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Vast use and emerging popularity of Wireless Local Area Network (WLAN) creates a crisis of bandwidth on allocated channel, and existing fixed channel allocation's limitation and the variety of the user density, mobility and data transmission requirement caused the degradation on overall throughput of the WLAN. After considering different proposals and existing system of IEEE802.11 network, this paper is to propose an enhanced variable channel allocation technique in two different methods: 'Fixed presumed' and 'Intelligent variable', and a simple algorithm based on bandwidth requirement, performance of the network and Quality of Service (QoS) of the network.
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