According to a seventh aspect, an embodiment of the present disclosure provides a micro base station, including a receiving module configured to receive configuration information sent by a radio network controller RNC in an access network, where the configuration information is used to instruct the micro base station to receive an uplink DCH and/or uplink E-DCH service sent by a user equipment UE; and a processing module configured to receive, in a first active set according to the configuration information after the micro base station is added by the UE to the first active set when the UE performs service transmission in a first area, the uplink DCH and/or uplink E-DCH service sent by the UE, where the first area is an area in which common pilot channel quality of the micro base station is between common pilot channel quality of the micro base station that reaches a first threshold value for addition to the first active set and common pilot channel quality of the micro base station that reaches a first condition threshold value for addition to a second active set, and the common pilot channel quality of the micro base station is obtained by the UE in the first area by means of measurement, where the first active set includes an extended DCH active set and/or an extended E-DCH active set, where the extended DCH active set supports the UE to send an uplink DCH service, a micro base station in the extended DCH active set receives the uplink DCH service sent by the UE, the extended E-DCH active set supports the UE to send an E-DCH service, and a micro base station in the extended E-DCH active set receives the E-DCH service sent by the UE; and in the first active set, the UE may receive and calculate a LLR of a DCH service of a macro base station in the first active set, and input the LLR as a Viterbi decoder to perform Viterbi decoding.