Multiple-antenna data transmission method, base station, user equipment, and system
US10236949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2018 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Feb 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0051
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention disclose a base station, including: a first channel state information acquiring module, configured to acquire channel state information of dimension-reduced channel subspace by means of level-one channel state information measurement; a set determining module, configured to: schedule the user equipment, and determine a set of user equipment involved in multiple-input multiple-output; a second channel state information acquiring module, configured to: perform level-two channel state information measurement on user equipment in the set of user equipment to acquire state information of a dimension-reduced real-time channel; and a data sending module, configured to: process downlink data and a user-specific demodulation reference signal by means of two-level precoding, and send processed downlink data and a processed user-specific demodulation reference signal to the user equipment in the set of user equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.