Packet switch trunk circuit queueing arrangement
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United States of America Patent
Stats
-
Feb 17, 1987
Grant Date -
N/A
app pub date -
May 6, 1985
filing date -
May 6, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trunk circuit interfaces a multichannel data signal to a communication facility using a high priority queue (HPQ) memory, a low priority queue (LPQ) memory, and a data packet sorter including a separate LPQ counter for each data channel. Each LPQ channel counter keeps track of data packets from the associated channel which are stored in the LPQ memory. The packet sorter sorts data packets according to size. Small data packets from each channel which are smaller than a predetermined length are sorted for storage in the HPQ memory only when the associated LPQ channel counter is zero. Small data packets having a non-zero LPQ channel count and large data packets are stored in the LPQ memory. The trunk circuit first transmits data packets from the HPQ memory and then from the LPQ memory.
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