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학술지 Guaranteeing Real-Time Services for Industrial Wireless Sensor Networks With IEEE 802.15.4
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저자
유성은, Poh Kit Chong, 김대영, 도윤미, Minh-Long Pham, 최은창, 허재두
발행일
201011
출처
IEEE Transactions on Industrial Electronics, v.57 no.11, pp.3868-3876
ISSN
0278-0046
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TIE.2010.2040630
협약과제
10MS2200, One-Service-Cross-Domain 지원을 위한 통합형 u-서비스 프레임워크 개발(표준화연계), 정영식
초록
Industrial applications of wireless sensor networks require timeliness in exchanging messages among nodes. Although IEEE 802.15.4 provides a superframe structure for real-time communication, a real-time message-scheduling algorithm is still required to schedule a large number of real-time messages to meet their timing constraints. We propose a distance-constrained real-time offline message-scheduling algorithm which generates the standard specific parameters such as beacon order, superframe order, and guaranteed-time-slot information and allocates each periodic real-time message to superframe slots for a given message set. The proposed scheduling algorithm is evaluated and analyzed extensively through simulations. In addition, a guaranteed time service is implemented in a typical industrial sensor node platform with a well-known IEEE 802.15.4-compliant transceiver CC2420 and ATmega128L to verify the feasibility of the guaranteed time service with the schedule generated by the proposed scheduling algorithm. Through experiments, we prove that the real system runs accurately according to the schedule calculated by the proposed algorithm. © 2010 IEEE.
키워드
Guaranteed time slot (GTS), industrial wireless sensor network (WSN), real-time communication, WSN
KSP 제안 키워드
Beacon order(BO), Guaranteed time slot(GTS), IEEE 802.15.4, Industrial Wireless Sensor Networks, Periodic real, Scheduling algorithm, Sensor node, Wireless sensor networks(WSNs), industrial applications, real-Time communication, real-time services