The Analysis and Improvement of S-MAC Protocol for Wireless Sensor Networks
首发时间:2011-03-18
Abstract:Nowadays Wireless Sensor Networks (WSN) has been widely used because of its adaptability, mobility and scalability. The MAC protocol is one of the most important network protocols which guarantee the WSN communication efficiency. The major concern of this paper is the typical contention-based MAC protocol in WSN-the S-MAC protocol. Considering the backoff algorithm of S-MAC protocol cannot resolve the fairness problem for nodes communication, the BDQR (Backoff Depends on Queue and Retry) backoff algorithm was presented in this paper. The experimental results demonstrated that by using this algorithm, nodes communication fairness was improved, channel collisions were reduced while network lifespan was prolonged.
keywords: Wireless Sensor Networks (WSN) Medium Access Control (MAC) S-MAC Backoff algorithm
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无线传感器网络SMAC协议的分析与算法改进
摘要:无线传感器网络(WSN)使用灵活,移动性强,架设便捷,应用范围非常广泛。媒体访问控制(MAC)协议是保证无线传感器网络高效通信的关键网络协议之一。重点分析了WSN中基于竞争的典型MAC协议--SMAC协议。针对SMAC协议中采用的退避算法不能良好地解决节点通信公平性等问题,提出了BDQR退避算法。实验结果表明,该算法有效地提高了节点通信公平性,降低了信道的碰撞,延长了网络的生命周期。
关键词: 无线传感器网络 媒体访问控制 S-MAC 退避算法
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No.4415879569939129****
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