Ge Ma and Dongyu Qiu
Department of Electrical and Computer Engineering
Concordia University, Montreal, QC, Canada
Designing low energy consumption, high efficiency Media Access Control (MAC) protocols are one of
the most important directions in wireless sensor networks (WSN). In this paper, we proposed a new
contention reserve MAC protocol, named CRMAC, under the inspiration of IEEE 802.15.4’s superframe
structure. CRMAC is a MAC protocol suitable for intra-cluster WSN that combines the advantages of
contention and schedule-based MAC protocols. We introduce the mechanism and superframe structure of
CRMAC in detail and verified the performance of this protocol through simulations. Our results show
that CRMAC performs better than IEEE 802.15.4 in energy consumption, system delay and network
throughput. CRMAC is especially suitable for short packet transmission under low load networks, which
is the main situation in WSN.
KEYWORDS
WSN, MAC, CRMAC, Superframe
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