Multichannel MAC for Wireless Sensor Network applications
S. Radha, Gnanadhas Josemin Bala · 2018
Wireless Sensor Network is one of the major areas in wireless communications which extend its application in military, security, internet and scientific purposes. For a network which has dynamically varying channel gain and random topology, selection of operating parameters which improves network performance is always a challenging task. Single channel MAC is generally used in statistical analysis, but providing multi channel MAC will improve the performance of the channel. Multichannel is available in 802.11b/g which operates at 3 different non overlapping channels. In this paper we implemented 802.11g multichannel MAC using NS-2.34 and compared the performance of the network with single channel MAC in terms of throughput, packet delivery ratio and throughput. The multichannel uses back off algorithm and switches between the 3 non overlapping channels whenever the contention window of distributed coordination function reaches the maximum threshold value and thus gives better performance.