A Novel Approach of Available Bandwidth Estimation for Heterogeneous Networks

Abstract

Reliable transport protocols such as the transmission control protocol (TCP) are tuned to perform well in traditional wired networks where packet losses occur mostly because of congestion. However, networks with wireless and lossy links also suffer from significant packet losses due to bit errors and hand-offs. TCP Westwood (TCPW) is a recently proposed sender-side modification of TCP congestion control. The main point is to investigate those proposed bandwidth estimate algorithms in TCPW and then propose an enhanced one. We use simulation to validate the performance of the new algorithm.