Wireless communication device, wireless communication method, and computer program product

• US 9,291,698 B2
• Filed: 11/07/2013
• Issued: 03/22/2016
• Est. Priority Date: 11/20/2012
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Watanabe, Tomoki, Kozakaya, Tatsuo, Okada, Ryuzo, Oba, Yoshihiro, Kanda, Mitsuru, Yoneyama, Seijiro, Tanaka, Yasuyuki, Murakami, Takaomi
• Primary Examiner(s): Li, Tracy
• Application Number:
  US14/074,050
• Publication Number:
  US 20140139663A1
• Time in Patent Office: 866 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G01S 11/06 using intensity measurements
• CPC Class Codes: G01S 13/04 Systems determining presence of a target based on relative movement of target G01S13/56
• CPC Class Codes: G01S 15/04 Systems determining presence of a target
• CPC Class Codes: G01S 5/0072 Transmission between mobile stations, e.g. anti-collision systems

Abstract

According to an embodiment, a wireless communication device includes a detector to detect a mobile object by referring to sensing information; a first communicating unit to communicate mobile object information, which is related to a detection result of the mobile object, with another wireless communication device; a first calculator to calculate a moving path of the mobile object between wireless communication devices by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device; a second communicating unit to communicate movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and a second calculator to calculate distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device.

Claims

1. A wireless communication device comprising:

a detector configured to detect a mobile object by referring to sensing information which is obtained by sensing a surrounding of the wireless communication device;

a first communicating unit configured to communicate mobile object information, which is related to a detection result of the mobile object, with another wireless communication device;

a first calculator configured to calculate a moving path of the mobile object between wireless communication devices including the wireless communication device by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device;

a second communicating unit configured to communicate movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and

a second calculator configured to calculate distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device.

2. The device according to claim 1, wherein the second calculator calculates the distances in such a way that, greater the number of times of movement in the moving path, the smaller is the distance, by referring to the calculated moving path and the movement information received from the other wireless communication device.

3. The device according to claim 1, further comprising:

a measuring unit configured to measure a radio field intensity of wireless communication performed with the other wireless communication device; and

a third communicating unit configured to communicate radio field intensity information, which is related to the radio field intensity, to the other wireless communication device, wherein

the second calculator calculates the distances in such a way that, weaker the radio field intensity of a moving path, the greater is the distance, by further referring to the calculated radio field intensity and radio field intensity information received from the other wireless communication device.

4. The device according to claim 1, further comprising:

a third calculator configured to, based on the calculated distances, calculate an optimal communication path in which communication between wireless communication devices is optimized; and

a switching unit configured to switch a communication path between wireless communication devices to the optimal communication path.

5. The device according to claim 4, wherein the optimal communication path is formed by connecting a communication path having a short distance between wireless communication devices performing communication with each other.

6. The device according to claim 1, wherein

the first calculator further calculates a moving time in the moving path,

the movement information is further related to the moving time, and

the second calculator, by referring to the calculated moving path and the movement information received from the other wireless communication device, tallies up the moving paths having the moving time less than a first threshold value so as to calculate the distances.

7. The device according to claim 1, wherein the second calculator sets, in same group, the wireless communication device or the other wireless communication device present in a moving path in which the number of times of movement of same mobile object is equal to or greater than a second threshold value and calculates, as the distances, Hamming distances of values used in group setting.

8. The device according to claim 1, wherein the sensing information is an image.

9. A server device comprising:

a communicating unit configured to, from each wireless communication device, receives sensing information obtained by sensing a surrounding of the each wireless communication device;

a detector configured to detect a mobile object from each of a plurality of pieces of the sensing information;

a first calculator configured to calculate a moving path of the mobile object between wireless communication devices by referring to a detection result of the mobile object; and

a second calculator configured to calculate distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path.

10. A wireless communication method implemented in a wireless communication device, the method comprising:

detecting, by a detector, a mobile object by referring to sensing information which is obtained by sensing a surrounding of the wireless communication device;

communicating, by a first communicating unit, mobile object information, which is related to a detection result of the mobile object, with another wireless communication device;

calculating, by a first calculator, a moving path of the mobile object between wireless communication devices including the wireless communication device by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device;

communicating, by a second communicating unit, movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and

calculating, by a second calculator, calculating distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device.

11. A computer program product comprising a computer readable medium including a computer program, wherein the program, when executed by a computer of a wireless communication device, causes the computer to perform:

detecting a mobile object by referring to sensing information which is obtained by sensing a surrounding of the wireless communication device;

communicating mobile object information, which is related to a detection result of the mobile object, with another wireless communication device;

calculating a moving path of the mobile object between wireless communication devices including the wireless communication device by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device, and;

communicating movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and

calculating distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device.