T-L Plane Abstraction-Based Energy-Efficient Real-Time Scheduling for Multi-Core Wireless Sensors

Sensors

Sun-Ro Lee¹  Chan-Gun Lee¹  Youngmin Kim¹  Ki-Seong Lee¹  Ngoc-Son Pham² 

[1] Department of Computer Science and Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea;School of Electrical and Electronics Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea;

关键词: energy efficiency;    wireless sensor node;    T-L plane;    real-time scheduling;    DPM;   

DOI  :  10.3390/s16071054

来源: DOAJ

【 摘 要 】

Energy efficiency is considered as a critical requirement for wireless sensor networks. As more wireless sensor nodes are equipped with multi-cores, there are emerging needs for energy-efficient real-time scheduling algorithms. The T-L plane-based scheme is known to be an optimal global scheduling technique for periodic real-time tasks on multi-cores. Unfortunately, there has been a scarcity of studies on extending T-L plane-based scheduling algorithms to exploit energy-saving techniques. In this paper, we propose a new T-L plane-based algorithm enabling energy-efficient real-time scheduling on multi-core sensor nodes with dynamic power management (DPM). Our approach addresses the overhead of processor mode transitions and reduces fragmentations of the idle time, which are inherent in T-L plane-based algorithms. Our experimental results show the effectiveness of the proposed algorithm compared to other energy-aware scheduling methods on T-L plane abstraction.

【 授权许可】

Unknown