无线传感器网络SMAC协议的研究与改进  

Research and Improvement about SMAC Protocol for Wireless Sensor Networks

作　　者：刘敏[1] 

机构地区：[1]贵阳学院数学与信息科学学院,贵阳550005

出　　处：《计算机测量与控制》2013年第5期1400-1403,共4页Computer Measurement &Control

摘　　要：在研究竞争类MAC协议SMAC的基础上,针对SMAC协议的缺陷,为适应信道状态的动态变化和提高节点访问信道的公平性,提出了一种改进型的SMAC协议,并应用NS2平台进行仿真;仿真参数设定为节点起点能量是1000J,发送功耗为386mW,接收功耗为368.2mW,空闲侦听功耗为344.2mW,睡眠功耗为50μW,仿真带宽为20kbps,路由协议为DSR,占空比为20%;最后分别从网络吞吐量、网络能量消耗、能量效率、传输延迟等方面进行了仿真;结果表明:在吞吐量,能量消耗和能量利用率方面,改进后的SMAC协议与SMAC协议相比有所提高,在传输时延方面改进后的协议适用于业务量较大的场景。On the basis of the research and competitive MAC protocol, according to the detects of SMAG 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 im- proved SMAC protocol, and used the NS2 platform to simulate. The simulation parameters set as follows： starting point of energy was 1000], 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.

关 键 词：改进型SMAC NS2平台仿真 性能提高 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]