Method and apparatus for generating ranging preamble code in wireless communication system,申请号US201012909776-传众专利搜索

Method and apparatus for generating ranging preamble code in wireless communication system

申请公布号：US9019811(B2)

申请号：US201012909776

申请日期：2010.10.21

申请公布日期：2015.04.28

申请人：

LG Electronics Inc.

发明人：Lee Hyun Woo;Cho Han Gyu;Kwak Jin Sam;Kwon Yeong Hyeon

分类号：H04J11/00;H04L27/26

主分类号：H04J11/00

代理机构：

Lee, Hong, Degerman, Kang & Waimey

代理人：Lee, Hong, Degerman, Kang & Waimey

地址：Seoul KR

摘要：A method and apparatus of generating a ranging preamble code in a wireless communication system comprises generating a Zadoff-Chu (ZC) sequence in which a cyclic shift is applied to each of a plurality of orthogonal frequency division multiple access (OFDMA) symbols as a ranging preamble code, wherein the cyclic shift is applied for each OFDMA symbol.

主权项：1. A method of generating a ranging preamble code in a wireless communication system, the method comprising: determining by a hardware processor a cyclic shift using a cyclic shift unit in a time domain, the cyclic shift unit determined using a Fast Fourier Transform (FFT) size that is 512, 1024 or 2048 based on a bandwidth; generating a Zadoff-Chu (ZC) sequence in which the cyclic shift is applied for each of a plurality of Orthogonal Frequency Division Multiple Access (OFDMA) symbols as a ranging preamble code; and using the ranging preamble code for periodic ranging via a synchronized ranging channel (S-RCH), wherein the cyclic shift is determined by:exp⁡(-j·π·2·k·sp·NTCSNFFT),⁢k=0,1,…⁢,NRP-1, where: sp is a cyclic shift index, NTCS is the cyclic shift unit per OFDMA symbol in the time domain, NFFT is a fast Fourier transform (FFT) size, and NRP is a length of the ranging preamble code per OFDMA symbol.