Title:
Radio communications system
Document Type and Number:
Japanese Patent JP6261701
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a radio communication system capable of stably performing radio communication without being influenced by power supply fluctuation or noise involved in control.SOLUTION: An upper-level radio communication device for transmitting a beacon at a prescribed cycle and a lower-level radio communication device for receiving the beacon perform communication via a common communication slot prescribed by the beacon. The upper-level and lower-level radio communication devices comprise clocking means for performing common clocking by repetitively clocking a clocking cycle from an initial value to a prescribed value on the basis of the beacon, and for determining timing of the control. They form the communication slot in a period excluding the transmission time period of the beacon and a prescribed period when communication is influenced by the control on the basis of a clocking value of the clocking means.SELECTED DRAWING: Figure 1
Inventors:
Hideki Morita
Application Number:
JP2016204959A
Publication Date:
January 17, 2018
Filing Date:
October 19, 2016
Export Citation:
Assignee:
Nomi Disaster Prevention Co., Ltd.
International Classes:
H04W56/00; G08B5/00; G08B25/10; G08B27/00
Domestic Patent References:
| JP2010049717A | ||||
| JP2005287282A | ||||
| JP2010211368A |
Foreign References:
| WO2012049806A1 |
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