Patent ID: 8121590

Claim:
A method in a node of cellular telecommunication network capable of simultaneously using multiple carrier frequencies comprising a primary carrier frequency and at least one secondary carrier frequency, the method comprises the steps of: receiving downlink quality measurements of a primary carrier frequency and of at least one secondary carrier frequency; combining the received downlink quality measurements of the primary carrier frequency and of the at least one secondary carrier frequency by: determining a combined downlink quality measure for the downlink quality measurements of the primary carrier frequency and the at least one secondary carrier frequency; and determining a difference in logarithmic scale between the downlink quality measurements of the primary carrier frequency and the combined downlink quality measure for the downlink quality measurements of the primary carrier frequency and the at least one secondary carrier frequency to be used as a combined quality measure; evaluating whether the combined quality measure fulfills a predetermined condition; and triggering an event only if the combined quality measure fulfills the predetermined condition.