Patent ID: 9113484
Filing Date: 2015-08-18
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A wireless transmit/receive unit (WTRU) for accessing a wireless communication system, the WTRU comprising: a receiver configured to receive random access channel (RACH) assignment information indicating sub-carriers to be used for a RACH transmission; a transmitter configured to transmit a first constant amplitude zero autocorrelation (CAZAC) sequence with a selected phase and a cyclic prefix over a RACH to a NodeB; the receiver further configured to receive an indication over a shared channel that the selected phase of the first CAZAC sequence was received at the NodeB, wherein the indication includes a timing advance (TA); and the transmitter further configured to transmit a signal to the NodeB using adaptive modulation and coding, the signal including control data and reference symbols with a transmission timing adjusted based on the received TA from the NodeB, wherein the reference symbols are derived from a second CAZAC sequence.