addition to the control as a normal mobile station, based on the reception level input from the reception level detection unit 34 in accordance with the drive control of the directional antenna 31 by the antenna drive unit 32, the azimuth of the strongest reception electric field strength. Is determined, and the position information of the own station is calculated based on the received electric field strength in that direction.

The ROM 41 stores parameters necessary for various operations of the CPU 40 and program data such as a control program according to the flowchart shown in FIG.
The control program shown in FIG. 3 is a program for obtaining position information of the own station in zone Z1 formed by base station 2A. The RAM 42 is a work area used when the CPU 40 operates.

Next, the operation will be described. FIG. 3 is a flowchart for explaining the operation of the mobile station 3A, FIG. 4 is a graph showing the relationship between the received electric field strength and the azimuth, and FIG. 5 is a diagram showing a display example of the mobile station. Note that FIG.
The entire operation according to the flowchart shown in FIG.
The individual operations are performed by each unit.

In the wireless communication system shown in FIG.
The mobile station 3A moving in the zone Z1 formed by the base station 2A starts radio wave reception using the directional antenna 31 and starts reception level detection (step S1). When the base station 2A transmits a radio wave and the mobile station 3A receives the radio wave (step S2), the mobile station 3A controls the antenna driving unit 32 to drive the directional antenna 31, and the electric field intensity is maximized. The azimuth is measured (step S3). At this time, the reception level detection unit 34 through the directional antenna 31 constantly receives the reception signal (the radio signal WL).
The reception level of 1) is detected, and the azimuth having the highest level from the reception level is the position of the base station 2A.

FIG. 4 shows that the mobile station 3A has the directional antenna 3
1 is a graph when the received electric field strength is scanned clockwise on the “north” reference (0 °) using “1”. here,
A position at 150 ° with respect to “north” indicates a peak, and the peak position becomes the direction having the strongest electric field intensity (step S4). In other words, in FIG. 1, the location of the base station 2A is the azimuth when the mobile station 3A is rotated clockwise by 150 ° from the north with respect to the axis.

At this time, based on the electric field strength in the azimuth obtained by the above-described measurement, as shown in FIG. 1, the location of the mobile station 3A is determined by the area J1 formed with a radius centered on the base station 2A.
Is determined (step S5). This area J1
Above, the position information of the mobile station 3A is calculated and obtained based on the positional relationship between the base station 2A and the mobile station 3A. At this time, the specific position of the mobile station 3A can be determined on a previously prepared map based on the position information, for example (step S6). As a result, the position of the mobile station 3A is visually displayed (step S7), but there are several display forms. That is, when the graphic display mode is applied, the mobile station 3A is arranged in the northwest direction on the display unit 37 with reference to the base station 2A (FIG. 5A). Alternatively, when the character display mode is applied, the display unit 3
7, a message such as "5 km northwest of the base station" is displayed (FIG. 5B).

As described above, according to Embodiment 1, mobile station 3A measures the azimuth of the received electric field while measuring the electric field strength from base station 2A, and based on the measurement result, determines the local station. Is calculated, only one base station 2A is required in the system, which simplifies the system configuration and system operation. Therefore, the mobile station can easily and reliably determine its own position. It is possible to ask.

(Embodiment 2) In Embodiment 1 described above, the mobile station measures the received electric field strength from the base station to determine the position of the mobile station. As in the second embodiment, the position of the mobile station may be obtained by the base station measuring the electric field strength received from the mobile station.

FIG. 6 is a configuration diagram showing a radio communication system according to Embodiment 2 of the present invention. The wireless communication system illustrated in FIG. 6 includes, for example, a control device 1B for controlling the base station 2B and the mobile station 3B, a base station 2B that receives a radio wave to obtain position information of the own station, and a mobile station that transmits a radio wave. 3B
It is composed of

The control device 1B controls the entire system by communicating with the base station 2B through wired communication and communicating with the mobile station 3B through wireless communication. Base station 2
B transmits a radio wave to form a radio range having a predetermined radius, that is, a zone Z2, and receives a radio wave from the mobile station 3B to obtain the position of the mobile station 3B. This base station 2
B receives the radio wave transmitted from the mobile station 3B in the zone Z2, measures the electric field strength and the direction based on the radio wave, and obtains the position information of the mobile station 3B based on the electric field strength.

The mobile station 3B has the same configuration as that of the mobile station 3A described in the first embodiment except that the position calculation function is omitted except for the reception level detector 34. The mobile station 3B transmits a radio wave to the base station 2B to cause the base station 2B to calculate the position of the mobile station. The mobile station 3B is mounted on a mobile device such as an automobile as shown in FIG.
It may be a mobile phone, a portable information terminal, or the like.

When the mobile station 3B transmits a radio wave, that is, a radio signal WL2 to the base station 2B in the zone Z2 shown in FIG. 6, the base station 2B receives the radio signal WL2 and transmits the radio signal WL2. Is transmitted (the direction in which the mobile station 3B is located) B2 (indicated by a dashed line in the figure), that is, the direction in which the electric field strength increases the most, and the position information of the mobile station 3B based on the received electric field strength is obtained.

Here, the base station 2B will be described in detail. FIG. 7 is a block diagram showing the internal configuration of the base station 2B. The base station 2B, as shown in FIG.
1, radio section 22, reception level detection section 23, modulation and demodulation section 2
4, a control unit 25, a communication unit 26, and a mobile station information storage unit 27.

The antenna 21 is connected to the mobile station 2B (see FIG. 6).
, And outputs the radio signal WL2 to the radio unit 22, or receives a transmission signal from the radio unit 22 and transmits a radio wave. The antenna 21 is a directional antenna that is rotated by a driving unit (not shown) as in the first embodiment, and scans in all directions around the base station 2B to receive radio waves. Upon transmission, the radio unit 22 sends out the modulated signal from the modem unit 24 to the antenna 21 or detects the modulated signal received by the antenna 21 and sends it to the modem unit 24.

[0096] Reception level detection section 23 detects the reception level based on the reception signal from radio section 22 and outputs the reception level to control section 25. The modulation / demodulation unit 24 modulates a transmission signal at the time of transmission and outputs the modulated signal to the radio unit 22, and demodulates a reception signal from the radio unit 22 at the time of reception.
5 is output. The control unit 25 controls the operation of the own station as a whole according to a program stored in advance. This control unit 2
5 determines the direction of the strongest reception electric field strength based on the reception level input from the reception level detection unit 23 in accordance with the drive control of the directional antenna 21 in addition to the control as a normal base station. , And calculates the position information of the mobile station 3B based on the received electric field strength in that direction.

[0097] The mobile station information storage section 27 stores identification information for identifying the mobile station monitored by the base station 2B in the zone Z2 and the like. Provide information. If the identification information unique to the mobile station is added to the transmission signal transmitted by each mobile station in the zone Z2, the base station 2B extracts the identification information from the received signal, and the extracted identification information and the mobile station The mobile station is identified from the collation with the identification information in the information storage unit 27. The communication unit 26 is connected to the control device 1B via a wired line, and communicates with the control device 1B via the wired line.

Next, the control device 1B will be described in detail.
FIG. 8 is a block diagram showing the internal configuration of the control device according to the second embodiment. The control device 1B includes, for example, a communication unit 11, a control unit 12, a position calculation database 13, and a storage unit 14, as shown in FIG. The communication unit 11 is connected to the base station 2B via a wired line,
Communication with the base station 2B is performed through the wired line. The control unit 12 controls the operation of the entire control device according to a program stored in advance. The control unit 12 calculates the position information of the mobile station 3B based on the measurement result (electric field strength and its direction) transmitted from the base station 2B, in addition to the control as a normal control device.

The position calculation database 13 stores distance data between the base station and the mobile station corresponding to the electric field strength,
2 is stored. The position calculation database 13 is accessed by the control unit 12 when calculating the position of the mobile station, and converts the given electric field strength into distance data and converts the given distance data and direction into position information on the zone Z2. I do. The storage unit 14 stores the mobile station and its location information in association with each other under the control of the control unit 12.

Although not shown, the control device 1B has a radio communication device including an antenna, and communicates with the mobile station 3B through the radio communication device.

Next, the operation will be described. FIG. 9 is a flowchart illustrating a system operation according to the second embodiment. The entire operation according to the flowchart shown in FIG. 9 is controlled by the control unit 12 of the control device 1B, the control unit 25 of the base station 2B, and the CPU of the mobile station 3B.
Each operation is performed in the control device 1B, the base station 2B, the mobile station 3
This is performed in each part in B.

In the radio communication system shown in FIG.
The mobile station 3B moves in a zone Z2 formed by the base station 2B.
While is moving, the base station 2B starts radio wave reception using the directional antenna 21 and starts reception level detection (step B1). When the mobile station 3B transmits a radio wave (step M1) and the base station 2B receives the radio wave (step B2), the base station 2B
Scanning of the radio wave is performed by controlling the driving of No. 1 to measure the azimuth at which the electric field intensity becomes the highest (step B3).

At this time, in the base station 2B, the reception level of the reception signal (wireless signal WL2) is constantly detected by the reception level detection unit 23 through the directional antenna 21, and the azimuth with the highest level moves from the reception level. This is the position of the station 3B. That is, also in this case, similarly to the measurement of the electric field strength and its direction according to the above-described first embodiment, base station 2B uses directional antenna 21 to set the “north” reference (0).
Scan the received electric field strength clockwise in ゜) and measure the azimuth with the strongest electric field strength.

In the base station 2B, the azimuth obtained by the above-described measurement and the electric field strength thereof are transmitted to the control device 1B as a result of measurement for the mobile station 3B (step B4). At this time, the control device 1B receives the measurement result from the base station 2B (step C1). Then, the position calculation database 13 is referred to, and the position information of the mobile station 3B is calculated and obtained based on the distance relationship between the base station 2B and the mobile station 3B based on the received measurement result and the azimuth thereof. (Step C2). In the control device 1B, the position information of the mobile station 3B obtained as described above is stored in the mobile station 3B.
Is stored in the storage unit 14 so as to be identifiable as the position information (step C3).

As described above, according to the second embodiment, the base station 2B measures the direction of the received electric field while measuring the electric field strength from the mobile station 3B. Only one station 2B is required, whereby the system configuration and system operation can be simplified.

Further, if one of the base station 2B and the control device 1B calculates the position information of the mobile station 3B based on the measurement results (including the electric field strength) held by the base station 2B, the system configuration Further, the position of the mobile station 3B can be easily and reliably obtained under the condition where the system operation is simplified.

(Embodiment 3) In Embodiments 1 and 2 described above, the mobile station or the base station performs measurement and calculation of the position of the mobile station on one side only. As described in the third embodiment, the mobile station may perform the measurement, and the base station may perform the processing of the mobile station position.

FIG. 10 is a configuration diagram showing a radio communication system according to Embodiment 3 of the present invention. The wireless communication system shown in FIG. 10 includes, for example, a base station 2C and a mobile station 3
A control device 1C that controls C and obtains the position of the mobile station 3C, a base station 2C that transmits and receives radio waves, receives radio waves from the base station 2C, and receives the received electric field strength and its direction at the base station as measurement results. It is composed of a mobile station 3C transmitting to 2C.

Control device 1C has the configuration shown in FIG. 8 in the second embodiment. For this reason, for the control device 1C, reference numerals in FIG. 8 are used for description. The control device 1C controls the entire system by communicating with the base station 2C through wired communication, and communicating with the mobile station 3C through wireless communication. Base station 2C has the configuration shown in FIG. 7 in the second embodiment.
Therefore, the reference numerals in FIG. 7 are used for the base station 2C.
The base station 2C transmits a radio wave to form a radio range having a predetermined radius, that is, a zone Z3. This base station 2
C has a function of transferring the measurement result transmitted from the mobile station 3C to the control device 1C.

The mobile station 3C has the configuration shown in FIG. 2 in the first embodiment, and omits the function of obtaining the position of the mobile station from the mobile station 3C. Therefore, the reference numerals in FIG. 2 are used for the mobile station 3C. This mobile station 3C
Receives the radio wave transmitted from the base station 2C in the zone Z3, measures the electric field strength and its direction based on the radio wave, and transmits the electric field strength and its direction to the base station 2C as a measurement result. . In the third embodiment, the mobile station 3C is mounted on a mobile device such as an automobile, but may be a mobile phone, a portable information terminal, or the like.

Next, the operation will be described. FIG. 11 is a flowchart illustrating a system operation according to the third embodiment. The entire operation according to the flowchart shown in FIG. 11 is performed by the control unit 12 of the control device 1C and the base station 2C.
Is controlled by the control unit 25 and the CPU 40 of the mobile station 3C. The individual operations are performed in the control device 1C, the base station 2C,
This is performed in each unit in the mobile station 3C.

