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:
Apr. 29, 2008
Filed:
Jul. 02, 2003
Hung-kee Kim, Seoul, KR;
Yong-suk Lee, Yongin-shi, KR;
Sung-jin Kim, Suwon-shi, KR;
Kang-min Lee, Songnam-shi, KR;
Yong-suk Moon, Songnam-shi, KR;
Noh-sun Kim, Suwon-shi, KR;
Hung-Kee Kim, Seoul, KR;
Yong-Suk Lee, Yongin-shi, KR;
Sung-Jin Kim, Suwon-shi, KR;
Kang-Min Lee, Songnam-shi, KR;
Yong-Suk Moon, Songnam-shi, KR;
Noh-Sun Kim, Suwon-shi, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
Apparatus and method are disclosed for selecting a transmit antenna diversity scheme according to a variation speed of a fading channel in a mobile communication system. A user equipment (UE) estimates a channel response of a pilot channel by receiving a pilot channel signal from a Node B; estimates a variation speed of a fading channel by using the estimated channel response and determining a transmit antenna diversity scheme suitable to the variation speed of the fading channel; and transmits feedback information including the determined transmit antenna diversity scheme to the Node B, so that the Node B can determine a transmit antenna diversity scheme for a channel signal to be transmitted to the UE based on the transmit antenna diversity scheme information included in the feedback information. In this way, the Node B adaptively applies a transmit antenna diversity according to a channel condition.