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. 24, 1998
Filed:
May. 02, 1995
Applicant:
Inventor:
Nobuya Takahashi, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
455449 ; 455422 ;
Abstract
Co-channel interference due to the use of smaller and lighter mobile communication terminals at elevated locations in the recent widespread mobile communications services can be prevented from increasing by applying an overlapping cell configuration composed of a plurality of groups of cells, for example, a group of cells covering a ground surface and another group of larger cells covering an elevated space above the ground surface, and assigning different groups of radio frequency channels to the groups of cells.