In the radio communication system shown in FIG. 10, mobile station 3C moving in zone Z3 formed by base station 2C starts radio wave reception using directional antenna 31 and starts reception level detection. I do. When the base station 2C transmits a radio wave and the mobile station 3C receives the radio wave (step B11), the mobile station 3C controls the antenna driving unit 32 to drive the directional antenna 31, and the electric field intensity is maximized. Measure azimuth (step M1
1). At this time, the reception level of the reception signal (wireless signal WL3) is always detected by the reception level detection unit 34 through the directional antenna 31, and the azimuth having the highest level from the reception level is the position of the base station 2C.

In the mobile station 3C, the azimuth obtained by the above-described measurement and the electric field strength thereof are transmitted to the base station 2C as a measurement result for the base station 2C (step M12). At this time, the base station 2C transfers the measurement result transmitted from the mobile station 3C to the control device 1C as it is (step B12). The control device 1C receives the measurement result from the base station 2C (step C11). In the control device 1C,
The position calculation database 13 is referred to, and the position information of the mobile station 3C is calculated and obtained based on the distance relationship between the base station 2C and the mobile station 3C and the azimuth based on the received measurement result (step). C12). In the control device 1B, the position information of the mobile station 3C obtained as described above is identifiably stored as the position information of the mobile station 3C (step C13).

As described above, according to Embodiment 3, mobile station 3C measures the direction of the received electric field while measuring the electric field strength from base station 2C, and sends the measurement result to base station 2C. Since transmission is performed, only one base station 2C is required in the system, and thus the system configuration and system operation can be simplified.

Further, if one of the base station 2C and the control device 1C calculates the position information of the mobile station based on the measurement result (including the electric field strength) held by the base station 2C, the system configuration and The position of the mobile station 3C can be easily and reliably obtained under the condition where the system operation is simplified.

(Embodiment 4) In Embodiments 1 and 2 described above, the mobile station or the base station performs measurement and calculation of the position of the mobile station on one side only. As described in the fourth embodiment, the base station may perform the measurement, and the mobile station may perform the processing of the own station position.

FIG. 12 is a block diagram showing a radio communication system according to Embodiment 4 of the present invention. FIG. 13 is a block diagram showing a main part of a mobile station according to Embodiment 4. FIG.
The wireless communication system shown in FIG. 2 receives, for example, a control device 1D for controlling the base station 2D and the mobile station 3D, receives radio waves from the mobile station 3D, and measures the received electric field strength and its direction at that time. The base station 2D transmits to the mobile station 3D, and the base station 2D transmits and receives radio waves and obtains the position of the own station.

The control device 1D has the configuration shown in FIG. 8 in the second embodiment described above, except for the function of obtaining the position of the mobile station except for the position calculation database 13 therefrom. . For this reason, the control device 1D uses the reference numerals in FIG. 8 for description. This control device 1D
Communicates with the base station 2D through wired communication, and communicates with the mobile station 3D through wireless communication to control the entire system. The base station 2D corresponds to the second embodiment described above.
Has the configuration shown in FIG. Therefore, the reference numerals in FIG. 7 are used for the base station 2D. This base station 2
D transmits a radio wave to form a radio range having a predetermined radius, that is, a zone Z4. The base station 2D receives a radio wave transmitted from the mobile station 3D, measures the electric field strength and its direction based on the radio wave, and transmits the electric field strength and its direction to the mobile station D as a measurement result.

The mobile station 3D has the configuration shown in FIG. 2 in the first embodiment. Therefore, mobile station 3
For D, reference numerals in FIG. 2 are used. Note that this mobile station 3
D has a position calculation database 43 similar to the position calculation database 13 of the control device 1B described in the second embodiment. This mobile station 3D is located in zone Z4
Within the base station 2D after the radio wave transmission to the base station 2D.
The position information of the own station is obtained based on the measurement result transmitted from the terminal. In the fourth embodiment, the mobile station 3D is mounted on a mobile device such as an automobile.
It may be a portable information terminal or the like.

Next, the operation will be described. FIG. 14 is a flowchart illustrating a system operation according to the fourth embodiment. Although the entire operation according to the flowchart shown in FIG. 14 is controlled by the control unit 25 of the base station 2D and the CPU 40 of the mobile station 3D, each operation is performed in each unit in the base station 2D and the mobile station 3D. .

In the radio communication system shown in FIG. 14, the mobile station 3D and the base station 2D moving in the zone Z4 formed by the base station 2D start radio wave reception using a directional antenna, respectively. Start reception level detection. When the mobile station 3D transmits a radio wave and the base station 2D receives the radio wave (step M21), the base station 2D controls the driving of the antenna 21 to measure the azimuth at which the electric field intensity becomes strongest (step B21). . At this time, the reception level of the reception signal (wireless signal WL6) is always detected by the reception level detection unit 23 through the antenna 21, and the azimuth having the highest level from the reception level is the position of the mobile station 3D.

In the base station 2D, the azimuth obtained by the above-described measurement and the electric field strength thereof are transmitted to the mobile station 3D as a result of the measurement for the mobile station 3D (step B22). At this time, the mobile station 3D receives the measurement result transmitted from the base station 2D. The mobile station 3D refers to the position calculation database 43, and calculates the position information of the mobile station 3D based on the distance relationship between the base station 2D and the mobile station 3D based on the received measurement result and the azimuth thereof. (Step M22). In the mobile station 3D, the position information of the mobile station 3D obtained as described above is output through display or the like as in the first embodiment (step M23).

As described above, according to the fourth embodiment, the base station 2D measures the direction of the received electric field while measuring the electric field strength from the mobile station 3D, and transmits the measurement result to the mobile station 3D. And the mobile station 3D calculates its own location information based on the measurement result, so that only one base station 2D is required in the system, which simplifies the system configuration and system operation. Therefore, it is possible for the mobile station itself to easily and reliably determine its own position.

(Embodiment 5) In Embodiment 1 described above, the position of the mobile station is obtained by measuring the electric field strength. However, as in Embodiment 5 described below,
The delay time may be measured without measuring the electric field strength. In the fifth embodiment, a method using a wireless transmission clock will be described as an example of a method of measuring a delay time.

FIG. 15 is a configuration diagram showing a wireless communication system according to Embodiment 5 of the present invention. The wireless communication system illustrated in FIG. 15 includes, for example, a plurality of base stations 20A and 21A.
A, 22A and control device 10A for controlling mobile station 30A, base stations 20A, 21A, 22 for transmitting radio waves
A, a mobile station 30A that receives radio waves from each of the base stations 20A, 21A, and 22A to obtain position information of the own station, and the like.

The control device 10A comprises the base stations 20A, 21
A and 22A communicate through wired communication, while the mobile station 30A communicates through wireless communication to control the entire system. The base stations 20A, 21A, and 22A have the configuration shown in FIG. 7 in the second embodiment, and exclude the reception level detection unit 23 and the mobile station information storage unit 27 therefrom to determine the position of the mobile station. It does not include the function required. Each of the base stations 20A, 21A, and 22A transmits a radio wave in accordance with the timing of reception from the mobile station 30A and forms a radio wave range having a predetermined radius, that is, zones Z11, Z12, and Z13.

The mobile station 30A has zones Z1, Z2, Z3
In any one of the above, each base station 20A, 2
Radio waves transmitted from the base stations 1A and 22A are received, the delay time of signal arrival from each of the base stations 20A, 21A and 22A to the own station is measured, and the position information of the own station is obtained from the delay time. In the fifth embodiment, the mobile station 30
A is mounted on a mobile device such as an automobile, but may be a mobile phone, a portable information terminal, or the like.

In the example shown in FIG. 15, the location of the mobile station 30A is located at J1, J2 around the base stations 20A, 21A and 22A.
It is the intersection of the areas indicated by J2 and J3. This mobile station 3
The location of 0A is outside the service area of the zone Z12 by the base station 21A. For example, in zone Z11,
When the base station 20A transmits the radio signal, that is, the radio signal WL11, the mobile station 30A receives the radio signal WL11 and determines the difference between the arrival time of the radio signal WL11 after the radio signal transmission of its own station and the transmission / reception clock. Measure based on the amount of delay. The mobile station 30A is connected to each of the base stations 20A, 21A, 22A.
The position information of the own station is obtained on the basis of the delay time obtained between.

Next, the mobile station 30A will be described in detail.
FIG. 16 is a block diagram showing one main part of the mobile station according to the fifth embodiment, and FIG. 17 is a block diagram showing another main part of the mobile station according to the fifth embodiment. The mobile station 30A according to the fifth embodiment is different from the mobile station 3 according to the first embodiment.
A delay measuring section 50 in place of the receiving level detecting section 34 of A
(See FIG. 16) and a distance conversion database 51 (see FIG. 17) is newly added.
Although not shown, the mobile station 30A has an antenna structure that is not limited to the directional antenna 31, so that the antenna driving unit 32 is not an essential component.

In FIG. 16, the delay measuring section 50 is connected to the output of the radio section 33, measures the amount of delay caused by the transmission / reception clock, and supplies the measurement result to the CPU 40. The delay measuring unit 50 includes a clock recovery circuit 50A, a phase comparator 50B, a reference clock generation circuit 50C, and the like. The clock recovery circuit 50A recovers the received clock based on the received signal and compares the phase ω1 with the phase comparator 50A.
Output to B. The reference clock generation circuit 50C generates a transmission clock of a transmission signal for each of the base stations 20A, 21A, and 22A, and outputs the phase ω0 of the transmission clock to the phase comparator 50B. The phase comparator 50B compares the phases ω1 and ω2 input from the clock recovery circuit 50A and the reference clock generation circuit 50C, respectively, obtains the delay amount Δω, and outputs the delay amount Δω to the CPU 40.
The CPU 40 calculates the delay time of the transmission / reception clock based on the delay amount Δω.

In FIG. 17, the distance conversion database 51 stores a delay time Ti (i is a natural number) and a distance Di in association with each other, and converts the delay time into a distance in accordance with an access from the CPU 40. The distance between each of the base stations 20A, 21A, 22A and the mobile station 30A can be obtained using the distance conversion database 51.

Next, the operation will be described. FIG. 18 is a flowchart illustrating a system operation according to the fifth embodiment, and FIG. 19 is a timing chart illustrating a delay time according to the fifth embodiment. The entire operation according to the flowchart shown in FIG.
Each control unit 25 of 1A and 22A, CPU 4 of mobile station 30A
0, but each operation is controlled by the base station 20A,
This is performed in each unit in the mobile station 30A in the units 21A and 22A.

In the radio communication system shown in FIG. 15, the mobile station 30A moving in the zones Z11, Z12, Z13 formed by the base stations 20A, 21A, 22A respectively starts radio wave reception. First, the mobile station 30A
Is used to determine the position of the base station.
Radio waves are transmitted to A, 21A and 22A (step M31). When the base station 20A to 22A receives the radio wave from the mobile station 30A, the radio wave is transmitted to the mobile station 30A in synchronization with the reception timing (step B3).
1). In the mobile station 30A, when the radio wave is received (step M32), the delay amount Δ
Since ω is obtained, the delay time is measured (calculated) corresponding to each of the base stations 20A, 21A, and 22A (step M3).
3). Note that the delay amount Δω is, as shown in FIG.
Radio waves from the mobile station 30A are transmitted to the base stations 20A, 21A, 2
2A, the amount of delay at the time of reception, and each base station 20A, 21
A is the sum of the delay amount when the base station 30A receives the radio waves from A and 22A.

In the mobile station 30A, the delay time for each base station is converted into a distance by referring to the distance conversion database 51. Based on this distance, the base stations 20A, 2
Areas J11 and J1 centered on 1A and 22A, respectively.
2, J13 are obtained, and these areas J11, J12,
By finding the intersection of J13 and setting the intersection as the location of the own station, the position information of the own station is obtained (step M3).
4).

As a specific example of calculating the delay amount from the transmission / reception clock in step M33, the wireless transmission speed is set to 8
In the case of kbps, a distance up to about 20 km can be obtained by utilizing the difference in clock phase. This distance is determined by the wireless transmission speed. The principle is as follows.

That is, the radio transmission speed is set to 3 × 10 ⁸ m /
In seconds, the time for one clock of 8 kbps is 12
Since it is 5 seconds, the distance is 3 × 10 ⁸ × 125 × 10 ^-6 =
It is about 40 km. When measuring the delay time, the round trip delay time is measured, so that a distance up to about 20 km can be obtained.

