With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, after the sending, by the RNC, the instruction information to the UE, the method further includes receiving, by the RNC, a fourth measurement report sent by the UE, where the fourth measurement report is sent by the UE to the RNC when the common pilot channel quality of the macro base station is greater than the second condition threshold value for addition to the second active set; and sending, by the RNC, third control information to the UE, so that the UE adds the macro base station to the second active set according to the third control information; or receiving, by the RNC, a fourth measurement report sent by the UE, where the fourth measurement report is sent by the UE to the RNC when the common pilot channel quality of the macro base station is less than the fourth threshold value; and sending, by the RNC, fourth control information to the UE, so that the UE removes the macro base station from the third active set according to the fourth control information.