TY - CONF
T1 - End-to-end packet-scheduling in wireless ad-hoc networks
T2 - Proceedings of the fifteenth annual ACM-SIAM symposium on Discrete algorithms
Y1 - 2004
A1 - Kumar,V. S. Anil
A1 - Marathe,Madhav V.
A1 - Parthasarathy,Srinivasan
A1 - Srinivasan, Aravind
AB - 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.
JA - Proceedings of the fifteenth annual ACM-SIAM symposium on Discrete algorithms
T3 - SODA '04
PB - Society for Industrial and Applied Mathematics
CY - Philadelphia, PA, USA
SN - 0-89871-558-X
UR - http://dl.acm.org/citation.cfm?id=982792.982945
ER -