In one embodiment the present invention comprises transmitting a first broadcast message in a broadcast channel at a first specific time within a first assigned slot of a predetermined frame from a first base station of a radio communications system. The first broadcast message includes a broadcast information sequence. The invention further comprises transmitting a second broadcast message in the broadcast channel at a second specific time within a second assigned slot of the predetermined frame from a second base station of a radio communications system, the second broadcast message including a broadcast information sequence, receiving a message from a user terminal having a timing relationship with the predetermined frame and determining the base station to which the message is directed based on the timing relationship.