A method for carrier activation, performed by user equipment, UE, and comprising: receiving wake-up information on a predetermined carrier, the predetermined carrier being one of at least two carriers allocated to the UE, and the predetermined carrier being configured to transmit the wake-up information, wherein the wake-up information comprises downlink control signaling; activating the predetermined carrier and at least one other carrier based on the wake-up information, the at least one other carrier being at least one carrier other than the predetermined carrier in the at least two carriers; wherein activating the predetermined carrier and the at least one other carrier based on the wake-up information comprises: reading indication information in the downlink control signaling; and activating the predetermined carrier and the at least one other carrier based on the indication information; and characterized by comprising: wherein reading the indication information in the downlink control signaling comprises: acquiring position information of the indication information in response to the indication information having a flexible position in the downlink control signaling, the position information indicating a position of the indication information at present time in the downlink control signaling; and reading the indication information at the position indicated by the position information in the downlink control signaling. receiving wake-up information on a predetermined carrier, the predetermined carrier being one of at least two carriers allocated to the UE, and the predetermined carrier being configured to transmit the wake-up information, wherein the wake-up information comprises downlink control signaling; activating the predetermined carrier and at least one other carrier based on the wake-up information, the at least one other carrier being at least one carrier other than the predetermined carrier in the at least two carriers; wherein activating the predetermined carrier and the at least one other carrier based on the wake-up information comprises: reading indication information in the downlink control signaling; and activating the predetermined carrier and the at least one other carrier based on the indication information; and characterized by comprising: wherein reading the indication information in the downlink control signaling comprises: acquiring position information of the indication information in response to the indication information having a flexible position in the downlink control signaling, the position information indicating a position of the indication information at present time in the downlink control signaling; and reading the indication information at the position indicated by the position information in the downlink control signaling. reading indication information in the downlink control signaling; and activating the predetermined carrier and the at least one other carrier based on the indication information; and characterized by comprising: wherein reading the indication information in the downlink control signaling comprises: acquiring position information of the indication information in response to the indication information having a flexible position in the downlink control signaling, the position information indicating a position of the indication information at present time in the downlink control signaling; and reading the indication information at the position indicated by the position information in the downlink control signaling.