A method of transmitting and receiving a signal to and from a base station, BS, by a user equipment, UE, in a wireless communication system, the method comprising: receiving, from the BS , a signal composed of at least one code block group, CBG; transmitting (S1730), to the BS , acknowledgement, ACK, information for each CBG, wherein the ACK information includes a plurality of numbers of bit information, wherein each CBG comprises at least one code block, CB, wherein the plurality of numbers of the bit information indicates one of states among one state for indicating ACK and N states for indicating non-acknowledgement, NACK, where N is a natural number larger than 1, and wherein each of the N states indicates a combination of at least one of: first information indicating whether a number of CBs where the NACK occurs in a corresponding CBG is greater than or equal to a predetermined value, and whether, when the number of the CBs where the NACK occurs is greater than or equal to the predetermined value, there are consecutive CBs among the CBs where the NACK occurs; second information indicating a location region including the CBs where the NACK occurs in the corresponding CBG; third information indicating a range including a ratio of the CBs where the NACK occurs to whole CBs included in the corresponding CBG; and fourth information indicating a retransmission method preferred by the UE for the corresponding CBG; and, when some CBs in the received signal composed of the at least one CBG are dropped by the BS , receiving information on the dropped CBs from the BS. receiving, from the BS , a signal composed of at least one code block group, CBG; transmitting (S1730), to the BS , acknowledgement, ACK, information for each CBG, wherein the ACK information includes a plurality of numbers of bit information, wherein each CBG comprises at least one code block, CB, wherein the plurality of numbers of the bit information indicates one of states among one state for indicating ACK and N states for indicating non-acknowledgement, NACK, where N is a natural number larger than 1, and wherein each of the N states indicates a combination of at least one of: first information indicating whether a number of CBs where the NACK occurs in a corresponding CBG is greater than or equal to a predetermined value, and whether, when the number of the CBs where the NACK occurs is greater than or equal to the predetermined value, there are consecutive CBs among the CBs where the NACK occurs; second information indicating a location region including the CBs where the NACK occurs in the corresponding CBG; third information indicating a range including a ratio of the CBs where the NACK occurs to whole CBs included in the corresponding CBG; and fourth information indicating a retransmission method preferred by the UE for the corresponding CBG; and, when some CBs in the received signal composed of the at least one CBG are dropped by the BS , receiving information on the dropped CBs from the BS. first information indicating whether a number of CBs where the NACK occurs in a corresponding CBG is greater than or equal to a predetermined value, and whether, when the number of the CBs where the NACK occurs is greater than or equal to the predetermined value, there are consecutive CBs among the CBs where the NACK occurs; second information indicating a location region including the CBs where the NACK occurs in the corresponding CBG; third information indicating a range including a ratio of the CBs where the NACK occurs to whole CBs included in the corresponding CBG; and fourth information indicating a retransmission method preferred by the UE for the corresponding CBG; and, when some CBs in the received signal composed of the at least one CBG are dropped by the BS , receiving information on the dropped CBs from the BS. <EOS>