Digital processing of SONET pointers
US7369578B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2003 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Mar 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/076
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a method of estimating a bit rate (f1) of a digital signal conveyed through a SONET network between an originating node and a terminating node, the digital signal received by the originating node is processed to determine a result of a first function of the signal bit rate (f1) and a respective Tx local reference frequency (f2) of the originating node. A result of a second function of the Tx local reference frequency (f2) and a respective Rx local reference frequency (f3) of the terminating node is calculated. Finally, a result of a third function of the respective first and second function results is calculated, to derive an estimate of the signal bit rate (f4) relative to the Rx local reference frequency (f3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.