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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
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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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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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.