Physical layer channel synchronization method for high bit-rate cable transmissions
US8781052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Jul 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method are described to provide a next generation cable gateway/modem based on the DOCSIS standard with a scheme to synchronously combine channels in the physical layer to increase overall bit rates for coaxial cable data transmission. The systems and methods synchronize the counters associated with multiple channels, including continuity counters, at the transmitter to zero and then allow the counters on individual channels to increment individually. At the receiver, individual channel delays of individual channels will be thus recognizable based on the information provided by the counters associated with each channel. A buffer at the receiver is informed and used to individually delay one or more of the multiple channels to marry up continuity counter values. In this manner, the buffer acts to essentially equalize delays in individual channels with the continuity counter representing the mechanism for specifying the individual delays for the separate channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.