Method and apparatus for reciprocity calibration between base stations
US10164720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Mar 18, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0073
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provide a method and an apparatus for reciprocity calibration between base stations, which relate to the communications field, and can improve precision of reciprocity calibration between base stations. The method includes: obtaining, by each base station by means of calculation, a precoding vector corresponding to a selected subcarrier of the base station; sending, by all the base stations to UE by using the selected subcarriers of the base stations, downlink user-dedicated reference signals that are mutually orthogonal between cells corresponding to the base stations; obtaining, by each base station, an inter-base station calibration compensation coefficient of the selected subcarrier of the base station; and adjusting, by each base station, a self-calibration matrix of the selected subcarrier according to the inter-base station calibration compensation coefficient of the selected subcarrier of the base station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.