Cell discard method

Details Cell discard method Cell discard method

H - Electricity

04

L

H04L 12/56 (2006.01) H04L 1/08 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2259722

The present invention relates to a method and related devices to be used for cell discard in a communications-network through which cells arranged in frames are transmitted. This communications-network exists of a first discarding device which is coupled to a second discarding device. This first discarding device can be a traffic policer or alternatively a network buffer. The second discarding device is a network buffer. A cell stream is supplied to the first discarding device. The system determines if the incoming cells are in accordance with the predetermined criteria and discards this cell, if the cell is not in accordance with the criteria. By discarding cells of a frame, this frame is corrupted and marked with a corrupted frame indicator, by the first discarding device. Afterwards the second discarding device may discard the remaining cells of the marked frame. If the first discarding device is a traffic policer, the traffic policer checks the conformance of the incoming cells according to conformance criteria and alternatively if the first discarding device is a network buffer it checks the conformance of the incoming cells according to some congestion determining criteria.

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