Performance evaluation of tcp spurious timeout detection methods under delay spike and packet loss emulating lte handover

Abstract

This paper describes the performance evaluation of the well-known spurious timeout detection methods implemented within TCP, Eifel, DSACK, and F-RTO, through experiments with the network emulator emulating handovers over LTE (Long Term Evolution) networks. Specifically, the emulator supports to insert the time-variant delay and packet loss in TCP streams. By taking account of the lossless handover in LTE, this paper shows the results for the cases only the delay spike is inserted, and both delay spike and packet loss are inserted. In the former case, the three methods show the similar performance, but in the latter case, the performance of Eifel is worse than the others. This paper also shows the results when two methods are used together for the delay spike and packet loss case, and indicates that the performance is not improved even if multiple spurious timeout detection methods are implemented.