Multi-carrier frequency-division multiplexing (FDM) architecture for high speed digital service
US7336680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | May 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator. Furthermore, the architecture may be integrated into other higher level devices such as, but not limited to, bridges, switches, routers, and/or gateways. The architecture generally may peacefully coexist with other services commonly-found in cable distribution networks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.