International Association of Engineering and Management Education (IAEME)
Contention between several packets trying to use the same link/channel in a network is the major cause for congestion. When congestion appears, the network will come to a state where a node or link carries so much data that it may deteriorate network service quality; resulting in queuing delay, frame or data packets loss and the blocking of new connections. Congestion management and control in network is a serious problem. Most of the congestion management mechanisms try to adjust packet injection rate at the source, in response to the explicit congestion notifications.