Finite-Horizon Online Transmission Scheduling on an Energy Harvesting Communication Link with a Discrete Set of Rates

Date

2014-06-01

Author

BACINOĞLU, BARAN TAN
Uysal, Elif

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As energy harvesting communication systems emerge, there is a need for transmission schemes that dynamically adapt to the energy harvesting process. In this paper, after exhibiting a finite-horizon online throughput-maximizing scheduling problem formulation and the structure of its optimal solution within a dynamic programming formulation, a low complexity online scheduling policy is proposed. The policy exploits the existence of thresholds for choosing rate and power levels as a function of stored energy, harvest state and time until the end of the horizon. The policy, which is based on computing an expected threshold, performs close to optimal on a wide range of example energy harvest patterns. Moreover, it achieves higher throughput values for a given delay, than throughput-optimal online policies developed based on infinite-horizon formulations in recent literature. The solution is extended to include ergodic time-varying (fading) channels, and a corresponding low complexity policy is proposed and evaluated for this case as well.

Subject Keywords

Dynamic programming, Energy-efficient scheduling, Energy harvesting, Finite-horizon, Online policy, Packet scheduling, Threshold policy, Throughput, Waterfilling

URI

https://hdl.handle.net/11511/34841

Journal

JOURNAL OF COMMUNICATIONS AND NETWORKS

DOI

https://doi.org/10.1109/jcn.2014.000049

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

B. T. BACINOĞLU and E. Uysal, “Finite-Horizon Online Transmission Scheduling on an Energy Harvesting Communication Link with a Discrete Set of Rates,” JOURNAL OF COMMUNICATIONS AND NETWORKS, pp. 293–300, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34841.