Many researchers use abstract models to simulate network congestion, finding patterns that might foreshadow onset of congestion collapse. We investigate whether such abstract models yield congestion behaviors sufficiently similar to more realistic models. Beginning with an abstract model, we add elements of realism in various combinations, culminating with a high-fidelity simulation. By compari...

Congestion has been considered as one of the basic important issue in packet switched network [1][9]. Congestion control refers to the mechanisms and techniques to control the congestion and keep the load below the capacity. This paper provides an overview of category provided by congestion control .It also includes how TCP uses congestion control to avoid congestion or alleviate congestion in ...

Current congestion control mechanisms in today’s Internet rely on end-to-end TCP congestion avoidance algorithms that back off sources when congestion occurs, detected by packet loss or explicit congestion notification signals. But one of the major setbacks of such mechanisms is making sure that all sources respond correctly in applying congestion avoidance measures during periods of high conge...

Data Envelopment Analysis (DEA) is a branch of management, concerned with evaluating the performances of homogeneous Decision Making Units (DMUs). The performances of DMUs are affected by the amount of sources that DMUs used. Usually increases in inputs cause increases in outputs. However, there are situations where increase in one or more inputs generate a reduction in one or more outputs. In ...

In today’s restructured environment, congestion management plays an essential role in power system operation. Different methods are presented and discussed in this respect for congestion management in short-term and long-term intervals. It is attempted in the present paper to investigate the impact mechanism of FACTS devices and demand response programs together with generation re-dispatch as s...

In Local Area Networks (LAN) connected together by bridges, flow control and smooth traffic in the network is very important. However, congestion at bridges can cause intensive loss of received frames. In addition, the received frames are thrown away and have to be retransmitted by the source station, which causes more congestion and massive reduction in the overall network throughput. The netw...

The IETF’s standard congestion control schemes have been widely shown to be inadequate for various environments (e.g., high-speed networks). Recent research has yielded many alternate congestion control schemes that significantly differ from the IETF’s congestion control principles. Using these new congestion control schemes in the global Internet has possible ramifications to both the traffic ...

The IETF’s standard congestion control schemes have been widely shown to be inadequate for various environments (e.g., high-speed networks). Recent research has yielded many alternate congestion control schemes that significantly differ from the IETF’s congestion control principles. Using these new congestion control schemes in the global Internet has possible ramifications to both the traffic ...

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...