<p>In UMTS WCDMA a new RACH-based uplink is being discussed. The request for uplink transmission resource is made using a mechanism based on the conventional RACH. The main difference from the conventional RACH is that the data transmission uses a high-speed uplink packet data channel, known as Enhanced Dedicated Channel (E-DCH), instead of a single short message associated directly with the RACH preamble. One proposed scheme for indicating the E-DCH resources to be used creates a link between the values of each of a group of multiple signatures sent on the AICH (to acknowledge the E-RACH access) and a specific set of E-DCH parameters defined in a table. We propose to signal the set of resources to be used independently from acknowledging the E-RACH access. One possible method is to transmit information in the unused portion of the AICH (corresponding to 1024 chips every slot) indicating the resource set.</p>
申请公布号
WO2009057044(A1)
申请公布日期
2009.05.07
申请号
WO2008IB54446
申请日期
2008.10.28
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;BAKER, MATTHEW, P.J.;MOULSLEY, TIMOTHY, J.