JP2002158606A - Position-calculating system for wireless connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position calculation system for wireless connection device, in a wireless LAN that calculates and displays an installed position of a wireless unit newly installed, depending on the position information of a fixed wireless unit. SOLUTION: This position calculation system for wireless connection device is provided with fixed wireless units, a wireless unit 1 that is newly installed to acquire communication error frequency information 8 through communication with the fixed wireless units, and a position calculation system 9 that calculates a distance between the fixed wireless units and the wireless unit 1, on the basis of position information 16 of the fixed wireless units and the communication error frequency information 8 so as to calculate the position of the wireless unit 1. The position calculation system 9 consists of a virtual area information provision section 11, that provides the output of virtual area information 12, related to virtual area 20; a position information provision section 15 that outputs positional information of the fixed wireless units; a communication error frequency distance conversion table 17 that converts the communication error frequency information 8 into distance conversion information 18 and provides the output of the information 18; and a position calculation section 10 that calculates the position of the wireless unit 1 on the basis of the distance conversion information 18, the virtual area information 12 and the position information 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for calculating the position of a wireless connection device in the field of wireless communication, and more particularly to a system for calculating a position of a wireless connection device based on a distance from a wireless device in which a plurality of installation locations are fixed. The present invention relates to a position calculation system for a wireless connection device that calculates the position of an installed new wireless device (or an additional wireless device).

[0002]

2. Description of the Related Art Conventionally, as a position calculation system of a wireless connection device, there have been a position calculation system using a PHS and a position calculation system using a GPS.

[0003] As for a position calculation system using a PHS, for example, Japanese Patent Application Laid-Open No. 08-322079 discloses a technique relating to a method of determining the installation of an additional base station in a PHS. A position calculation system using GPS, for example,
Japanese Unexamined Patent Application Publication No. 08-160118 discloses a technique relating to a position locating system for a moving object by the DGPS method.

[0004]

However, the conventional PHS
Is used in a wireless LAN,
Since new antennas and base stations are required, there is a problem that it cannot be constructed at low cost.

[0005] Further, the conventional position calculation system using GPS cannot be used indoors in a wireless LAN because it needs to receive position information from artificial satellites. In addition, there is a need to provide a function equivalent to GPS in a room to realize the function indoors, and there is a problem that the function cannot be realized at low cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a position calculation system for calculating a position (installation position) at a low cost without using an expensive dedicated system by diverting communication error frequency information with a wireless LAN device. .

[0007]

According to a first aspect of the present invention, there is provided a newly installed wireless device and a plurality of fixed wireless devices whose positions are fixed, the plurality of wireless devices being in proximity to the newly installed wireless device. The wireless communication system further includes a position calculation system that calculates a distance between the wireless communication device and the fixed wireless device to calculate a position of the new wireless device.

According to a second aspect of the present invention, there is provided a wireless communication system in which a new wireless device is newly installed in a wireless LAN in which a fixed wireless device having a fixed position is arranged. A position calculation system for a connection device, comprising: a position calculation system that calculates a position of the new wireless device, wherein the new wireless device communicates with a plurality of adjacent fixed wireless devices among the fixed wireless devices. Acquiring communication error frequency information and sending the communication error frequency information to the position calculation system, wherein the position calculation system communicates between the newly installed wireless device and the plurality of fixed wireless devices based on the communication error frequency information. Each distance is calculated, and the position of the new wireless device is calculated.

Further, according to a third aspect of the present invention, the position calculation system according to the first or second aspect,
It is characterized by being included in the new wireless device.

Further, according to a fourth aspect of the present invention, the plurality of fixed wireless devices according to the first and second aspects are located at a shortest distance from the newly installed wireless device. I do.

Further, the invention according to claim 5 of the present invention is characterized in that the number of the plurality of fixed wireless devices according to claim 1 or 2 is three or more.

