Any one of the following dual connectivity attributes is assigned to a group profile of each service group: (1) macro cell only (serving both data/control planes via a macro cell base station.), (2) small cell only (serving data/control planes via a small cell base station), (3) dual connectivity enabled-A (serving data plane of UEs via a small cell base station, and serving control plane via a macro cell base station), and (4) dual connectivity enabled-B (serving data plane via both a macro cell base station and a small cell base station, and serving control plane via a macro cell base station).