Apparatus and method in wireless communications system
US10284279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2016 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Oct 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a wireless communications system, a base station includes a first number of antennas and a smaller second number of radio frequency links. A base station apparatus includes: a rough arrival angle estimation unit, which estimates a rough arrival angle pair by a second number of antennas and a second number of radio frequency links; a candidate arrival angle estimation unit, which determines a candidate arrival angle pair based on a rough arrival angle pair and beam widths determined by a first number and a second number of antennas, respectively; and a precise arrival angle determination unit, which calculates the difference between the projection component and real component for the candidate arrival angle pairs based on a training tone from the user equipment, and designates the candidate arrival angle pair with the smallest difference between those components as the precise arrival angle pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.