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Energy-efficient collision resolution in wireless ad-hoc networks

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2 Author(s)
Sagduyu, Y.E. ; Electr. & Comput. Eng. Dept., Maryland Univ., College Park, MD, USA ; Ephremides, Anthony

In this paper, we address the collision resolution (CR) problem from an energy-efficiency point of view and develop a residual-energy-based collision resolution algorithm (CRA) for energy-limited terminals. In this algorithm, which is based on tree-splitting, packets involved in a collision are partitioned into subsets according to the amount of residual battery energy left at the corresponding terminals, and retransmissions are scheduled according to a tree structure. We extend the proposed energy-based CR approach to cases without hard energy constraints but, rather, with energy-efficiency objectives. The algorithm then utilizes the distance from the receiver as the criterion. We evaluate the proposed algorithm via simulation for communication systems ranging from simple single-cell classical collision channel models to general multihop wireless ad-hoc networks.

Published in:

INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications. IEEE Societies  (Volume:1 )

Date of Conference:

30 March-3 April 2003