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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Enhanced TCP NCE: A Modified Non-Congestion Events Detection, Differentiation and Reaction to Improve the End-to-End Performance Over MANET
verfasst von : J. Govindarajan, N. Vibhurani, G. Kousalya
Erschienen in: Progress in Intelligent Computing Techniques: Theory, Practice, and Applications
Verlag: Springer Singapore
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Abstract
The characteristics of Mobile Ad hoc Network (MANET) like error and reordering degrades the performance of TCP-based applications. Among the many proposals to reduce the impact of non-congestion events, TCP-NCE has been designed as the unified solution to discriminate between non-congestion and congestion events, and to respond to the events. Our initial analysis on TCP-NCE and other schemes (TCP-DCR and SACK-TCP) showed that the existing schemes including TCP-NCE fail to improve end-to-end performance in the presence of congestion, error, and reordering due to mobility and multipath routing. To overcome this problem, we designed “Enhanced TCP NCE” protocol to reduce the false differentiation on non-congestion events and to optimize the response procedure to those events. Our simulation results showed that the enhancement increased the performance by 15–20% over TCP-NCE. In addition, the consistency in yielding the higher performance throughout the simulation is observed for our protocol.