ZigBee: Simulation and Investigation of Star and Mesh Topology by Varying Channel Sensing Duration

ZigBee was developed by IEEE 802. 15. 4 Task Group and ZigBee Alliance. ZigBee (IEEE 802. 15. 4?2006 standard) is a category in the IEEE 802 family and ZigBee alliance is responsible for ZigBee standard which uses the transported services of the 802. 15. 4 network specification therefore ZigBee is a specification for a suite of high level communication protocols using small, low-power digital radios based on an IEEE 802 standard for personal area networks. ZigBee devices are often used in mesh network form to transmit data over longer distances, passing data through intermediate devices to reach more distant ones. This allows ZigBee networks to be formed ad-hoc, with no centralized control or high-power transmitter/receiver able to reach all of the devices. In this research paper, the effect of channel sensing duration on star and mesh topologies is analyze by varying Channel Sensing duration by using OPNET Modeler. The performance is compared in terms of Data Traffic send, Data Traffic Received and Mac Delay.