SENSOR SYSTEM, RADIO COORDINATED-RECEPTION SYSTEM, AND RADIO COORDINATED-RECEPTION METHOD

WIPO Patent Application WO/2021/005678

A1

Relay terminals (10) each transmit, to a control device (20), packets received from radio sensors (S) and reception intensities detected at times of the receptions of the packets and related to short-distance radio communications; only in a case of reception of response instructions from the control device (20), the relay terminals (10) each return responses related to the packets to the transmission-source radio sensors (S) that are the transmission sources of the packets; the control device (20) compares, among the reception intensities received from the relay terminals (10), the reception intensities related to a same packet transmitted from a same radio sensor (S) and received by the respective ones of multiple relay terminals (10); the control device (20) transmits a response instruction only to a single target relay terminal the reception intensity of which is the highest; and further the control device (20) relays and transfers sensor data stored in the packet received by the target relay terminal to a host device (H).　In this way, the multiple relay terminals (10) perform coordinated receptions of packets transmitted by use of short-distance radio communications.

MATSUNAGA KENICHI (JP)
OGASAWARA TAKAYUKI (JP)
TOGO HIROYOSHI (JP)

PCT/JP2019/026971

January 14, 2021

July 08, 2019

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NIPPON TELEGRAPH & TELEPHONE (JP)

H04W40/12; H04W4/38; H04W4/70; H04W84/10; H04W84/18

JP2014057171A	2014-03-27
JP2016036107A	2016-03-17
JP2012249166A	2012-12-13

YAMAKAWA, Shigeki et al. (JP)

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