A Priority Queuing Model for HCF Controlled Channel Access (HCCA) in Wireless LANs

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Executive Summary

Recently, there has been a rapid growing interest in new applications requiring Quality of Service (QoS) guarantees through Wireless Local Area Networks (WLAN). These demands have led to the introduction of new 802.11 standard series to enhance access medium supporting QoS for multimedia applications. However, some applications such as Variable Bit Rate (VBR) traffic address some challenges in the Hybrid Coordination Function (HCF) nominated to provide QoS. This paper presents a novel priority queuing model to analyze a medium access in the HCF Controlled Channel Access (HCCA) mode.

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