Toward Low-Latency and Ultra-Reliable Virtual Reality

Elbamby, Mohammed S.; Perfecto, Cristina; Bennis, Mehdi; Doppler, Klaus

doi:10.1109/mnet.2018.1700268

Cited by 460 publications

(314 citation statements)

References 13 publications

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“…A number of recent works attempted to address the challenges of VR communications [2], [5]- [8]. In [2], the authors discuss the current and future trends of wireless VR systems.…”

Section: Introductionmentioning

confidence: 99%

On the Reliability of Wireless Virtual Reality at Terahertz (THz) Frequencies

Chaccour

Amer

Zhou

et al. 2019

2019 10th IFIP International Conference on New Technologies, Mobility and Security (NTMS)

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Guaranteeing ultra reliable low latency communications (URLLC) with high data rates for virtual reality (VR) services is a key challenge to enable a dual VR perception: visual and haptic. In this paper, a terahertz (THz) cellular network is considered to provide high-rate VR services, thus enabling a successful visual perception. For this network, guaranteeing URLLC with high rates requires overcoming the uncertainty stemming from the THz channel. To this end, the achievable reliability and latency of VR services over THz links are characterized. In particular, a novel expression for the probability distribution function of the transmission delay is derived as a function of the system parameters. Subsequently, the end-to-end (E2E) delay distribution that takes into account both processing and transmission delay is found and a tractable expression of the reliability of the system is derived as a function of the THz network parameters such as the molecular absorption loss and noise, the transmitted power, and the distance between the VR user and its respective small base station (SBS). Numerical results show the effects of various system parameters such as the bandwidth and the region of non-negligible interference on the reliability of the system. In particular, the results show that THz can deliver rates up to 16.4 Gbps and a reliability of 99.999% (with a delay threshold of 30 ms) provided that the impact of the molecular absorption on the THz links, which substantially limits the communication range of the SBS, is alleviated by densifying the network accordingly.Index Terms-virtual reality (VR), terahertz, reliability, ultra reliable low latency communications (URLLC).

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“…A number of recent works attempted to address the challenges of VR communications [2], [5]- [8]. In [2], the authors discuss the current and future trends of wireless VR systems.…”

Section: Introductionmentioning

confidence: 99%

On the Reliability of Wireless Virtual Reality at Terahertz (THz) Frequencies

Chaccour

Amer

Zhou

et al. 2019

2019 10th IFIP International Conference on New Technologies, Mobility and Security (NTMS)

View full text Add to dashboard Cite

show abstract

“…VR applications are popularly used as a form of entertainment such as in gaming. Moreover, VR is being studied in the medical, industrial, military, and educational domains . In addition, technology development for devices such as glasses, body suits, gloves, and head‐mounted displays (HMDs) can be competitive.…”

Section: Introductionmentioning

confidence: 99%

“…To develop VR content that ensures 360‐degree viewing and user‐interaction experience, a network with high bandwidth (approximately 1 GHz) and low latency (10 ms) is required . In addition, high‐quality VR systems must stream multiple Gbps of data from a content server to devices such as HMDs.…”

Section: Introductionmentioning

confidence: 99%

Simulation and measurement: Feasibility study of Tactile Internet applications for mmWave virtual reality

Dao

Kim

et al. 2020

ETRI Journal

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Numerous wearable technology companies have recently developed several head‐mounted display (HMD) products for virtual reality (VR) services. 5G wireless networks aim at providing high‐quality 3D multimedia services such as VR, augmented reality, and mixed reality. In this study, we examine the application of millimeter‐wave (mmWave) technology to realize low‐latency wireless communication between an HMD and its content server. However, the propagation characteristics of mmWave present several challenges such as the deafness, blockage, and beam alignment problems, and interference among content servers. In this study, we focus on an environment that provides VR services in the mmWave band and introduce existing techniques for addressing such challenges. In addition, we employ a commercialized IEEE 802.11ad VR dongle to measure the actual data rate of an mmWave VR application and identify the degree to which the performance deteriorates when the above problems occur. Finally, we verify the feasibility of the proposed solutions through a simulation of several VR scenarios in the mmWave band.

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“…Existing HMDs can use only part of a given ODI, called the viewport [4], so even higher resolutions are required to provide an acceptable level of quality of experience (QoE) [5] in VR. For instance, according to recent studies [6], the resolution of the captured ODI should be 21600×10800 (i.e., 60 pixels per degree) to * are equal contributors. 978-1-7281-1817-8/19/$31.00 2019 European Union provide a sufficiently high-quality ODI for existing HMD devices.…”

Section: Introductionmentioning

confidence: 99%

Super-resolution of Omnidirectional Images Using Adversarial Learning

Özçinar

Rana

Smolić

2019

2019 IEEE 21st International Workshop on Multimedia Signal Processing (MMSP)

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An omnidirectional image (ODI) enables viewers to look in every direction from a fixed point through a headmounted display providing an immersive experience compared to that of a standard image. Designing immersive virtual reality systems with ODIs is challenging as they require high resolution content. In this paper, we study super-resolution for ODIs and propose an improved generative adversarial network based model which is optimized to handle the artifacts obtained in the spherical observational space. Specifically, we propose to use a fast PatchGAN discriminator, as it needs fewer parameters and improves the super-resolution at a fine scale. We also explore the generative models with adversarial learning by introducing a spherical-content specific loss function, called 360-SS. To train and test the performance of our proposed model we prepare a dataset of 4500 ODIs. Our results demonstrate the efficacy of the proposed method and identify new challenges in ODI superresolution for future investigations.

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Toward Low-Latency and Ultra-Reliable Virtual Reality

Cited by 460 publications

References 13 publications

On the Reliability of Wireless Virtual Reality at Terahertz (THz) Frequencies

On the Reliability of Wireless Virtual Reality at Terahertz (THz) Frequencies

Simulation and measurement: Feasibility study of Tactile Internet applications for mmWave virtual reality

Super-resolution of Omnidirectional Images Using Adversarial Learning

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