无线传感器网络自适应多中继协作差错控制策略  

Adaptive Cooperative Error Control Mechanism with Multiple Relays for Wireless Sensor Networks

作　　者：靳勇[1] 白光伟[2] 常晋义[1] 

机构地区：[1]常熟理工学院计算机科学与工程学院,江苏常熟215500 [2]南京工业大学计算机科学与技术系,南京210009

出　　处：《小型微型计算机系统》2013年第4期753-759,共7页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61073197)资助;江苏省自然科学基金项目(BK2010548)资助

摘　　要：提出一种基于能效和通信距离的适用于无线传感器网络的多中继自适应协作差错控制策略,在提供高可靠性数据传输同时保持高吞吐率和高能效.根据传统ARQ、Chase合并的混合ARQ的能效规律和数据包在链路层分割为若干个数据帧的规律建立了一种马尔科夫链模型,并给出了饱和吞吐率、数据包丢弃概率、时延和能效分析方法,在此基础上提出了自适应多中继协作差错控制策略.针对线性移动无线传感器网络模型,对传统ARQ、Chase合并的混合ARQ和自适应多中继协作差错控制的通信性能以及移动性的影响进行了分析.结果表明所提策略在饱和吞吐率、可靠性和能效方面,表现出了比传统ARQ和Chase合并的混合ARQ更优越的性能.This paper propose an adaptive cooperative error control with multiple relays based on energy efficiency of wireless sensor networks and communication distance, which could obtain high energy efficiency, saturation throughput rate and reliable transmission at the same time. According to the energy efficiency characteristics of traditional ARQ, Chase combining hybrid ARQ and the discipline of network layer packets divided into some link layer frames, a Markov chain model for analyzing the saturation throughput rate, packet dropping probability, average delay and energy efficiency was built. An adaptive cooperative error control was established based on the Markov model, additionally the above performance of the proposed protocol and the traditional ARQ and Chase combining hybrid ARQ would also be analyzed based on such model. With a linear and mobile WSNs model, the communication performance of the Chase combining hybrid ARQ, traditional ARQ and the proposed mechanism were discussed and compared. The mathematical analysis show that the proposed mechanism could perform better in terms of saturation throughput rate, reliability and energy efficiency when compared with the traditional ARQ and Chase combining hybrid ARQ.

关 键 词：无线传感器网络 协作通信 混合自动请求重传 马尔科夫链 能量效率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]