| CPC H04L 5/0048 (2013.01) | 12 Claims |

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1. A method for activating a secondary cell, applied to a terminal, the method comprising:
receiving a reference signal activation signaling, wherein the reference signal activation signaling is used for activating a reference signal, and the reference signal is used for activation of the secondary cell; and
receiving the reference signal based on the reference signal activation signaling, and activating the secondary cell,
wherein:
the reference signal activation signaling is any one of an MAC CE or a DCI,
wherein a time domain length of the reference signal is indicated by a reference signal configuration signaling sent by a network device, wherein the time domain length of the reference signal is represented by a number of repeated transmissions of the reference signal, and a number of time domain positions occupied by the reference signal is four times the number of repeated transmissions.
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