Congestion control

Information technology´s growth has led to an obsession to provide better and more communication services than ever before. Computer communication networks are the latest manifestation of this obsession. Computer networks have been playing an increasingly larger role in our day to day activities. However, there is technology available that makes it possible for us to envision simultaneous transmission of voice, video, graphics and text over the same network. Such networks are called broadband integrated services digital networks (B-ISDNs). For a B-ISDN to be successful, certain critical issues such as congestion control, routing and error detection have to be tackled. Congestion is an inherent problem for networks with multiple user access when the load exceeds what can be handled even with optimal routing. Window flow control and rate flow control schemes are discussed