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:
Mar. 18, 2003
Filed:
Mar. 15, 1999
Frances Jiang, Whippany, NJ (US);
Raafat Edward Kamel, Westfield, NJ (US);
Quinn Li, Madison, NJ (US);
Alexandro Federico Salvarani, Edison, NJ (US);
Carl Francis Weaver, Hanover Township, Morris County, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method of controlling the power in a wireless communication system. In one embodiment of the invention, a base station determines the information rate of a signal to be transmitted to a mobile station, and obtains the variable power control scaling factor based on this information rate. The base station then transmits the variable power control scaling factor to the mobile station. The mobile station determines a target signal quality measurement for a received signal from the base station, such as a target E /N , and scales the target E /N by the variable power control scaling factor. The mobile station also obtains an information rate scaling factor based on the information rate of the received signal, and further scales the target E /N by this information rate scaling factor. The mobile station then compares the target E /N to a measured E /N of the received signal. An increase in power of the received signal is requested when the measured E /N of the received signal is smaller than the scaled E /N . A decrease in power of the received signal is requested when the measured E /N of the received signal is larger than the scaled E /N . Providing the variable power control scaling factor to the mobile station allows frames having an information rate lower than the full rate to be transmitted at a power even lower than the power of a frame having an information rate equal to the full rate times the information scaling factor.