상세정보
학술지
Guaranteeing Real-Time Services for Industrial Wireless Sensor Networks With IEEE 802.15.4
- 발행일
- 201011
- 출처
- IEEE Transactions on Industrial Electronics, v.57 no.11, pp.3868-3876
- ISSN
- 0278-0046
- 출판사
- IEEE
- 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.
- KSP 제안 키워드
- Beacon order(BO), IEEE 802.15.4, Industrial Wireless Sensor Networks, Periodic real, Scheduling algorithm, Sensor node, Static wireless sensor networks(WSNs), industrial applications, real-Time communication, real-time services, timing constraints