Patent ID: 8908645

Claim:
A method for processing a measurement task in a carrier aggregation system, comprising: deleting, by a network element, a measurement task related to a Secondary Cell (Scell) in a deleted source Scell, when the measurement object configured by the source base station for an UE contains the carrier frequency of a new Primary Cell (Pcell) and the measurement object related to the measurement task is the frequency on which there is a target Pcell, modifying a corresponding measurement object to a measurement object of the frequency on which there is a new Pcell; and if the measurement object related to the measurement task is the frequency on which there is the source Pcell, modifying the measurement object to a measurement object of the frequency on which there is the new Pcell; otherwise, deleting the measurement task corresponding to the frequency on which there is the source Pcell; wherein the source Pcell and the target Pcell are on different frequencies.