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SHVC Tile-Based 360-Degree Video Streaming for Mobile VR: PC Offloading Over mmWave.
Dien Van Nguyen1, Tuan Thanh Le2, Sangsoon Lee3
1Department of Computer Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam, Gyeonggi 1320, Korea. diennv1990@gc.gachon.ac.kr.
Sensors (Basel, Switzerland)
|November 4, 2018
Summary
This study introduces a novel architecture for 360-degree video streaming in virtual reality (VR) using scalable High-Efficiency Video Coding (SHVC) and millimeter wave (mmWave) networks. The approach significantly reduces bandwidth and decoding time for immersive VR experiences.
Area of Science:
- Computer Science
- Electrical Engineering
- Multimedia Systems
Background:
- High-quality 360-degree video streaming for virtual reality (VR) demands substantial bandwidth, posing challenges for current wireless systems.
- Millimeter wave (mmWave) 60 GHz networks offer gigabit connectivity and large unlicensed bandwidth, presenting a potential solution for high-demand video applications.
- Scalable High-Efficiency Video Coding (SHVC) provides a framework for adaptive video streaming, crucial for varying network conditions and user requirements.
Purpose of the Study:
- To investigate and propose an efficient architecture for 360-degree video streaming tailored for mobile virtual reality (VR) applications.
- To leverage the capabilities of SHVC and millimeter wave (mmWave) communications for enhanced video delivery.
- To address the bandwidth and processing challenges associated with high-fidelity VR experiences.
Main Methods:
- A conceptual architecture combining advanced tiled-SHVC with mmWave communications was developed.
- The architecture incorporates tile-based SHVC for optimized parallel decoding of 360-degree video.
- A Personal Computer (PC) offloading mechanism was designed for transmitting uncompressed video, focusing on the user's viewport.
Main Results:
- The tiled extractor method demonstrated a bandwidth reduction exceeding 47% for 360-degree video streaming.
- The tile partitioning mechanism improved decoding time by up to 25%.
- The PC offloading mechanism successfully transmitted decoded 360-degree video (viewport only) to mobile devices via mmWave networks.
Conclusions:
- The proposed tiled-SHVC and mmWave architecture effectively addresses the bandwidth and decoding challenges of 360-degree video streaming for mobile VR.
- Significant improvements in bandwidth efficiency and decoding performance were achieved, paving the way for more immersive VR experiences.
- The integration of PC offloading with mmWave communication offers a viable solution for delivering high-quality VR content to mobile devices.
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