收稿日期: 2009-03-18
修回日期: 2009-08-18
网络出版日期: 2010-02-25
基金资助
国家自然科学基金资助项目(60772107)
Real-time Intra-Task Voltage Scheduling Algorithm for Wireless Sensor Networks
Received date: 2009-03-18
Revised date: 2009-08-18
Online published: 2010-02-25
Supported by
国家自然科学基金资助项目(60772107)
陈杰 易本顺 方彦军 岳林 . 无线传感器网络实时任务内电压调度算法研究[J]. 华南理工大学学报(自然科学版), 2010 , 38(2) : 106 -110 . DOI: 10.3969/j.issn.1000-565X.2010.02.020
This paper proposes a low power real-time dynamic voltage scaling algorithm with low power consumption for the energy-efficient design in the applications of wireless sensor networks which require collaborative processing executed in parallel on sensor nodes. In this algorithm, a single-task processing model of nodes is established and used to reflect the influences of associated communication events on the processing of tasks, and an optimal intratask voltage scheduling strategy is introduced to obtain the ideal operation frequency (or voltage ) of each basic block in the model. Afterwards, a frequency split method is proposed to effectively eliminate the slack time between the task completion time and the deadline. The implementation method of the proposed algorithm is also presented and the effectiveness of the algorithm in reducing the energy consumption of nodes is finally verified through a simulation.
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