Asymptotically Optimal Scheduling for Energy Harvesting Wireless Sensor Networks

Date

2017-10-13

Author

Gül, Ömer Melih

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This paper considers a single-hop wireless sensor network where a fusion center (FC) collects data from M energy harvesting (EH) wireless sensor nodes. The harvested energy is stored losslessly in an infinite-capacity battery at each node. In each time slot, K nodes can be scheduled by the FC to send data over K orthogonal channels. The FC has no direct knowledge on the battery states of nodes, or the statistics of EH processes; it only has information of the outcomes of previous transmission attempts. The objective is to find a simple policy whereby maximum total throughput is achieved in this data back-logged system. A node can transmit data whenever being scheduled, provided it has sufficient energy for transmission. A simple policy, Uniforming Random Ordered Policy (UROP), is proposed for the problem. UROP is proved to be asymptotically optimal over infinite time horizon for general EH processes. Numerical results indicate that even with finite-capacity batteries, UROP achieves near-optimal throughput. We believe that UROP is applicable to a wider area than EH wireless sensor networks.

Subject Keywords

Energy harvesting, Mobile computing, Resource allocation, Scheduling policy, Wireless sensor networks

URI

https://hdl.handle.net/11511/55871

Conference Name

28th Annual IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

Ö. M. Gül, “Asymptotically Optimal Scheduling for Energy Harvesting Wireless Sensor Networks,” presented at the 28th Annual IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Montreal, CANADA, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55871.