International Journal of Modern Engineering Research (IJMER)
A network which connects a bunch of distributed low-power sensor nodes together, with each node dedicated to a predefined operation can be visualized as a Wireless Sensor Network (WSN). The network must have the capability of gathering and transferring the data generated by end nodes efficiently. The major parts of ZigBee based LR-WPAN (Low Range-Wireless Personal Area Network) are-coordinator, routers and end devices. In this paper, the authors concentrated on ZigBee based LR-WPAN and analyzed the effect of static and dynamic state of ZigBee PAN coordinator on the performance of the network. Here the analysis is made on 3 topologies namely-star, mesh and tree with the help of OPNET (OPtimized Network Engineering Tool) modeler simulations.