Further, according to a sixth aspect of the present invention, the position calculation system according to the first or second aspect,
Virtual area information providing means for outputting virtual area information about a virtual area for determining the position of the new wireless device; position information providing means for inputting, processing and outputting position information of the plurality of fixed wireless devices; A communication error frequency / distance conversion table that converts the communication error frequency information and outputs it as distance conversion information; and a position of the new wireless device based on the distance conversion information, the virtual area information, and the position information of the plurality of fixed wireless devices. And position calculation means for calculating

[0013] Further, according to a seventh aspect of the present invention, the position calculation system according to the first or second aspect is characterized in that:
The distance between the plurality of fixed wireless devices and the newly-installed wireless device is defined as a radius, and a circle centered on the positions of the plurality of fixed wireless devices corresponding to the respective distances is drawn.
An intersection of the circumferences is calculated as a position of the newly installed wireless device.

Further, according to an eighth aspect of the present invention, the position calculation system according to the first or second aspect is characterized in that:
The distance between the plurality of fixed wireless devices and the newly installed wireless device is defined as a radius, and even if a circumference centered on the position of the plurality of fixed wireless devices corresponding to the respective distances is drawn, the circumference is not changed. If there is no intersection, the proportional correction is performed by multiplying each distance by a constant value so that the intersection is formed, and the intersection is calculated as the position of the new wireless device. .

Further, the invention according to claim 9 of the present invention is characterized in that, when the new wireless device according to claim 1 or 2 is installed near a wireless device newly installed next, The function of the plurality of fixed wireless devices is provided.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is characterized in that, in a wireless connection device position calculation system in a wireless LAN, the installation position of a newly installed wireless device is calculated and displayed from position information of a fixed wireless device. .

(Configuration) FIG. 1 is a configuration diagram showing an embodiment of a position calculating system for a wireless connection device according to the present invention. The position calculation system of the wireless connection device includes a newly installed wireless device 1 (newly installed wireless device) and a fixed wireless device A2.
, A fixed wireless device B4, a fixed wireless device C6, and a position calculation system 9.

The wireless device 1 is a wireless device newly installed in the wireless LAN (that is, a new wireless device), and is an object whose installation position is specified (calculated). Here, the wireless device 1 is a general term for devices that can be wirelessly connected, such as a PC or a printer.

The wireless device 1 performs wireless communication 3 with the fixed wireless device A2, calculates the frequency of the communication error, and uses the frequency of the communication error as communication error frequency information 8 with the fixed wireless device A2 to the position calculating system 9. Output. Also, the wireless device 1
Performs wireless communication 5 with the fixed wireless device B4, calculates the frequency of communication errors, and outputs information on the frequency of communication errors 8 with the fixed wireless device B4 to the position calculation system 9. Further, the wireless device 1 performs wireless communication 7 with the fixed wireless device C6, calculates the frequency of the communication error, and outputs the communication error frequency information 8 with the fixed wireless device C6 to the position calculation system 9.

The fixed wireless device A2, the fixed wireless device B4, and the fixed wireless device C6 are wireless devices arranged at fixed positions in the wireless LAN (that is, fixed wireless devices whose positions are fixed), and there are three or more. There are three fixed wireless devices that are close to the wireless device 1 to be measured. Fixed wireless device A2,
The fixed wireless device B4 and the fixed wireless device C6 may be located at the shortest distance from the wireless device 1. The number of fixed wireless devices for position detection is not limited to these three,
By using four or more fixed wireless devices, it is possible to improve the accuracy of position information. In some cases, two units are possible. Position information of the fixed wireless device for position detection is input to the position calculation system 9 in advance and is incorporated.

The fixed wireless device A2, the fixed wireless device B4, and the fixed wireless device C6 are devices that can be wirelessly connected.
There are three or more fixed wireless devices, three of which are close to the wireless device 1 whose position is to be measured, and their position information is already incorporated in the position calculation system 9. In this embodiment, communication error frequency information 8 is used as a means for calculating position information.

The position calculating system 9 calculates the position of the wireless device 1 from the position information 16 (see FIG. 2) of the fixed wireless devices A2, B4 and C6 in the wireless LAN. Provide a mechanism. The position calculation system 9 performs a communication error that the wireless device 1 acquires from the wireless device 1 by performing wireless communication 3, 5, and 7 with each fixed wireless device (the fixed wireless device A2, the fixed wireless device B4, and the fixed wireless device C6). From the frequency information 8, each fixed wireless device (fixed wireless device A
2. The distance from the fixed wireless device B4 and the fixed wireless device C6) is calculated, and the position of the wireless device 1 is specified (calculated). The position calculation system 9 is a software program for calculating a position, and is incorporated in the wireless device 1.

