Method for determining a subsequent time interval relationship, for service request messages, from a user equipment

An arrangement in a base station for handling a request from a first user equipment for accessing a service in a radio communications network, the base station arrangement comprising:

• a receiving unit adapted to receive a first wide time interval of an incoming signal, the first wide time interval comprising a first signal sent from the first user equipment and extending for a first narrow time interval, the first narrow time interval of the first signal comprising a first service access request message or preamble thereof;
• a processing unit comprising an analyzing unit adapted to analyze the incoming signal by searching the first wide time interval and to detect that the first signal comprises the first service access request message or preamble thereof;
• and
• the processing unit further comprising an identification unit adapted to identify a relationship between the first narrow time interval and the first wide time interval, for use in analyzing subsequent received intervals of the incoming signal.