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:
May. 17, 2011
Filed:
Sep. 24, 2007
Young-doo Kim, Suwon-si, KR;
Eung Sun Kim, Suwon-si, KR;
Chang Wook Ahn, Gwangju, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method of controlling data transmission mode in an orthogonal frequency division multiple access (OFDMA) wireless relay system and an apparatus using the method are provided. The method of controlling data transmission mode includes: dividing all frequency bands of an OFDM signal into a frequency band group including at least one subcarrier band; estimating a plurality of channels of wireless links which respectively link a base station (BS), at least one relay station (RS), and a mobile station (MS) with respect to the at least one subcarrier band; selecting any one of a plurality of data transmission modes based on a feature of the estimated plurality of channels of wireless links with respect to the frequency band group; and applying the selected data transmission mode to all of the at least one subcarrier bands in the frequency band group to transmit data.