TECHNIQUE FOR TIME DIVISION MULTIPLEX FORWARDING OF DATA STREAMS

摘要

A technique for time division multiplex (TDM) forwarding of data streams. The system uses a common switch fabric resource for TDM and packet switching. In operation, large packets or data streams are divided into smaller portions upon entering a switch. Each portion is assigned a high priority for transmission and a tracking header (212) for tracking it through the switch. Prior to exiting the switch, the portions are reassembled into the data stream (218). Thus, the smaller portions are passed using a "store-and-forward" technique. Because the portions are each assigned a high priority, the data stream is effectively "cut-through" the switch. That is, the switch may still be receiving later portions of the stream while the switch is forwarding earlier portions of the stream. This technique of providing "cut-through" using a store-and forward switch mechanism reduces transmission delay and buffer over-runs that otherwise would occur in transmitting large packets or data streams.