Measuring packet transmission delays

Multiplex communications – Wide area network – Packet switching

Patent

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Details

H04J 326, H04L 1256

Patent

active

054286166

ABSTRACT:
A packet transmission system comprising a network of one or more nodes (1) each comprising a number of inputs connected via packet switching means to a number of outputs each of which has storage means (11) associated with it in which to store a queue of packets to be outputted; characterized in that each node (1) is provided with timer means (14) to measure the time each packet spends in a queue of said storage means (11); and stamping means (12) to add to a time stamp field (TS) of each packet before it is outputted from the node, the time the packet has spent in a queue as measured by the timer means (14).

REFERENCES:
patent: 4817085 (1989-03-01), De Prycker
patent: 5127000 (1992-06-01), Henrion
patent: 5148429 (1992-09-01), Kudo et al.

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