Calibration method for cooperative transmission of cell-free wireless network, and apparatus therefor
US11431422B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2021 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Oct 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for calibration, in a serial fronthaul in which a calibration device and L (L is a natural number equal to or greater than 1) access node(s) (AN(s)) are serially connected, may include: transmitting, by the calibration device, to at least part of the L AN(s), a calibration command message indicating calibration of transmission paths; determining, by the calibration device and the at least part of the L AN(s), time delay values and phase characteristic values of the transmission paths of the at least part of the L AN(s); and transmitting, by the calibration device, to the at least part of the L AN(s), a calibration adjustment message indicating calibration of the transmission paths based on the time delay values and the phase characteristic values of the transmission paths of the at least part of the L AN(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.