Patent ID: 8320318
Filing Date: 2012-11-27
Classification: H04B,H04L,H04W

Abstract:
1. A method for requesting access to a resource, said 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, wherein the first power ramping scheme comprises transmitting the first access preamble successively with a transmission power increased by a first power step at a first power level, upon failure of correct transmission of the access preamble with the first power ramping scheme, the secondary station transmitting a second access preamble with a second power ramping scheme being different from the first power ramping scheme, and wherein the second power ramping scheme is performed by one of successively transmitting the second access preamble with an increased transmission power using a second power step larger than the first power step or transmitting the second access preamble with a second power level higher than the first power level, dependent upon the type of random access channel (RACH) used to transmit the second access preamble by the secondary station.