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:
Jul. 21, 2015
Filed:
Feb. 24, 2012
Riku Jäntti, Espoo, FI;
Kalle Ruttik, Espoo, FI;
Konstantinos Koufos, Helsinki, FI;
AALTO-KORKEAKOULUSÄÄTIÖ, Espoo, FI;
Abstract
A method for controlling the aggregate interference of a secondary system () in a cognitive radio network comprises the steps of computing the power density (Pd,i), footprint (Afoot,i) and service area (Ai) for each of the cells () of the secondary system () that satisfy the interference constraint at a given point (P) in a primary system (); summing the power densities (Pd,i) for all cells () for the point (P); and using the sum of the power density at the point (P) to decide which power level a new secondary system () user is allowed to use in a given cell (). A system for performing such a method is also disclosed.