Fuzzy Rule based Channel Allocation for Efficient Spectrum Management in WiMAX Networks

The WiMAX (IEEE 802.16) technology offers a mechanism to create a multi-hop mesh network and provides a low cost alternative to the cabled access networks. This paper proposes a fuzzy rule based channel allocation technique for efficient spectrum management in multi-channel IEEE 802.16 network (WiMAX). The Subscriber Stations are categorized on the basis of their average traffic pattern. The frequency use by the network is optimized through re-allocation of sub-carrier frequency without degrading the QoS. Simulation using Matlab have been used to demonstrate the effectiveness of the proposed method in terms of Channel Utilization Ratio and Channel Acquisition Delay.