Method and device for activating and deactivating SCCs (secondary component carriers) in carrier aggregation

The invention discloses a method and a device for activating and deactivating SCCs (secondary component carriers) in carrier aggregation, and relates to communication technologies. When cache data volumes reported by an RLC (radio link control) reach activating data volume thresholds, the SCCs are not activated directly and count values of SCC activating counters are increased; when monitoring requirements are met, if the count values of the SCC activating counters and the specific values of reported times of the RLC both reach activating thresholds, multiple reported cache data volumes all reach the activating data volume thresholds, and then the SCCs are activated. Therefore, multiple activation and deactivation in a short time are avoided, and velocity stability of the SCCs is improved.