Quality control at the cell level and its characteristics in the ATM network
Shinya Nogami · Electronics and Communications in Japan (Part I Communications) · 1991
Abstract In the ATM network, information is transmitted by the continuous transmission from node to node of a fixed‐length packet called a “cell.” The requirements of the cell on the traffic characteristics and the network depend on the kind of information source. The information from a video terminal arriving at a node, for example, is bursty, and a severe condition is imposed on the delay. When cells from more than one medium arrive in a mixed way at the network, a certain control mechanism will be needed to satisfy the respective requirements from the cells. On the other hand, this control mechanism should be realized by as simple a structure as possible. This paper discusses the necessity of the quality control at the cell level and the basic concept in the control for the node handling different kinds of calls. First, the characteristics for the case of a single kind of call source (such as voice, video or data) are analyzed. Then the necessity and usefulness of the control methods when various kinds of calls are mixed and arrive at the node are discussed for different control methods using numerical examples.