Active Congestion Control (ACC) uses Active Networking (AN) technology to make feedback congestion control more responsive to network congestion. Current endto-end feedback congestion control systems detect and relieve congestion only at endpoints. ACC includes programs in each data packet that tell routers how to react to congestion without incurring the round trip delay that reduces feedback’...

Congestion plays a vital role in degrading the performance of the network. Under idle condition, network traffic is less whereas when an event is detected, the network traffic becomes high thus leading to congestion in the network. To ensure the reliability of the network an efficient protocol is proposed to detect and control congestion. Though there are various sources for congestion, the sig...

In Wireless Sensor Networks (WSN) the packet loss occurs due to congestion. The sink node which is called special node collects information from other nodes. There are various congestion control algorithms are currently used. In WSN congestion detection and congestion control are the major research areas. It is important to design protocols for controlling congestion. The congestion control pro...

Transmission Control Protocol (TCP) carries most of the traffic on the Internet these days. There are several implementations of TCP, and the most important difference among them is their mechanism for controlling congestion. One of the methods for determining type of a TCP is active probing. Active probing considers a TCP implementation as a black box, sends different streams of data to the ap...

This paper investigates the effects that different TCP variants have on each other. The TCP variants differ in the congestion control algorithms they employ. The congestion control algorithms determine how much network traffic is generated by TCP at any one time, and aims to prevent a TCP connection from over utilising the network. We investigate the different congestion control algorithms that...

Relentless congestion control is a simple modification to AIMD congestion control: instead of halving cwnd after a loss, cwnd is reduced by the number of lost segments. It can be modeled as a strict implementation of Van Jacobson’s Packet Conservation Principle. Relentless congestion control has exactly unity gain, which is expected to make it much easier for network devices to accurately contr...

The effects of congestion can be seen in Figure 11.1. As shown in the figure, the throughput of a connection increases as the offered load increases until a point when the queues in the system start to fill up and the increase in throughput levels off. When the offered load becomes too large and the buffers are totally filled up, packets begin to get dropped by the system and throughput starts ...

The packet losses imposed by IP networks can cause long and erratic recovery delays, since senders must often use conservative loss detection and retransmission mechanisms. This paper proposes a model to explain and predict loss rates for TCP traffic. Based on that model, the paper describes a new router buffering algorithm, Flow-Proportional Queuing (FPQ), that handles heavy TCP loads without ...