摘要
介质访问控制(MAC)协议的设计是无线传感器网络(WSNs)的关键技术之一,传感器介质访问控制(SMAC)协议是较早提出的以节能为目的的MAC协议。介绍了SMAC工作原理,在SMAC的基础上采用了快速冲突解决算法,使节点能够根据信道的忙闲,快速调整竞争窗口的大小,提高信道利用率。仿真结果表明:在网络负载较大的情况下,新方案在吞吐量和延时性方面相对于SMAC有显著的提高。
The design of media access control （MAC） protocol is one of the key technologies for wireless sensor networks design. SMAC protocol is proposed earlier for the purpose of energy saving of MAC protocol. The working principle of SMAC is briefly described. On the basis of the SMAC, fast collision resolution algorithm is adopted to let the node to fast adjust contention window size according to the channel＇ s busy, and improve the channel utilization. The Simulation results show that in the case of large network load, the new scheme significantly improved throughput and latency compared with the original protocol SMAC.
出处
《传感器与微系统》
CSCD
北大核心
2010年第7期47-49,52,共4页
Transducer and Microsystem Technologies
关键词
无线传感器网络
快速冲突解决算法
退避机制
wireless sensor networks（WSNs）
fast collision resolution algorithm
back off mechanism
