计算机工程2017，Vol.43Issue(11)：32-39,8.DOI:10.3969/j.issn.1000-3428.2017.11.006
一种针对树形拓扑网络的混合MAC协议
A Hybrid MAC Protocol for Tree Topology Network
摘要
Abstract
Aiming at the problem of low utilization ratio of the channel in the Time Division Multiple Access(TDMA) mechanism in the tree topology underwater acoustic sensor network,this paper proposes a hybrid MAC protocol based on improved lightweight traffic adaptive random medium access mechanism and TDMA mechanism:TAST-MAC.It adopts S-ALOHA competition mechanism effectively to improve the channel utilization when the network traffic is low.This protocol uses an optimization algorithm to calculate the maximum transmission probability table values which are assigned to the cluster sub nodes,and uses a flexible traffic adaptive slot allocation mechanism to adapt different network traffic situation.Experimental results show that TAST-MAC not only improves the communication efficiency in the tree topology networks,but also reduces the waiting time of the sub nodes.关键词
树形拓扑/水声传感网络/轻量级随机访问/时分多址/最优化算法Key words
tree topology/underwater acoustic sensor network/lightweight random access/Time Division Multiple Access(TDMA)/optimization algorithm分类
信息技术与安全科学引用本文复制引用
刘广钟,徐艺原..一种针对树形拓扑网络的混合MAC协议[J].计算机工程,2017,43(11):32-39,8.基金项目
国家自然科学基金(60972047) （60972047）
上海市教育委员会科研创新项目(S2012388). （S2012388）
