ABC: A Simple Explicit Congestion Controller for Wireless Networks
summary
ABC (Accel-Brake Control) is an explicit congestion control protocol for paths with time-varying wireless links that marks packets at routers with simple “accelerate” or “brake” signals to make senders slightly increase or decrease their congestion windows. It requires no header or end-host changes, is incrementally deployable alongside non‑ABC routers and traffic, and is evaluated on Wi‑Fi and cellular traces showing substantial throughput and delay improvements over Cubic+Codel, XCP, and BBR.
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chapters (12)
- 0:00Start
- 0:14Wireless Links have Variable Rates
- 5:51ABC Overview
- 6:07ABC Sender
- 8:08ABC Router: Target Rate
- 9:16ABC Router: Feedback
- 11:30ABC Router: Enqueue vs Dequeue
- 13:49ABC: High Utilization, Low Delay
- 14:24Evaluation: Real Application
- 15:26Evaluation: Cellular
- 16:43Evaluation: Wi-Fi
- 16:56Summary
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