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

<div>Hidden/exposed terminal problems in loose and tight coupling scenarios. (a) Exposed terminal case in loose coupling. (b) Hidden terminal case in loose coupling. (c) Hidden terminal case in tight coupling. (d) Exposed terminal case in tight coupling.</div>

Wireless Communications and Mobile Computing

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Figure 2

Figure 2: SDN-Based Centralized Downlink Scheduling with Multiple APs Cooperation in WLANs 