Patent ID: 8259844
Filing Date: 2012-09-04
Classification: H04J,H04L,H04W

Abstract:
1. A method for a user equipment (UE) to transmit a random access preamble sequence to a base station, the method comprising: transmitting the random access preamble sequence generated from a Constant Amplitude Zero Auto Correlation (CAZAC) sequence to the base station, wherein the CAZAC sequence is cyclic shifted according to one of applicable cyclic shift values defined considering a value (M) representing a Doppler shift of one subcarrier spacing and a cyclic shift unit length (T), and wherein the value (M) meets a condition of ‘P*t≦M<(P+1)*T’ where (P) is an integer, one or more adjacent cyclic shift values among the applicable cyclic shift values are defined as a group and a number of the adjacent cyclic shift values within the group equals to (P).