Channel state information measurements for license-assisted access
US10063304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2015 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Nov 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/15
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Systems and methods relating to accurate Channel State Information (CSI) measurements for a License Assisted Secondary Cell (LA SCell) are disclosed herein. In some embodiments, a wireless device enabled to operate in a cellular communications network according to a carrier aggregation scheme using both a licensed frequency band and an unlicensed frequency band operates to determine whether a Channel State Information Reference Symbol (CSI-RS) transmission from a LA SCell of the wireless device is present in a subframe, where the LA SCell is in an unlicensed frequency band. The wireless device further operates to process a CSI-RS measurement for the LA SCell for the subframe upon determining that a CSI-RS transmission from the LA SCell is present in the subframe and refrain from processing a CSI-RS measurement for the LA SCell for the subframe upon determining that a CSI-RS transmission from the LA SCell is not present in the subframe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.