Precoding information obtaining apparatus, method, and system
US10142003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2017 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Apr 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0248
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provide a precoding information obtaining apparatus. The apparatus includes: a determining module, configured to determine a transformation quantity according to a steering vector of an antenna form and a departure-angle range; a sending module, configured to send, to a terminal, information about the transformation quantity determined by the determining module, where the information about the transformation quantity is used by the terminal to determine a PMI according to the information about the transformation quantity, a codebook used for obtaining channel information, and a pilot measurement result; and a receiving module, configured to receive the PMI reported by the terminal. A network node sends a transformation quantity containing antenna information to a terminal, and the terminal feeds back a PMI according to the transformation quantity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.