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:
Feb. 21, 2012
Filed:
Apr. 13, 2009
Tae Soo Kwon, Hwaseong-si, KR;
Woong Sup Lee, Daejeon, KR;
Kyung Hun Jang, Suwon-si, KR;
Hyo Sun Hwang, Seoul, KR;
Dong Ho Cho, Seoul, KR;
Ho Won Lee, Chungju-si, KR;
O Hyun JO, Cheongju-si, KR;
Tae Soo Kwon, Hwaseong-si, KR;
Woong Sup Lee, Daejeon, KR;
Kyung Hun Jang, Suwon-si, KR;
Hyo Sun Hwang, Seoul, KR;
Dong Ho Cho, Seoul, KR;
Ho Won Lee, Chungju-si, KR;
O Hyun Jo, Cheongju-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Korea Advanced Institute of Science and Technology, Daejeon, KR;
Abstract
A cognitive radio communication device and method are provided. The cognitive radio communication device includes a reception unit to receive reference signals from a first communication device, a frequency division unit to divide operating frequency bands of the first communication device into a plurality of sub frequency bands, a first sensing unit to sense each of the plurality of sub frequency bands using the reference signals to estimate whether the first communication device uses each of the plurality of sub frequency bands, and to determine an unused frequency band group including at least one sub frequency band not used by the first communication device based on the estimated result, and a transmission unit to transmit data to a second communication device using the sub frequency band included in the unused frequency band group.