A Kind of Wireless MAC Protocol to Improve Survivability of WSN

In Wireless Sensor Network (WSN), the ability to avoid collision directly impacts on node energy consumption and network performance. Based on introduction of CSMA/CA protocol, the paper laid emphasis on shortcoming of binary back off algorithm affect survivability time of WSN. On this basis, a kind of CSMA/CA protocol based on improved binary back off algorithm was proposed. The algorithm reasonably scheduled competition and back off time of nodes and improved fairness of the network to increase network survival cycle. Network simulation results shows that the improved protocol effectively improves network survivable cycle in case of fixed network size. The performance of network delay and throughput also improved to a certain extent.