PVC reservation on shared buffer type ATM switch for data communication

This paper describes an ATM switch with a PVC (permanent virtual connection) reservation function, which reserves a PVC identifier when each cells stream arrives at the switch unless the sum of the peak bandwidths of the cell streams exceeds the output link throughput of the switch. Only reserved PVC cell streams can pass through the switch completely without interference from unreserved streams. We have already developed one-board ATM switch forming 128 queues on the 4,000-cell shared buffer for bandwidth control. It is feasible to achieve a PVC reservation by allotting one PVC cell stream to one queue at the switch forming multiple queues for each output port