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:
Dec. 25, 2012
Filed:
Dec. 11, 2008
Mustafa Emin Sahin, Tampa, FL (US);
Huseyin Arslan, Tampa, FL (US);
Ismail Guvenc, Santa Clara, CA (US);
Moo Ryong Jeong, Saratoga, CA (US);
Mustafa Emin Sahin, Tampa, FL (US);
Huseyin Arslan, Tampa, FL (US);
Ismail Guvenc, Santa Clara, CA (US);
Moo Ryong Jeong, Saratoga, CA (US);
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A femtocell increases efficiency and coverage of a macrocellular network operating in a co-channel manner within the macrocell spectrum by selecting subcarriers for its mobile station using both the subcarrier allocation map received from the macrocell and a spectrum sensing operation. Interference is avoided by selecting only subcarriers not allocated by the macrocell and subcarriers allocated to users not nearby to the femtocell. Interference is eliminated from the received signals using co-channel interference avoidance techniques. Selection of subcarriers for femtocell use may take into consideration inter-carrier interference detected.