Analyzing QoS metrics in IEEE 802.11ah networks with traffic differentiation

The IEEE 802.11ah specification was proposed recently to provide a communication solution for Internet of Things (IoT) devices. Among the 802.11ah related work that evaluate one of its main features, the Restricted Access Window (RAW), only a few consider Quality of Service (QoS) and the inherent traffic heterogeneity in IoT. The purpose of this paper is to compare RAW scenarios including IoT devices with different traffic patterns and QoS requirements. The results suggest that the increase of medium contention inside RAW slots in dense networks may be a limiting factor for providing QoS.

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