%0 Conference Paper
%B Proceedings of the fifteenth annual ACM-SIAM symposium on Discrete algorithms
%D 2004
%T End-to-end packet-scheduling in wireless ad-hoc networks
%A Kumar,V. S. Anil
%A Marathe,Madhav V.
%A Parthasarathy,Srinivasan
%A Srinivasan, Aravind
%X Packet-scheduling is a particular challenge in wireless networks due to interference from nearby transmissions. A distance-2 interference model serves as a useful abstraction here, and we study packet routing and scheduling under this model. The main focus of our work is the development of fully-distributed (decentralized) protocols. We present polylogarithmic/constant factor approximation algorithms for various families of disk graphs (which capture the geometric nature of wireless-signal propagation), as well as near-optimal approximation algorithms for general graphs. The packet-scheduling work by L eighton, Maggs and Rao (Combinatorica, 1994) and a basic distributed coloring procedure, originally due to Luby (J. Computer and System Sciences, 1993), underlie many of our algorithms. Experimental work of Finocchi, Panconesi, and Silvestri (SODA 2002) showed that a natural modification of Luby's algorithm leads to improved performance, and a rigorous explanation of this was left as an open question; we prove that the modified algorithm is provably better in the worst-case. Finally, using simulations, we study the impact of the routing strategy and the choice of parameters on the performance of our distributed algorithm for unit disk graphs.
%B Proceedings of the fifteenth annual ACM-SIAM symposium on Discrete algorithms
%S SODA '04
%I Society for Industrial and Applied Mathematics
%C Philadelphia, PA, USA
%P 1021 - 1030
%8 2004///
%@ 0-89871-558-X
%G eng
%U http://dl.acm.org/citation.cfm?id=982792.982945