As described above, according to Embodiment 5, in mobile station 30A, base stations 20A, 21A, 2
Since the delay time is measured from the transmission / reception timing of the radio wave to 2A and the position of the own station is calculated based on the measurement result, no special signal such as a unique word is required for measuring the delay time in the mobile station 30A. As a result, the load on the system operation can be reduced and problems such as communication disconnection can be prevented, so that the mobile station itself can easily and reliably find its own position.

(Embodiment 6) In Embodiment 2 described above, the position of the mobile station is obtained by measuring the electric field strength. However, as in Embodiment 6 described below,
The delay time may be measured without measuring the electric field strength. In the sixth embodiment, a method using a wireless transmission clock will be described as an example of a method of measuring a delay time.

FIG. 20 is a configuration diagram showing a wireless communication system according to Embodiment 6 of the present invention. The wireless communication system illustrated in FIG. 20 includes, for example, a plurality of base stations 20B and 21.
B, 22B and the mobile station 30B, a control device 10B for obtaining position information of the mobile station 30B, a radio wave from the mobile station 30B to measure the delay time, and transfer the measurement result to the control device 10B. Base station 20B,
21B and 22B, a mobile station 30B for transmitting radio waves, and the like.

The control device 10B comprises the base stations 20B, 21
B and 22B are communicated through wired communication, while the mobile station 30B is communicated through wireless communication to control the entire system and to communicate with each of the base stations 20B, 21B and 2B.
The position of the mobile station 30B is obtained based on the measurement result (delay time) transmitted from 2B. Base stations 20B, 21B,
22B receives the radio wave transmitted from the mobile station 30B after transmitting the radio wave, measures the delay time of the signal arrival from the mobile station 30B to its own station, and transfers the delay time to the control device 10B as a measurement result. I do. The base stations 20B, 21B, and 22B form radio wave ranges having predetermined radii, that is, zones Z11, Z12, and Z13.

Mobile station 30B has the configuration shown in FIG. 2 in the first embodiment, except that reception level detecting section 34 is omitted therefrom, and the function for obtaining the position of the mobile station is omitted. It is. The mobile station 30B is connected to each base station 20B, 2
Radio waves are transmitted in accordance with the timing of reception from 1B and 22B. In the sixth embodiment, the mobile station 30B
Is mounted on a mobile device such as a car, but may be a mobile phone, a portable information terminal, or the like.

In the example shown in FIG. 20, the location of mobile station 30B is located in zones Z21 and Z2 of base stations 20B and 22B.
2 and is out of the service area of the zone Z12 by the base station 21B. For example, zone Z21
Within the mobile station 30B, each base station 20B, 21
The radio waves, that is, the radio signals WL21, WL22, and WL23 are transmitted in accordance with the timing of reception from B and 22B.
In this case, each of the base stations 20B, 21B, and 22B receives the radio signals WL21, WL22, and WL23, respectively.
Radio signals WL21, WL22, WL after radio wave transmission of own station
23 is measured based on the delay amount of the transmission / reception clock. Based on the delay time obtained between each of the base stations 20B, 21B, 22B and the mobile station 30B, the control device 10B obtains the position information of the mobile station 30B.

Here, a typical configuration of the base stations 20B, 21B and 22B will be described in detail. FIG. 21 shows Embodiment 6
FIG. 22 is a block diagram illustrating a main part of a control device 10B according to a sixth embodiment. Base station 20B, 2 according to the sixth embodiment
1B and 22B correspond to the base station 2A according to the second embodiment.
Embodiment 5 described above in place of reception level detecting section 23 of FIG.
The configuration is such that a delay measurement unit 28 (see FIG. 21) similar to the delay measurement unit 50 is provided, and the mobile station information storage unit 27 is omitted. Further, the control device 10B has a configuration in which a distance conversion database 15 (see FIG. 22) similar to the distance conversion database 51 of the fifth embodiment is newly added. Further, the mobile station 30A, the base station 20B, 2
Although not shown, 1B and 22B have an antenna structure which is not limited to a directional antenna.

Next, the operation will be described. FIG. 23 is a flowchart illustrating a system operation according to the sixth embodiment. The entire operation according to the flowchart shown in FIG. 23 is performed by the control unit 12 of the control device 10B and the base station 2
0B, 21B, 22B control unit 25, mobile station 30B C
Each operation is controlled by the PU 40, but the individual operations are performed in the control device 10B, the base stations 20B, 21B, 22B, the mobile station 3
This is performed in each unit in OB.

In the radio communication system shown in FIG. 20, mobile station 30A moving in zones Z21, Z22 and Z23 formed by base stations 20B, 21B and 22B respectively starts radio wave reception. First, the control device 10
B determines the position of the mobile station 30B by using each base station 2
0B, 21B and 22B to control the mobile station 30B
(Step B41). When the mobile station 30B receives radio waves from the base stations 20B to 22B, the mobile station 30B transmits the radio waves to each base station 2 in accordance with the reception timing.
0B to 22B (step M41). In each of the base stations 20B, 21B, and 22B, when the radio wave is received, the delay amount Δω is obtained by the above-described delay measuring unit 28, so that the delay time in the mobile station 30B is measured (calculated) (step B42). .

In each of the base stations 20B, 21B, and 22B, the delay time obtained by the above measurement is transmitted to the control device 10B as a measurement result for the mobile station 30B (step B43). At this time, the control device 10B receives the measurement result from each of the base stations 20B, 21B, and 22B (step C41). The control device 10B converts the delay time for each base station into a distance by referring to the distance conversion database 15. Based on this distance, areas where the mobile stations are located centering on the base stations 20A, 21A and 22A are obtained, intersections of these areas are obtained, and position information for specifying the intersections as the location of the mobile station 30B is obtained. (Step C42). Thereafter, in the control device 10B, the position information of the mobile station 30B obtained as described above is stored in the storage unit 14 so as to be identifiable as the position information of the mobile station 30B (step C).
43).

As described above, according to Embodiment 6, each base station measures the delay time from the transmission / reception timing of the radio wave to the mobile station, so that each base station measures the delay time. A special signal such as a unique word is not required, thereby reducing the load on the operation of the system and preventing troubles such as communication disconnection.

Further, since the position information of the mobile station is calculated based on the measurement result (including the delay time) held by the base station by one of the base station and the control device, the system configuration and the system operation are reduced. It is possible to easily and reliably determine the position of the mobile station under simplified conditions.

(Embodiment 7) In Embodiment 3 described above, the position of the mobile station is obtained by measuring the electric field strength. However, as in Embodiment 7 described below,
The delay time may be measured without measuring the electric field strength. In the seventh embodiment, a method using a wireless transmission clock will be described as an example of a method of measuring a delay time.

FIG. 24 is a configuration diagram showing a radio communication system according to the seventh embodiment of the present invention. The wireless communication system shown in FIG. 24 includes, for example, a plurality of base stations 20C, 21
C, 22C and the control unit 10C for controlling the mobile station 30C and determining the position of the mobile station 30C.
A plurality of base stations 20A, 21A, and 22A that transmit radio waves to the mobile station 30C after receiving radio waves from the base station, and receive radio waves from each of the base stations 20A, 21A, and 22A after transmitting the radio waves to measure a delay time; The mobile station 30A sends the measurement result to the control device 10C through the representative base station.

The control device 10C has a distance conversion database 15 similarly to the control device of the fifth embodiment. This control device 10C includes base stations 20C, 2
1C and 22C are communicated through wired communication, while the mobile station 30C is communicated through wireless communication to control the entire system and to access the base stations 20B, 21B and 2C.
The position of the mobile station 30C is obtained based on the measurement result (delay time) transmitted from the base station 20C, which is a representative of 2B.

Base stations 20C, 21C and 22C have the same configuration as the base station of the fifth embodiment. Base station 20
C, 21C, and 22C transmit radio waves in accordance with the timing of reception from the mobile station 30C, respectively, and also have radio wave ranges having predetermined radii, ie, zones Z31 and Z31.
Z32 and Z33 are formed. The representative base station 2
0C transfers the measurement result (delay time) transmitted from the mobile station 30C to the control device 10C.

The mobile station 30C has the configuration of the mobile station 30A according to Embodiment 5 described above, but the distance conversion database 51 is omitted because the mobile station 30C does not obtain its own position. The mobile station 30C includes zones Z31, Z32,
Z33, the base station 20
Radio waves transmitted from C, 21C, and 22C are received, the delay time of signal arrival from each of the base stations 20C, 21C, and 22C to its own station is measured, and the measured delay time is used as a representative base station. Send to 20C. In Embodiment 7, the mobile station 30C is mounted on a mobile device such as an automobile, but may be a mobile phone, a portable information terminal, or the like.

In the example shown in FIG. 24, the location of the mobile station 30C is determined by the zones Z31 and Z3 of the base stations 20C and 22C.
2 and is out of the service area of the zone Z32 by the base station 21AC. For example, zone Z3
Within 1, each base station 20C, 21C, 22C transmits radio waves, that is, radio signals WL31, WL32, WL33, according to the timing of reception from the mobile station 30C.
In this case, the mobile station 30C transmits the radio signals WL31, WL3
2, WL33, and the difference from the arrival time of the radio signals WL31, WL32, WL33 after the radio wave transmission of the own station is measured based on the delay amount of the transmission / reception clock. As a result, based on the delay time obtained between each of the base stations 20C, 21C and 22C and the mobile station 30C, the control device 10C sets the mobile station 3
The position information of 0C is obtained.

Next, the operation will be described. FIG. 25 is a flowchart illustrating a system operation according to the seventh embodiment. The entire operation according to the flowchart shown in FIG. 18 is controlled by the control units 25 of the base stations 20A, 21A, and 22A and the CPU 40 of the mobile station 30A, but the individual operations are performed in the base stations 20A, 21A, and 22A. This is performed in each unit in the mobile station 30A.

In the radio communication system shown in FIG. 24, mobile station 30C moving in zones Z31, Z32, and Z33 formed by base stations 20C, 21C, and 22C respectively starts radio wave reception. First, the control device 10
C controls the mobile station 30C so that the base station 20C
Radio waves are transmitted to C, 21C and 22C (step M51). Upon receiving the radio wave from the mobile station 30C, the base stations 20C to 22C transmit the radio wave to the mobile station 30C in synchronization with the reception timing (step B51). Upon receiving the radio wave (step M).
52), since the delay amount Δω is obtained by the above-described delay measurement unit 50, the delay time is measured (calculated) corresponding to each of the base stations 20C, 21C, and 22C (step M53).

In the mobile station 30C, the delay time obtained by the above measurement is transmitted as a measurement result to the representative base station 20C (step M53). At this time, the base station 20C
Transfers the measurement result transmitted from the mobile station 30C to the control device 10C as it is (step B52). Thereby, the control device 10C receives the measurement result from the base station 20C (step C51).

The control device 10C converts the delay time for each base station into a distance by referring to the distance conversion database 15. Based on this distance, areas where the mobile stations are located centering on the base stations 20C, 21C, and 22C are obtained, intersections of these areas are obtained, and position information specifying the intersections as the location of the mobile station 30C is obtained. (Step C52). Thereafter, in the control device 10C, the position information of the mobile station 30C obtained as described above is stored in the storage unit 14 as the position information of the mobile station 30C so as to be identifiable (step C53).

As described above, according to Embodiment 7, mobile station 30C has base stations 20C, 21C, and 2C.
Since the delay time is measured from the transmission / reception timing of the radio wave to the 2C and the measurement result is transmitted to the representative base station 20C, no special signal such as a unique word is required for the mobile station 30C to measure the delay time. As a result, it is possible to reduce the load on the operation of the system and prevent problems such as disconnection of communication.

[0160] Either the representative base station 30C or the control device 10C may use the representative base station 30C.
If the position information of the mobile station 30C is calculated based on the measurement result (including the delay time) held by the mobile station 30C, the position of the mobile station 30C can be easily and reliably obtained under the condition that the system configuration and the system operation are simplified. It is possible.

(Embodiment 8) In Embodiment 4 described above, the position of the mobile station is obtained by measuring the electric field strength. However, as in Embodiment 8 described below,
The delay time may be measured without measuring the electric field strength. In the eighth embodiment, a method using a wireless transmission clock will be described as an example of a method of measuring a delay time.

FIG. 26 is a configuration diagram showing a wireless communication system according to the eighth embodiment of the present invention. The wireless communication system shown in FIG. 26 includes, for example, a plurality of base stations 20D, 21
D, 22D and a control device 10D for controlling the mobile station 30D, a plurality of base stations 20D, 21D, 22D for receiving a radio wave from the mobile station 30D, measuring the delay time, and transferring the measurement result to the control device 10B. , Base stations 20D, 21
The mobile station 30D receives a measurement result (delay time) from a representative base station among the base stations D and 22D and obtains its own position.

