A method for allocating a Cell-Radio Network Temporary Identity, C-RNTI, in a scenario where cell resources of a plurality of base stations are aggregated for a User Equipment, UE, wherein the method comprises: allocating by an initial access base station of the UE a first dedicated C-RNTI; when the UE enters the coverage area of a cell associated with a destination base station aggregated for the UE: issuing by the destination base station aggregated for the UE a bearer separation instruction in a message including configuration information of a bearer to be handed over in bearer separation and the identity of the UE to the initial access base station of the UE via an interface between the base stations to request the destination base station aggregated for the UE for allocating to the UE a second dedicated C-RNTI of the UE being served by the initial access base station of the UE; transferring the second dedicated C-RNTI from the initial access base station of the UE to the destination base station aggregated for the UE; transmitting by the destination base station aggregated for the UE an instruction of bearer separation to the UE and notifying the UE of the received second dedicated C-RNTI; and performing in a state of bearer separation by the initial access base station of the UE and the destination base station aggregated for the UE dynamic scheduling using the first and second C-RNTI. allocating by an initial access base station of the UE a first dedicated C-RNTI; when the UE enters the coverage area of a cell associated with a destination base station aggregated for the UE: issuing by the destination base station aggregated for the UE a bearer separation instruction in a message including configuration information of a bearer to be handed over in bearer separation and the identity of the UE to the initial access base station of the UE via an interface between the base stations to request the destination base station aggregated for the UE for allocating to the UE a second dedicated C-RNTI of the UE being served by the initial access base station of the UE; transferring the second dedicated C-RNTI from the initial access base station of the UE to the destination base station aggregated for the UE; transmitting by the destination base station aggregated for the UE an instruction of bearer separation to the UE and notifying the UE of the received second dedicated C-RNTI; and performing in a state of bearer separation by the initial access base station of the UE and the destination base station aggregated for the UE dynamic scheduling using the first and second C-RNTI. issuing by the destination base station aggregated for the UE a bearer separation instruction in a message including configuration information of a bearer to be handed over in bearer separation and the identity of the UE to the initial access base station of the UE via an interface between the base stations to request the destination base station aggregated for the UE for allocating to the UE a second dedicated C-RNTI of the UE being served by the initial access base station of the UE; transferring the second dedicated C-RNTI from the initial access base station of the UE to the destination base station aggregated for the UE; transmitting by the destination base station aggregated for the UE an instruction of bearer separation to the UE and notifying the UE of the received second dedicated C-RNTI; and performing in a state of bearer separation by the initial access base station of the UE and the destination base station aggregated for the UE dynamic scheduling using the first and second C-RNTI.