User equipment, base station, and uplink transmission timing control method
US11234257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2017 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | May 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0838
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
User equipment for communicating with a base station using a secondary cell includes a transmitter that transmits, to the base station, a preamble to start a random access in the secondary cell; a receiver that receives, within a predetermined search space, scheduling information of a random access response to be transmitted, in response to the preamble, from the base station or another base station of a timing advance group including the base station, and that receives a random access response including uplink transmission timing information based on the scheduling information; and a transmission timing controller that controls uplink transmission timing based on the uplink transmission timing information included in the random access response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.