A refinement to improve TCP Veno performance under bursty congestion

In hybrid wireless/wired network, TCP suffers severe performance degradation due to the lack of inference of packet loss. TCP Veno is a novel refinement that is able to diagnose the different causes of packet loss. Based on the diagnosis, TCP Veno takes the necessary control actions, rather than "blind" reduction of throughput without any discrimination. It has been demonstrated that, in this way, TCP Veno achieves better performance than TCP Reno in wireless/wired environment. However, various uncertainties of network may impact the accuracy of TCP Veno\´s packet loss identification. In this paper, we consider the problem of bursty congestion, as the cause of packet loss is misdiagnosed. To solve this problem in TCP Veno, we proposed a refined packet loss distinguishing scheme. The new TCP Veno is called TCP Veno+. The experimental results show that in environment with bursty congestion, TCP Veno+ can achieve much more accurate congestion loss identification as well as better friendlessness to TCP Reno