A Comparative Performance Analysis of TCP Congestion Control Algorithms: Newreno, Westwood, Veno, BIC, and Cubic

The transmission control protocol (TCP) congestion control is one of the key mechanisms that ensure the smooth flow of the data in the networks. The congestion control algorithm is used to synchronize the input rate (sending rate) with a receiving rate. The input rate is the rate at which packets are sent from sender to receiver while the receiving rate is the rate at which packets are received at the receiver. The congestion control algorithm uses window size to synchronize the sending rate and receiving rate. A network simulator-3 (ns-3) is a popular tool used to evaluate the existing TCP congestion control algorithms to know more insight about the TCP congestion control algorithms. That helps to develop a new algorithm. We have carried out a comparative study window size for various congestion control algorithms viz., New Reno, Veno, BIC, CUBIC and Westwood. We have also analyzed these algorithms for throughput using ns-3.