Interference reduction for upstream signals in communication networks
US9729936B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Particular embodiments identify customer premise equipment (CPE) in a subscriber's premises that may potentially cause interference with other devices. For example, the interference may occur within an interfering spectrum where an interfering CPE transmits upstream in a frequency band that is the downstream frequency band for other customer premise equipment, such as legacy CPEs. Once the CPE is identified, when the CPE sends a request to initialize the CPE on the network, a cable modem termination service (CMTS) may adjust the target power level for a transmitter transmitting upstream content within the interfering frequency spectrum. For example, for those CPEs that transmit upstream using upstream channels within an interfering spectrum, such as within 54-85 MHz, the power level for these CPE may be reduced. Other CPEs that are not transmitting upstream in this interfering spectrum may not have their power reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.