RADIO-APPARATUS-DISPOSITION ESTIMATION DEVICE, ESTIMATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

• US 20170041740A1
• Filed: 08/01/2016
• Published: 02/09/2017
• Est. Priority Date: 08/04/2015
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: DOI, Yusuke, SAKAMOTO, Takafumi, KANAYAMA, Fumiaki
• Granted Patent: US 10,182,306 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/23 Indication means, e.g. displays, alarms, audible means
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04B 17/391 Modelling the propagation channel
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/246 where the output power of a terminal is based on a path parameter calculated in said terminal
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels

Abstract

According to an embodiment of the present invention, a radio-apparatus-disposition estimation device includes a processor configured to execute a program to provide at least: a first acquirer, a second acquirer, and a calculator. The first acquirer acquires first information concerning communication among a respective plurality of radio apparatuses or radio waves transmitted and received among the respective plurality of radio apparatuses. The second acquirer acquires setting position candidates of the plurality of radio apparatuses. The calculator calculates, on the basis of the first information and the setting position candidates, one or a plurality of estimated patterns in which setting positions of the radio apparatuses are identified as different ones of the setting position candidates.

Claims

1. A radio-apparatus-disposition estimation device comprising:

a processor configured to execute a program to provide at least;

a first acquirer to acquire first information concerning communication among a respective plurality of radio apparatuses or radio waves transmitted and received among the respective plurality of radio apparatuses;

a second acquirer to acquire setting position candidates of the plurality of radio apparatuses; and

a calculator to calculate, on the basis of the first information and the setting position candidates, one or a plurality of estimated patterns in which setting positions of the radio apparatuses are identified as different ones of the setting position candidates.

2. The radio-apparatus-disposition estimation device according to claim 1, wherein

the second acquirer further acquires radio wave propagation models related to the respective setting position candidates, and

the calculator calculates the one or the plurality of estimated patterns on the basis of the setting position candidates, the first information, and the radio wave propagation models.

3. The radio-apparatus-disposition estimation device according to claim 1, wherein

second information concerning a result of communication connection of a second radio apparatus, which is the radio apparatus, to a first radio wave output by a first radio apparatus, which is the radio apparatus, and third information concerning a result of communication connection of a third radio apparatus, which is the radio apparatus, to the first radio wave are included in the first information, and

the calculator calculates the one or the plurality of estimated patterns on the basis of the setting position candidates, the second information, and the third information.

4. The radio-apparatus-disposition estimation device according to claim 1, wherein

second information concerning a first radio wave, which enables communication connection to a second radio apparatus, which is the radio apparatus, and has a minimum output power value, among a plurality of output radio waves output by a first radio apparatus, which is the radio apparatus, and third information concerning a second radio wave, which enables communication connection to a third radio apparatus, which is the radio apparatus, and has a minimum output power value, among the plurality of output radio waves output by the first radio apparatus are included in the first information, and

the calculator calculates the one or the plurality of estimated patterns on the basis of the setting position candidates, the second information, and the third information.

5. The radio-apparatus-disposition estimation device according to claim 2, wherein

second information concerning output power of a first radio wave output by a first radio apparatus, which is the radio apparatus, and third information concerning received power of the first radio wave received by a second radio apparatus, which is the radio apparatus that receives the first radio wave, are included in the first information, and

the calculator estimates a distance between the first radio apparatus and the second radio apparatus on the basis of the second information, the third information, and the radio wave propagation models and calculates the one or the plurality of estimated patterns.

6. The radio-apparatus-disposition estimation device according to claim 5, wherein

the calculator determines, on the basis of a given probability density distribution function, a random value included in the radio wave propagation models and estimates the distance between the first radio apparatus and the second radio apparatus on the basis of the second information, the third information, and the radio wave propagation models.

7. The radio-apparatus-disposition estimation device according to claim 1, wherein

second information concerning a first radio wave output by a first radio apparatus, which is the radio apparatus, and third information concerning communication based on the first radio wave between the first radio apparatus and a second radio apparatus, which is the radio apparatus, are included in the first information, and

the calculator calculates, on the basis of the setting position candidates, a plurality of hypothetical patterns formed by combinations of the radio apparatuses and the setting position candidates, calculates a likelihood of the third information on the basis of a probability function given in advance including, as arguments, the second information, the third information, and distances between setting position candidates of the first radio apparatus and setting position candidates of the second radio apparatus in the hypothetical patterns, calculates a likelihood of the hypothetical patterns on the basis of the likelihood of the third information, and determines an estimated pattern on the basis of the likelihood of the hypothetical patterns.

8. The radio-apparatus-disposition estimation device according to claim 7, wherein

the second information is an output power value of the first radio wave, and

the third information is a result of a communication connection between the first radio apparatus and the second radio apparatus.

9. The radio-apparatus-disposition estimation device according to claim 1, wherein

second information concerning a first radio wave output by a first radio apparatus, which is the radio apparatus, and third information concerning the first radio wave received by a second radio apparatus, which is the radio apparatus, are included in the first information, and

the calculator calculates a plurality of hypothetical patterns on the basis of the setting position candidates, calculates a likelihood of the third information on the basis of the second information, the third information, and distances between setting position candidates of the first radio apparatus and setting position candidates of the second radio apparatus in the hypothetical patterns, calculates a likelihood of the hypothetical patterns on the basis of the likelihood of the third information, and determines an estimated pattern on the basis of the likelihood of the hypothetical patterns.

10. The radio-apparatus-disposition estimation device according to claim 9, wherein

the second information is an output power value of the first radio wave, and

the third information is a received power value of the first radio wave.

11. The radio-apparatus-disposition estimation device according to claim 1, further comprising:

a decider to select a fourth radio apparatus, a fifth radio apparatus, and a sixth radio apparatus out of the radio apparatuses and decide, on the basis of a given radio wave propagation model, an output power value of an output radio wave output from the fourth radio apparatus such that communication connection to the fifth radio apparatus can be performed but the communication connection to the sixth radio apparatus cannot be performed; and

a transmitter to transmit the output power value to the fourth radio apparatus.

12. The radio-apparatus-disposition estimation device according to claim 1, further comprising:

a decider to decide an instruction to cause a fourth radio apparatus, which is the radio apparatus, to increase an output power value until communication connection to a fifth radio apparatus, which is the radio apparatus, can be performed or reduce the output power value until the communication connection to the fifth radio apparatus cannot be performed; and

a transmitter to transmit the instruction to the fourth radio apparatus.

13. An estimation method executed by a computer, the estimation method comprising:

acquiring first information concerning communication among a respective plurality of radio apparatuses or radio waves transmitted and received among the respective plurality of radio apparatuses;

acquiring setting position candidates of the plurality of radio apparatuses; and

calculating, on the basis of the first information and the setting position candidates, one or a plurality of estimated patterns in which setting positions of the radio apparatuses are identified as different ones of the setting position candidates.

14. A non-transitory computer readable medium having a computer program stored therein which causes a computer when executed by the computer, to perform processes comprising:

acquiring first information concerning communication among a respective plurality of radio apparatuses or radio waves transmitted and received among the respective plurality of radio apparatuses;

acquiring setting position candidates of the plurality of radio apparatuses; and

calculating, on the basis of the first information and the setting position candidates, one or a plurality of estimated patterns in which setting positions of the radio apparatuses are identified as different ones of the setting position candidates.