On optimal transmission policies for energy harvesting devices: The case of two users

Davide Del Testa, Nicolò Michelusi, Michele Zorzi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

We consider a pair of energy harvesting devices, whose state at any given time is determined by the energy level and an importance value, associated to the transmission of a data packet to the receiver at that particular time. Under the assumption of a central controller with information on the energy level and packet importance of both nodes, we consider the problem of optimizing the transmission strategy of the two nodes over a shared wireless channel, with the goal of maximizing the long-term average importance of the transmitted data. Under the assumption of i.i.d. Bernoulli energy arrivals and a collision channel model, we show the optimality of threshold policies with respect to the data importance level, i.e., the sensor nodes should report only data with an importance value above a given threshold. We provide numerical results to evaluate the impact on the performance of factors such as the battery capacity size and the energy harvesting rate, as well as the interaction between the two nodes.

Original languageEnglish (US)
Title of host publication10th International Symposium on Wireless Communication Systems 2013, ISWCS 2013
PublisherIEEE Computer Society
Pages370-374
Number of pages5
ISBN (Print)9783800735297
StatePublished - 2013
Externally publishedYes
Event10th IEEE International Symposium on Wireless Communication Systems 2013, ISWCS 2013 - Ilmenau, Germany
Duration: Aug 27 2013Aug 30 2013

Publication series

NameProceedings of the International Symposium on Wireless Communication Systems
ISSN (Print)2154-0217
ISSN (Electronic)2154-0225

Conference

Conference10th IEEE International Symposium on Wireless Communication Systems 2013, ISWCS 2013
Country/TerritoryGermany
CityIlmenau
Period8/27/138/30/13

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

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