Study and Analysis of Different TCP Variants

TCP is a Transport Layer Protocol, part of the TCP/IP suite to maintain the flow, congestion, and performance of currently increasing internet traffic. Over this period of time, many TCP variants have been developed by researchers to cater the need of changing network media and dynamic topology for improving overall end to end QoS performance parameters such as throughput, jitter, delay, and packet loss for both wired and wireless networks. In this review paper, some variants are described in categories, such as Loss-Based, Delay-Based and Hybrid using the algorithms and network media. It has been observed that these variants are not developed taking in to consideration of the end applications which has a particular need and expectation from the TCP and hence need to be analyzed for same. This paper highlights on conventional and recent TCP variants and its comparative study which could be useful to many researchers to reduce the lacuna of different variants.