Research and Improvement about SMAC Protocol for Wireless Sensor Networks

Abstract

On the basis of the research and competitive MAC protocol, according to the defects of SMAC protocol, in order to adapt to the dynamic changes of the state of the channel, and to improve the fairness of the node to access the channel, this paper proposed an improved SMAC protocol, and used the NS2 platform to simulate. The simulation parameters set as follows: starting point of energy was 1000J, receive power consumption was 368.2 mw, idle listening on the power consumption was 344.2 mw, sleep was 50 uw, simulation of bandwidth was 20kbps, routing protocol was DSR, Duty ratio was 20%. Finally, from the network throughput, the network energy consumption, energy efficiency, transmission delay, etc. were simulated. The simulation results show that the throughput and energy consumption and energy utilization, the improved SMAC agreement improved compared with the SMAC agreement, in terms of transmission delay the improved protocol can be used for a wide portfolio of scene.