Patent ID: 9433019
Filing Date: 2016-08-30
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A method for transmitting a random access preamble by a terminal in a wireless communication system employing time division duplex (TDD), the method comprising: receiving configuration information from a base station; identifying a plurality of random access channel (RACH) resources in an uplink pilot time slot (UpPTS) based on the configuration information; selecting a RACH resource among the identified plurality of RACH resources; generating a random access preamble; transmitting the random access preamble using a first RACH resource of the plurality of RACH resources if the terminal transmits the random access preamble in a first time; and transmitting the random access preamble using a second RACH resource of the plurality of RACH resources if the terminal transmits the random access preamble in a second time, wherein the first RACH resource and the second RACH resource are configured to different positions in the UpPTS, and wherein the first RACH resource and the second RACH resource are determined based on RACH resource frequency index.