Abstract
Bursty transmission is characteristic of data traffic on networks of all sizes. ATM is well suited to handling this traffic in wide-area networks and is likely to be the technology of choice in interconnecting HFC networks covering metropolitan areas or portions of them. However, the flow control methods differ significantly: ATM flow control, as defined by the ATM Forum, is based on explicit rate feedback, while HFC networks for the most part rely on a request/grant mechanism for reserving quantities of data transmission, rather than rates. This paper examines problems that are likely to arise in interfacing the two types of flow control. It also considers operating an HFC system in conjunction with earlier open-loop ATM designs without feedback. Finally, it examines the use of HFC systems with other alternatives for ATM control, particularly the quantum control proposal.
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