A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks

Figure 12

Transmission probabilities of voice and video classes for five different scenarios ($n=24$). With variance increment, Intra-class contention takes place of Inter-class contention. (right): ${\tau }_i$ for video class increases and then decreases. (left): In contrast to video class, in voice class ${\tau }_i$ firstly decreases and then increases.

(a)

(b)