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Wireless communication method and apparatus for adaptively biasing channel quality indicators to maintain a desired block error rate
   
Document Number
US Patent 7492722
Issued Date
February 17, 2009
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Inventors
Pietraski; Philip J. (Huntington Station, NY)
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Abstract
A method and apparatus for adaptively biasing a channel quality indicator (CQI) used for setting a configuration of communication between a transmitter and a receiver in a wireless communication system. The receiver sends a CQI and positive acknowledgement (ACK)/negative acknowledgement (NACK) messages to the transmitter. The ACK/NACK messages indicate the absence or presence of error, respectively, in a transmitted data packet. The CQI is derived from the signal-to-interference ratio (SIR) and the ACK/NACK messages. The transmitter calculates the block error rate (BLER) of the transmitted data packets based upon the ACK/NACK messages sent from the receiver. The transmitter compares the BLER of the transmitted data packets to a target BLER and biases the CQI based on the comparison in order to achieve the target BLER.
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Number of Claims:
8
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Published
February 17, 2009
Application Number
10/981,248
Filed
November 4, 2004
US Classification
370/252   370/332
Int'l Classification
G06F   11/00   (20060101)  
Examiner
Attorney/Law Firm
USPTO Field of Search
370/252   370/332  
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