Techniques for non-zero-power beams in wireless systems
US11432176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Aug 10, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0048
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Some wireless communication networks may improve communication reliability and/or throughput using multiple-input, multiple-output (MIMO) schemes. MIMO operation may in turn be supported by the use of channel state information reference signals (CSI-RS), which may allow communicating devices to estimate and leverage multipath channel conditions. However, the signaling used to support such communications may consume significant resources. In accordance with the described techniques, a user equipment (UE) may identify non-zero-power beams based on received CSI-RS. The non-zero-power beams may contribute to the final precoding vector. Rather than transmitting beam coefficients relating to zero-power beams, the UE may instead indicate a presence of these zero-power beams to the base station (e.g., by indicating a number of non-zero-power beams). Such techniques may reduce overhead of the communications or otherwise benefit the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.