FIG. 2 is a block diagram of the position calculating system 9 of the position calculating system for the wireless connection device according to the present invention. The position calculation system 9 includes a position calculation unit 10, a virtual area information providing unit 11, a position information input unit 13, a position information providing unit 15, and a communication error frequency distance conversion table 17.

The position calculator 10 sends the communication error frequency information 8 sent from the wireless device 1 to the communication error frequency / distance conversion table 17 and receives the distance conversion information 18. The position of the wireless device 1 is calculated from the virtual area information 12, the position information 16, and the distance conversion information 18.

The virtual area information providing unit 11 receives the request from the position calculation unit 10 and passes the virtual area information 12 to the position calculation unit 10.

The position information input unit 13 is a fixed wireless device A
2. The position information of the fixed wireless devices B4 and C6 is to be input, and the basic position information 14 of the fixed wireless devices A2, B4 and C6 is output to the position information providing unit 15.

The position information providing unit 15 is a fixed wireless device A
2. Receives and stores the basic position information 14 of the fixed wireless device B4 and the fixed wireless device C6, and processes and processes the basic position information 14 according to the request from the position calculator 10 to the position calculator 10.
Position information 16 of fixed wireless device B4 and fixed wireless device C6
The position information 16 is output as information matching the request of the position calculation unit 10.

The communication error frequency distance conversion table 17 is
Receiving the communication error frequency information 8 from the position calculating unit 10;
It is converted into distance information and output to the position calculation unit 10 as distance conversion information 18. FIG. 4 is a communication error frequency distance conversion table (one example) in the position calculation system of the wireless connection device according to the present invention, and shows a conversion table of communication error frequency and distance.

FIG. 3 is an image diagram of a position calculating method in the position calculating system of the wireless connection device according to the present invention.

The virtual area 20 is a virtual area for determining a position. The origin 21 is an origin on the virtual area 20 for defining the position (installation position) of the fixed wireless devices (the fixed wireless device A2, the fixed wireless device B4, and the fixed wireless device C6).

The position 22 is the position of the fixed wireless device A2 on the virtual area 20. The position 23 is a position of the fixed wireless device B4 on the virtual area 20. Position 2
Reference numeral 4 denotes a position of the fixed wireless device C6 on the virtual area 20. The position 31 is the position of the wireless device 1 whose installation position is to be specified (calculated).

The circumference 25 is the position 22 of the fixed wireless device A2.
And a circle having a distance 28 as a radius. Circumference 2
6 is centered on the position 23 of the fixed wireless device B,
Is a circumference having a radius of. The circumference 27 is the fixed wireless device C
Is a circle having the center at the position 24 and the radius as the distance 30. The intersection of the circumferences 25, 26, and 27 is the position 31 of the wireless device 1.

If there are no intersections where the circumferences 25, 26 and 27 intersect, proportional correction is performed so that the circles 25, 26 and 27 intersect (distances 28, 29 and 30 are multiplied by a fixed value). You. In other words, the proportionally corrected circumferences 25, 26,
The intersection of 27 is the position 31 of the wireless device, and the position 31 of the wireless device from the origin 21 is known.

The distance 28 is the distance from the position 22 of the fixed wireless device A to the position 31 of the wireless device 1 calculated from the communication error frequency distance conversion table 17. The distance 29 is a distance from the position 23 of the fixed wireless device B to the position 31 of the wireless device 1 calculated from the communication error frequency distance conversion table 17. The distance 30 is a distance from the position 24 of the fixed wireless device C to the position 31 of the wireless device 1 calculated from the communication error frequency distance conversion table 17.

Although the configuration of the embodiment has been described in detail, the radio communication 3, the radio communication 5, and the radio communication 7 in FIG. 1 are well known to those skilled in the art and do not directly relate to the present invention. Therefore, the detailed configuration is omitted.

