Patent ID: 8913696
Filing Date: 2014-12-16
Classification: H04J,H04W

Abstract:
1. A method of facilitating a user equipment (UE) communicating with a base station (BS) via a cell of a mobile communications system, the method comprising: selecting, by the UE, a random access preamble sequence from a set of random access preamble sequences; transmitting, by the UE, the random access preamble sequence to the BS; receiving, by the BS, the random access preamble sequence; and estimating, by the BS, a time of arrival of the random access preamble sequence, wherein the set of random access preamble sequences is included in 64 random access preamble sequences available in the cell, the 64 random access preamble sequences are obtained from at least one Zadoff-Chu sequence, the at least one Zadoff-Chu sequence is used in generation of a sequence x x Zadoff-Chu sequence is defined by: