In this paper, we propose an extension of TCP Westwood allowing the management of the Efficiency/Friendliness-toNewReno tradeoffs. We show that the extended TCP Westwood is able to achieve higher total link utilization, yet at the same time maintain friendliness. TCP Westwood (for short, TCPW) implements a novel window congestion control algorithm based on eligible rate estimation. The performa...

One way, how to deal with the packet losses for video transmitted over congested network is using connection-oriented, end-toend reliable protocol. In this paper we focused on transmission control protocols, which fulfill the conditions for reliable delivery of information. TCP Tahoe and TCP Reno implementation supported by TCP are part of congestion avoidance mechanisms of the protocol suite. ...

Video communication with quality of service (QoS) is an important and challenging task. To have QoS provision or guarantee at application level in the current best-effort Internet, congestion control and error control are two effective approaches. In this paper, we propose a new network-adaptive rate control scheme for scalable video communication in conjunction with Unequal Loss Protection (UL...

In this paper, a global stability analysis is given for a rate-based congestion control system modeled by a nonlinear delayed differential equation. The model determines the dynamics of a single-source single-link network, with a timevarying capacity of link and a fixed communication delay. We obtain a sufficient delay-independent conditions on system parameters under which global asymptotic st...

Abstract We present an artificial workload model of wide-area internetwork traffic. The model can be used to drive simulation experiments of communication protocols and flow and congestion control experiments. The model is based on analysis of wide-area TCP/IP traffic collected from one industrial and two academic networks. The artificial workload model uses both detailed knowledge and measured...

-The Congestion Control and queue management are important to the robustness and fairness of the Internet and other network application. The Congestion Control is concerned with allocating the network resources such that the network can operate at an optimum fair performance level when the demand exceeds or it is near the capacity of the network resources. The Active Queue Management algorithms...

Cognitive wireless sensor networks (C-WSN) promise a substantial increase in communication performance, provided that an adequate congestion control is designed. In fact, congestion control, which is one of the most important mechanisms in cognitive radio with spectrum sharing, is challenging for C-WSN due to the need of simplicity and efficiency of the mechanism. In this paper, a simple and ef...

We propose a scheme for congestion avoidance in networks using a connectionless protocol at the network layer. The scheme uses feedback from the network to the users of the network. The interesting challenge for the scheme is to use a minimal amount of feedback (one bit in each packet) from the network to adjust the amount of traffic allowed into the network. The servers in the network detect c...

acute venous congestion leads to blood stasis in the tissue and impaired blood perfusion. using medicinal leech is an old method of reducing tissue congestion. there are numerous factors in leech saliva and hirudin that have important roles in the leeching beneficial effect. in this study, an animal study was performed to compare leech therapy with heparin therapy in the treatment of acute veno...