This paper describes six methods for controlling congestion for TCP connections. The first four, Slow Start algorithm [5], Tri-S [8], DUAL [7], and TCP Vegas [1] treat the network as a black box, in that the only way to detect congestion is through packet loss and changes in round trip time, or throughput. The last two, Random Early Detection [4] and Explicit Congestion Notification [3] depend ...

Wireless networks have long suffered from congestion. It occurs when source node transmits the data at a rate greater than that of a network device can accommodate. It causes the buffer on such devices to fill up and possibly overflow. It results in loss of packets. Most of the Routing protocols which are currently in use are not congestion Adaptive. Existing congestion control schemes treat co...

Congestion roads can cause many unwelcome results like making people late to work; deliveries do not arrive on time and more. One way to tackle this annoyance is letting the driver know which roads are congested, so they will be able not to go through them. This paper suggests a fast computerized method of concluding which roads are congested and which ones are vacant by automatic analyzing of ...

Many systems in ATM environments require the queue to be monitored for impending congestion before it happens. In this paper, we characterize impending congestion by measuring how long the queue length has exceeded a certain threshold. We present a new performance measure called the conditional overrow probability which gives a quantitative measure on the congestion state. We develop a matrix a...

Congestion is an important issue which researchers focus on in the Transmission Control Protocol (TCP) network environment. To keep the stability of the whole network, congestion control algorithms have been extensively studied. Queue management method employed by the routers is one of the important issues in the congestion control study. Active queue management (AQM) has been proposed as a rou...

Congestion is one of the major problems in today’s internet. So for managing traffic and to keep the network stable, Congestion Control algorithms are used. Queuing is one of the important method in traffic management system. This paper gives a comparative analysis of three queuing mechanisms Droptail, Random Early Detection and Non Linear Random Early Detection on the basis of various performa...

This work presents a thorough study of TCP like window based congestion control. These schemes are basically different from memory less AIMD and binomial schemes. As like this, a small step allows a much broader exploration of friendliness for TCP congestion controls than memory less AIMD and binomial schemes. We propose An Array of window based congestion controls possessing higher smoothness ...

In a wired network, most packet losses are due to congestion. TCP exploits this characteristic of wired networks and is tuned to perform well in such an environment. But in a wireless environment, losses due to errors over the wireless hop also contribute signiicantly to the cumulative packet losses. If TCP is used ov er a wireless link, then its performance is severely degraded. In this paper,...

This paper addresses the problematic of congestion control in the radio access interface when considering the allocation of voice and data services over several Radio Access Technologies (RATs). In particular, the GSMIEDGE Radio Access Network (GERAN) and the UMTS Terrestrial Radio Access Network (UTRAN) are considered for the evaluation of congestion control strategies. After a congestion situ...