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The key factors that contribute to TCP's performance degradation as TCP losses, MAC link failure detection latency, Route computation time and, Link failure notification latency Transmission Control Protocol (TCP) is the dominating end-to-end transport layer protocol which provides secure and reliable data transfer with some other protocols. The authors identify the key factors that contribute to TCP's performance with evaluate the congestion control algorithms in Reno, Vegas and SACK TCP from different aspects. In this review paper, they contend that existing approaches to improve TCP performance over mobile ad-hoc networks have focused only on a subset of the factors affecting TCP performance by SACK and TCP. For Effective resource utilization, such retransmission rate, bandwidth utilization, and packet window size, is compared.
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