Mobility adaptive CSMA/CA MAC for wireless sensor networks

Authors:
Bilal Muhammad Khan;Falah H. Ali
Affiliations:
Communication Research Group, School of Engineering and Design, University of Sussex, UK;Communication Research Group, School of Engineering and Design, University of Sussex, UK
Venue:
ICCSA'11 Proceedings of the 2011 international conference on Computational science and its applications - Volume Part I
Year:
2011

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Abstract

In this paper we propose high throughput low collision, mobility adaptive and energy efficient medium access protocol (MAC) called Mobility Adaptive (MA-CSMA/CA) for wireless sensor networks. MA-CSMA/CA ensures that transmissions incur less collision, and allows nodes to undergo sleep mode whenever they are not transmitting or receiving. It uses contention based as well as contention free period efficiently together to minimise the number of collisions cause by the mobile node entering and leaving the clusters. It also allows nodes to determine when they can switch to sleep mode during operation. MA-CSMA/CA for mobile nodes provides fast association between the mobile node and the cluster coordinator. The performance of MACSMA/CA is evaluated through extensive simulation, analysis and compared with the existing IEEE 802.15.4 industrial standard. The results show that MACSMA/CA outperforms significantly the existing CSMA/CA protocol including throughput, latency and energy consumption.