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학술지 Power-Efficient Beacon Recognition Method Based on Periodic Wake-Up for Industrial Wireless Devices
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저자
송순용, 이동훈, 장인국, 최진철, 손영성
발행일
201804
출처
Sensors, v.18 no.4, pp.1-17
ISSN
1424-8220
출판사
MDPI AG
DOI
https://dx.doi.org/10.3390/s18041237
협약과제
18ZH1100, 사물-사람-공간의 유기적 연결을 위한 초연결 공간의 분산 지능 핵심원천 기술, 손영성
초록
Energy harvester-integrated wireless devices are attractive for generating semi-permanent power from wasted energy in industrial environments. The energy-harvesting wireless devices may have difficulty in their communication with access points due to insufficient power supply for beacon recognition during network initialization. In this manuscript, we propose a novel method of beacon recognition based on wake-up control to reduce instantaneous power consumption in the initialization procedure. The proposed method applies a moving window for the periodic wake-up of the wireless devices. For unsynchronized wireless devices, beacons are always located in the same positions within each beacon interval even though the starting offsets are unknown. Using these characteristics, the moving window checks the existence of the beacon associated withspecified resources in a beacon interval, checks again for neighboring resources at the next beacon interval, and so on. This method can reduce instantaneous power and generates a surplus of charging time. Thus, the proposed method alleviates the problems of power insufficiency in the network initialization. The feasibility of the proposed method is evaluated using computer simulations of power shortage in various energy-harvesting conditions.
키워드
Beacon recognition, IEEE 802.15.4, Low-power, Wake-up
KSP 제안 키워드
Access point, Beacon Interval(BI), Charging time, Computer simulation(MC and MD), Energy Harvesting(EH), IEEE 802.15.4, Industrial environment, Industrial wireless, Instantaneous power, Low-Power, Periodic wake