Labeling Asymmetric Cables For Improved Network Clock Synchronization
OwnerLee A. Barford, Bruce Hamilton +1inventors
InventorsLee A. Barford, Bruce Hamilton, Dietrich Werner Vook
Life of this patent
Estimating the term…
Abstract
Labeling asymmetric network cables for improved network clock synchronization. Time asymmetries between pairs in a network cable are identified and associated with individual cables. This time asymmetry information is used to improve clock synchronization according to the IEEE-1588 standard. The time asymmetry information may be stored in a database and associated with a serial number on the cable, or may be associated with the cable in human and/or machine readable form.
Claims31
A method of identifying cable asymmetries comprising:
- measuring the propagation time for a first portion of an individual cable to get a first propagation measurement,
- measuring the propagation time for a second portion of the individual cable, which is different from the first portion, to get a second propagation measurement,
- using the first propagation measurement and the second propagation measurement to form propagation data, and
- associating the propagation data with the individual cable.
A method of identifying cable asymmetries comprising:
- measuring the propagation time in two directions on an individual cable to get propagation data, and
- associating the propagation data with the individual cable;
- where the step of associating the propagation data with the individual cable further comprises:
- associating a serial number with the individual cable, and
- storing the serial number of the individual cable and the propagation data in a computer database.
(canceled)
A method of identifying cable asymmetries comprising:
- measuring the propagation time in two directions on an individual cable to get propagation data, and
- associating the propagation data with the individual cable:
- where the step of associating the propagation data with the individual cable further comprises:
- tagging the individual cable with the propagation data.
(canceled)
Dependencies are inferred from the claim text.