Patent ID: 8094761

Claim:
A method for data transmission, comprising the steps of: at one of a plurality of user equipment within a cell comprising a base station and the plurality of user equipment, measuring first and second values respectively corresponding to one of two codewords defined in a multiple input multiple output (MIMO) data transmission system, and calculating a difference between a first measurement corresponding to the first measured value and a second measurement corresponding to the second measured value; at the one of the plurality of user equipment, receiving a plurality of predetermined parameters determined at the base station, configuring a first quantization table defining a mapping between the difference and a delta channel quality information (CQI) indicator carrying channel quality information upon reception of the plurality of predetermined parameters, and determining the value of the delta CQI indicator based on the calculated difference and the configured first quantization table; and at the one of the plurality of user equipment, transmitting the determined delta CQI indicator to the base station.