Reverse timestamp method and network node for clock recovery
US8315262B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2008 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Jan 3, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4302
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of clock recovery of Time Division Multiplex signal in a packet network, wherein a first Provider Edge receives a timing message from a second Provider Edge and upon reception of said timing message a counter of said first Provider Edge is increased. The first Provider Edge sends to the second Provider Edge encapsulated Time Division Multiplex packet traffic and each packet sent to the second Provider Edge causes the counter to decrease. The first Provider Edge compares value of the counter with an Upper Threshold value and with a Low Threshold value and increases a rate of generation of the encapsulation packets if the counter is above said Upper Threshold or reduces the rate of generation of the encapsulation packets if the counter is below said Low Threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.