Optimal utility-energy tradeoff in delay constrained random access networks

Authors:
Amirmahdi Khodaian;Babak H. Khalaj;Hamed Shah-Mansouri
Affiliations:
Advanced Communication Research Institute, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran;Advanced Communication Research Institute, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran;Advanced Communication Research Institute, Electrical Engineering Department, Sharif University of Technology, Tehran, Iran
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

Rate, energy and delay are three main parameters of interest in ad-hoc networks. In this paper, we discuss the problem of maximizing network utility and minimizing energy consumption while satisfying a given transmission delay constraint for each packet. We formulate this problem in the standard convex optimization form and subsequently discuss the tradeoff between utility, energy and delay in such framework. Also, in order to adapt for the distributed nature of the network, a distributed algorithm where nodes decide on choosing transmission rates and probabilities based on their local information is introduced.