The control device 10D has the same configuration as that of the fourth embodiment. The control device 10D includes the base station 20
D, 21D, and 22D communicate with each other through wired communication, while communicating with the mobile station 30D through wireless communication, thereby controlling the entire system and controlling each base station 20D.
After collecting the measurement results (delay times) transmitted from D, 21D, and 22D, the collected measurement results are transmitted to mobile station 30D via a representative base station, for example, base station 20D.

The base stations 20D, 21D, and 22D have the same configuration as the base station of the sixth embodiment. The base stations 20D, 21D, and 22D receive the radio waves transmitted from the mobile station 30D after transmitting the radio waves, respectively, and
The delay time of signal arrival from D to its own station is measured, and the delay time is transferred to the control device 10D as a measurement result. Further, the base stations 20D, 21D, and 22D each have a radio wave range having a predetermined radius, that is, the zones Z41 and Z41.
42 and Z43 are formed. Also, the representative base station 20D
Transmits all measurement results transmitted from the control device 10D to the mobile station 30D.

The mobile station 30D has the same configuration as that of the above-described fifth embodiment. However, since the mobile station 30D does not measure the delay time by itself, the delay measuring unit 50 and the distance conversion database 51 are omitted. The mobile station 30D is connected to each base station 20D, 2
Radio waves are transmitted according to the timing of reception from the 1D and 22D, and the position of the own station is obtained based on all measurement results transmitted from the representative base station 20D. In addition,
In the eighth embodiment, the mobile station 30D is mounted on a mobile device such as an automobile, but may be a mobile phone, a portable information terminal, or the like.

In the example shown in FIG. 26, the location of the mobile station 30D is determined by the zones Z41 and Z4 of the base stations 20D and 22D.
3 and is out of the service area of the zone Z42 by the base station 21D. For example, zone Z41
Within the mobile station 30D, each of the base stations 20D, 21
Radio waves, that is, radio signals WL41, WL42, and WL43 are transmitted in accordance with the reception timing from D and 22D.
In this case, each of the base stations 20D, 21D, and 22D receives the radio signals WL41, WL42, and WL43, respectively, and
Radio signals WL41, WL42, WL after radio wave transmission of own station
The difference from the arrival time at 43 is measured based on the delay amount of the transmission / reception clock. The delay time obtained between each of the base stations 20D, 21D, 22D and the mobile station 30D is temporarily collected as a measurement result in the control device 10D, and thereafter, the mobile station is transmitted by the wireless signal WL44 via the representative base station 20D. 30D
Sent to As a result, the mobile station 30D itself obtains position information based on the delay time.

Next, the operation will be described. FIG. 27 is a flowchart illustrating a system operation according to the eighth embodiment. The entire operation according to the flowchart shown in FIG. 27 is performed by the control unit 12 of the control device 10D and the base station 2
0D, 21D, 22D control unit 25, mobile station 30B C
Each operation is controlled by the PU 40, but the individual operations are performed in the control device 10B, the base stations 20B, 21B, 22B, the mobile station 3
This is performed in each unit in OB.

In the radio communication system shown in FIG. 26, mobile station 30D moving in zones Z41, Z42, and Z43 formed by base stations 20D, 21D, and 22D respectively starts radio wave reception. First, the control device 10
D determines each base station 2 to determine the location of mobile station 30D.
Radio waves are transmitted from 0D, 21D, and 22D to mobile station 30D (step B61). When receiving the radio wave from the base stations 20D to 22D, the mobile station 30D transmits the radio wave to each of the base stations 20D to 22D in synchronization with the reception timing (step M61). Each base station 20D, 21D,
In 22D, when the radio wave is received, the delay amount Δω is obtained by the above-described delay measurement unit 28, so that the delay time in the mobile station 30D is measured (calculated) (step B6).
2).

In each of the base stations 20D, 21D, and 22D, the delay time obtained by the above measurement is transmitted to the control device 10D as a measurement result for the mobile station 30D (step B53). At this time, the control device 10D receives the measurement results from each of the base stations 20D, 21D, and 22D (step C61), so that all the measurement results are collected. Thereafter, all the measurement results collected by the control device 10D are transmitted to the representative base station 20D by the control device 10D (step C62), and are directly transferred to the mobile station 30D by the representative base station 20D (step B6).
4).

[0170] The mobile station 30D converts the delay time for each base station into a distance by referring to the distance conversion database 51. Base station 2 based on this distance
The areas where the mobile stations are located centering on 0D, 21D, and 22D are determined, and the intersection of these areas is determined.
Position information specifying the intersection as the location of the mobile station 30D is obtained (step M62).

As described above, according to Embodiment 8, each base station 20D, 21D, 22D measures the delay time from the transmission / reception timing of the radio wave to mobile station 30D, and control device 10D controls each base station. 20D, 2
Since the measurement results of 1D and 22D are collected, all the measurement results are transferred to the mobile station 30D through the representative base station 20D, and the mobile station 30D calculates the position information of the own station based on all the measurement results. , Each base station 20D, 21D,
In 22D, a special signal such as a unique word is not required for measuring the delay time, thereby reducing the load on system operation and preventing problems such as communication disconnection. It can be determined easily and reliably.

(Embodiment 9) In Embodiment 1 described above, only the position of the mobile station is obtained by measuring the electric field strength. However, as in Embodiment 9 described below, The measurement of the delay time according to the fifth embodiment may be added. In the following description, only the configuration and operation different from the first embodiment will be described.

FIG. 28 is a block diagram showing a main part of a mobile station according to Embodiment 9 of the present invention. As shown in FIG. 28, the mobile station according to the ninth embodiment has a configuration in which a delay measuring unit 50 is added to the configuration of the mobile station 3A shown in FIG. 2 as in the above-described fifth embodiment. As described above, since the mobile station includes the reception level detection unit 34 and the delay measurement unit 50, it is possible to measure the direction and the delay time at which the electric field intensity becomes strongest by receiving the radio wave.

Next, the operation will be described. FIG. 29 is a flowchart illustrating a system operation according to the ninth embodiment. In the wireless communication system according to the ninth embodiment, a mobile station moving in a zone formed by base station 2A starts radio wave reception. First, the mobile station transmits its own radio wave to the base station 2A in order to determine the position of the mobile station (step M71). Upon receiving the radio wave from the mobile station, the base station 2A transmits the radio wave to the mobile station in synchronization with the reception timing (step B73). At this time, the mobile station controls the antenna driving unit 32 to drive the directional antenna 31, and measures the azimuth at which the electric field intensity becomes the highest (step M73). Further, in the mobile station, the delay amount Δω is simultaneously measured by the delay measuring unit 50 described above.
Thus, the delay time at the base station 2A is measured (calculated) (step M74).

In the mobile station, although not shown, if a distance conversion database 51 is prepared as in the above-described sixth embodiment, the delay for each base station is obtained by referring to the distance conversion database 51. Time is converted to distance. Based on this distance, an area centered on the base station 2A is determined (step M75). In this area, position information of the mobile station is calculated based on the positional relationship between the base station 2A and the mobile station based on the direction. (Step M76).
At this time, the specific position of the mobile station can be determined on a prepared map based on the position information, for example (step M77).

As described above, according to the ninth embodiment, the mobile station measures the azimuth of the received electric field while measuring the electric field strength in transmission / reception to / from base station 2A, and delays the transmission / reception timing of the radio wave. Since the time is measured and the position of the own station is calculated based on the measurement result, only one base station is required in the system, which simplifies the system configuration and system operation, and also enables the mobile station. No special signal such as a unique word is required for delay time measurement, which can reduce the load on system operation and prevent problems such as communication disconnection, so that the mobile station can easily position itself. And it is possible to find it reliably.

(Embodiment 10) In Embodiment 2 described above, only the position of the mobile station is obtained by measuring the electric field strength. The measurement of the delay time according to the sixth embodiment described above may be added. In the following description, only the configuration and operation different from the second embodiment will be described.

FIG. 30 is a block diagram showing a main part of a base station according to Embodiment 10 of the present invention. Embodiment 10
30 has a configuration obtained by adding a delay measuring unit 28 to the configuration of the base station 2B shown in FIG. 7 as shown in FIG. As described above, the base station includes the reception level detection unit 23 and the delay measurement unit 28, so that it is possible to measure the azimuth at which the electric field intensity becomes strongest by receiving radio waves and the delay time. Since the control device is a combination of the second and sixth embodiments, it is not shown, but the distance conversion database 15 and the position calculation database 13 are used as databases.
And

Next, the operation will be described. FIG. 31 is a flowchart illustrating a system operation according to the tenth embodiment. In the wireless communication system according to the tenth embodiment, mobile station 3B moving in a zone formed by base stations starts radio wave reception. First, in order to obtain the position of the mobile station 30B, the control device controls the base station to transmit radio waves from the own station to the mobile station 3B (step B81). Upon receiving the radio wave from the base station, the mobile station 3B transmits the radio wave to each of the base stations 20B to 22B in synchronization with the reception timing (step M81).

At this time, the base station starts radio wave reception (step B82), and measures the azimuth at which the electric field intensity is the highest while driving and controlling the antenna (step B8).
3). Further, in the base station, the delay amount Δω is obtained by the above-described delay measuring unit 28 at the same time as this measurement.
Is measured (calculated) in (step B8)
4).

At the base station, the azimuth and the delay time of the strongest radio field intensity obtained by the above measurement are transmitted to the control device as a result of measurement for the mobile station 3B (step B).
85). At this time, the control device receives the measurement result from the base station (step C81), and refers to the distance conversion database 15 and the position calculation database 13 to determine the delay time of the transmission / reception timing between the base station and the mobile station 3B. Is converted to a distance. Based on this distance, an area where the mobile station 3B is located, centered on the base station, is obtained. In this area, the position information of the mobile station is calculated based on the positional relationship between the base station and the mobile station 3B based on the direction. Is performed (step C82). Thereafter, in the control device, the position information of the mobile station 3B obtained as described above is stored in the storage unit 14 so as to be identifiable as the position information of the mobile station 3B (step C83).

As described above, according to Embodiment 10, the base station transmits and receives data to and from mobile station 3B.
Since the azimuth of the received electric field is measured while measuring the electric field strength, and the delay time is measured from the transmission / reception timing of the radio wave, only one base station is required in the system, thereby reducing the system configuration and system operation. In addition to the simplification, a special signal such as a unique word is not required for measuring the delay time at the base station, thereby reducing the load on the system operation and preventing problems such as communication disconnection.

If the position information of the mobile station is calculated by either the base station or the control device based on the measurement result (including the azimuth of the highest electric field strength and the delay time) held by the base station, the system configuration In addition, the system operation can be simplified, and the position of the mobile station can be easily and reliably obtained under conditions that reduce the load on the system operation and prevent problems such as communication disconnection.

(Embodiment 11) In the above-described Embodiment 3, only the position of the mobile station is obtained by measuring the electric field strength. The measurement of the delay time according to the above-described seventh embodiment may be added. In the following description, only the configuration and operation different from the third embodiment will be described.

Embodiment 11 is different from Embodiment 9 described above.
Since the configuration of the mobile station according to the third embodiment is applied and the configuration of the control device according to the above-described tenth embodiment is applied, there is no difference in configuration from the third embodiment, and therefore only the operation will be described below. FIG. 32 is a flowchart illustrating a system operation according to the eleventh embodiment of the present invention.

In the radio communication system according to the eleventh embodiment, a mobile station moving in a zone formed by base station 2C starts radio wave reception. First, the control device 1C
Controls the mobile station to transmit radio waves from itself to the base station 2C (step M91). Upon receiving the radio wave from the mobile station, the base station 2C transmits the radio wave to the mobile station in synchronization with the reception timing (step B91).

At this time, the mobile station starts radio wave reception (step M92), and measures the azimuth at which the electric field intensity is the highest while controlling the antenna (step M9).
3). Further, in the mobile station, the delay amount Δω can be obtained by the above-described delay measuring unit 50 simultaneously with this measurement.
Is measured (calculated) in (step M9)
4).

In the mobile station, the azimuth of the strongest electric field strength and the delay time obtained by the above measurement are transmitted to the base station 2C as a measurement result (step M95). At this time,
The base station 2C transfers the measurement result transmitted from the mobile station to the control device 1C as it is (step B92). As a result, the control device receives the measurement result from base station 2C, and obtains the location information of the mobile station as in Embodiment 10 described above.

As described above, according to Embodiment 11, the mobile station transmits and receives data to and from base station 2C.
Since the direction of the received electric field is measured while measuring the electric field strength, the delay time is measured from the transmission / reception timing of the radio wave, and the measurement result is transmitted to the base station.
Only one base station is required on the system, which simplifies the system configuration and operation,
The mobile station does not need a special signal such as a unique word for measuring the delay time, thereby reducing the load on system operation and preventing problems such as communication disconnection.

