Fei Song, Hongke Zhang, Sidong Zhang, Fernando M. V. Ramos, Jon Crowcroft
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Due to the dynamic nature of the Internet, the characteristic parameters of network paths are continually changing. The round trip time (RTT) can be used to estimate retransmission timeouts with reasonable accuracy. However, using RTT to evaluate forward or backward delays is not suitable. By identifying this shortcoming, we propose a relative delay estimator (RDE) to make a distinction between all available paths and build a retransmission policy based on it.
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