AUGUR: Practical Mobile Multipath Transport Service for Low Tail Latency in Real-Time...
Talkat 21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24) · 2024-04-16..04-18·
summary
AUGUR is a server-side multipath transport service that builds per-session state probability models and solves an Integer Linear Programming problem to pick when to use cellular as a backup; it implements frame-level retransmission and a primary-path switch. Trace-driven emulation with mahimahi and a year-long Tencent Start deployment show up to 66% reduction in tail latency, 99.5% drop in frame-stall rate, 88.1% less cellular data than other multipath schemes, and about 20% more user playtime.
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chapters (10)
- 0:00AUGUR introduction
- 2:27Long tail latency in Wi-Fi
- 4:16Network insights and user sensitivity
- 7:06Design goals and multipath dilemma
- 9:17Video stall probability model
- 11:44Backup path strategies
- 13:08System implementation
- 14:16Evaluation and performance
- 15:43Real-world deployment impact
- 16:45Summary and future
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