The calculation of the communication error frequency of the wireless device 1 shown in FIG. 1 is well known to those skilled in the art and is not directly related to the present invention, so that the detailed configuration is omitted.

(Operation) Next, the operation of FIG. 1 will be described. FIG.
, The wireless device 1 performs wireless communication 3 with the fixed wireless device A2, calculates communication error frequency information 8, and
It outputs the communication error frequency information 8 with the position calculation system 9 to the position calculation system 9. Further, the wireless device 1 performs wireless communication 5 with the fixed wireless device B4, calculates communication error frequency information 8, and outputs the communication error frequency information 8 with the fixed wireless device B4 to the position calculation system 9. Furthermore, the wireless device 1 is a fixed wireless device C
6 and wireless communication 7 to calculate communication error frequency information 8, and output the communication error frequency information 8 with the fixed wireless device C 6 to the position calculation system 9.

The position calculating system 9 includes a fixed wireless device A2
The communication error frequency information 8 with the fixed wireless device B4 and the communication error frequency information 8 with the fixed wireless device C6 are received. The operation of the position calculation system 9 will be described with reference to FIG.

In FIGS. 2 and 3, the position calculation unit 10
The virtual area information 12 is received from the virtual area information providing unit 11, and the virtual area 20 is developed.

The basic position information 14 of the fixed wireless devices A2, B4, and C6 is stored in the virtual area 20.
If you first create a, you must enter it first,
The position information of the fixed wireless device A2 from the position information input unit 13;
When the position information of the fixed wireless device B4 and the position information of the fixed wireless device C6 are input, the position information 14 of the fixed wireless device A2 and the position information 1 of the fixed wireless device B4 are sent to the position information providing unit 15.
4. Output the position information 14 of the fixed wireless device C6.

The position information providing unit 15 is provided with a fixed wireless device A2.
And the position information 14 of the fixed wireless device B4 and the position information 14 of the fixed wireless device C6 are received and stored.

The position calculation unit 10 issues a request to the position information providing unit 15, receives the position information 16 of the fixed wireless device A2, the position information 16 of the fixed wireless device B4, and the position information 16 of the fixed wireless device C6, and 20 on positions 22, 23,
24.

Upon receiving the communication error frequency information 8 with the fixed wireless device A2, the communication error frequency information 8 with the fixed wireless device B4, and the communication error frequency information 8 with the fixed wireless device C6, the position calculation unit 10 Frequency distance conversion table 1
7, distance conversion information 1 with fixed wireless device A2
8, upon receiving the distance conversion information 18 with the fixed wireless device B4 and the distance conversion information 18 with the fixed wireless device C6, a circumference 25 around the position 22 of the fixed wireless device A2 on the virtual area 20; A circumference 26 centered on the position 23 of the device B4 and a circumference 27 centered on the position 24 of the fixed wireless device C6 are drawn. The communication error frequency distance conversion table 17 is
Assume the example shown in FIG.

The position calculator 10 calculates the circumferences 25, 26, 27
If there is no intersection where all of
Proportional correction is performed so that an intersection point where all of 6 and 27 intersect is formed. As a result of this proportional correction, an intersection point where all of the circumference 25 of the fixed wireless device A2, the circumference 26 of the fixed wireless device B4, and the circumference 27 of the fixed wireless device C6 intersect is obtained. This intersection is the position 31 of the wireless device.

The number of newly installed wireless devices 1 increases,
When the wireless device 1 sequentially becomes a fixed wireless device and a large number of fixed wireless devices are arranged on the virtual area 20, a fixed wireless device near the newly added wireless device 1 is newly added. The fixed wireless device A2, the fixed wireless device B4, and the fixed wireless device C6 are responsible for the functions. The selection is made automatically or arbitrarily.

The present invention is not limited to the embodiment described above and shown in the drawings, but can be carried out by appropriately modifying it without departing from the scope of the invention. For example, in this embodiment, an example is described in which the number of wireless devices 1 is singular, but a plurality of wireless devices 1 may be provided. In addition, the new installation includes the expansion.

[0047]

As described above, the present invention has the following effects.

The first effect is that the configuration of the position calculation system of the wireless connection device according to the present invention uses a function which is conventionally provided as a standard in a wireless LAN device, and newly installed wireless device (new wireless device). ) Can be determined, so that an expensive dedicated system for position detection (position calculation) is not required.

