Using β-skeletons for localized topology control in wireless ad hoc networks

Abstract

We propose a novel approach for sparse topology generation in wireless ad hoc networks based on a graph structure known as /spl beta/-skeletons. Two efficient algorithms are presented in this paper for creating a connected topology from an underlying /spl beta/-skeleton. One algorithm is a localized algorithm that uses two-hop neighborhood information to generate a connected topology, with a running time of O(n). The other is a distributed algorithm that runs on each component of the /spl beta/-skeleton creating a connected structure from the disconnected /spl beta/-skeleton graph, the running time is O(nlogn). Simulations show consistent decrease in node degree in the resulting topology. The observed decrease is greater than 33% in comparison to the relative neighborhood graph (RNG) and greater than 50% in comparison to other topology structures such as, the Gabriel graph (GG) and the Yao construction on GG.