rate allocation has become a demanding task in data networks as diversity in users and traffics proliferate. most commonly used algorithm in end hosts is tcp. this is a loss based scheme therefore it exhibits oscillatory behavior which reduces network performance. moreover, since the price for all sessions is based on the aggregate throughput, losses that are caused by tcp affect other sessions...

Congestion and admission control are two of the most widely investigated problems which must be faced in ATM. The FBR (Fast Buffer Reservation), i.e. a virtual circuit acceptance algorithm proposed by Turner [Tur 921, based on the excess probability criterion (EPC), seems to be a complete approach for bandwidth management. It will constitute the starting point of the new admission and congestio...

Due to increasing number of wireless services spectrum congestion is a major concern in both military and commercial wireless networks. To support growing demand for omnipresent spectrum usage, Cognitive Radio is a new epitome in wireless communication that can be used to exploit unused part of the spectrum by dynamically adjusting its operating parameters. While cognitive radio technology is a...

In best-effort networks, fairness has been used as a criterion to guide the design of traffic controls. The notion of fairness has evolved over time, from simple equality to a form of equality modulated by the user’s need (e.g. max-min and proportional fairness). However, fairness has always been defined on a per-user basis for a deterministic workload. In this paper, we argue that we must rede...

In recent years, AQM (Active Queue Management) mechanisms, which control the number of packets in the router’s buffer by discarding an arriving packet, have been actively studied. In past studies, most of AQM mechanisms have been designed by taking account of a single router; i.e., few AQM mechanisms have been designed by taking account of multiple routers in the network. In a general network w...

Congestion and overloading for lines are the main problems in the exploitation of power grids. The consequences of these problems in deregulated systems can be mentioned as sudden jumps in prices in some parts of the power system, lead to an increase in market power and reduction of competition in it. FACTS devices are efficient, powerful and economical tools in controlling power flows through ...

In Wireless Sensor Networks (WSN’s), congestion plays an important role in degrading the performance of the network. Under idle condition, the network load is very low whereas when an event is detected the network load becomes high which leads to congestion. Due to congestion the overall performance of the network degrades. Hence it is necessary to detect and control congestion. In this paper a...

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...