Publication Type

Conference Proceeding Article

Publication Date

6-2014

Abstract

In wireless sensor networks powered by ambient energy harvesting (WSNs-HEAP), sensor nodes' energy harvesting rates are spatially heterogeneous and temporally variant, which impose difficulties for medium access control (MAC). In this paper, we first derive the necessary conditions under which channel utilization and fairness are optimal in a WSN-HEAP, respectively. Based on the analysis, we propose an earliest deadline first (EDF) polling MAC protocol, which regulates transmission sequence of the sensor nodes based on the spatially heterogeneous energy harvesting rates. It also mitigates temporal variations in energy harvesting rates by a prediction and update mechanism. Simulation results verify the performance tradeoff predicted by our analysis for the proposed HEAP-EDF protocol. In the presence of spatial heterogeneity and temporal variations in energy harvesting rates, our proposed protocol exhibits significant performance advantages compared to the existing MAC protocols for WSNs-HEAP in the literature.

Keywords

Wireless sensor networks, ambient energy harvesting, channel utilization earliest deadline first, fairness, medium access control

Discipline

OS and Networks

Research Areas

Software and Cyber-Physical Systems

Publication

IFIP Networking 2014

First Page

1

Last Page

9

Identifier

10.1109/IFIPNetworking.2014.6857125

Publisher

IEEE

City or Country

Trondheim, Norway

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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