Exploiting Scheduled Access Features of mmWave WLANs for Periodic Traffic Sources
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Multimedia applications, like video streaming, teleconference, tele-control of vehicles/drones, tactile internet, just to mention a few, require guaranteed transmission resources at regular intervals. In an effort to meet the stringent demand of such quasi-periodic QoS-constrained traffic sources, the Wireless Gigabit (WiGig) standard supports a contention-free channel access mechanism that makes it possible to allocate dedicated time intervals, named Service Periods (SPs), to traffic sources that require guaranteed access to transmission resources at regular intervals. As usual, however, the standard only covers the fundamental aspects that ensure interoperability, while the actual schedule logic is left open to different implementations. In this paper, we propose two algorithms for joint admission control and scheduling of periodic traffic streams with opposite performance objectives, specifically acceptance rate vs allocation time. The schemes are compared in two different scenarios, in order to shed light on some fundamental trade-offs. This work paves the way to more advanced studies, which may include more realistic traffic sources, advanced transmission mechanisms (such as direct mmWave links), and user mobility.
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