Wireless communication device, wireless communication method, and non-transitory computer readable medium
A wireless communication device includes: a position information database ( 207 ) in which map information is stored; a radio wave information acquisition unit ( 203 ) to extract a physical quantity of a communication radio wave received from a communication partner device; a position identification unit ( 210 ) to identify a position of the communication partner device on a basis of the physical quantity acquired by the radio wave information acquisition unit; and a determination unit ( 208 ) to collate the position of the communication partner device which is identified by the position identification unit, with the map information stored in the position information database, and to determine whether the communication partner device is an authorized device or an unauthorized device.
1 . A wireless communication device comprising:
a position information database in which map information is stored; and
processing circuitry
to extract a physical quantity of a communication radio wave received from a communication partner device,
to identify a position of the communication partner device on a basis of the acquired physical quantity, and
to collate the identified position of the communication partner device with the map information stored in the position information database, and to determine whether the communication partner device is an authorized device or an unauthorized device,
wherein the position information database stores a device position of the wireless communication device, as the map information, and
wherein the processing circuitry
extracts a phase of the communication radio wave, as the physical quantity,
estimates a distance to the communication partner device on a basis of the phase of the communication radio wave,
estimates a direction where the communication partner device exists on a basis of the phase of the communication radio wave, and
calculates the position of the communication partner device on a basis of the device position, the distance, and the direction.
2 . The wireless communication device according to claim 1 , comprising a plurality of antennas, wherein the processing circuitry finds the direction of the communication partner device with using phases obtained from the plurality of antennas.
3 . The wireless communication device according to claim 1 , comprising a single antenna, wherein the processing circuitry finds the direction of the communication partner device with using distances to the communication partner device which are measured at a plurality of points with the single antenna.
4 . The wireless communication device according to claim 1 , comprising a single antenna, wherein the processing circuitry finds the direction of the communication partner device with using reception radio wave intensities measured at a plurality of points with the single antenna.
5 . The wireless communication device according to claim 1 , wherein the processing circuitry updates the device position of the wireless communication device which is stored in the position information database.
6 . The wireless communication device according to claim 1 , wherein the processing circuitry registers, with an authorization list, a communication partner device determined as being an authorized device, and causes the communication partner device registered with the authorization list to continue communication.
7 . The wireless communication device according to claim 1 , wherein the processing circuitry calculates the position of the wireless communication device backwards from positions of a plurality of communication partner devices, and determines a position of a candidate for an unauthorized communication partner device on a basis of a backward calculation result.
8 . The wireless communication device according to claim 1 ,
wherein the processing circuitry
calculates a feature quantity of radio wave information, and
determines a class corresponding to the communication partner device by clustering the feature quantity, and attaches a device label to the communication partner device.
9 . The wireless communication device according to claim 1 ,
wherein the position information database stores an area boundary of an area where the communication partner device should exist, as the map information, and
wherein the processing circuitry collates the position of the communication partner device with the area boundary, and determines whether the communication partner device is an authorized device or an unauthorized device.
10 . The wireless communication device according to claim 1 , which, when there are a plurality of communication partner devices, identifies the communication partner devices by using the physical quantity.
11 . A wireless communication method comprising:
extracting a physical quantity of a communication radio wave received from a communication partner device;
identifying a position of the communication partner device on a basis of the physical quantity; and
collating the position of the communication partner device with map information stored in a position information database, and determining whether the communication partner device is an authorized device or an unauthorized device,
wherein the position information database stores a device position of a wireless communication device, as the map information,
the wireless communication method comprising:
extracting a phase of the communication radio wave, as the physical quantity; and
when identifying the position of the communication partner device,
estimating a distance to the communication partner device on a basis of the phase of the communication radio wave,
estimating a direction where the communication partner device exists on a basis of the phase of the communication radio wave, and
calculating the position of the communication partner device on a basis of the device position, the distance, and the direction.
12 . A non-transitory computer readable medium storing a program that causes a computer having a position information database in which a device position of a wireless communication device is stored as map information, to execute:
a radio wave information acquisition process of extracting a physical quantity of a communication radio wave received from a communication partner device;
a position identification process of identifying a position of the communication partner device on a basis of the physical quantity acquired by the radio wave information acquisition process; and
a determination process of collating the position of the communication partner device which is identified by the position identification process, with the map information stored in the position information database, and determining whether the communication partner device is an authorized device or an unauthorized device,
wherein the radio wave information acquisition process includes extracting a phase of the communication radio wave, as the physical quantity; and
wherein the position identification process includes
estimating a distance to the communication partner device on a basis of the phase of the communication radio wave,
estimating a direction where the communication partner device exists on a basis of the phase of the communication radio wave, and
calculating the position of the communication partner device on a basis of the device position, the distance, and the direction.