Provided by: Institute of Electrical & Electronic Engineers
A prototype of an enhanced QoS 802.11n circuit using a Tournament Contention Function (TCF) is presented in this paper. First, the TCF developed is briefly explained. Then, a simple hardware implementation of this protocol in compliance with the 802.11n standard is proposed and evaluated. IEEE 802.11n  is the current Wi-Fi standard that introduced new PHY and MAC layers enhancements. Based on the IEEE 802.11ag recommendation, it has extended data rates up to 600 Mbps. Despite the increased throughput, its access protocol presents constraints to achieve the requirements of the voice/video service: large average access times and especially highly variable access times inconsistent with a synchronous transfer of the voice and video streams.