Research on Interference and Topology Control in Wireless Sensor Networks

摘要

Topology control has been well studied in wireless sensor networks. Power control technology as one way of topology control can be used to indirectly reduce the interference due to low degree sparse topologies produced by it. It has often been assumed that a sparse graph implicitly has low interference, but recent research shows that that is not necessarily true. In this paper, we discuss several typical methods to measure interference, and present a new interference model that aims to describe the interference of the entire network. We present LIST, a topology control algorithm that serves two purposes: it minimizes the interference in the network according to our metrics, and it keeps the spanner properties of the original graph. The paper is completed by simulations that compare different topologies with respect to different interference metrics. Some analyses of simulations results are given in the end.