Performance Comparison of Network Topologies in ZigBee Based WPAN

ZigBee is two-way wireless communication standard with low cost and low power consumption, developed by the Zigbee Alliance. Zigbee network based on IEEE 802.15.4 standard offers unique advantages for wireless applications. One of the application areas of Zigbee is focuses short- range wireless data transfer at low data rates. ZigBee networks are successfully employed in areas such as consumer electronics, home and building automation, industrial controls, PC peripherals, medical sensor applications, and entertainment electronics. The comparative performance analysis of star and mesh topologies have been studied and analyzed for ZigBee based networks. The Network Simulator (NS-2) is one of powerful tool used to simulate wireless networks. The performance of ZigBee based wireless PAN is evaluated by considering Packet Delivery ratio (PDR), Delay, Jitter and Throughput for Star and mesh topologies. Various scenarios are generated by varying number of node on, range, mobility, simulation time and routing protocol for star and mesh topology in Zigbee Network. The performance parameters and graphical results are extracted from the trace files. Simulation results shows that mesh wireless PAN network performs better as compared to star networks, further packet delivery ratio decreases as the deployment area increases. Index Terms— Delivery ratio, Delay, Jitter, Throughput, IEEE 802.15.4, Star topologies, Mesh topologies, NS-2, WPAN, WSN, Zig-bee Wireless networks. ——————————  ——————————