Also, the position information of the mobile station may be calculated based on the measurement result (including the azimuth of the strongest electric field and the delay time) held by the base station 2C by either the base station 2C or the control device. As a result, the system configuration and operation can be simplified, and the position of the mobile station can be easily and reliably obtained under conditions that reduce the load on system operation and prevent problems such as communication interruption. is there.

(Embodiment 12) In Embodiment 4 described above, only the position of the mobile station is obtained by measuring the electric field strength. However, as in Embodiment 12 described below, The measurement of the delay time according to Embodiment 8 described above may be added. In the following description, only the configuration and operation different from the fourth embodiment will be described.

Embodiment 12 is different from Embodiment 9 described above.
Since there is no difference in the configuration from the third embodiment except that the configuration of the mobile station is applied, only the operation will be described below. Since the mobile station is a combination of Embodiment 4 and Embodiment 8, the mobile station includes a distance conversion database 51 and a position calculation database 43 as databases, not shown. Therefore, only the operation will be described. FIG. 33 is a flowchart illustrating a system operation according to the twelfth embodiment of the present invention.

In the radio communication system according to the twelfth embodiment, a mobile station moving in a zone formed by base stations starts radio wave reception. First, the control device causes the base station to transmit radio waves to the mobile station in order to determine the position of the mobile station (step B101). Upon receiving the radio wave from the base station, the mobile station transmits the radio wave to the base station in synchronization with the reception timing (step M101). At this time, the base station starts radio wave reception (step B1).
02) While controlling the driving of the antenna, the azimuth at which the electric field intensity is highest is measured (step B103). Further, at the base station, the delay amount Δω is obtained by the above-described delay measuring unit 28 at the same time as the measurement, so that the delay time at the mobile station is measured (calculated) (step B104).

In the base station, the azimuth and the delay time with the strongest electric field strength obtained by the above-described measurement are transmitted to the control device as the measurement result for the mobile station (step B10).
5). At this time, after receiving the measurement result from the base station (step C101), the control device sets the measurement result to:
The data is transmitted to the base station (step C102), and is directly transferred to the mobile station by the base station (step B106).

The mobile station converts the delay time of the base station into a distance by referring to the distance conversion database 51 and the position calculation database 43. Based on this distance, an area where the mobile station around the base station is located is obtained, and in this area, the position information of the mobile station is calculated based on the positional relationship between the base station and the mobile station based on the azimuth. (Step M102).

As described above, according to Embodiment 12, in transmission and reception to and from a mobile station, the base station measures the direction of the received electric field while measuring the electric field strength, and determines the delay time from the transmission and reception timing of the radio wave. Measure
The control device collects the measurement result of the base station, transfers the measurement result to the mobile station through the base station, and calculates the position information of the own station based on the measurement result in the mobile station. In addition, only one base station is required, which simplifies the system configuration and system operation, and eliminates the need for a special signal such as a unique word for delay time measurement at the base station. Since the load can be reduced and a trouble such as communication disconnection can be prevented, the position of the mobile station itself can be easily and reliably obtained.

(Thirteenth Embodiment) In the fifth to twelfth embodiments, the delay time is determined within one clock. However, as in the thirteenth embodiment described below, the delay It may be determined at the frame timing.

Therefore, a method of using frame timing will be described. FIG. 34 is a timing chart illustrating a delay time according to the thirteenth embodiment of the present invention. In the thirteenth embodiment, the base station (mobile station) causes the mobile station (base station) to temporarily receive the phase of the transmission frame timing and the frame timing, and uses the base station (mobile station) at the frame timing synchronized with the received frame timing. Station)
The phase is compared with the reception frame timing reproduced from the transmitted signal. The delay time is obtained from the delay amount Δω obtained by this phase comparison.

For example, as shown in FIG. 34, a radio propagation delay occurs between the transmission frame timing at which radio waves are transmitted from the mobile station and the reception frame timing at which the base station receives the radio waves. Conversely occurs between the transmission frame timing at which radio waves are transmitted from the base station and the reception frame timing at which the mobile station receives the radio waves.

In the thirteenth embodiment, the base station uses the frame timing for delay time measurement instead of immediately transmitting the radio wave back to the mobile station at the time of receiving the radio wave from the mobile station. At the reception timing of the radio wave, give a delay time according to the electric field strength of the radio wave,
Thereafter, radio waves are transmitted to the mobile station. As described above, by using a large unit of delay time between the mobile station and the base station, it is not necessary to strictly measure the delay time, and the measurement itself becomes easy.

As described above, according to the thirteenth embodiment, since the delay time is measured by comparing the frame timings of the transmitted and received radio waves, it is not necessary to manage the delay time in clock units. As a result, the measurement error is eliminated, and the restriction on the zone radius of the radio wave transmitted from the base station can be eliminated.

(Embodiment 14) In Embodiment 5 described above, the unit of the delay time is handled by a clock. However, as a specific example of Embodiment 13 described above, the following embodiment will be described. As in the fourteenth embodiment, it may be handled in frame units.

In the fourteenth embodiment, in the radio communication system according to the fifth embodiment,
A, 21A, and 22A may be configured to give a delay time to radio wave transmission to the mobile station at frame timing by hardware (delay circuit) or software (program). Here, only the operation will be described.
FIG. 35 is a flowchart illustrating an operation of the base station according to Embodiment 14 of the present invention.

When each base station receives a radio wave from the mobile station 30A (step B111), the base station gives a delay time at the frame timing according to the received electric field value, that is, the received electric field strength from the received frame timing at that time (step B1).
12) After the delay, the radio wave is transmitted to the mobile station 30A at the transmission frame timing (step B113).

As described above, according to the fourteenth embodiment, mobile station 30A measures the delay time from the transmission / reception timing of radio waves to each base station, and calculates its own position based on the measurement result. In each base station, after receiving a radio wave from the mobile station 30A, the radio wave is sent back to the mobile station with a delay time corresponding to the electric field strength at the time of receiving the radio wave. This makes it easy to measure the delay time of each base station and eliminates restrictions on the zone radius of the base station.

(Embodiment 15) In Embodiment 6 described above, the unit of the delay time is handled by the clock. However, as in Embodiment 15 described below, the delay time is handled by the frame. It may be.

In the fifteenth embodiment, mobile station 30B in the radio communication system according to the sixth embodiment described above.
May be configured to give a delay time to radio wave transmission to each of the base stations 20B, 21B, 22B at frame timing by hardware (delay circuit) or software (program). Here, only the operation will be described. FIG. 36 is a flowchart illustrating the operation of the base station according to Embodiment 15 of the present invention.

The mobile station is connected to each of the base stations 20B, 21B, 22
When a radio wave is received from B (step M111), a delay time is given at the frame timing according to the reception electric field value, that is, the reception electric field strength from the reception frame timing at that time (step M112). Radio waves are transmitted to 20B, 21B and 22B (step M113).

As described above, according to the fifteenth embodiment, each base station 20B, 21B, 22B measures the delay time from the transmission / reception timing of the radio wave to the mobile station, and in the mobile station, the base station 20B, 21B, 22B
After receiving the radio wave from the mobile station, the radio wave is sent back to the mobile station with a delay time corresponding to the electric field strength at the time of reception, so that the system can take the delay time in large units. It is possible to easily measure the delay time of the station and eliminate the restriction on the zone radius of the base station.

[0210] Further, in a system that takes a delay time according to the electric field strength, the base station 20B, 21B, 22B and the control device 1
0B, the position information of the mobile station is calculated based on the measurement result held by the base station, so that the position of the mobile station can be easily and reliably determined under the condition that the zone radius of the base station is not limited. It is possible to ask for.

(Embodiment 16) In Embodiment 7 described above, the unit of the delay time is handled by the clock. However, as in Embodiment 16 described below, the delay time is handled by the frame. It may be.

[0212] In the sixteenth embodiment, each base station 20 in the radio communication system according to the seventh embodiment described above.
C, 21C, and 22C may be configured to give a delay time to radio wave transmission to the mobile station at frame timing by hardware (delay circuit) or software (program). Here, only the operation will be described.

As in the operation according to the above-described fourteenth embodiment (see FIG. 35), when each base station receives a radio wave from mobile station 30C, each base station responds to the reception electric field value, that is, the reception electric field strength from the reception frame timing at that time. Then, a delay time is given at a frame timing, and after the delay, a radio wave is transmitted to the mobile station 30C at a transmission frame timing.

As described above, according to the sixteenth embodiment, in mobile station 30C, the delay time is measured from the transmission / reception timing of radio waves to each base station, and the measurement result is sent to any one of a plurality of base stations. After receiving the radio wave from the mobile station 30C at each base station, the base station transmits the radio wave back to the mobile station 30C with a delay time according to the electric field strength at the time of reception. Can be taken in large units, whereby the measurement of the delay time of each base station is facilitated, and a wireless communication system capable of eliminating the restriction on the zone radius of the base station is obtained.

Further, in a system that takes a delay time according to the electric field strength, the position information of the mobile station is calculated based on the measurement result held by the base station by either the base station or the control device. In addition, the position of the mobile station can be easily and reliably obtained under the condition that the zone radius of the base station is not limited.

(Embodiment 17) In Embodiment 8 described above, the unit of the delay time is handled by the clock. However, as in Embodiment 17 described below, the delay time is handled by the frame. It may be.

In the seventeenth embodiment, in the wireless communication system according to the above-described eighth embodiment, mobile station 30D
May be configured to give a delay time to radio wave transmission to each of the base stations 20D, 21D, and 22D at frame timing by hardware (delay circuit) or software (program). Here, only the operation will be described.

The mobile station is connected to each base station 20D, 21D, 22
When a radio wave is received from D, a delay time is given at a frame timing according to the reception electric field value, that is, the reception electric field strength from the reception frame timing at that time, and after the delay, each of the base stations 20D, 21D, and 22D at the transmission frame timing.
Transmit radio waves to.

As described above, according to the seventeenth embodiment, each base station 20D, 21D, 22D measures the delay time from the transmission / reception timing of the radio wave to / from the mobile station, and the control device causes each base station 20D, 21D, 22D to measure the delay time. 21D, 22
D, and collects all the measurement results to the mobile station through the representative base station.
After receiving radio waves from D, 21D and 22D, the radio waves are sent back to the mobile station with a delay time corresponding to the electric field strength at the time of reception, and the position information of the own station is calculated based on all the measurement results from the control device. As a result, the delay time can be set in a large unit on the system, thereby making it easy to measure the delay time of the mobile station and eliminating the restriction on the zone radius of the base station. .

(Embodiment 18) In Embodiment 9 described above, the unit of the delay time is handled by the clock. However, as in Embodiment 18 described below, the delay time is handled by the frame. It may be.

According to the eighteenth embodiment, in the radio communication system according to the ninth embodiment, the base station is delayed by a hardware (delay circuit) or software (program) to radio wave transmission to a mobile station at frame timing. What is necessary is just to make it the structure which gives time. Here, only the operation will be described.

In the same manner as in the operation of the fourteenth embodiment described above (see FIG. 35), when receiving a radio wave from a mobile station, the base station determines a frame based on the received electric field value, that is, the received electric field strength from the received frame timing at that time. A delay time is given at a timing, and after the delay, a radio wave is transmitted to the mobile station at a transmission frame timing.

As described above, according to the eighteenth embodiment, in transmission and reception to and from the base station, the mobile station measures the direction of the received electric field while measuring the electric field strength, and determines the delay time from the transmission and reception timing of the radio wave. Measure
The position of the own station is calculated based on the measurement result, and the base station receives the radio wave from the mobile station, and then returns the radio wave to the mobile station with a delay time according to the electric field strength at the time of reception. Therefore, the delay time can be set in a large unit in the system, which makes it easy to measure the delay time of the base station and eliminates the limitation on the zone radius of the base station.

(Nineteenth Embodiment) In the tenth embodiment, the unit of the delay time is handled by the clock. However, as in the nineteenth embodiment described below, the delay time is handled by the frame. It may be.

According to the nineteenth embodiment, in the radio communication system according to the tenth embodiment, the mobile station is delayed by a hardware (delay circuit) or software (program) to radio wave transmission to a base station at frame timing. What is necessary is just to make it the structure which gives time. here,
Only the operation will be described.

When the mobile station receives a radio wave from the base station,
From the reception frame timing at that time, a delay time is given at the frame timing according to the reception electric field value, that is, the reception electric field strength, and after the delay, the radio wave is transmitted to each base station at the transmission frame timing.

