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:
Sep. 04, 2012
Filed:
Apr. 19, 2007
Hyo-seok Yi, Daejeon, KR;
Il-gyu Kim, Seoul, KR;
Young-jo Ko, Daejeon, KR;
Kapseok Chang, Daejeon, KR;
Hyeong-geun Park, Daejeon, KR;
Young-hoon Kim, Daejeon, KR;
Seung-chan Bang, Daejeon, KR;
Hyo-Seok Yi, Daejeon, KR;
Il-Gyu Kim, Seoul, KR;
Young-Jo Ko, Daejeon, KR;
Kapseok Chang, Daejeon, KR;
Hyeong-Geun Park, Daejeon, KR;
Young-Hoon Kim, Daejeon, KR;
Seung-Chan Bang, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Samsung Electronics Co., Ltd, Suwon-Si, KR;
Abstract
A transmission method performed by a mobile station for random access channel (RACH) burst transmission diversity gain is provided. According to the method, a variety of combinations of a time switching transmit diversity (TSTD) technique, a frequency hopping technique, and a power ramping technique that are robust against fading channel environments are applied to transmission of an RACH burst, thereby increasing the probability of detecting an RACH signature of a base station. Also, by using the transmission parameters (subband frequencies, transmission antennas, power, etc.) which are used for successful transmission of an RACH burst, for transmission of a successive user packet data, reliable transmission of the successive user packet data can be performed.