WLC15-4: Enhanced Per-Flow Admission Control and QoS Provisioning in IEEE 802.11e Wireless LANs

The emerging IEEE 802.11e standard is expected to provide service differentiation and resource allocation for various types of real-time traffic. To support the transmission of voice and multimedia data with performance guarantees, it is crucial to design efficient algorithms for admission control and resource allocation. Several methods have been proposed. However, most of these proposed methods may not be efficient because they assign channel access parameters (CAPs) according to the access category (AC) a flow is mapped into rather than based on the absolute QoS requirements of the flow. Using simulations we highlight the shortcomings of current admission control methods and accordingly we propose a flow-based service differentiation mechanism, which select Channel Access Parameters (CAPs) based on each traffic QoS requirements.