Harq procedure and frame structure for LTE cells on unlicensed spectrum
US9917676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Oct 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/042
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A user equipment (UE) is configured to perform a Hybrid Automatic Repeat Request (HARQ) in an un-licensed system. The UE includes at least one antenna configured to communicate with a base station. The UE also includes processing circuitry. The processing circuitry is configured to: send and receive data through the at least one antenna, in response to failing to decode a transport block transmitted by a first downlink carrier, transmit a negative acknowledgement message to the base station, and receive a re-transmission of the transport block from a second downlink carrier. The first downlink carrier comprises a unlicensed spectrum carrier and the second downlink carrier is different from the first downlink carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.