Hybrid MAC Protocol Based on Wireless Sensor Network
Ding Dinga · Jisuanji gongcheng · 2012
This paper proposes a hybrid Medium Access Control(MAC) protocol based on Wireless Sensor Network(WSN) by combining with the work pattern of Time Division Multiple Access(TDMA) and Carrier Sense Multiple Access(CSMA).It Introduces Fast Collision Resolution(FCR) into MAC protocol.Sensor-MAC(SMAC) protocol is improved in the mode of CSMA.Under such condition,the contention window changes according to the changes of network traffic.The hybrid MAC protocol can switch the working way self-adaptively and smoothly between the mode of CSMA and TDMA.Simulation results on OMNet++ show that the improved protocol can enhance the utilization efficiency of channel and prolong lifecycle of network.