Method for transmitting an uplink signal, method for receiving an uplink signal, user equipment, and base station
US9118452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Jul 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/002
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method comprising classifying user equipment (UE) cells, to which carrier aggregation is applied, into a plurality of time advance groups. Uplink-time synchronization is managed using the time synchronization of a primary cell (Pcell) in the time synchronization group to which the primary cell belongs. For other time synchronization groups, the uplink time synchronization is managed using the time synchronization of a secondary cell (SCell) that is particularly set in the relevant time synchronization group. Thus, the plurality of time synchronizations can be effectively managed for the UE and a base station (BS).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.