Interference minimum network topologies for ad hoc networks

  • Authors:

  • Guinian Feng;Pingyi Fan;Soung Chang Liew

  • Affiliations:

  • Department of Electronic Engineering, Tsinghua University, Beijing, P.R. China 100084 and National Mobile Communications Research Laboratory, Southeast University, China 210096;Department of Electronic Engineering, Tsinghua University, Beijing, P.R. China 100084 and National Mobile Communications Research Laboratory, Southeast University, China 210096;Department of Information Engineering, The Chinese University of Hong Kong

  • Venue:
  • Wireless Communications & Mobile Computing
  • Year:
  • 2012

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Abstract

This paper investigates the topology control problem with the goal of minimizing mutual interferences in wireless ad hoc networks. It is known that interference is considered as a relationship between link and node in previous works. In this paper, we attempt to capture the physical situation of space-division multiplex more realistically by defining interference as a relationship between any two bidirectional links. We formulate the pair-wise interference condition between any two bidirectional links, and demonstrate that the interference condition is equivalent by employing the equal-power allocation strategy and by employing the minimum-power allocation strategy. Then we further study the typical interference relationship between a link and its surrounding links. To characterize the extent of the interference between a link and its surrounding links, a new metric, the interference coefficient, is given, and its property is explored in detail by means of analysis and simulation. Based on the insight obtained, a centralized algorithm, BIMA, and a distributed algorithm, LIMA, are proposed to control the network interference. Our simulation indicates that BIMA can minimize the network interference while conserving energy and maintaining good spanner property, and LIMA has relatively good interference performance while keeping low node degree, compared with some well-known algorithms. Besides, both BIMA and LIMA show good robustness to additive noises in terms of interference performance. Copyright © 2010 John Wiley & Sons, Ltd.