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2015•International Journal of Wireless and Mobile ComputingRequires access

Modelling of IEEE 802.11 DCF in the presence of hidden nodes

Rakhi Joon, Rishi Pal Singh

Open publisher page 3 citations

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.

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What this paper is about

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.

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Available 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.

Key concepts: Distributed coordination function, Computer science, Network allocation vector, IEEE 802.11, Computer network, Inter-Access Point Protocol, Hidden node problem, Carrier sense multiple access with collision avoidance

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