QoE Impact from Router Buffer sizing and Active Queue Management
summary
Experiments compare different backbone router buffer sizes and home-router Active Queue Management (FQ‑CoDel) and report concrete effects: tuning buffer size reduces median playback latency by about 1 s median latency reduction and cuts interruption rate by 30% fewer interruptions; AQM yields consistent play delay and steadier supplemental playback; measurements use CDN stacks with controlled buffers, TCP traffic and competing uploads and analyze rebuffer rate RTT and quality distribution.
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chapters (9)
- 0:00Intro
- 2:03Netflix Content Delivery Network
- 3:24The purposes of buffers in routers
- 4:36Impact of buffer sizing
- 9:20Network Metrics under Congestion
- 12:48Impact of Play Delay on Supplemental Playback
- 14:04Summary on the impacts of buffer sizing
- 16:26Active Queue Management (AQM)
- 18:09Lab Experiment Setup - Upstream Congestion
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