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TLTS:大规模无线传感器网络下基于簇的两级TDMA调度协议
引用本文:龚海刚,刘明,王晓敏.TLTS:大规模无线传感器网络下基于簇的两级TDMA调度协议[J].计算机研究与发展,2007,44(1):71-77.
作者姓名:龚海刚  刘明  王晓敏
作者单位:1. 电子科技大学计算机科学与工程学院,成都,610054
2. 南京大学计算机软件与新技术国家重点实验室,南京,210093
基金项目:四川省新型网络创新基金
摘    要:媒质接入控制子层是节点能量消耗的主要所在,因此无线传感器网络设计的基于TDMA的MAC协议具有固有的节能特性,但是其可扩展性较差.基于簇的TDMA协议则可有效提高系统的可扩展性,但同时带来了簇间传输干扰问题.针对此问题提出了一种基于簇的两级TDMA调度协议--TLTS协议.通过两级TDMA调度,避免了簇间传输干扰,提高了能量有效利用率.实验结果显示,当节点密度较高时,TLTS协议更适合用于大规模部署的无线传感器网络中.

关 键 词:无线传感器网络  媒质接入控制  时分复用  能量有效率  簇覆盖  大规模  无线传感器  网络设计  两级  TDMA  调度协议  Wireless  Sensor  Network  Scale  Large  Protocol  Scheduling  规模部署  节点密度  显示  结果  实验  有效利用率  能量消耗  传输干扰  干扰问题
修稿时间:12 15 2005 12:00AM

A Cluster-Based Two Level TDMA Scheduling Protocol for Large Scale Wireless Sensor Network
Gong Haigang,Liu Ming,Wang Xiaomin.A Cluster-Based Two Level TDMA Scheduling Protocol for Large Scale Wireless Sensor Network[J].Journal of Computer Research and Development,2007,44(1):71-77.
Authors:Gong Haigang  Liu Ming  Wang Xiaomin
Affiliation:1 College of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054; 2 State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210093
Abstract:One of the key problems for wireless sensor network (WSN) is the design of medium access control (MAC) protocol, as MAC is the major consumer of sensor energy. TDMA-based MAC protocol is inherently collision free but it has poor scalability. cluster-based TDMA protocol proves to be more scalable than traditional TDMA protocol while it introduces inter-cluster interference problem. A two level TDMA scheduling (TLTS) protocol is presented to solve the problem, in which the first scheduling ensures that neighboring clusters collecting their member's data during different frame in order to avoid inter-cluster interference and the second scheduling schedules members of cluster sending their data to their respective cluster head during different slots to avoid intra-cluster interference. Simulation results show that TLTS performs better than HEED when node density turns higher. TLTS is more practical than HEED which uses CDMA code to avoid inter-cluster interference for deploying large scale WSN.
Keywords:WSN  media access control  TDMA  energy efficiency  cluster coverage
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