High-speed asynchronous transfer mode packet switching network system having time slot scheduling unit

摘要

PURPOSE:To reduce an influence caused by a packet, which previously arrives and waits for an outgoing line, and to improve throughput by calculating minimum time for an output to the outgoing line when the packet arrives at a packet buffer. CONSTITUTION:When the packets arrives from incoming lines 101-10n at packet buffers 201-20n, a packet transmission request is outputted through a packet transmission request bus 6 to a time slot schedule device 9. The time slot schedule device 9 notifies the earliest time through a packet transmission time return bus 7 to each packet buffer so that the packet requesting the transmission can be outputted without colliding in the outgoing line. Thus, when the packet is sent out, the arbitration can be executed without fail and the throughput of a space switch 4 can be improved.