As described above, according to the nineteenth embodiment, the base station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and determines the delay time from the transmission and reception timing of the radio wave. Measure
Since the mobile station receives the radio wave from the base station and then sends the radio wave back to the mobile station with a delay time according to the electric field strength at the time of reception, the system can take a large delay time in the system. This makes it possible to easily measure the delay time of the mobile station and eliminate the restriction on the zone radius of the base station.

Also, in a system that uses one base station to take a delay time according to the electric field strength, the position information of the mobile station is determined based on the measurement result held by the base station by one of the base station and the control device. Is calculated, the position of the mobile station can be easily and reliably obtained under conditions where there is no restriction on the zone radius of the base station.

(Embodiment 20) In Embodiment 11 described above, the unit of the delay time is handled by the clock. However, as in Embodiment 20 described below, the delay time is handled by the frame. It may be.

In the twentieth embodiment, in the radio communication system according to the eleventh embodiment, the base station is delayed by the hardware (delay circuit) or the software (program) to radio wave transmission to the mobile station at frame timing. It is sufficient to provide a configuration that gives time, and the main operation is the same as that of the above-mentioned eighteenth embodiment.

As described above, according to the twentieth embodiment, in transmission and reception to and from the base station, the mobile station measures the direction of the received electric field while measuring the electric field strength, and determines the delay time from the transmission and reception timing of the radio wave. Measure
The measurement result is transmitted to the base station, and after the base station receives the radio wave from the mobile station, the radio wave is sent back to the mobile station with a delay time corresponding to the electric field strength at the time of the reception. , The delay time can be taken in a large unit, whereby the measurement of the delay time of the base station becomes easy, and the restriction on the zone radius of the base station can be eliminated.

Also, in a system in which one base station is used to take a delay time according to the electric field strength, the position information of the mobile station is determined based on the measurement result held by the base station by one of the base station and the control device. Is calculated, the position of the mobile station can be easily and reliably obtained under conditions where there is no restriction on the zone radius of the base station.

(Embodiment 21) In the twelfth embodiment, the unit of the delay time is handled by the clock. However, as in the following embodiment 21, the delay time is handled by the frame. It may be.

In the twenty-first embodiment, in the wireless communication system according to the twelfth embodiment, the mobile station is delayed by a hardware (delay circuit) or software (program) to radio wave transmission to a base station at frame timing. It is sufficient to provide a configuration for giving time, and the main operation is the same as in the nineteenth embodiment described above, so that the description thereof will be omitted.

As described above, according to the twenty-first embodiment, in transmission / reception to / from a mobile station, the base station measures the direction of the received electric field while measuring the electric field strength, and determines the delay time from the transmission / reception timing of the radio wave. Measure
In the control device, the measurement result of the base station is collected, the measurement result is transferred to the mobile station through the base station, and the mobile station receives a radio wave from the base station, and then delays according to the electric field strength at the time of reception. And send the radio wave back to the mobile station,
Since the position information of the own station is calculated based on the measurement result from the control device, the delay time can be set in a large unit on the system, and thus the measurement of the delay time of the mobile station becomes easy. At the same time, it is possible to eliminate restrictions on the zone radius of the base station.

Although the embodiments described above do not limit the modulation / demodulation method for the wireless communication section, the present invention provides the time division multiple access (TDM
A), the frequency division multiple access (FDM)
A), Code division multiple access (CDMA) according to Embodiment 24
And the like.

(Embodiment 22) In the embodiment 22,
A case where time division multiple access (TDMA) is applied as a modulation method will be described. Here, only the operation of the time division multiple access will be described. FIG. 37 is a timing chart illustrating a transmission / reception operation according to the twenty-second embodiment of the present invention. FIG. 37 shows an example in which time division multiplex access is applied to the fifth embodiment. This is referred to as a twenty-second embodiment.

As shown in FIG. 37, 1 on the same frequency
The frame is divided into three time slots, and the base stations 20A, 21A, and 22A are assigned to each time slot, so that the mobile station 30A can time-divide the base stations 20A, 21A, and 21A.
The transmission signal from 22A is received.

As described above, according to the twenty-second embodiment, since the modulation / demodulation method based on the time division multiple access is applied to the wireless communication, the frequency can be effectively used by the same frequency and the frequency can be reduced to one frequency. Cost can be reduced by simplifying the corresponding system configuration.

(Twenty-third Embodiment) In the twenty-third embodiment,
A case where frequency division multiple access (FDMA) is applied as a modulation scheme will be described. Here, only the operation of frequency division multiple access will be described. FIG. 38 is a timing chart illustrating a transmission / reception operation according to Embodiment 23 of the present invention. FIG. 38 shows an example in which frequency division multiple access is applied to the fifth embodiment. This is referred to as a twenty-third embodiment.

As shown in FIG. 38, each base station 20A,
The radio channels of 21A and 22A are connected to different radio frequencies f.
By setting a, fb, and fc, the mobile station 30A receives transmission signals from the base stations 20A, 21A, and 22A for each frequency.

As described above, according to the twenty-third embodiment, since the modulation / demodulation method based on frequency division multiple access is applied to wireless communication, the addition of a control device is reduced, for example, the timing control by the control device becomes unnecessary. It is possible.

(Embodiment 24) In Embodiment 24,
A case where code division multiple access (CDMA) is applied as a modulation scheme will be described. In the code division multiple access according to the present invention, even if the same radio frequency is used, different codes are assigned to the respective base stations, thereby performing channel separation between communication and measurement.

To realize the twenty-fourth embodiment, it is necessary to provide two types of receiving systems, for example, a telephone call and a measurement. Therefore, a mobile station according to Embodiment 24 will be described. FIG. 39 is a block diagram showing a main part of a mobile station according to Embodiment 24 of the present invention. FIG. 39 shows an example in which code division multiple access is applied to the fifth embodiment. This is Embodiment 24.

As shown in FIG. 39, the mobile station according to the twenty-fourth embodiment uses a receiving system composed of an antenna and a radio unit for combining a combination of antenna 31A and radio unit 33A and a combination of antenna 31B and radio unit 33B. It consists of. If the former combination is used for communication, the latter combination is used for measurement, and the delay measuring unit 50 may be connected to the receiving system for this measurement.

Next, the operation will be described. FIG. 40 is a flowchart illustrating a receiving operation according to Embodiment 24 of the present invention. At the time of communication with the base station 2A, the mobile station makes a call at the frequency used for the call by the radio unit 33A and, at the same time, performs time division duplex (T
DD) method, each base station 20A, 21A,
The transmission signal from 22A is received.

As described above, according to the twenty-fourth embodiment, two different frequencies are used for the call and for the position calculation, so that the call is not interrupted. It is possible to obtain the position of the mobile station in a state where is continued.

(Embodiment 25) In Embodiments 5, 7, 14, and 16 described above, the mobile station scans all base stations in order to obtain measurement information for obtaining the position of the mobile station. However, as in the twenty-fifth embodiment described below, only the base station to be scanned may be scanned in accordance with an instruction from the control device.

Thus, only the operation will be described. FIG.
1 is a flowchart for explaining the operation of a mobile station according to Embodiment 25 of the present invention. In the mobile station, after the acquisition of the base station (step S21), the control device instructs the scanning frequency via radio (step 22), and the mobile station scans the radio wave with the instructed frequency (step S21).
23). In this way, the position information can be obtained directly from the required base station (step S2).
4). After this, if it is to be continued (step S2
5) The same processing may be repeated from step S23 again, and if not continued (step S25), the processing returns to step S21 again.

As described above, according to the twenty-fifth embodiment, since the control device instructs the mobile station to perform a wireless communication among a plurality of base stations through the wireless communication, the mobile station can perform the mobile communication. Stations scan base stations faster,
This makes it possible to quickly determine the position of the mobile station.

(Embodiment 26) As a countermeasure against radio wave non-sensing, a base station dedicated to non-sensing countermeasures may be installed as in Embodiment 26 described below.

Here, only the function of the radio communication system will be described. FIG. 42 is a schematic configuration diagram illustrating functions of a wireless communication system according to Embodiment 26 of the present invention. FIG. 42 (A) shows normal base stations 20E, 21E,
Zones Z51, Z52, Z53 by 22E and base station 2
A non-sensing countermeasure base station 23E installed adjacent to 1E is shown. The base station 23E for countermeasures against insensitivity forms a zone Z54.

As described above, the normal base stations 20E, 21
In the case where the base station 23E for non-sense measures is located near the base stations E and 22E, for example, the base station 21E (see FIG.
Mobile station 30E that cannot receive radio waves from the shaded area)
As shown in FIG. 42 (B), it is sufficient to switch the base station which communicates using the position information of the own station to the base station 23E for countermeasures against non-sensing (the hatched portion in the figure). Switching in this case is performed smoothly.

As described above, according to the twenty-sixth embodiment, when the electric field strength between the base station and the mobile station decreases, the base station that performs radio communication with the mobile station is changed from the base station to the base station for non-sensing measures. Since the switching is performed, it is possible to smoothly switch to a zone in which reception can be favorably performed according to the reception situation.

[0255]

As described above, according to the present invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength from the base station, and based on the measurement result, determines the position of the own station. Since the information is calculated, only one base station is required in the system, which simplifies the system configuration and system operation. Therefore, the mobile station can easily and reliably determine its own position. There is an effect that a possible wireless communication system is obtained.

According to the next invention, since the base station measures the direction of the received electric field while measuring the electric field strength from the mobile station, only one base station is required in the system. There is an effect that a wireless communication system capable of simplifying the system configuration and operation can be obtained.

According to the next invention, the mobile station measures the azimuth of the received electric field while measuring the electric field strength from the base station, and transmits the measurement result to the base station. Only one base station is required, thereby providing an effect of obtaining a wireless communication system capable of simplifying the system configuration and the system operation.

According to the next invention, the position information of the mobile station is calculated by one of the base station and the control device based on the measurement result (including the electric field strength) held by the base station. There is an effect that a wireless communication system capable of easily and reliably determining the position of the mobile station under the condition that the configuration and the system operation are simplified is obtained.

According to the next invention, the base station measures the direction of the received electric field while measuring the electric field intensity from the mobile station, transmits the measurement result to the mobile station, and the mobile station performs the measurement. Since the position information of the own station is calculated based on the result, only one base station is required in the system, which simplifies the system configuration and system operation. Is obtained in that a wireless communication system that can easily and reliably obtain the wireless communication system is obtained.

According to the next invention, the mobile station measures the delay time from the transmission / reception timing of radio waves to the base station, and calculates the position of the mobile station based on the measurement result. A special signal such as a unique word is not required for time measurement, which reduces the load on system operation and prevents problems such as communication disconnection, so that the mobile station can easily and reliably locate its own station. Is obtained.

According to the next invention, in each base station,
Since the delay time is measured from the transmission / reception timing of radio waves to the mobile station, a special signal such as a unique word is not required at each base station for delay time measurement, thereby reducing the load on system operation and There is an effect that a wireless communication system capable of preventing a trouble such as communication disconnection can be obtained.

According to the next invention, the mobile station measures the delay time from the transmission / reception timing of radio waves to the base station, and transmits the measurement result to any one of the plurality of base stations. Special signals such as unique words are not required for delay time measurement at stations,
As a result, it is possible to obtain a wireless communication system capable of reducing a load on system operation and preventing a trouble such as a communication disconnection.

According to the next invention, the position information of the mobile station is calculated by one of the base station and the control device based on the measurement result (including the delay time) held by the base station. There is an effect that a wireless communication system capable of easily and reliably determining the position of the mobile station under the condition that the configuration and the system operation are simplified is obtained.

According to the next invention, in each base station,
The delay time is measured from the transmission / reception timing of radio waves to the mobile station, the control device collects the measurement results of each base station, and transfers all the measurement results to the mobile station through the representative base station. The base station calculates the location information of the base station based on the base station, so that each base station does not need a special signal such as a unique word for delay time measurement, thereby reducing the load on system operation and disconnecting communication. Since such troubles can be prevented, it is possible to obtain a wireless communication system capable of easily and reliably obtaining the position of the mobile station itself.

According to the next invention, in transmission and reception to and from the base station, the mobile station measures the direction of the received electric field while measuring the electric field strength, and also measures the delay time from the transmission and reception timing of the radio wave. The position of the own station is calculated based on the base station, so that only one base station is required in the system. This simplifies the system configuration and system operation, and is unique to the mobile station for delay time measurement. Words and other special signals are not required, which reduces the load on system operation and prevents problems such as communication disconnections, so that the mobile station can easily and reliably determine its own position. There is an effect that a wireless communication system can be obtained.

