The Slow Start (SS) phase at the beginning of a TCP connection affects the performance of short transfers especially on long delay links such as Satellite Links. Many works have tried to improve the performance of this phase either by accelerating the congestion window increase or by setting the SS threshold at the beginning of the connection to a more accurate value in order to avoid losses an...

This document specifies Non-Congestion Robustness (NCR) for TCP. In the absence of explicit congestion notification from the network, TCP uses loss as an indication of congestion. One of the ways TCP detects loss is using the arrival of three duplicate acknowledgments. However, this heuristic is not always correct, notably in the case when network paths reorder segments (for whatever reason), r...

We believe that the emergence of congestion control mechanisms for relatively-smooth congestion control for unicast and multicast traffic can play a key role in preventing the degradation of end-to-end congestion control in the public Internet, by providing a viable alternative for multimedia flows that would otherwise be tempted to avoid end-to-end congestion control altogether. The design of ...

In this paper, we discuss a cross layer congestion control technique of TCP Reno-2 in wireless networks. In this both TCP layer and PHY layer jointly control congestion. The PHY layer changes transmission power as per the channel condition, interference received and congestion in the network, whereas the TCP layer controls congestion using Reno-2 window based flow control. Our simulations show ...

In this paper, we propose a two-layer model for TCP traffic with burstiness effect. We show that the backlog in bottleneck queue is bounded by the sum of two components: the long term effect of congestion window control algorithm and the short term effect of burstiness. This motivates a formal definition of burstiness. A simple algorithm is proposed to measure and control burstiness at the send...

In Wireless Sensor Networks (WSN's), congestion plays an important role in degrading the performance of the network. Under idle condition, the network load is very low whereas when an event is detected the network load becomes high which leads to congestion. Due to congestion the overall performance of the network degrades. Hence it is necessary to detect and control congestion. In this pa...

-In mobile ADHOC networks have limited bandwidth and are more prone to error than wired networks which further impose limits on the amount of data that can be sent. In order to conserve the limited resources, it is highly desirable that transmission should be as efficient as possible with minimal loss. The objective of congestion control is to limit the delay and buffer overflow caused by netwo...

This document contains the profile for Congestion Control Identifier 2 (CCID 2), TCP-like Congestion Control, in the Datagram Congestion Control Protocol (DCCP). CCID 2 should be used by senders who would like to take advantage of the available bandwidth in an environment with rapidly changing conditions, and who are able to adapt to the abrupt changes in the congestion window typical of TCP’s ...

Here in this paper A MAC layer level congestion detection mechanism has been proposed. The proposed model aims to deliver an energy efficient mechanism to quantify the degree of congestion at victim node with maximal accuracy. This congestion detection mechanism is integrated with a Two-Step Cross Layer Congestion Control Routing Protocol. The proposed model involves controlling of congestion i...

TCP Westwood (TCPW) is a recently proposed sender side modification of TCP congestion control. TCPW relies on bandwidth share estimation techniques to enhance congestion control over high speed and/or wireless networks. The bandwidth share estimation methods turn out to be critical to guarantee both throughput improvement and friendliness towards widely used TCP protocols such as NewReno. In th...