title: T-L Plane Abstraction-Based Energy-Efficient Real-Time Scheduling for Multi-Core Wireless Sensors.
abstract: 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.
authors.affiliation: Department of Computer Science and Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea. remnant1120@gmail.com.
authors.forename: Youngmin
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Department of Computer Science and Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea. goory00@gmail.com.
authors.forename: Ki-Seong
authors.initials: KS
authors.lastname: Lee
authors.affiliation: School of Electrical and Electronics Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea. phamngocson1408@gmail.com.
authors.forename: Ngoc-Son
authors.initials: NS
authors.lastname: Pham
authors.affiliation: Department of Computer Science and Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea. ssunno@cau.ac.kr.
authors.forename: Sun-Ro
authors.initials: SR
authors.lastname: Lee
authors.affiliation: Department of Computer Science and Engineering, Chung-Ang University, Heuksuk-ro 84, Dongjak-gu, Seoul 156-756, Korea. cglee@cau.ac.kr.
authors.forename: Chan-Gun
authors.initials: CG
authors.lastname: Lee
keywords: DPM; T-L plane; energy efficiency; real-time scheduling; wireless sensor node