Supporting triple-play communications with TDuCSMA and first experiments

This work addresses the implications of using the Time-Division Unbalanced Carrier Sense Multiple Access (TDuCSMA) coordination function to support triple-play services. Firstly, the theoretical background of TDuCSMA is reported, presenting its advantages and discussing its full compliance with the IEEE 802.11 standard. Secondly, a prototype of TDuCSMA is discussed in details. Then, a set of experiments with the prototype implementation of TDuCSMA is presented, showing for the first time the advantages of TDuCSMA in a realistic setting with audio, video and elastic data applications. Experimental results show the superiority of TDuCSMA over the legacy 802.11 Medium Access Control (MAC) in terms of both channel utilization and Quality of Experience (QoE) as measured at the application level.