Energy-efficient routing for connection-oriented traffic in wireless ad-hoc networks

Authors:
Anastassios Michail;Anthony Ephremides
Affiliations:
Aperto Networks, 1637 S. Main St., Milpitas, CA;Department of Electrical and Computer Engineering and Institute for Systems Research, University of Maryland, College Park, MD
Venue:
Mobile Networks and Applications
Year:
2003

Citing 4
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Abstract

We address the problem of routing connection-oriented traffic in wireless ad-hoc networks with energy efficiency. We outline the trade-offs that arise by the flexibility of wireless nodes to transmit at different power levels and define a framework for formulating the problem of session routing from the perspective of energy expenditure. A set of heuristics are developed for determining end-to-end unicast paths with sufficient bandwidth and transceiver resources, in which nodes use local information in order to select their transmission power and bandwidth allocation. We propose a set of metrics that associate each link transmission with a cost and consider both the cases of plentiful and limited bandwidth resources, the latter jointly with a set of channel allocation algorithms. Performance is measured through call blocking probability and average energy consumption and our detailed simulation model is used to evaluate the algorithms for a variety of networks.