Methods to achieve accurate time stamp in IEEE 1588 for system with FEC encoder
US9300421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Feb 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0667
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods and systems are disclosed for allowing the medium access control (MAC) layer in a communication system within an integrated circuit or device to accurately determine a timestamp point and a timestamp value when, for example, the Precision Time Protocol (PTP) protocol is in use by the communication system. Such determination of accurate timestamp point and timestamp value may be used by the communication system to account for and to compensate for the time shift(s) from forward error correction (FEC) sublayer changes in a data frame that is transmitted by the MAC layer. Feedback is provided to the MAC from the FEC to allow the MAC to accurately determine the timestamp point and timestamp value align preamble of the data frame to the beginning of the FEC bit block that is output by the FEC sublayer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.