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. 05, 2013
Filed:
Dec. 13, 2007
Johan Bergman, Stockholm, SE;
Håkan Björkegren, Täby, SE;
Carmela Cozzo, San Diego, CA (US);
Christer Edholm, Täby, SE;
Johan Bergman, Stockholm, SE;
Håkan Björkegren, Täby, SE;
Carmela Cozzo, San Diego, CA (US);
Christer Edholm, Täby, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Channel estimation accuracy is improved by adjusting the power level of a physical control channel allocated to a receiver based on the transmission rate and/or transport format of a corresponding physical data channel allocated to the same receiver. The physical control channel may be a DPCCH, E-DPCCH or other type of physical control channel allocated to a receiver for facilitating uplink or downlink communication. Regardless, the control channel power level is optimized for channel estimation as a function of data transmission rate and/or transport format. In one embodiment, control channel symbols are transmitted for use in channel estimation by adjusting the power level of a physical control channel allocated to a receiver based on the transmission rate and/or transport format of a physical data channel allocated to the receiver (). Control channel symbols are transmitted to the receiver over the physical control channel at the adjusted power level (). The receiver uses the control channel symbols to perform channel estimation ().