Explore a conference talk on proactive energy-aware adaptive video streaming for mobile devices. Learn about the challenges of traditional reactive energy-aware app adaptation and discover how integrating user-specified energy budgets with app adaptation logic can improve quality-of-experience. Examine the design, implementation, and performance tradeoffs between reactive and proactive approaches in ABR-based video streaming. Understand how proactive energy-aware ABR video streaming can be easily implemented by leveraging built-in adaptation of modern apps, potentially improving QoE by up to 44.8% when streaming 360-degree videos to certain mobile devices under low power budgets.
Proactive Energy-Aware Adaptive Video Streaming on Mobile Devices
Overview
Syllabus
Intro
Modern Mobile Apps are Power Hungry
Case Study: 360° Video Streaming on YouTube
Energy-aware App Adaption
Outline
Classic Energy-aware App Adaptation: System-level
Characteristics of Classic Energy-aware App Adaptation
Reactive Adaptation Causes Oscillation
Key Observation: Modern Apps Have Proactive Built-in Adaptation • Built-in adaptation: Apps proactively adapt data fidelity to network dynamics or other system constraints to optimize QoE
Key Idea: Proactive Energy-aware Adaptation
Background of ABR Video Streaming
ABR Problem Formulation [Sigcomm'15]
Challenges of Proactive Energy-aware ABR
Trace-driven Evaluation
Impact of Different Proactive Design Options under Low Power Budget on Pixel 2
Performance Comparison between Reactive and Proactive Approaches
QoE Breakdown Comparison between Reactive and Proactive Approaches
Generalization
Summary
Taught by
USENIX