According to the next invention, the base station measures the direction of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and measures the delay time from the transmission and reception timing of the radio wave. , The system requires only one base station, which simplifies the system configuration and system operation, and eliminates the need for a special signal such as a unique word for delay time measurement at the base station. This has the effect of providing a wireless communication system capable of reducing the operational load and preventing problems such as communication disconnection.

According to the next invention, in transmission and reception to and from the base station, the mobile station measures the direction of the received electric field while measuring the electric field strength, and also measures the delay time from the transmission and reception timing of the radio wave. Is transmitted to the base station, so that only one base station is required in the system, which simplifies the system configuration and system operation and allows the mobile station to use a special word such as a unique word for delay time measurement. Unnecessary signals
As a result, it is possible to obtain a wireless communication system capable of reducing a load on system operation and preventing a trouble such as a communication disconnection.

According to the next invention, the position information of the mobile station is calculated based on the measurement result (including the azimuth of the highest electric field strength and the delay time) held by one of the base station and the control device. The system configuration and system operation are simplified, and the position of the mobile station can be easily and reliably obtained under conditions that reduce the load on the system operation and prevent problems such as communication disconnection. There is an effect that a wireless communication system capable of performing the above is obtained.

According to the next invention, in transmission and reception to and from the mobile station, the base station measures the direction of the received electric field while measuring the electric field strength, and measures the delay time from the transmission and reception timing of the radio wave. Since the measurement result of the base station is collected, the measurement result is transferred to the mobile station through the base station, and the mobile station calculates the position information of the own station based on the measurement result.
Only one base station is required, which simplifies system configuration and system operation, and eliminates the need for a special signal such as a unique word for measuring the delay time at the base station. Since it is possible to reduce the number of troubles and to prevent problems such as communication disconnection, it is possible to obtain a wireless communication system capable of easily and reliably obtaining the position of the mobile station itself.

According to the next invention, the mobile station measures the delay time from the transmission / reception timing of the radio wave to the base station, calculates the position of the own station based on the measurement result, and in each base station, After receiving a radio wave, the radio wave is sent back to the mobile station with a delay time corresponding to the electric field strength at the time of reception. It is possible to obtain a wireless communication system capable of easily measuring the delay time of a station and eliminating restrictions on the zone radius of a base station.

According to the next invention, in each base station,
The delay time is measured from the transmission / reception timing of the radio wave to the mobile station, and after the mobile station receives the radio wave from the base station, the radio wave is sent back to the mobile station with a delay time corresponding to the electric field strength at the time of reception. Therefore, the delay time can be measured in a large unit on the system,
It is possible to easily measure the delay time of the mobile station and to obtain a wireless communication system capable of eliminating the restriction on the zone radius of the base station.

According to the next invention, the mobile station measures the delay time from the transmission / reception timing of radio waves to the base station, transmits the measurement result to any one of the plurality of base stations, and in each base station, After receiving a radio wave from the mobile station, the radio wave is sent back to the mobile station with a delay time according to the electric field strength at the time of reception, so the system can take the delay time in large units, ,
This makes it possible to easily measure the delay time of each base station and to obtain a wireless communication system capable of eliminating the restriction on the zone radius of the base station.

According to the next invention, in a system that takes a delay time according to the electric field strength, one of the base station and the control device calculates the position information of the mobile station based on the measurement result held by the base station. Therefore, it is possible to obtain a wireless communication system that can easily and reliably determine the position of the mobile station under conditions where there is no restriction on the zone radius of the base station.

According to the next invention, in each base station,
The delay time is measured from the transmission / reception timing of radio waves to the mobile station, the control device collects the measurement results of each base station, and transfers all the measurement results to the mobile station through the representative base station. After receiving radio waves from
The radio wave is sent back to the mobile station with a delay time according to the electric field strength at the time of reception, and the position information of the own station is calculated based on all the measurement results from the control device. It can be measured in large units, which makes it easy to measure the delay time of mobile stations,
This has the effect of providing a wireless communication system capable of eliminating restrictions on the zone radius of the base station.

According to the next invention, in transmission and reception to and from the base station, the mobile station measures the direction of the received electric field while measuring the electric field strength, and measures the delay time from the transmission and reception timing of the radio wave. After calculating the position of the own station based on the base station, the base station receives the radio wave from the mobile station, and then returns the radio wave to the mobile station with a delay time according to the electric field strength at the time of reception, so the system In addition, the delay time can be taken in a large unit, thereby making it possible to easily measure the delay time of the base station and obtain a wireless communication system capable of eliminating the restriction on the zone radius of the base station. To play.

According to the next invention, the base station measures the azimuth of the received electric field while measuring the electric field strength in transmission and reception to and from the mobile station, and measures the delay time from the transmission and reception timing of radio waves. After receiving the radio wave from the base station, the radio wave is sent back to the mobile station with a delay time according to the electric field strength at the time of reception, so that the system can take the delay time in large units. As a result, it is possible to easily measure the delay time of the mobile station and to obtain a wireless communication system capable of eliminating the restriction on the zone radius of the base station.

According to the next invention, in transmission and reception to and from the base station, the mobile station measures the direction of the received electric field while measuring the electric field strength, and measures the delay time from the transmission and reception timing of the radio wave. To the base station, and after the base station receives the radio wave from the mobile station,
Since the radio wave is sent back to the mobile station with a delay time corresponding to the electric field strength at the time of the reception, the delay time can be taken in a large unit in the system, thereby measuring the delay time of the base station. This makes it easier to obtain a wireless communication system capable of eliminating restrictions on the zone radius of the base station.

[0278] According to the next invention, in a system in which one base station is used to obtain a delay time according to the electric field strength, one of the base station and the control device can be used based on a measurement result held by the base station. Since the position information of the mobile station is calculated, it is possible to obtain a wireless communication system capable of easily and reliably obtaining the position of the mobile station under the condition where the zone radius of the base station is not limited.

[0279] According to the next invention, the base station measures the azimuth of the received electric field while measuring the electric field strength in transmission / reception to / from the mobile station, and measures the delay time from the transmission / reception timing of the radio wave. Collecting the measurement result of the base station, transferring the measurement result to the mobile station through the base station, and after receiving the radio wave from the base station, the mobile station takes a delay time according to the electric field strength at the time of reception. Since the radio wave is sent back to the mobile station and the position information of the own station is calculated based on the measurement result from the control device, the delay time can be set in a large unit in the system. This makes it possible to obtain a wireless communication system capable of easily measuring time and eliminating restrictions on the zone radius of the base station.

According to the next invention, since the delay time is measured by comparing the frame timings of the transmitted and received radio waves, it is not necessary to manage the delay time in clock units, thereby eliminating the measurement error. There is an effect that a wireless communication system that can perform the communication is obtained.

According to the next invention, since the modulation / demodulation method based on time division multiple access is applied to the wireless communication, the frequency can be effectively used by the same frequency, and the system configuration corresponding to one frequency can be simplified. Accordingly, it is possible to obtain a wireless communication system capable of reducing costs.

According to the next invention, since a modulation / demodulation method based on frequency division multiple access is applied to wireless communication, a wireless communication system capable of reducing the addition of a control device such as eliminating the need for timing control by the control device. Is obtained.

According to the next invention, two different frequencies are used for the call and for the position calculation, so that the call is not interrupted. There is an effect that a wireless communication system capable of determining the position of the wireless communication system is obtained.

[0284] According to the next invention, the control unit instructs the mobile station to perform a wireless communication among a plurality of base stations through the wireless communication, so that the mobile station scans the base station. This makes it possible to obtain a wireless communication system capable of quickly determining the position of the mobile station.

According to the next invention, when the electric field strength between the base station and the mobile station decreases, the base station that performs radio communication with the mobile station is switched from the base station to the base station for non-sensing measures. This has the effect of providing a wireless communication system that can smoothly switch to a zone in which reception can be satisfactorily performed according to the situation.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a wireless communication system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a mobile station according to the first embodiment.

FIG. 3 is a flowchart illustrating an operation of the mobile station according to the first embodiment.

FIG. 4 is a graph showing a relationship between a received electric field strength and an azimuth according to the first embodiment.

FIG. 5 is a diagram showing a display example of a mobile station according to the first embodiment.

FIG. 6 is a configuration diagram illustrating a wireless communication system according to a second embodiment of the present invention.

FIG. 7 is a block diagram showing an internal configuration of a base station according to a second embodiment.

FIG. 8 is a block diagram showing an internal configuration of a control device according to a second embodiment.

FIG. 9 is a flowchart illustrating a system operation according to the second embodiment.

FIG. 10 is a configuration diagram illustrating a wireless communication system according to a third embodiment of the present invention.

FIG. 11 is a flowchart illustrating a system operation according to the third embodiment.

FIG. 12 is a configuration diagram illustrating a wireless communication system according to a fourth embodiment of the present invention.

FIG. 13 is a block diagram showing a main part of a mobile station according to a fourth embodiment.

FIG. 14 is a flowchart illustrating a system operation according to the fourth embodiment.

FIG. 15 is a configuration diagram illustrating a wireless communication system according to a fifth embodiment of the present invention.

FIG. 16 is a block diagram showing a main part of a mobile station according to a fifth embodiment.

FIG. 17 is a block diagram showing another essential part of the mobile station according to the fifth embodiment.

FIG. 18 is a flowchart illustrating a system operation according to the fifth embodiment.

FIG. 19 is a timing chart illustrating a delay time according to the fifth embodiment.

FIG. 20 is a configuration diagram illustrating a wireless communication system according to a sixth embodiment of the present invention.

FIG. 21 is a block diagram showing a main part of a base station according to a sixth embodiment.

FIG. 22 is a block diagram showing a main part of a control device according to a sixth embodiment.

FIG. 23 is a flowchart illustrating a system operation according to the sixth embodiment.

FIG. 24 is a configuration diagram illustrating a wireless communication system according to a seventh embodiment of the present invention.

FIG. 25 is a flowchart illustrating a system operation according to the seventh embodiment.

FIG. 26 is a configuration diagram illustrating a wireless communication system according to an eighth embodiment of the present invention.

FIG. 27 is a flowchart illustrating a system operation according to the eighth embodiment.

FIG. 28 is a block diagram showing a main part of a mobile station according to Embodiment 9 of the present invention.

FIG. 29 is a flowchart illustrating a system operation according to the ninth embodiment.

FIG. 30 is a block diagram showing a main part of a base station according to Embodiment 10 of the present invention.

FIG. 31 is a flowchart illustrating a system operation according to the tenth embodiment.

FIG. 32 is a flowchart illustrating a system operation according to the eleventh embodiment of the present invention.

FIG. 33 is a flowchart illustrating a system operation according to a twelfth embodiment of the present invention.

FIG. 34 is a timing chart illustrating a delay time according to a thirteenth embodiment of the present invention.

FIG. 35 is a flowchart illustrating an operation of a base station according to Embodiment 14 of the present invention.

FIG. 36 is a flowchart illustrating an operation of a base station according to Embodiment 15 of the present invention.

FIG. 37 is a timing chart illustrating a transmission / reception operation according to the twenty-second embodiment of the present invention.

FIG. 38 is a timing chart illustrating a transmission / reception operation according to Embodiment 23 of the present invention.

FIG. 39 is a block diagram showing a main part of a mobile station according to Embodiment 24 of the present invention.

FIG. 40 is a flowchart illustrating a reception operation according to Embodiment 24 of the present invention.

FIG. 41 is a flowchart illustrating an operation of a mobile station according to Embodiment 25 of the present invention.

FIG. 42 is a schematic configuration diagram illustrating functions of a wireless communication system according to Embodiment 26 of the present invention.

FIG. 43 is a configuration diagram illustrating an example of a wireless communication system according to a conventional example.

FIG. 44 is a configuration diagram illustrating another example of a wireless communication system according to a conventional example.

[Explanation of symbols]

1A to 1D, 10A to 10D control device, 2A to 2D,
20A to 20E, 21A to 21E, 22A to 22E Base station, 3A to 3D, 30A to 30E Mobile station, 11 and 12
6 communication unit, 12, 25 control unit, 13, 43 position calculation database, 15, 51 distance conversion database, 23E base station for non-sense measures, 2131A, 31B
Antenna, 22, 33, 33A, 33B radio section, 2
3, 34 reception level detection unit, 28, 50 delay measurement unit,
31 directional antenna, 32 antenna driver, 40 C
PU, 41 ROM, 42 RAM, 37 display unit, 3
8 microphones, 39 speakers.

