Random access preamble transmission
US8644129B2 · kind B2 · utility
90Cited by
0References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 2013 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | May 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless device receives a control command to transmit a random access preamble on a second carrier. The wireless device repeatedly transmits the random access preamble until a random access response corresponding to the random access preamble is received or a predefined number of transmissions is reached. If the predefined number of transmissions is reached without receiving the random access response, the wireless device keeps an RRC connection with the base station active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.