Soft Computing

, Volume 21, Issue 8, pp 1991–2004 | Cite as

Channel Status based Sliding Contention Window (CS-SCW) algorithm: A Fuzzy Control Approach for Medium Access in Wireless Networks

Methodologies and Application

Abstract

The dynamic nature of IEEE802.11 Wireless LAN network poses several challenges in developing a contention resolution scheme. A contention control algorithm guarantees maximum channel throughput by reducing collisions and improves the fairness among competing nodes. Based on the local history and neighbouring station’ status, a new algorithm namely Channel Status based Sliding Contention Window (CS-SCW) algorithm is proposed in this paper to adopt the optimum contention window interval. In the proposed algorithm, a fuzzy controller is used to infer about the current channel condition and to regulate the random access in network. Simulation results confirm the enhanced performance of the proposed CS-SCW algorithm in terms of success rate, packet loss, fairness index and energy consumption.

Keywords

IEEE802.11 WLAN Contention control Backoff algorithm Fuzzy logic system 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of Computer Science and EngineeringNational Institute of TechnologyTiruchirappalliIndia

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