Abstract
Synchronous medium access control (MAC) protocols are highly essential for wireless sensor networks (WSN) to support transmissions with energy saving, quality services, and throughput in industrial, commercial and healthcare applications. In this paper, a synchronous channel access mechanism is designed, where sensors can reserve the contention free data transmission slots in different available channels. To reduce the delay of data transmission among the nodes in the mesh topology, a linear programming problem (LPP) model is designed to select suitable relay nodes. Moreover, the performance of the proposed MAC is analyzed and our models are validated with simulation and analytical results. The results show that our proposed MAC protocol outperforms the IEEE 802.15.4e MAC mechanism in terms of throughput, reliability, delay, energy, packet drop rate and transmission success rate.
Highlights
A wireless sensor network (WSN) consists of a large number of autonomous sensor nodes, which are mostly used for environmental monitoring, military surveillance, smart buildings, health care and industrial applications
To the best of our knowledge, though few works analyze the performance of the wireless mesh sensor network, none of the work evaluates the reliability and latency of the deterministic and synchronous multichannel extension (DSME) medium access control (MAC) of IEEE 802.15.4e used for the WSN in a multi-channel synchronous environment
It is to be noted that the carrier sense multiple access with collision avoidance (CSMA/CA) mechanism in WSN normally uses the MAC mechanism of IEEE 802.15.4, where one backoff unit/slot in the IEEE 802.15.4 standard is of 20 symbols
Summary
Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital, Linkou 33305, Taiwan.
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