Methods, systems, and computer readable media for transmit timestamp autocalibration
US10686581B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2018 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Feb 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/323
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for transmit timestamp autocalibration includes generating a calibration pulse for calibrating a transmit timestamp in a transmitting device. The method further includes applying the calibration pulse to a transmit data pipeline in the transmitting device. The method further includes sampling a transmit timestamp when the calibration pulse reaches a timestamp sample triggering location in the transmit data pipeline upstream from an egress point of the transmitting device. The method further includes measuring a latency between a time that the calibration pulse reaches the timestamp sample triggering location and a time that the calibration pulse reaches a location downstream from the timestamp sample triggering location. The method further includes generating an adjusted timestamp based on the measured latency and inserting the adjusted timestamp into a data packet to be transmitted from the transmitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.