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Congestion control has become a research focus with the development of network communication technology. Random early detection (RED) for queue management techniques is the most effective method. However, RED is particularly sensitive to the traffic load and the parameters of the scheme itself. When the traffic load is low, the bandwidth is underutilized, whereas when the traffic load is high, the...
Random-early-detection (RED) is widely applied in network nodes for congestion control. It randomly drops packets to prevent congestion from occurring, while keeping high bandwidth utilization at the same time. Unfortunately, RED provides little protection against aggressive flows from consuming most of the bandwidth. BF-RED was introduced in the literature to address the problem, but it calculated...
The need for service resilience is leading to a steadily growing number of multi-homed Internet sites. In consequence, this results in a growing demand for utilising multiple Internet accesses simultaneously, in order to improve application payload throughput during normal operation. Multi-path Transport Layer protocol extensions - like Multi-Path TCP (MPTCP) for TCP and Concurrent Multipath Transfer...
As the traditional TCP which has greatly restricted is no longer able to meet the requirements of the existing data transmittal. so Multipath Transport Protocol is proposed. Focus on the issue of fairness on the bottleneck link in multipath transmission, and analyzes the limitations of the algorithms of EWTCP with equal round-trip time, We investigate a congestion control scheme that addresses this...
Delay-based TCPs detect network congestion in the early stage and successfully prevent periodic packet loss that usually occurs in loss-based TCPs. It has been demonstrated that delay-based algorithms outperform loss-based schemes in many aspects. However, a delay-based TCP may not prevent unnecessary throughput degradation in asymmetric networks and when the congestion occurs in the backward path...
Congestion in Wireless Sensor Networks (WSN) can be a severe problem, as it causes a plethora of malfunctions such as packet loss, lower throughput, energy inefficiency, and short lifetime. As a result, the performance of the whole network is subject to undesirable change; an issue that renders congestion control an issue of uttermost importance for such networks. As far as data-collection applications...
In the standard TCP congestion control mechanism such as TCP Reno, it may cause the issue that packet sending rate increase exponentially in the slow start phase so significantly that it leads to the decline of TCP performance due to the overflow of bottleneck link buffer. One of the ways of TCP modification is based on estimation of the fair share of the available bandwidth for each flow and adjustment...
Researches have shown that self similar traffic has essential effects on the network parameters such as loss rate, length of the queue in the routers and throughput. Since classical congestion control algorithms work in short time scales and do not consider self similarity and long time dependency phenomenon of data, development of congestion control algorithms which be able to distinguish and manage...
TCP-friendly rate control (TFRC) is a congestion control mechanism that can compete fairly with TCP while maintaining a much smoother transmission rate. The smoothness is achieved at the cost of responsiveness, which makes it slow to settle down when handed-over to a different network. In this paper we will study how to improve the TFRC performance when the available bandwidth is changed during a...
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