基于机会公平退避的无线传感网MAC协议  

A Wireless Sensor Network MAC Protocol based on Opportunistic Fairness Back-off Scheme

作　　者：张俊豪[1] 唐俊华[1] 李生红[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《通信技术》2011年第12期54-56,60,共4页Communications Technology

基　　金：国家自然科学基金(批准号:61071152;61071081);国家973基础研究计划(批准号:2010CB731403;2010CB731406)资助

摘　　要：在无线传感网SMAC协议的基础上,提出了一种基于机会公平竞争退避机制的媒体接入控制协议(OF-MAC)。该机制综合考虑节点当前的吞吐率和节点当前信道状态,引入了新的退避时间的计算方法,能够兼顾无线传感网节点间的公平性和网络吞吐率。实验表明,该方法在节点公平性和网络吞吐率方面都取得了较好的表现,且能够根据需要自由调整两者的性能。该方法只需要在SMAC协议的基础上做简单的改动,易于实现。A Medium Access Control （MAC） protocol, based on a new hack-off scheme, a modificati for wireless sensor network is proposed. Both throughput and channel state are taken into account and a for computing back-off time is introduced into this new scheme. The simulation result shows that the for computing back-off time could achieve good performance in both node fairness and network throughput. proposed here only needs a minor modification of SMAC protocol and is easy in implementation

关 键 词：公平性 机会 退避机制 媒体接入控制协议 无线传感网 

分 类 号：TN925[电子电信—通信与信息系统]