Patent ID: 6917602

Claim:
Method for establishing a connection between a receiving NODE B station and a transmitting User Equipment (UE) station using random access channel (RACH) capture comprising the steps of: transmitting a plurality of successively increasing power level time-spaced access preambles; generating an acquisition indication (AI) signal at node B in response to receipt of one of said plurality of time-spaced access preambles; returning said AI signal generated at node B to the user equipment (UE); terminating transmission at the UE of said plurality of time-spaced access preambles in response to said NODE B returned AI signal; embedding a collision detection preamble (CDP) with the RACH message; transmitting said CDP embedded RACH message after receiving said AI signal; generating a collision detection indication (CDI) signal matching the CDP of a UE, whose RACH message was not correctly decoded at the receiving node B, and requesting retransmission of the RACH message in response to receiving at the UE said CDI signal generated at the receiving node B when decoding of the RACH message at node B has failed.