An Adaptive Transmission Strategy for Tiled 360-Degree VR Videos in NOMA Systems
Pages 1765 - 1773
Abstract
Recently, virtual reality (VR) has become popular in many fields. Users can view a 360-degree video in all directions and have an immersive experience with a VR device. However, the transmission of a 360-degree video, which is compared to a traditional video, is a significant burden on wireless networks. In other words, users may suffer poor quality of experience (QoE) under constrained power. In order to improve transmission efficiency and ensure the QoE of users, in this paper, we propose an adaptive transmission strategy (ATS) for resource allocation in 360-degree videos to multiple users using a non-orthogonal multiple access (NOMA) scheme. In ATS, the delivery mode (multicast or unicast) of tiles is based on the users' field of views (FoVs) and their channel conditions, and the quality of tiles is dynamically determined by their priorities. The simulation results show that ATS significantly improves the QoE of users under constrained power.
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Published: 21 May 2024
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