Motivation
两种CC: current-based（react to variations） 和 voltage-based （react to absolute values）
上图非常形象地说明了两种CC各自本质上的不足.
论文在Motivation部分将已有CC统一成了一个抽象模型，借助一些控制理论，得到两个具体的takeaway:
While voltage-based CC can in principle meet the desired equilibrium state requirements, current-based CC cannot.
Current-based CC is superior in terms of fast reaction but lacks equilibrium state properties while voltage-based CC eventually reaches a unique equilibrium but overreacts in its response for almost any initial state resulting in long trajectories from initial state to equilibrium state.
PowerTCP
借助INT获得Power: power = currrent * voltage
算法设计：
Standalone Version: 不依赖于INT获得队长信息，使用RTT间接估计
Evaluation
目前没有真实系统实现
最后论文还评估了PowerTCP在Reconfigurable DCN场景下的性能。PowerTCP的rapid reaction to congestion and available bandwidth适用于这种带宽快速变化的场景。
Thinking
亮点: Motivation部分的分析和“Power”概念。
