Reporting of radio channel quality

A method implemented in a first radio device (UE) for quality reporting of a radio channel (2) comprising: Determining a condition of the radio channel and entering a monitoring phase if the condition of the radio channel exhibits an invariance of statistics of the radio channel (810, 81 1 ), Receiving at least one data symbol via said radio channel during the monitoring phase (812), Determining a statistical characterization of the radio channel based on the received data symbol (813), and Reporting a quality of the radio channel (2) to a second radio device if the statistical characterization exceeds a predetermined threshold (814).