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:
Jan. 30, 2018
Filed:
Dec. 05, 2013
Applicant:
Ntt Docomo, Inc., Tokyo, JP;
Inventors:
Tooru Uchino, Tokyo, JP;
Sadayuki Abeta, Tokyo, JP;
Kazuaki Takeda, Tokyo, JP;
Hiroyuki Ishii, Palo Alto, CA (US);
Assignee:
NTT DOCOMO, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 3/24 (2006.01); H04W 74/08 (2009.01); H04W 8/26 (2009.01); H04W 16/32 (2009.01);
U.S. Cl.
CPC ...
H04W 74/085 (2013.01); H04W 8/26 (2013.01); H04W 16/32 (2013.01);
Abstract
A system and method to prevent collision between mobile stations to which the same C-RNTI is allocated in a simple implementation while avoiding a problem of C-RNTI depletion in a phantom cell is disclosed. A radio base station includes an allocation unit configured to allocate multiple C-RNTIs to each of mobile stations, and the allocation unit performs adjustment such that collision of search spaces to which PDCCH resources are allocated does not occur among the multiple mobile stations.