Interference in wireless multi-hop ad-hoc networks and its effect on network capacity

R Hekmat, PFA Van Mieghem

Research output: Contribution to journalArticleScientificpeer-review

85 Citations (Scopus)

Abstract

In this paper we propose a new model to calculate interference levels in wireless multi-hop ad-hoc networks. This model computes the expected value of Carrier to Interference ratio (C/I) by taking into account the number of nodes, density of nodes, radio propagation aspects, multi-hop characteristics of the network, and the amount of relay traffic. The expected values of C/I are used to determine network capacity and data throughput per node. Our model uses a regular lattice for possible locations of mobile nodes. This enables us to calculate the expected values of C/I, without having detailed information about movement patterns and exact location of all nodes at any moment. Based on this model we have evaluated effects of variations in the network size, network density and traffic load on C/I, and consequently throughput of the network. Our calculations suggest that interference is upper-bounded in wireless ad-hoc networks that use carrier sensing for medium access control. Further, from the point of view of throughput optimization, our calculations show limits on the network size and input data rates per node. Keywords ad-hoc networks, sensor networks, analytical methods, modelling, interference, throughput
Original languageUndefined/Unknown
Pages (from-to)389-399
Number of pages11
JournalWireless Networks: the journal of mobile communication, computation and information
Volume10
Issue number4
Publication statusPublished - 2004

Keywords

  • academic journal papers
  • ZX CWTS JFIS < 1.00

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