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:
May. 23, 2017
Filed:
May. 14, 2015
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Yousef Naief Shnaiwer, Dhahran, SA;
Salam Adel Zummo, Dhahran, SA;
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;
Abstract
The spectrum-efficient secondary users grouping method for two-tier cognitive radio groups femtocell base stations (FBSs) and macrocell secondary users (MSUs) into non-interfering groups based on their GPS location information, and then serves the FBSs/MSUs within each group using the same channel. A first approach for grouping the secondary users (SUs) is distance-based. A second approach utilizes profit maximization. Both approaches are extended to a co-channel deployment scenario where the FBSs can share part of the channels purchased for the MSUs to further reduce the number of channels to be purchased from the PU networks. The distance-based grouping method finds the minimum number of groups such that the desired quality of service (QoS) determined by an outage probability threshold is maintained. The profit maximization method tries to find the set of SUs that maximizes the expected total profit of the SU network.