Patent ID: 8428017

Claim:
A method in a user equipment for measuring an instantaneous downlink channel quality indicator (CQI), and reporting a CQI value to the network, comprising: deriving a true CQI value based upon at least one network controlled parameter and a measured channel quality parameter; when higher order modulation of 64 QAM and above is used for downlink data transmission, multiplying said true CQI value with a scaling factor to obtain a new CQI value such that the new CQI value will fall within a specified range of CQI values that is different from a range of CQI values prior to the multiplying, wherein the multiplying is used to report the CQI value with the same number of bits when the higher order modulation is used for the downlink data transmission as when the higher order modulation is not used for downlink data transmission; and reporting the new CQI value as the CQI value if the higher order modulation is used for downlink data transmission.