Claims (31)

[Claims] 1. A radio communication system for performing radio communication between the base station and the mobile station by transmitting radio waves from the base station to the mobile station, and controlling the mobile station and the base station by a control device. In the mobile station, receiving means for receiving a radio wave from the base station, measuring means for measuring the direction of the received electric field while measuring the electric field strength received by the receiving means, measurement of the measuring means A calculation means for calculating position information of the own station based on the result. 2. A wireless communication system for performing radio communication between the base station and the mobile station by transmitting radio waves from the mobile station to the base station, and controlling the mobile station and the base station by a control device. , Wherein the base station includes: a receiving unit that receives a radio wave from the mobile station; and a measuring unit that measures the direction of the received electric field while measuring the electric field intensity received by the receiving unit. A wireless communication system, characterized by: 3. A radio communication system for performing radio communication between the base station and the mobile station by transmitting radio waves from the base station to the mobile station, and controlling the mobile station and the base station by a control device. In the mobile station, receiving means for receiving a radio wave from the base station, measuring means for measuring the direction of the received electric field while measuring the electric field strength received by the receiving means, measurement of the measuring means And a transmitting means for transmitting a result to the base station. 4. The mobile station according to claim 1, wherein one of the base station and the control device calculates the position information of the mobile station based on a measurement result of the measurement unit held by the base station. 4. The wireless communication system according to 2 or 3. 5. A radio communication system for performing radio communication between the base station and the mobile station by transmitting radio waves from the mobile station to the base station, and controlling the mobile station and the base station by a control device. In the above, the base station, receiving means for receiving radio waves from the mobile station, measuring means for measuring the direction of the received electric field while measuring the electric field strength received by the receiving means, measurement of the measuring means Transmitting means for transmitting a result to the mobile station, wherein the mobile station receives the measurement result transmitted from the base station by the transmitting means, and transmits a result of the own station based on the measurement result. A wireless communication system for calculating position information. 6. A wireless communication system for performing wireless communication between a plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein the mobile station transmits to each of the base stations. Transmitting / receiving means for receiving a radio wave sent back from each of the base stations after transmitting the radio wave; measuring means for measuring an interval of transmission / reception timing of the radio wave by the transmitting / receiving means as a delay time; And a calculating means for calculating station position information, wherein each of the base stations transmits a radio wave to the mobile station after receiving the radio wave by the transmitting and receiving means. 7. A wireless communication system that performs wireless communication between a plurality of base stations and a mobile station and controls the mobile station and the plurality of base stations by a control device, wherein each of the base stations is connected to the mobile station. Transmitting and receiving means for receiving a radio wave transmitted back from the mobile station after transmitting the radio wave, and measuring means for measuring an interval between transmission and reception timings of the radio wave by the transmitting and receiving means as a delay time, wherein the mobile station comprises: A radio communication system comprising: transmitting radio waves to each of the base stations after receiving the radio waves from the base station by the transmission / reception means. 8. A wireless communication system for performing wireless communication between a plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein the mobile station transmits to each of the base stations. Transmitting and receiving means for receiving a radio wave sent back from each of the base stations after transmitting the radio wave, measuring means for measuring an interval of transmission and reception timing of the radio wave by the transmitting and receiving means as a delay time, and measuring the measurement result of the measuring means to the plurality of A transmission unit for transmitting to any one of the base stations; and wherein each of the base stations transmits a radio wave to the mobile station after receiving the radio wave by the transmission and reception unit. 9. The mobile station according to claim 1, wherein one of the base station and the control device calculates the position information of the mobile station based on a measurement result of the measurement means held by the base station. 9. The wireless communication system according to 7 or 8. 10. A wireless communication system for performing wireless communication between the plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein each of the base stations includes: Transmitting / receiving means for receiving a radio wave returned from the mobile station after transmitting the radio wave to the mobile station; andmeasuring means for measuring an interval between transmission / reception timings of the radio wave by the transmitting / receiving means as a delay time, wherein the control device comprises: Collection means for collecting measurement results of the measurement means by each base station, and transfer means for transferring the measurement results collected by the collection means to the mobile station through representative base stations of the plurality of base stations. The mobile station, after receiving radio waves from the base stations by the transmitting and receiving means, returns a radio wave to each of the base stations, and returns from the representative base station Wherein receiving the measurement result which has been transferred by the transfer means of the serial control device, a wireless communication system, characterized in that it has a calculation means for calculating the position information of the own station based on the measurement result. 11. A wireless communication system for performing wireless communication between a base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the mobile station transmits a radio wave to the base station. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and setting the time interval of radio wave transmission and reception by the transmitting and receiving means to a delay time Measuring means for measuring as, and calculating means for calculating position information of the own station based on the measurement result of the measuring means, wherein the base station transmits to the mobile station after receiving radio waves by the transmitting and receiving means. A wireless communication system for transmitting radio waves back. 12. A wireless communication system for performing wireless communication between a base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the base station transmits a radio wave to the mobile station. Transmitting and receiving means for receiving a radio wave sent back from the mobile station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and setting the time interval of transmission and reception of radio waves by the transmitting and receiving means to a delay time A wireless communication system, comprising: a measuring unit that measures the frequency of the mobile station; and wherein the mobile station transmits a radio wave to the base station after receiving the radio wave from the base station by the transmitting / receiving unit. 13. A wireless communication system for performing wireless communication between a base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the mobile station transmits a radio wave to the base station. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and setting the time interval of radio wave transmission and reception by the transmitting and receiving means to a delay time And a transmitting unit for transmitting a measurement result of the measuring unit to any one of the base stations, wherein the base station receives the radio wave by the transmitting / receiving unit and the mobile station. A radio communication system for transmitting radio waves back to a radio communication system. 14. The mobile station according to claim 1, wherein one of the base station and the control device calculates the position information of the mobile station based on a measurement result of the measurement unit held by the base station. 14. The wireless communication system according to 12 or 13. 15. A wireless communication system for performing wireless communication between the base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the base station transmits a radio wave to the mobile station. Transmitting and receiving means for receiving the radio wave transmitted back from the mobile station later, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval of the transmission and reception timing of the radio wave by the transmitting and receiving means Measuring means for measuring as time, the control device comprises: collecting means for collecting measurement results of the measuring means by the base station; and moving the measurement results collected by the collecting means through the base station. Transfer means for transferring to a station, wherein the mobile station receives the radio wave from the base station by the transmission / reception means, Return means for transmitting radio waves to the ground station; calculating means for receiving the measurement result transferred by the transfer means of the control device from the base station and calculating position information of the own station based on the measurement result A wireless communication system, comprising: 16. A wireless communication system for performing wireless communication between a plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein the mobile station transmits to each of the base stations. Transmitting / receiving means for receiving a radio wave sent back from each of the base stations after transmitting the radio wave; measuring means for measuring an interval of transmission / reception timing of the radio wave by the transmitting / receiving means as a delay time; Calculating means for calculating station position information, each of the base stations, after receiving a radio wave by the transmitting and receiving means, takes a delay time according to the electric field strength at the time of receiving the radio wave to the mobile station. Wireless communication system, wherein 17. A wireless communication system for performing wireless communication between a plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein each of the base stations is connected to the mobile station. Transmitting and receiving means for receiving a radio wave transmitted back from the mobile station after transmitting the radio wave, and measuring means for measuring an interval between transmission and reception timings of the radio wave by the transmitting and receiving means as a delay time, wherein the mobile station comprises: A radio communication system, comprising: receiving a radio wave from a base station by the transmission / reception means, and transmitting the radio wave back to each of the base stations with a delay time corresponding to the electric field strength at the time of reception. 18. A wireless communication system for performing wireless communication between a plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein the mobile station transmits to each of the base stations. Transmitting and receiving means for receiving a radio wave sent back from each of the base stations after transmitting the radio wave, measuring means for measuring an interval of transmission and reception timing of the radio wave by the transmitting and receiving means as a delay time, and measuring the measurement result of the measuring means to the plurality of Transmitting means for transmitting to any one of the base stations, wherein each of the base stations, after receiving a radio wave by the transmitting and receiving means, takes a delay time according to an electric field strength at the time of the reception to perform the movement. A radio communication system for transmitting radio waves back to a station. 19. The mobile station according to claim 1, wherein one of the base station and the control device calculates the position information of the mobile station based on a measurement result of the measurement unit held by the base station. 19. The wireless communication system according to 17 or 18. 20. A wireless communication system for performing wireless communication between the plurality of base stations and a mobile station and controlling the mobile station and the plurality of base stations by a control device, wherein each of the base stations includes: Transmitting / receiving means for receiving a radio wave returned from the mobile station after transmitting the radio wave to the mobile station; andmeasuring means for measuring an interval between transmission / reception timings of the radio wave by the transmitting / receiving means as a delay time, wherein the control device comprises: Collection means for collecting measurement results of the measurement means by each base station, and transfer means for transferring the measurement results collected by the collection means to the mobile station through representative base stations of the plurality of base stations. The mobile station, after receiving a radio wave from the base station by the transmitting and receiving means, taking a delay time according to the electric field strength at the time of receiving, to each of the base stations Replying means for transmitting a wave, Receiving the measurement result transferred by the transfer means of the control device from the representative base station, and calculating means for calculating position information of the own station based on the measurement result, A wireless communication system comprising: 21. A radio communication system for performing radio communication between a base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the mobile station transmits a radio wave to the base station. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and setting the time interval of radio wave transmission and reception by the transmitting and receiving means to a delay time And a calculating means for calculating the position information of the own station based on the measurement result of the measuring means, wherein the base station receives a radio wave by the transmitting / receiving means, And transmitting a radio wave back to the mobile station with a delay time corresponding to the electric field strength of the radio communication system. 22. A wireless communication system for performing wireless communication between a base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the base station transmits a radio wave to the mobile station. Transmitting and receiving means for receiving a radio wave sent back from the mobile station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and setting the time interval of transmission and reception of radio waves by the transmitting and receiving means to a delay time The mobile station, after receiving a radio wave from the base station by the transmitting and receiving unit, takes a delay time according to the electric field strength at the time of reception, and transmits the radio wave to the base station. A wireless communication system for sending back. 23. A wireless communication system for performing wireless communication between a base station and a mobile station and controlling the mobile station and the base station by a control device, wherein the mobile station transmits a radio wave to the base station. Transmitting and receiving means for receiving a radio wave sent back from the base station, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and setting the time interval of radio wave transmission and reception by the transmitting and receiving means to a delay time And a transmitting unit for transmitting a measurement result of the measuring unit to any one of the base stations. The base station receives radio waves by the transmitting and receiving unit, and then receives the radio wave. A radio communication system for transmitting a radio wave back to the mobile station with a delay time corresponding to the electric field strength at the time. 24. The mobile station according to claim 24, wherein one of the base station and the control device calculates the position information of the mobile station based on a measurement result of the measurement unit held by the base station. 24. The wireless communication system according to 22 or 23. 25. In a wireless communication system that performs wireless communication between the base station and a mobile station and controls the mobile station and the base station by a control device, the base station transmits a radio wave to the mobile station. Transmitting and receiving means for receiving the radio wave transmitted back from the mobile station later, measuring the direction of the received electric field while measuring the electric field strength received by the transmitting and receiving means, and delaying the interval of the transmission and reception timing of the radio wave by the transmitting and receiving means Measuring means for measuring as time, the control device comprises: collecting means for collecting measurement results of the measuring means by the base station; and a representative base station of the base station for measuring results collected by the collecting means. Transfer means for transferring to the mobile station through a station, wherein the mobile station receives radio waves from the base station by the transmission / reception means Receiving means for returning a radio wave to the base station with a delay time according to the electric field strength at the time of reception, and receiving the measurement result transferred from the representative base station by the transfer means of the control device. And a calculating means for calculating the position information of the own station based on the measurement result. 26. The wireless communication system according to claim 16, wherein said measuring means measures a delay time by comparing frame timings of radio waves transmitted and received. 27. A modulation and demodulation method based on time division multiple access is applied to said wireless communication.
The wireless communication system according to any one of the above. 28. The wireless communication according to claim 6, wherein a modulation / demodulation method based on frequency division multiple access is applied.
26. The wireless communication system according to any one of 26. 29. The transmission / reception means according to claim 2, wherein two different frequencies are used, one of the frequencies is used for communication, and the other is used for position calculation.
9. The wireless communication system according to 8. 30. The mobile communication system according to claim 6, wherein the control device instructs the mobile station, among the plurality of base stations, a base station to be wirelessly communicated through wireless communication.
19. The wireless communication system according to any one of claims 6 and 18. 31. A base station for countermeasures against non-detection is installed, and a base station that performs radio communication with the mobile station when the electric field strength between the base station and the mobile station decreases is detected from the base station. 26. The wireless communication system according to claim 6, wherein the wireless communication system is switched to a countermeasure base station.