Toward Supporting XR Services: Architecture and Enablers

Abstract

Emerging XR applications, including Holography, Augmented, Virtual and Mixed Reality, are characterized by unprecedented requirements for Quality of experience (QoE), largely exceeding those currently attainable. To cope with these requirements, noticeable efforts and a number of initiatives are ongoing to enhance the current communications technologies, especially in the direction of supporting ultra-low latency and increased bandwidth. This work proposes an architecture that puts together the key enablers to support future XR applications, highlighting the shortcomings of existing technologies and leveraging the ongoing innovations. It demonstrates the feasibility of the proposed architecture by describing the processes driving the platform with relevant use case scenarios, and mapping the envisioned functionality to existing tools.

A Scalable Communication Model to Realize Integrated Access and Backhaul (IAB) in 5G

“…Now, considering that the number of available channels is K ⋆ , assume that the network density is increased from λ to Mλ, where M is a large number. Similar to (5), the new network requires N (ς (E [µ (Mλ)])) channels to satisfy target SINRs by transmitting with the expected minimum powers, where E [µ (Mλ)] is the anticipated interference radius in the new network, that is (1/2…”

“…2/3 π/4⌉, which is equal to (5). Therefore, even in a M times denser network, the SINR of all SBSs can still be maintained with the same number of channels.…”

“…According to Sub-section IV-B, if the number of channels equals (5) in MCM, the expected minimum transmit power required to maintain γ is γσ 2 (1/(gϑ2 √ λ) 3 ). Given this, for a network with density λ, the sum of transmit powers will conveniently equal Ω (A) γσ 2 /8gϑ √ λ. Consequently, the sum of expected transmit powers is on the order of O(1/ √ λ), indicating that it is a decreasing function of network density.…”

“…The strong tides that have shaped digital technologies over the past three decades continue to expand and harden every day. New use cases, such as Unmanned Aerial Vehicle (UAV) based service provision [1]- [3], holographic communications [4], and extended reality [5]- [7], have been introduced as the Internet evolves towards a deterministic network of things [8]- [12]. In the near future, due to the fact that billions of devices are anticipated to have stringent quality of service requirements, high-capacity deterministic communication infrastructures must be deployed [13].…”

VR-Based Immersive Service Management in B5G Mobile Systems: A UAV Command and Control Use Case

“…In this vein, 5G networks are expected to continue paving the way for enabling different IoT applications [5], [6], particularly in the case of remote immersive services, and/or virtual reality (VR)-based applications, such as telesurgery, self-driving, and UAV-based applications. VR technology has recently received increasing interest in both academia and industry [7], [8]. It is rapidly progressing toward customers' use to bring an immersive experience to a variety of applications.…”