An analytical model for SMAC protocol in multi-hop wireless sensor networks  

作　　者：LUO Jun JIANG LingGe HE Chen 

机构地区：[1]Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China

出　　处：《Science China(Information Sciences)》2010年第11期2323-2331,共9页中国科学（信息科学）（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 60772100, 60872017,60832009)

摘　　要：Considering the active/sleep dynamics and the contention backoscheme of SMAC protocol in multi-hop wireless sensor networks （WSNs）, we model each node as a finite single server queue with server shutdown, and model each node＇s states as a two-dimensional continuous-time Markov chain. Based on the model, we derive the network performance in terms of average packet loss ratio, network throughput, average packet delay and average power consumption. Experiment comparisons show that the analytical results match well with the simulation results, which validates the accuracy of the analytical model. Furthermore, using the analytical model can enable us to investigate the performance tradeobetween energy efficiency and QoS requirement, and give us theoretical insight into the optimal parameters such as duty cycle, mean active period and buffer size in multi-hop wireless sensor networks.Considering the active/sleep dynamics and the contention backoscheme of SMAC protocol in multi-hop wireless sensor networks （WSNs）, we model each node as a finite single server queue with server shutdown, and model each node＇s states as a two-dimensional continuous-time Markov chain. Based on the model, we derive the network performance in terms of average packet loss ratio, network throughput, average packet delay and average power consumption. Experiment comparisons show that the analytical results match well with the simulation results, which validates the accuracy of the analytical model. Furthermore, using the analytical model can enable us to investigate the performance tradeobetween energy efficiency and QoS requirement, and give us theoretical insight into the optimal parameters such as duty cycle, mean active period and buffer size in multi-hop wireless sensor networks.

关 键 词：multi-hop wireless sensor networks Markov chain energy efficiency QOS 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN915.04[自动化与计算机技术—控制科学与工程]