Title:
INTERFERENCE DETECTION DEVICE AND WIRELESS SIGNAL MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/154746
Kind Code:
A1
Abstract:
An interference detection device in a wireless system including a plurality of wireless sensors each for wirelessly transmitting sensor information, and a wireless signal measurement device for measuring power of a wireless signal of a frequency used for the transmission of the sensor information by each of the wireless sensors, the interference detection device being provided with: an information processing unit (110) for determining omission of reception of the sensor information transmitted from each of the wireless sensors; an interference position detection unit (130) for acquiring, from the wireless signal measurement device, a histogram that is created on the basis of the result of measurement in a predetermined power measurement period and indicates the time occupancy in the power measurement period of each of a plurality of classes of power values divided into a specified number of classes, comparing the acquired histogram and a histogram acquired in the past, and detecting the occurrence of interference around the wireless signal measurement device; and an interference avoidance method determination unit (140) for recording interference occurrence in each of the power measurement periods on a time-series basis on the basis of the detection result of the occurrence of interference by the interference position detection unit, and determining an interference avoidance method on the basis of the recording.
Inventors:
MIYAKE YUJI (JP)
AOYAMA TETSUYA (JP)
AOYAMA TETSUYA (JP)
Application Number:
PCT/JP2017/007330
Publication Date:
August 30, 2018
Filing Date:
February 27, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04B17/10; H04W24/08; H04B17/318; H04B17/345; H04W16/14
Foreign References:
| JP2015211317A | 2015-11-24 | |||
| JP2013074305A | 2013-04-22 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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