Performance Analysis of a Beacon and Non Beacon Enabled IEEE 802.15.4 Star WSNs with Different Traffic Loads

This paper deals with IEEE 802.15.4 beacon enabled and non beacon enabled multi-hop star wireless sensor networks with varying traffic loads. For high channel utilization & low power consumption, impact of MAC parameters such as beacon order (BO) and superframe order (SO) has been analyzed. IEEE 802.1.5.4 MAC works in two modes, beacon and non beacon mode. This paper provides the performance analysis of IEEE 802.15.4 star topology using DYMO protocol by dynamically adjusting the BO and SO values depending on the traffic loads. Various network performance parameters calculated are throughput, average end to end delay, average jitter, total energy consumption, percentage of time in sleep mode, residual battery consumption. Simulation is performed on a Qualnet Simulator version 6.1. The comparative analysis of result shows that it can be concluded that performance of DYMO is better in non beacon enabled mode. For low values of data rates, network performance parameters are better for all BO and SO.