Systems and methods for estimating skew
US10284414B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 10, 2016 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Nov 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention relates to methods and systems for estimating skew based on, for example, the IEEE 1588 Precision Time Protocol (PTP). These methods and systems can allow the clock skew between a master clock (server) and slave clock (client) exchanging PTP messages over a packet network to be estimated more rapidly than conventional estimation techniques and thereby improve the convergence of standard estimation algorithms. In one embodiment, the skew estimation is derived from a set of timestamps from a message exchange between the master and slave using a non-linear least square-fitting algorithm. An example of the fitting algorithm is the Levenberg-Marquardt algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.