Sc―fdma 시스템 내에서 랜덤 액세스 채널에 주파수대역을 할당하는 방법, 랜덤 액세스 채널 상에서의 신호송수신 방법, 및 신호검출 장치

Method of allocating a frequency band to a random access channel and transmitting/receiving signals via the random access channel in an sc-fdma system, and signal detecting device

Abstract

A method for allocating a frequency band to an RACH(Random Access CHannel) in an SC-FDMA(Single Carrier-Frequency Division Multiple Access) system, a method for transmitting and receiving signals on the RACH, and an apparatus for detecting signals are provided to present a code sequence to enhance a cross correlation characteristic and a PAPR(Peak-to-Average Power Ratio) characteristic using preamble information on an RACH and to optimize frequency bands and time domains according to flexible delay time. In an SC-FDMA system, which comprises a plurality of mobile stations and at least one base station to establish wireless communication with the mobile stations, the first mobile station transmits the first signal through the first RACH. The second mobile station transmits the second signal through the second RACH. The base station, receiving the first and second signals, allocates frequency bands, which are adjacent to each other, to the first and second RACHs respectively. The first and second signals, transmitted from the first and second mobile stations, respectively comprise preamble codes and messages.
SC-FDMA 시스템에서 이동국으로부터 기지국으로의 업링크를 설정하기 위하여 랜덤 액세스 채널이 이용된다. SC-FDMA 시스템은 다수의 이동국 및 다수의 이동국 각각과의 무선 통신을 설정하기 위한 적어도 하나의 기지국을 포함하고, 선정된 범위의 주파수 대역 내에서 동작 가능하다. 기지국은 랜덤 액세스 채널을 통하여 이동국으로부터 프리앰블 및 메시지를 수신한다. 본 발명의 일 실시예에 따르면, 제1 이동국 및 제2 이동국 각각은 기지국에 제1 랜덤 액세스 채널과 제2 랜덤 액세스 채널을 통하여 신호를 송신하는데, 제1 및 제2 랜덤 액세스 채널에는 서로 인접한 주파수 대역들이 할당된다. 본 발명의 다른 실시예에 따르면, 랜덤 액세스 채널 프리앰블은 CAZAC 계열의 코드 시퀀스로 이루어진다.

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Cited By (11)

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    KR-100891758-B1February 27, 2009엘지노텔 주식회사무선 통신 시스템의 기지국 수신기에서의 프리엠블 검출장치 및 방법
    KR-100942289-B1February 16, 2010삼성전자주식회사단일 캐리어 주파수 분할 다중 접속 시스템에서의 자원 할당 방법 및 장치
    KR-101346436-B1January 07, 2014에릭슨 엘지 주식회사Apparatus and method of estimating channel using adaptive channel estimation window in wireless communication based on CAZAC sequence
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