| 摘要 |
The present invention relates to a method for requesting access to a resource, the method comprising a secondary station transmitting an access preamble to a primary station, upon failure of correct transmission of the access preamble, the secondary station starting a first power ramping scheme for transmitting the access preamble, upon failure of correct transmission of the access preamble with the first power ramping scheme, wherein the second power ramping scheme comprises transmission in at least one access slot different to that used for transmission of the first access preamble. |
| 主权项 |
1. A method of operating a secondary station for requesting access to a resource from a primary station, the method comprising:
in a secondary station:
a processor of the secondary station transmitting via a transmitter and antenna to a primary station an access preamble to request access to a resource,upon an indication of failure of reception by the primary station of the access preamble, the processor of the secondary station starting a first power ramping scheme for transmitting the first access preamble, whereby the first power ramping scheme successively transmits via the transmitter and antenna one or more times the first access preamble with successive transmissions increased in power by a predetermined first power level step,upon an indication of one or more failures of reception of the first access preamble with the first power ramping scheme at the primary station, the processor of the secondary station terminating the first power ramping scheme and starting a second power ramping scheme for transmitting via the transmitter and antenna a second access preamble to request access to the resource from the primary station, the second preamble being different from the first access preamble, wherein the second power ramping scheme comprises transmission in at least one access slot different to that used for transmission of the first access preamble. |
