Tradeoff Between Throughput and Energy Consumption in Multirate Wireless Sensor Networks

被引:14
作者
Xie, Dongliang [1 ]
Wei, Wenping [1 ]
Wang, Yu [1 ]
Zhu, Hongsong [2 ]
机构
[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China
[2] Chinese Acad Sci, Inst Informat Engn, Beijing 100093, Peoples R China
基金
中国国家自然科学基金;
关键词
Fairness; multirate; wireless sensor network; FAIRNESS; LIFETIME;
D O I
10.1109/JSEN.2013.2277851
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In wireless networks, multirate capability will facilitate using channel resource and reducing the bit error rate effectively. Current contention-based MAC protocols, however, behave inefficiently in multirate situations, leading to the performance anomaly problem. This paper researches the throughput deterioration in multirate wireless sensor networks. Initially, this paper refers to the notion of fairness to solve the performance deterioration problem and demonstrates that the utility maximization of throughput will be achieved when each contending node receives an equal proportion of channel occupancy time. Besides, considering the intrinsic tradeoff between throughput optimization and energy consumption optimization, the paper converts the tradeoff to the regulation of single node's channel access probability, which is determined by node's data rate and energy level. Finally, based on the contention-based MAC algorithm, the paper proposes an improved MAC protocol. Simulation validates that different application demands between throughput and lifetime can be adjusted flexibly and efficiently by regulating the tradeoff factor in the algorithm.
引用
收藏
页码:3667 / 3676
页数:10
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