A discussion of the causes and impacts of recurring and non-recurring congestion accompanied with a review of potential solutions and existing examples. While congestion is a broad and subjective matter, research focused on the separate causes of recurring congestion – mainly capacity and behavioral issues – and non-recurring congestion – mainly incidents which cause unexpected congestion and t...

The Internet includes various ranges of applications such as multimedia, voice and data but it endures rigorous network congestion. Further, congestion detection is an essential preventive measure must be taken to provide congestion-free Internet. To stipulate proficient technique for congestion detection, in this paper, we propose a load aware congestion detection technique in the Internet. To...

Several congestion pricing proposals have been made in the last decade. Usually, however, those proposals studied optimal strategies and did not focus on implementation issues. Our main contribution in this paper is to address implementation issues for congestion-sensitive pricing over a single domain of the differentiated-services (diff-serv) architecture of the Internet. We propose a new cong...

Congestion control is a critical issue in internet environment because of its complex characteristics. Network congestion control can be characterized by several criteria like causes of congestion, type of congestion symptoms, congestion control location and objectives while congestion control. Thus, network congestion control can be treated as multi criteria decision-making problem. Analytical...

In recent years, various non-linear phenomena of the Internet have been discovered. For instance, it is reported that congestion of a router propagates to neighboring routers like a wave. Several researches on congestion propagation among routers have been performed. However, in these researches, cause of congestion propagation and condition that congestion propagation occurs have not been suff...

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...