As of July 2014, algorithms that provide equivalent or better receiver feedback in a more reliable approach are an active research topic, and one experimental proposal is known as "More accurate ECN feedback in TCP" (Accurate ECN).
截至2014年7月 (2014-07)，以更可靠的方法提供等效或更好的接收器反馈的算法是一个活跃的研究课题，并有一个被称为“More accurate ECN feedback in TCP”（“TCP中更准确的ECN反馈”）（Accurate ECN，精准ECN）的实验建议。