A method of handling simultaneous communications between a communication device, a first base station and a second base station, the method comprising: the first base station configuring a radio resource control, RRC, connection to the communication device; the first base station transmitting a first measurement configuration via the RRC connection to the communication device, wherein the first measurement configuration comprises a first measurement identity; the second base station configuring a signalling radio bearer, SRB, to the communication device via the first base station; the second base station transmitting a second measurement configuration via the SRB to the communication device, wherein the second measurement configuration comprises a second measurement identity; the first base station receiving a first measurement report corresponding to the first measurement configuration via the RRC connection from the communication device; the second base station receiving a second measurement report corresponding to the second measurement configuration via the SRB from the communication device; the second base station adding a secondary cell, SCell, of the second base station to the communication device, releasing a SCell of the communication device, or changing a primary secondary cell, PSCell, of the communication device via the first base station or via the SRB, in response to the second measurement report; and the first base station and the second base station independently allocate the first measurement identity of the first measurement configuration and the second measurement identity of the second measurement configuration, respectively; or the first base station transmitting the first measurement identity of the first measurement configuration to the second base station; and the second base station setting a second measurement identity of the second measurement configuration, wherein the second measurement identity of the second measurement configuration is different from the first measurement identity. the first base station configuring a radio resource control, RRC, connection to the communication device; the first base station transmitting a first measurement configuration via the RRC connection to the communication device, wherein the first measurement configuration comprises a first measurement identity; the second base station configuring a signalling radio bearer, SRB, to the communication device via the first base station; the second base station transmitting a second measurement configuration via the SRB to the communication device, wherein the second measurement configuration comprises a second measurement identity; the first base station receiving a first measurement report corresponding to the first measurement configuration via the RRC connection from the communication device; the second base station receiving a second measurement report corresponding to the second measurement configuration via the SRB from the communication device; the second base station adding a secondary cell, SCell, of the second base station to the communication device, releasing a SCell of the communication device, or changing a primary secondary cell, PSCell, of the communication device via the first base station or via the SRB, in response to the second measurement report; and the first base station and the second base station independently allocate the first measurement identity of the first measurement configuration and the second measurement identity of the second measurement configuration, respectively; or the first base station transmitting the first measurement identity of the first measurement configuration to the second base station; and the second base station setting a second measurement identity of the second measurement configuration, wherein the second measurement identity of the second measurement configuration is different from the first measurement identity.