We compare the efficiency of the flow control of two versions of TCP, the transmission control protocol of the Internet: the current version called Reno, and a recently proposed version called Vegas. By means of a fluid approximation, we show that due to the use of round-trip times measurement, the window dynamics of TCP Vegas are much more stable than those of TCP Reno, resulting in a much mor...

Recent advances in cognitive radio technology have drawn immense attention to higher layer protocols above medium access control, such as transmission control protocol (TCP). Most proposals to improve the TCP performance in cognitive radio (CR) networks have assumed that either all nodes are in CR networks or the TCP sender side is in CR links. In those proposals, lower layer information such a...

Concerns over the scalability of TCP’s end-to-end approach to congestion control and its AIMD congestion adaptation have led to proposals for router-based congestion control, specifically, active queue management (AQM). In this paper we present an end-to-end alternative to AQM—a new congestion detection and reaction mechanism for TCP based on measurements of one-way transit times of TCP segment...

Objective(s): Dopamine plays an important role in cognitive functions. Inhibition of the dopamine-degrading enzyme catechol-O-methyltransferase (COMT) may have beneficial effects. Our aim was to assess the effect of COMT inhibitor tolcapone (TCP) on learning and memory in naïve and haloperidol-challenged rats.Materials and Methods: Male ...

In the vast majority of mobile applications, Transmission Control Protocol (TCP) is still leveraged at transport layer Internet’s protocol stack. But, in many cases, performance TCP over networks has been proven sub-optimal practice, thus causing substantial bottlenecks. Quick UDP Internet Connections (QUIC) a new protocol, currently being standardized by Engineering Task Force (IETF), that aim...

UDP, can be used in attacks that capture unfairly large share of bandwidth compared to TCP flows. While earlier studies may have pointed out that short-lived TCP flows (mice) may hurt long-lived TCP flows (elephants) on the long term, no insight was given as to developing scenarios leading to drastic drop in throughputs of long-lived TCP flows. We have systematically developed TCP attack scenar...

Standard TCP misinterpret mobility loss in Ad hoc network as congestion loss, thus, it reduce the TCP performance by invoking unnecessary congestion control action. In this paper, we propose two approaches, simELFN (an variation of TCP-ELFN) and TCP-FSR (an variation of TCP-F). They can distinguish the essence of packet loss and avoid multiple consecutive dupACKs. Analyses and simulations show ...