ABSTRACT
The world today perceives the wireless access enabled by Institute of Electrical and Electronics Engineers (IEEE) 802.11 more as a ubiquitous utility than as the novelty it once was only a few years ago. Untethering them from a desktop, wireless network enables end users to receive multimedia content in a manner approaching that of wireline networks. However, legacy IEEE 802.11 possesses neither sufficient capacity nor adequate QoS capability for multimedia. Thus, several task groups have been established within IEEE 802.11 to address the urgent need of proper QoS support demanded by a vast variety of applications in different deployment scenarios. This chapter intends to provide an exposition and a discussion on key techniques that have been proposed or adopted in 802.11e, 802.11n, and 802.11s.
