An Enhanced Congestion Control with Bit Error Identification for TCP-Vegas

Abstract

TCP is a connection oriented and reliable protocol of Transport layer. That is used for wireless communication and for that different types of TCP variants are available like TCP-TAHOE, TCP-RENO, and TCP-NEW RENO etc. But only TCP-VEGAS use better bandwidth estimation and so that it has better throughput, congestion control, delayed network and mobility control and stability than other TCP variants in heterogeneous networks. In recent year TCP-ARTA VEGAS and TCP VEGAS THRESOLDBASED CONGESTION CONTROL significantly improved the fairness of bandwidth allocation and bit error rate in heterogeneous network but this does not identified or resolve the problem when multiple packet loss and not identified proper reason for packet loss in the network. TCP-Vegas unnecessarily decrease the congestion window size. In our work we will consider the bit error and multiple packet loss problems of TCP-VEGAS and propose algorithm for improve throughput and bandwidth allocation and provide identification about packet loss reason using RED and ECN notification over heterogeneous network.