IEEE 802.15.4 MAC for clustered WSNs with a directional framework

Authors:
Md. Asdaque Hussain;Md. Nasre Alam;Kyung Sup Kwak
Affiliations:
UWB Communications Research Center, Graduate School of IT and Telecommunication, Inha University, Incheon 402-751, South Korea;UWB Communications Research Center, Graduate School of IT and Telecommunication, Inha University, Incheon 402-751, South Korea;UWB Communications Research Center, Graduate School of IT and Telecommunication, Inha University, Incheon 402-751, South Korea
Venue:
International Journal of Sensor Networks
Year:
2014

Citing 6
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Abstract

This paper exploits the directionality in the wireless sensor network WSN by using single-beam and multibeam directional antennas. We mount a multibeam smart antenna MBSA with a main sink cluster head CH, whereas other child sink CHs and end devices use single-beam sector antennas. The unique reception and transmission property of these antennas requires a sufficient modification to suit omni mode MAC protocols. We choose IEEE 802.15.4 as the platform for the proposed MAC design and analyse the effects of these antennas on the current superframe structure. We simulate the modified MAC protocol by using the OPNET modeller under varying traffic loads and an increasing number of nodes. We find an increase in network performance in terms of delays and energy consumption and a simultaneous decrease in the level of urgency.