METHOD AN APPARATUS FOR MANAGING A COLLISION IN COMMON E-DCH TRANSMISSIONS

摘要

A METHOD AND APPARATUS FOR MANAGING A COLLISION IN RANDOM ACCESS CHANNEL RACH ACCESS TRANSMISSIONS ARE DISCLOSED. A WIRELESS TRANSMIT/RECEIVE UNIT, WTRU TRANSMITS WTRU -DEPENDENT INFORMATION (106) TO CONFIRM THAT A DETECTED ACQUISITION INDICATOR, AI (104) IS INTENDED TO THE WTRU. THE WTRU-DEPENDENT INFORMATION (106) MAY BE TRANSMITTED SEPARATELY AFTER DETECTING THE AI (104), MAY BE TRANSMITTED ALONG WITH A RACH PREAMBLE (102), OR MAY BE SENT IN AN E-RACH MESSAGE (110). THE WTRU-DEPENDENT INFORMATION (106) MAY BE A RANDOM NUMBER, A SEQUENCE OR SCRAMBLING CODE RANDOMLY SELECTED FROM A PRE- DETERMINED SET OF SEQUENCES OR SCRAMBLING CODES. ALTERNATIVELY, THE WTRU-DEPENDENT INFORMATION (106) MAY BE A PRE -CONFIGURED IDENTIFIER, OR INFORMATION DERIVED FROM THE PRE -CONFIGURED IDENTIFIER. ALTERNATIVELY, AFTER DETECTING AN AI (104), THE WTRU MAY RANDOMLY SELECT AN ENHANCED DEDICATED CHANNEL, E-DCH RESOURCE FROM A SET OF E-DCH RESOURCES ASSOCIATED WITH AN RACH RESOURCE USED FOR TRANSMISSION OF THE RACH PREAMBLE (102) AND TRANSMIT AN E-RACH MESSAGE (110) USING THE SELECTED E-DCH RESOURCE. THE MOST ILLUSTRATIVE DRAWING IS FIG. 1.