International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Wireless sensor network consists of tiny nodes capable of sensing physical quantity and converting it into electrical form. The IEEE 802.15.4 standard is supported by Wireless Personal Area Network (WPAN) which consists of tiny sensor node, have features like short range, low bit rate and low cost. The support of QoS in sensor networks faces several challenges due to the wireless nature, limited energy, low reliability of nodes, distributed architecture and constantly changing network topology. To obtain the optimum value of QoS parameter, the authors analyzed the effect of various radio propagation models on performance of wireless sensor network with varying traffic models using network simulator tool.