Method and facility for temporarily storing data packets,...

Details Method and facility for temporarily storing data packets,... Method and facility for temporarily storing data packets,...

H - Electricity

04

L

H04L 12/56 (2006.01) H04J 3/24 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2130369

Abstract Method and Facility for Temporarily Storing Data Packets, and Exchange with such a Facility Prior Art: Data packets (D4 - D8) are temporarily stored in two or more logic queues (QU1, QU2) to which the locations of a shared buffer memory (MEM) are dynamically allo- cated. Technical Problem: In overload situations, the loss proba- bility for data packets (D4 - D8) is approximately equal in all queues (QU1, QU2). The loss probability cannot be graduated. Basic Idea: The unavoidable loss of data packets is systemized by selective rejection of data packets. Solution: A data packet (D6 - D8) stored in a low- priority queue (QU2) is deleted if an in- coming data packet (D1) is assigned to a higher-priority queue (QU1) and if the over- all length of the queues has exceeded a predetermined value. Advantages: - Buffer with different, adjustable accep- tance or service methods is easy to implement. - Fast solution, suitable for ATM. Figure: 1

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