Patent ID: 9131474
Filing Date: 2015-09-08
Classification: H04J,H04L,H04W

Abstract:
1. A method for performing a random access procedure at a mobile terminal in a wireless communication system, the method comprising: receiving first information including a root sequence index and a cyclic shift parameter, wherein the root sequence index and the cyclic shift parameter are used to identify available preambles in a cell, the available preambles including contiguous non-dedicated preambles and contiguous dedicated preambles; receiving second information about a number of the contiguous non-dedicated preambles among a total number of the available preambles; and transmitting a non-dedicated preamble or a dedicated preamble for the random access procedure, wherein the transmitted non-dedicated preamble is randomly selected by the mobile terminal from the contiguous non-dedicated preambles, and wherein the transmitted dedicated preamble is indicated from the contiguous dedicated preambles by an identifier received from a base station.