The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2013
Filed:
Jan. 17, 2007
Sung Lark Kwon, Seoul, KR;
Dong Joo Park, Seongnam-si, KR;
Hyuck Chan Kwon, Seoul, KR;
Young Kwon Ryu, Gwangmyeong-si, KR;
Hoo Young Jeong, Seongnam-si, KR;
Hong Jik Kim, Seoul, KR;
Jung Seung Lee, Uiwang-si, KR;
Jae Won Jang, Seoul, KR;
Byoung Seong Park, Incheon, KR;
Hee Gul Park, Yongin-si, KR;
Sung Lark Kwon, Seoul, KR;
Dong Joo Park, Seongnam-si, KR;
Hyuck Chan Kwon, Seoul, KR;
Young Kwon Ryu, Gwangmyeong-si, KR;
Hoo Young Jeong, Seongnam-si, KR;
Hong Jik Kim, Seoul, KR;
Jung Seung Lee, Uiwang-si, KR;
Jae Won Jang, Seoul, KR;
Byoung Seong Park, Incheon, KR;
Hee Gul Park, Yongin-si, KR;
LG-Ericsson Co., Ltd., Seoul, KR;
Abstract
Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACH signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACH signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.