Patent ID: 7519086
Filing Date: 2009-04-14
Classification: G01R,H04L

Abstract:
1. A method of measuring jitter caused by a system under measurement (SUM), the method comprising: sending a first data packet through the SUM from a sender side to a receiver side; determining a sender side time difference, wherein the sender side time difference is a time difference between the first data packet and a second data packet consecutive thereto in a data packet flow as observed on the sender side of the SUM; writing multiple copies of the sender side time difference into a payload of the second data packet at multiple offsets; sending the second data packet through the SUM from the sender side to the receiver side; determining a receiver side time difference, wherein the receiver side time difference is a time difference between the first data packet and the second data packet as observed on the receiver side of the SUM; extracting one of the multiple copies of the sender side time difference from the payload of the second data packet; and determining the jitter on the receiver side of the SUM based on the sender side time difference extracted from the payload of the second data packet and the receiver side time difference.