Uplink operation for LTE in an unlicensed band
US10171276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2016 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jan 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and instrumentalities are disclosed for Uplink operation in LTE unlicensed spectrum (LTE-U). A wireless transmit/receive unit (WTRU) may receive licensed assisted access (LAA) configuration information, e.g., for a first cell from a second cell. The first cell may be associated with operation in an unlicensed band, and the second cell may be associated with operation in a licensed band. The WTRU may determine whether a first subframe subframe is a sounding reference signal (SRS) subframe for the first cell. If the first subframe is an SRS subframe for the first cell, the WTRU may determine SRS resources for the first subframe and determine whether the WTRU is triggered to transmit an SRS transmission in the first subframe. If it is determined the WTRU is triggered to transmit the SRS transmission in the first subframe, the WTRU may transmit the SRS transmission on the SRS resources for the first subframe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.