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:
Dec. 19, 2006
Filed:
Feb. 28, 2001
Hongliang Zhang, Sammamish, WA (US);
Louis Leung, Redmond, WA (US);
Jari Heinonen, Seattle, WA (US);
Mike Hirano, Redmond, WA (US);
Hongliang Zhang, Sammamish, WA (US);
Louis Leung, Redmond, WA (US);
Jari Heinonen, Seattle, WA (US);
Mike Hirano, Redmond, WA (US);
Cingular Wireless II, LLC, Atlanta, GA (US);
Abstract
An open loop power control system for an orthogonal frequency division modulation (OFDM)-based fixed/mobile wireless system. A preferred system and method comprise measuring signal strength of received interference-free pilot tones transmitted by a base station; determining pathloss according to received power level of pilot tones; and controlling transmit power level of the remote unit by adjusting transmitting channel attenuation according to the pathloss determined in the preceding step. The method may further comprise monitoring at the base station the received signal level of uplink pilot tones; checking if received signal level of uplink pilot tones is outside pre-set limits around the target level at the start of each call; and sending a command to the mobile station over the broadcast channel to increase or decrease the transmitting power level.