Method and apparatus for measurement reporting in carrier aggregation wireless communication systems

A control circuit which, in operation, controls a wireless communication process of a terminal apparatus, the control circuit comprising:

• processing circuitry, which, in operation:
• detects occurrences of an event in a cell, among multiple cells including serving cells and non-serving cells, wherein the serving cells are aggregately used to communicate with a base station on serving frequencies, and the non-serving cells are not presently used to communicate with the base station;
• measures radio conditions of the serving cells and the non-serving cells;
• selects the best non-serving cell from the non-serving cells based on reference signal received power (RSRP) on one of the serving frequencies;
• and
• in response to detection of an occurrence of the event, creates a measurement report including radio conditions of the selected best non-serving cell, and
• transmission circuitry, which is coupled to the processing circuitry and which, in operation, controls transmission of the measurement report to the base station.