Channel usage indication and synchronization for LTE operation in unlicensed bands
US10313990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2015 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Oct 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/27
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and instrumentalities are disclosed for LTE operation in an unlicensed spectrum, LTE-U. A wireless transmit/receive unit, WTRU, may establish a connection with a first cell on a licensed frequency band. The WTRU may receive a first downlink transmission from a second cell operating on an unlicensed frequency band. The WTRU may determine that a synchronization signal transmission from a third cell operating on the unlicensed frequency band is transmitted using one or more resource elements. The WTRU may perform frequency and/or timing estimation based on the synchronization signal transmission. The WTRU may perform rate matching around the one or more resource elements that correspond to the synchronization signal transmission. The WTRU may perform rate matching around the one or more resource elements by de-mapping symbols of the downlink transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.