METHOD FOR FAST ACKNOWLEDGEMENT AND IDENTIFICATION OF A SERVICE ACCESS REQUEST MESSAGE OR A PREAMBLE THEREOF

摘要

A method is provided in a base station for handling a request from a firs t user equipment for accessing a service in a radio communications network. The method comprises the steps of receiving a first time interval of an inco ming signal comprises a first signal sent from the first user equipment and a second signal sent from the second user equipment, interpreting the first signal as being a possible service access request message preamble, and send ing an acknowledgement, that the preamble is detected, to the first user equ ipment. The method comprises the further steps of delaying the first time in terval of the incoming signal, identifying the second signal in the first ti me interval of the incoming signal during the delay, washing the identified second signal away from the first time interval of the incoming signal durin g the delay, and deciding whether the possible preamble is a real preamble o r not, by analysing the washed incoming signal.