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In a Mobile Ad Hoc Network (MANET), temporary link failures and route changes happen frequently. With the assumption that all packet losses are due to congestion, TCP performs poorly in such environment. While there has been some research on improving TCP performance over MANET, most of them require feedback from the network or the lower layer. In this research, we explore a new approach to improve TCP performance by detecting and responding to out-of-order packet delivery events, which are the results of frequent route changes. In our simulation study, this approach had achieved on average 50% performance improvement, without requiring feedback from the network or the lower layer.
Wang et al. (Sun,) studied this question.