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. 10, 2004
Filed:
Apr. 12, 1999
Wookwon Lee, Ottawa, CA;
Norman P. Secord, Ottawa, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
A closed loop power control apparatus is implemented within a basestation that receives a series of physical channels from a mobile station simultaneously in a DS-CDMA communication system such as those based on the cdma2000 specifications. This power control apparatus includes a series of Rakes that separate the code-subchannels, a series of SINR estimation devices that estimate the SINR for each of the code-subchannels, and a series of comparators thaw generate a multiple of power control bits that correspond to comparison results between the SINR estimates and a set of power threshold levels. These power control bits are transmitted to the mobile station and subsequently allow the mobile station to control the transmit powers for the physical channels individually.