The second effect is that the conventional position calculation system using the PHS has a problem that it cannot be constructed at low cost because a new antenna and a base station are required in a wireless LAN. Can be eliminated.

The third effect is that the problem in the conventional position calculation system using GPS can be solved.
In other words, since it is necessary to receive position information from an artificial satellite, it cannot be used indoors.
This eliminates the need to provide a function corresponding to the PS in the room.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a position calculation system for a wireless connection device according to the present invention.

FIG. 2 is a block diagram of a position calculation system of the wireless connection device position calculation system according to the present invention.

FIG. 3 is an image diagram of a position calculating method in the position calculating system of the wireless connection device according to the present invention.

FIG. 4 is a communication error frequency / distance conversion table (one example) in the position calculation system of the wireless connection device according to the present invention;

[Explanation of symbols]

 Reference Signs List 1 wireless device 2 fixed wireless device A 3, 5, 7 wireless communication 4 fixed wireless device B 6 fixed wireless device C 8 communication error frequency information 9 position calculating system 10 position calculating unit 11 virtual area information providing unit 12 virtual area information 13 position Information input unit 14 basic position information 15 position information providing unit 16 position information 17 communication error frequency distance conversion table 18 distance conversion information 20 virtual area 21 origin 22, 23, 24, 31 position 25, 26, 27 circumference 28, 29, 30 distance

Claims (9)

[Claims] 1. A new wireless device that is newly installed and calculates a distance between a plurality of fixed wireless devices that are close to the new wireless device among fixed wireless devices whose positions are fixed. A position calculation system for calculating a position of the wireless connection device. 2. A system for calculating the position of a wireless connection device when a new wireless device is installed in a wireless LAN in which a fixed wireless device whose position is fixed is arranged, A position calculating system for calculating a position of the newly installed wireless device, wherein the newly installed wireless device communicates with a plurality of adjacent fixed wireless devices among the fixed wireless devices to obtain communication error frequency information, and Sending error frequency information to the position calculation system,
The position calculation system calculates a distance between the new wireless device and the plurality of fixed wireless devices based on the communication error frequency information, and calculates a position of the new wireless device. Device position calculation system. 3. The position calculation system according to claim 1, wherein the position calculation system is included in the newly installed wireless device. 4. The system according to claim 1, wherein said plurality of fixed wireless devices are located at a shortest distance from said newly installed wireless device. 5. The position calculation system according to claim 1, wherein the number of the plurality of fixed wireless devices is three or more. 6. A virtual area information providing means for outputting virtual area information relating to a virtual area for determining a position of the new wireless device, and inputting position information of the plurality of fixed wireless devices. Position information providing means for processing and outputting, a communication error frequency distance conversion table for converting the communication error frequency information and outputting it as distance conversion information, the distance conversion information, the virtual area information, and the plurality of fixed radios. 3. The position calculation system for a wireless connection device according to claim 1, further comprising: position calculation means for calculating a position of the newly installed wireless device from position information of the device. 7. The position calculation system, wherein the radius of each of the plurality of fixed wireless devices and the new wireless device is a radius, and the positions of the plurality of fixed wireless devices corresponding to the respective distances are centered. The position calculation system for a wireless connection device according to claim 1, wherein a circle is drawn, and an intersection of the circles is calculated as a position of the new wireless device. 8. The position calculation system according to claim 1, wherein each of the distances between the plurality of fixed wireless devices and the newly installed wireless device is a radius, and the positions of the plurality of fixed wireless devices corresponding to the respective distances are centered. Even if the circumference is drawn, if there is no intersection where the circumference intersects, proportional correction is performed by multiplying each distance by a constant value so that the intersection is formed, and the intersection is set to the new radio 3. The position calculation system for a wireless connection device according to claim 1, wherein the position is calculated as a position of the device. 9. The wireless communication system according to claim 1, wherein when the new wireless device is installed near a wireless device that is newly installed next, the new wireless device takes on the functions of the plurality of fixed wireless devices. 3. The position calculation system for a wireless connection device according to item 2.