Patent ID: 9450796
Filing Date: 2016-09-20
CPC Classification: H04L,H04W

Claim Text:
1. A method of forming a random access preamble in a cellular system, the method comprising: receiving preamble generation information from a base station; determining a cyclic prefix among a plurality of cyclic prefixes having different lengths based on the preamble generation information, wherein a length of the cyclic prefix is given as a product of a second predetermined length and a second integer, and the second integer is determined by the preamble generation information, wherein the cyclic prefix has a length that ranges from about 202 μs to about 684 μs; determining a preamble sequence part among a plurality of preamble sequence parts having different lengths based on the preamble generation information, wherein a length of the preamble sequence part is given as a product of a first predetermined length and a first integer, wherein the first integer is determined by the preamble generation information, and wherein the preamble sequence part has a length that is selected from among 24576×Ts, 2×24576×Ts, and 3×24576×Ts, and Ts is a sampling time; and generating a random access preamble by combining the determined cyclic prefix and the determined preamble sequence part.