| 摘要 |
A wireless device transmits a random access preamble with an initial transmission power. The wireless device monitors a control channel on a primary cell for a corresponding random access response. The monitoring is performed within a time frame which starts at a first subframe having a duration less than or equal to a primary random access response window regardless of which cell is employed for transmission of the random access preamble. The wireless device retransmits, with an increased transmission power, the random access preamble if no corresponding random access response is received. The increased transmission power depends on a cell specific power ramping step value.
|
