Patent ID: 8670466
Filing Date: 2014-03-11
Classification: H04J,H04L

Abstract:
1. In a network communications local device, a method for residence time calculations, the method comprising: recording an arrival time of a first packet with respect to a local reference clock; tracking adjustments in the local reference clock comprising comparing a first sample identification (ID) number associated with the first packet to a second sample ID number associated with a second packet based at least in part by maintaining a counter and incrementing the counter in response to accepting the first packet associated with the first sample ID number; recording a departure time of the first packet with respect to the local reference clock and decrementing the counter in response to recording the departure time of the first packet associated with the first sample ID number; and, adding a residence time field to the first packet representing a difference between the arrival time and the departure time based at least in part on the adjustments in the local reference clock.