An energy-conserving and collision-free MAC protocol based on TDMA for wireless sensor networks

Authors:
Biao Ren;Junfeng Xiao;Jian Ma;Shiduan Cheng
Affiliations:
State Key Laboratory of Networking and Switching, Beijing Univ. of Posts & Telecommunications, Beijing, China;State Key Laboratory of Networking and Switching, Beijing Univ. of Posts & Telecommunications, Beijing, China;Nokia Research Center, Beijing, China;State Key Laboratory of Networking and Switching, Beijing Univ. of Posts & Telecommunications, Beijing, China
Venue:
MSN'05 Proceedings of the First international conference on Mobile Ad-hoc and Sensor Networks
Year:
2005

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Abstract

This paper proposes TDMA-EC, a novel energy-conserving and collision-free media access control protocol based on TDMA principle. Through assigning separate time slots for neighboring nodes and resolving the “hidden terminal” problem, TDMA-EC performs well with collision avoidance and achieves better energy-efficient performance compared to contention-based protocols. Meanwhile, TDMA-EC schedules receiving and transmitting periods according to node’s position in the spanning tree of network, which also guarantees end-to-end latency with less jitter. Simulation results show that TDMA-EC achieves both energy conservation and lower latency compared to SMAC and DMAC.