Method for measuring interference to CM, apparatus, and system
US10461806B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2019 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Feb 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/203
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides, for example, methods for measuring interference to a cable modem (CM), and corresponding example apparatuses and systems. One example method includes sending, by a cable modem termination system (CMTS), a broadcast message to all CMs connected to the CMTS, where the broadcast message includes information designating one of the CMs to send a probing signal by using a spectrum S in a timeslot T. The CMTS can then broadcast a pseudo random binary sequence (PRBS) by using the spectrum S in a downlink direction in the timeslot T, and can obtaining modulation error ratio (MER) information recorded in the timeslot T by other CMs. A difference between MER information in the timeslot T and MER information in a normal data timeslot can be used, for each of the other CMs, as intensity of interference to the corresponding CM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.