Radio access for a wireless device and base station
US9084270B2 · kind B2 · utility
91Cited by
1References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | May 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/542
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless device receives control message(s) configuring a plurality of cell groups and a time alignment timer for each of the plurality of cell groups. The time alignment timer starts or restarts in response to the wireless device receiving a timing advance command to adjust uplink transmission timing of a commanded cell group. The wireless device receives a control command initiating a random access process for a secondary cell in the secondary cell group. The wireless device aborts the random access process on the secondary cell if a first time alignment timer of the primary cell group expires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.