摘要
针对退避策略在无线传感器网络介质访问控制(MAC)协议中的作用与要求,分析了典型的无线传感器网络MAC((S-MAC)协议的退避机制,提出网络冲突概率自适应退避算法。并用NS2对其进行了性能仿真测试,仿真结果表明,在网络节点分布较为密集、突发数据流量变化较大的网络环境中,改进后的方案在能量效率和吞吐量方面都有较大的改善。
In connection with the effects and requirements of backoff strategy in the Medium Access Control（MAC） protocols,the backoff strategy for a typical MAC protocol for wireless sensor networks,S-MAC protocol,is analyzed,the network collision probability adaptive backoff strategy presented and performance simulation tests conducted by using NS2.The results indicate that in the network environment where the network nodes are densely distributed and the burst data flow varies greatly,the energy efficiency and throughput of the new scheme are both much improved.
出处
《光通信研究》
北大核心
2010年第5期55-59,共5页
Study on Optical Communications
关键词
冲突概率
自适应
退避算法
仿真
collision probability
adaptive
backoff strategy
simulation
