Multi-beam codebooks with further optimized overhead
US10484059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2017 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Aug 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/066
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method, wireless device and network node for determining an indication of a precoder are provided. According to one aspect, a method in a wireless device includes determining and the indication of the precoder from a codebook, the indication comprising a first beam phase parameter and a second beam phase parameter corresponding to a first beam and a second beam respectively. The first beam phase parameter takes on one of a first integer number of phase values and the second beam phase parameter takes on one of a second integer number of phase values. At least one of the following conditions apply: the second integer number of phase values is less than the first number of phase values, and the second frequency-granularity is greater than the first frequency-granularity. The method includes transmitting the determined indication of a precoder to the network node. According to another aspect, the second beam has less power than the first beam and the second integer number of phase values is less than the first integer number of phase values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.