1. A method of receiving transport blocks (TBs) by a wireless device connected to a plurality of base stations (BSs) in a wireless communication system, the method comprising:detecting a plurality of TBs transmitted by the plurality of BSs;
determining whether a sum total of bits of the plurality of TBs exceeds a maximum TB size supported by the wireless device;
when the sum total of the bits of the plurality of TBs exceeds the maximum TB size,
deciding to receive a first TB among the plurality of TBs and to drop a second TB among the plurality of TBs according to a priority, and
transmitting information indicating the sum total of bits exceeds the maximum TB size to one of the plurality of BSs which schedules the second TB,
wherein the information includes the number of bits of the second TB within one transmission time interval (TTI).