Method for determining weight for beamforming in wireless communication system and apparatus therefor
US10218478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jun 28, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method is provided for determining a weight for hybrid beamforming. A base station signals, to a user equipment, a configuration for repeated transmission of a first omnidirectional beam equally formed in all directions, receives the first omnidirectional beam from the user equipment by forming a second omnidirectional beam, and repeatedly receives the first omnidirectional beam from the user equipment by sequentially forming a plurality of directional beams corresponding to a plurality of directions. The base station determines a weight for hybrid beamforming by obtaining a gain difference between the first omnidirectional beam received through the second omnidirectional beam and the first omnidirectional beam received through a first directional beam among the plurality of directional beams, selecting a precoding matrix indicator (PMI) and acquiring, based on the PMI, a coefficient of a phase shifter and a coefficient of a power amplifier for analog beamforming of the hybrid beamforming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.