The Research And Simulation Of Csma/Ca Mechanism Of Zigbee Protocol

In order to improve the performance of star-topology ZigBee network with fewer nodes, modified the CSMA/CA channel access mechanism of ZigBee protocol, and proposed an improved channel access mechanism - Circular Queue access mechanism. Described and realized Circular Queue mechanism; showed the beacon frame format of Circular-Queued. Finally, gave the simulation results, compared and analyzed the network performance of CSMA / CA mechanism before and after the modification from network response time, throughput, packet loss rate. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology