Modem channel sharing based on frequency division
US7151794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2002 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Nov 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data communication system includes a head-end modem, which is adapted to transmit downstream data signals over a communication medium in a first frequency band and to receive upstream data signals over the communication medium in a second frequency band, each of the first and second frequency bands including multiple frequency bins. At least first and second customer-premises modems are coupled in parallel to the head-end modem via the communication medium so as to receive the downstream data signals transmitted by the head-end modem in the first frequency band, and to transmit the upstream data signals in the second frequency band subject to multiplexing of the second frequency band between the first and second customer-premises modems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.