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AssigneesAmerican Telephone and Telegraph Company, AT&T Bell Laboratories
InventorsHarry W. Adelmann, James D. Tomcik
Estimating the term…
Delay that a packet experiences in a network node is measured by employing a single local time signal in the node, and by separating a time stamp update function into a network node entry stamp function and a network node exit time stamp function. The node entry time stamp function is to generate a packet originate time value referenced to the local time signal value upon the packet entering the node. This packet originate time value is inserted into a packet header time stamp field to be transported through the node. The node exit time stamp function is to generate an updated time stamp value from the packet originate time value from the header time stamp field and the local time signal value upon the packet exiting the node. The undated time stamp value is inserted into the packet header time stamp field in place of the packet originate time value.
Apparatus for measuring packet delay in a network node, the packet including a header having a time stamp field, the apparatus comprising,
Apparatus for measuring packet delay in a network node, the packet including a header having a time stamp field, the apparatus comprising,
A method for measuring packet delay in a network node, the packet including a header having a time stamp field, comprising the steps of,
In a system including a plurality of network nodes, apparatus for measuring packet delay in the network nodes, the packet including a header having a time stamp field, comprising in each of said network nodes,
Dependencies are inferred from the claim text.