Random access failure in wireless device multiple timing advance groups
US8588169B2 · kind B2 · utility
91Cited by
1References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2013 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Jan 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless device receives a control command to transmit a random access preamble on a first secondary cell. The wireless device repeatedly transmits the random access preamble until a random access response corresponding to the random access preamble is received or a predetermined number of transmissions is reached. If the predetermined number of transmissions is reached without receiving the random access response, the wireless device stops transmission of the random access preamble and keeps a connection with the base station active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.