SDN-Based Centralized Downlink Scheduling with Multiple APs Cooperation in WLANs

Figure 9

Channel utilization versus number of STAs in overlapping area for 2 and 4 APs in loose coupling and tight coupling scenarios. (a) 2 APs in loose coupling scenario, (b) 2 APs in tight coupling scenario, (c) 4 APs in loose coupling scenario, and (d) 4 APs in tight coupling scenario.

(a)

(b)

(c)

(d)