Method and device for generating broadcast beams in massive MIMO systems
US11038562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Sep 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0686
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and transmitter for generating broadcast beam patterns in massive MIMO systems, the transmitter comprising a rectangular antenna array with a number N1 of antenna elements in the horizontal direction and a number N2 of antenna elements in the vertical direction. The MIMO transmitter generates broadcast beam patterns with determined beam widths in horizontal and vertical dimensions to cover a sector area of a cell by the rectangular antenna array radiating N1×N2 radiofrequency signals at a carrier frequency, the sector area being where a user equipment requests from the MIMO transmitter access to the cell. The beam widths in horizontal and vertical directions are determined by using an optimum set of complex excitation coefficients calculated from a discretized continuous-space array factor ψ(θ,φ), which is based on a discretization over the elevation angle θ and the azimuth angle φ of the antenna elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.