End-to-End Delay Bound for Wireless uVRServices over 6G Terahertz Communications

The forthcoming sixth generation (6G) networktechnology will trigger tremendous changes across several ap-plication scenarios and even in the way we work, communicateand, more in general, organize our everyday life. In particular,in such a new digital era, Virtual Reality (VR) technology willplay a fundamental role, carrying with it numerous challengesas regards the increased demand of high rate, high reliableand low latency communications. In this sense, an effectiveend-to-end delay analysis becomes imperative to pursue anefficient design of the foreseen VR services. Towards this goal,this paper proposes the end-to-end delay investigation throughthe martingale theoretical bound and considering the stochasticnetwork calculus principles for its formulation. The performancediscussion focuses on the achieved communications reliability,comparing the analytical predictions obtained via the martingalebound with the simulation results, and the Markov queuingtheory based alternative. The presented results confirm thevalidity of the proposed approach, exhibiting noticeable closenessbetween the theoretical bound and the simulation outcomes.