摘要
提出了一种基于切换与保持节点选择的协同ARQ协议,该协议在确保无线传输可靠性的同时能获得较高的能量效率。建立了一种马尔科夫链模型,在此基础上分析了系统的吞吐量性能;基于无线传感器网络中一种广泛使用的能耗模型,以系统能效为指标分析比较了所提协议与传统ARQ协议的性能,并讨论了中继位置对系统能效的影响。基于Monte Carlo仿真,讨论了所提协议和传统ARQ协议的吞吐量和能效性能。数值和实际仿真结果证实了所给吞吐量模型的有效性;同时仿真比较表明所提协议能获得相比传统ARQ更优的吞吐量和能效性能。
A cooperative automatic repeat request（ARQ） protocol based on switch and stay node selection（SSNS-CARQ） was proposed,which could obtain high energy efficiency and reliable transmission at the same time.A Markov model for analyzing the system throughput was built,and system throughput performance of the proposed protocol and the traditional ARQ protocol were analyzed based on such model.Based on a widely used energy consumption model in WSN,the energy consumption performance of SSNS-CARQ protocol and the traditional ARQ protocol were discussed and compared in terms of energy efficiency,and the effects that positions of relay nodes imposed on energy efficiency were also disscussed.Numerical and simulation results validated the Markov model effective for analyzing the system throughput.It is shown that SSNS-CARQ protocol could perform better in terms of throughput and energy efficiency when compared with the traditional ARQ protocol through simulations.
出处
《通信学报》
EI
CSCD
北大核心
2010年第11期17-24,共8页
Journal on Communications
基金
国家自然科学基金资助项目(60972051)
东南大学移动通信国家重点实验室开放研究基金资助项目(2010D09)
国家科技计划重大专项基金资助项目(2010ZX03006-002-04)~~
关键词
切换与保持
节点选择
ARQ协议
吞吐量
能量效率
switch and stay
node selection
automatic repeat request protocol
throughput
energy efficiency
