A method for determining transmission interval information, comprising: determining, by a base station, interval information for sending acknowledgement information, ACK/NACK, corresponding to downlink data transmission, wherein the acknowledgement information is used for determining whether downlink data is correctly received by a user equipment, UE; sending, by the base station, the interval information for sending acknowledgement information, ACK/NACK, corresponding to downlink data transmission to the UE; and receiving, by the base station, the acknowledgement information at a position indicated by the interval information to determine whether the downlink data is correctly received by the UE; wherein the interval information is determined by the base station in the following manner: configuring an interval between a position of the ACK/NACK information corresponding to the downlink data transmission and a position of the downlink data transmission; wherein the interval is represented by N4 and M4, N4 being configured through higher-layer signaling or physical layer signaling; in the interval, when the downlink data transmission of the UE is in scheduling unit n, the ACK/NACK information corresponding to the downlink data transmission is in scheduling unit n+N4, and M4 describes a starting OFDM symbol of the ACK/NACK information in the scheduling unit n+N4; wherein a total number of symbols following the position of the starting OFDM symbol is determined in the following manner: the base station and the UE agree on the total number of symbols following the position of the starting OFDM symbol, or the base station notifies the total number of symbols following the position of the starting OFDM symbol to the UE through signaling. determining, by a base station, interval information for sending acknowledgement information, ACK/NACK, corresponding to downlink data transmission, wherein the acknowledgement information is used for determining whether downlink data is correctly received by a user equipment, UE; sending, by the base station, the interval information for sending acknowledgement information, ACK/NACK, corresponding to downlink data transmission to the UE; and receiving, by the base station, the acknowledgement information at a position indicated by the interval information to determine whether the downlink data is correctly received by the UE; wherein the interval information is determined by the base station in the following manner: configuring an interval between a position of the ACK/NACK information corresponding to the downlink data transmission and a position of the downlink data transmission; wherein the interval is represented by N4 and M4, N4 being configured through higher-layer signaling or physical layer signaling; in the interval, when the downlink data transmission of the UE is in scheduling unit n, the ACK/NACK information corresponding to the downlink data transmission is in scheduling unit n+N4, and M4 describes a starting OFDM symbol of the ACK/NACK information in the scheduling unit n+N4; wherein a total number of symbols following the position of the starting OFDM symbol is determined in the following manner: the base station and the UE agree on the total number of symbols following the position of the starting OFDM symbol, or the base station notifies the total number of symbols following the position of the starting OFDM symbol to the UE through signaling. configuring an interval between a position of the ACK/NACK information corresponding to the downlink data transmission and a position of the downlink data transmission; wherein the interval is represented by N4 and M4, N4 being configured through higher-layer signaling or physical layer signaling; in the interval, when the downlink data transmission of the UE is in scheduling unit n, the ACK/NACK information corresponding to the downlink data transmission is in scheduling unit n+N4, and M4 describes a starting OFDM symbol of the ACK/NACK information in the scheduling unit n+N4; wherein a total number of symbols following the position of the starting OFDM symbol is determined in the following manner: the base station and the UE agree on the total number of symbols following the position of the starting OFDM symbol, or the base station notifies the total number of symbols following the position of the starting OFDM symbol to the UE through signaling.