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. 22, 2014
Filed:
Jul. 06, 2009
Dong Guk Lim, Inchen-si, KR;
Wook Bong Lee, Sungnam-si, KR;
Su Nam Kim, Seoul, KR;
Bin Chul Ihm, Anyang-si, KR;
Jae Wan Kim, Seoul, KR;
Dong Guk Lim, Inchen-si, KR;
Wook Bong Lee, Sungnam-si, KR;
Su Nam Kim, Seoul, KR;
Bin Chul Ihm, Anyang-si, KR;
Jae Wan Kim, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A method is disclosed for avoiding inter-cell interference in a closed-loop multiple-input multiple-output (MIMO) system using a plurality of codebooks. A base station of a serving cell transmits information about codebooks used in an interfering cell among the plurality of codebooks to a mobile station. The transmission of the information may be made at the request of the mobile station. Alternatively, the mobile station may directly measure information about codebooks used in the interfering cell among the plurality of codebooks. The mobile station measures restricted precoding matrix indexes (PMIs) or requested PMIs based on the codebook information. The measured PMIs are transmitted to the interfering cell and are used to restrict the use of a PMI in the interfering cell.