We propose Accel-Brake Control (ABC), a simple and deployable explicit congestion control protocol for network paths with time-varying wireless links. ABC routers mark each packet with an "accelerate" or "brake", which causes senders to slightly increase or decrease their congestion windows. Routers use this feedback to quickly guide senders towards a desired target rate. ABC requires no changes to header formats or user devices, but achieves better performance than XCP. ABC is also incrementally deployable; it operates correctly when the bottleneck is a non-ABC router, and can coexist with non-ABC traffic sharing the same bottleneck link. We evaluate ABC using a Wi-Fi implementation and trace-driven emulation of cellular links. ABC achieves 30-40% higher throughput than Cubic+Codel for similar delays, and 2.2X lower delays than BBR on a Wi-Fi path. On cellular network paths, ABC achieves 50% higher throughput than Cubic+Codel.

翻译：我们建议 Accel-Brake 控制(ABC), 这是一种简单且可部署的、有时间变化的无线链接的网络路径明确阻塞控制协议。 ABC 路由器用“ 加速” 或“ 刹车” 标记每包, 使发送者略增或减少阻塞窗口。 路由器使用这种反馈来快速引导发送者达到预期的目标速率。 ABC 不需要修改信头格式或用户设备, 但其性能优于 XCP 。 ABC 也可以渐进地部署; 当瓶颈是一个非ABC 路由器时, 它可以正确运行, 并且可以与非ABC 共享同一瓶车链路的非 ABC 交通连接共存。 我们用无线- Fi 执行和 微量模拟手机链接来评估ABC 。 ABC 类似延误的吞吐量比 Cubic+ Codel 高出30- 40%, 和2.2X 在无线路径上比BR 慢。 在移动电话路径上, ABC 的吞吐量比C+Codel 高出50%。