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Congestion prevention technique for ATM networks

ATM networks do not operate in an effective and stable way without preventing congestion. Traffic management is concerned with the design of mechanisms which ensure that the network bandwidth, buffer and resources are efficiently utilized, while meeting the various quality of service (QoS) guarantees given to sources as part of a traffic contract. In this paper, a new and improved congestion control scheme is proposed to support the best-effort ABR traffic, as a result of investigating the most widely recognized congestion control schemes for ABR service. Some of these schemes show either lack of scalability or fairness while other well-behaved schemes may require a highly complex switch algorithm that is unsuitable for implementation in cell-switching high-speed ATM networks. Our algorithm provides the congestion avoidance ability with high throughput and low delay, in addition of achieving the max-min fairness allocation.