Title: Modelling of IEEE 802.11 DCF in the presence of hidden nodes

Authors: Rakhi Joon; Rishi Pal Singh

Addresses: Department of Computer Science and Engineering, Guru Jambheshwar University of Science & Technology, Hisar 125001, Haryana, India ' Department of Computer Science and Engineering, Guru Jambheshwar University of Science & Technology, Hisar 125001, Haryana, India

Abstract: Today, the most commonly used technology for wireless networks is IEEE 802.11. The performance of the Medium Access Control (MAC) layer, which consists of Distributed Coordination Function (DCF) and Point Coordination Function (PCF), has been examined over a long time period. The DCF is the random access scheme that uses CSMA/CA in IEEE 802.11 MAC layer protocol. There are various issues related to the performance evaluation of IEEE 802.11 DCF and one of the important issues is the problem of hidden terminals which exists in practice in any wireless network. In this paper, a two-dimensional analytical model is proposed for the analysis of IEEE 802.11 DCF in the presence of hidden terminals for both basic access and RTS/CTS modes by making use of the Markov chain.

Keywords: IEEE 802.11; MAC; CSMA/CA; DCF; hidden terminals; Markov chain; modelling; hidden nodes; wireless networks; medium access control; distributed coordination function; point coordination function; PCF; performance evaluation.

DOI: 10.1504/IJWMC.2015.071674

International Journal of Wireless and Mobile Computing, 2015 Vol.9 No.1, pp.70 - 77

Received: 16 Aug 2014
Accepted: 16 Feb 2015
Published online: 14 Sep 2015 *

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