面向无线体域网的低功耗多频道MAC协议  

Multi-channel Energy Efficiency MAC for Wireless Personal Area Network

作　　者：居征宇 喻剑[1] 

机构地区：[1]同济大学嵌入式系统与服务计算教育部重点实验室,上海200092

出　　处：《小型微型计算机系统》2016年第1期78-82,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金面上项目(61472004)资助

摘　　要：针对无线体域网需要在2.4 GHz频段具有复杂干扰环境下可靠工作,且需要尽可能降低功耗的问题.提出一种低功耗多频道介质访问控制(MAC)协议:MCE-MAC.在本协议中,节点使用星型拓扑连接;其工作频道随时间变化快速切换.并提出了自适应超帧频率控制机制,控制节点占空比降低网络能耗;另外,在工作中对无线频道进行感知,动态调整其使用的频道,提高传输可靠性.在基于TI的CC2530平台上实现了MCE-MAC,实验证明,在单频道的MAC协议极大的受到干扰影响的情况下,本文提出的MCE-MAC的数据传输成功率和传输时延不受干扰影响;相较于EM-MAC协议,其传输时延显著优于EMM AC且功耗仅为其15%左右.Wireless Personal Area Network （WPAN） is vulnerable to all kinds of wireless interference in 2.4 GHz,and has a high re-quirement for energy-efficiency. It is important to enhance its robustness without increasing its energy consumption. This paper presentsthe design and evaluation of Multi-Channel Energy-efficient MAC abbreviation to MCE-MAC. In MCE-MAC, organized in a star to-pology, all Slaves communicate with their Master in a channel that is dynamically assigned by the latter according to channel quality.To enhance WPAN reliability, this work proposes a wireless channel management method. It also proposes an adaptive beacon deliveryfrequency control method to reduce work duty-cycle of nodes so as to decrease their energy consumption. Implemented in a TI CC2530platform,It proves that MCE-MAC＇s performance like packet delivery latency and packet delivery rate does not affected by interfer-ence and with around 15% energy consumption compared to EM-MAC.

关 键 词：无线体域网 介质访问控制 干扰 服务质量 低功耗 IEEE 802.15.4 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]