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wu xian chuan gan qi wang luo smac xie yi de yan jiu yu gai jin
Author(s): 
Pages: 1400-1403
Year: Issue:  5
Journal: Computer Measurement & Control

Keyword:  improved SMACNS2 platform simulationperformance improved;
Abstract: 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。
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