Local construction of near-optimal power spanners for wireless ad hoc networks

DSpace/Manakin Repository

LDR Home . . . Xia, Ge Publications of Ge Xia View Item

Local construction of near-optimal power spanners for wireless ad hoc networks

Show full item record


Title: Local construction of near-optimal power spanners for wireless ad hoc networks
Author: Kanj, I. A.; Perkovic, L.; Xia, Ge
Abstract: We present a local distributed algorithm that, given a wireless ad hoc network modeled as a unit disk graph U in the plane, constructs a planar power spanner of U whose degree is bounded by k and whose stretch factor is bounded by 1 + (2 sin pi/k)(p), where k >= 10 is an integer parameter and p is an element of [2, 5] is the power exponent constant. For the same degree bound k, the stretch factor of our algorithm significantly improves the previous best bounds by Song et al. We show that this bound is near-optimal by proving that the slightly smaller stretch factor of 1 + (2 sin pi/k+1)(p) is unattainable for the same degree bound k. In contrast to previous algorithms for the problem, the presented algorithm is local. As a consequence, the algorithm is highly scalable and robust. Finally, while the algorithm is efficient and easy to implement in practice, it relies on deep insights on the geometry of unit disk graphs and novel techniques that are of independent interest.
URI: http://hdl.handle.net/10385/622
Date: 2009

Files in this item

Files Size Format View
Xia-IEEETransactions-vol8-no4-2009.pdf 452.7Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Search LDR


Advanced Search

Browse

My Account