Further, after the RNC sends the instruction information to the UE, and correspondingly, after the UE performs service transmission according to the instruction information, that is, after the UE moves out of area E, the method further includes that the RNC receives 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 the RNC sends 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.
Alternatively, after the RNC sends the instruction information to the UE, the method further includes that the RNC receives 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 the RNC sends 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.