Bandwidth assignment control in ATM system

ATM (asynchronous transfer mode) system transfers and switches the information from various media such as voice, data, and video in a unified way. Since media with severe requirements for high-speed transfer or real-time processing must be handled, there is no flow control function during communication. As a result, a certain bandwidth must be assigned to each call to ensure service quality. This paper considers first the case where the same bandwidth is shared by several classes with different service requirements. The ″flexible processing″ system is proposed as a priority processing method where the qualities of other classes are not deteriorated even if there arises an unexpected traffic flow of a particular class.