Why Don''t Delay-based Congestion Estimators Work in the Real-world

  title={Why Don''t Delay-based Congestion Estimators Work in the Real-world},
  author={Sushant Rewaskar and Jasleen Kaur and Don Smith},
A number of designs have been proposed for complementing TCP’s treatment of packet loss as an implicit signal of congestion, with a signal derived from measurements of round-trip times (RTT). The premise of such delay-based congestion estimators (DBCEs) is that congestion is reflected in queueing delays that can be detected by measuring changes in RTT. We conduct a large-scale empirical analysis of real-world TCP connections to evaluate the effectiveness and limitations of five prominent DBCEs… CONTINUE READING


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