An information determination method, applied to a network side device, the method comprising: for a plurality of configurations of uplink grant-free transmission, detecting uplink transmission on a resource corresponding to at least one of the plurality of configurations; and in a case that a first configuration corresponding to a resource where the uplink transmission is detected is not a predetermined configuration, determining a hybrid automatic repeat request, HARQ, identification, ID, of the detected uplink transmission, according to association information between the first configuration and the predetermined configuration; wherein the determining the HARQ ID of the detected uplink transmission according to the association information between the first configuration and the predetermined configuration comprises: determining a time domain position of a first transmission opportunity, TO, in the first configuration; determining, in the predetermined configuration, a target period associated with the time domain position of the first TO; and determining the HARQ ID of the detected uplink transmission according to attribute information of the target period; wherein the determining the HARQ ID of the detected uplink transmission according to attribute information of the target period comprises: acquiring a sequence number of a first OFDM symbol of the first TO in the target period in system frames, a quantity of OFDM symbols in the target period, and a total quantity of HARQ processes; and determining the HARQ ID according to the sequence number, the quantity of OFDM symbols and the total quantity of HARQ processes. for a plurality of configurations of uplink grant-free transmission, detecting uplink transmission on a resource corresponding to at least one of the plurality of configurations; and in a case that a first configuration corresponding to a resource where the uplink transmission is detected is not a predetermined configuration, determining a hybrid automatic repeat request, HARQ, identification, ID, of the detected uplink transmission, according to association information between the first configuration and the predetermined configuration; wherein the determining the HARQ ID of the detected uplink transmission according to the association information between the first configuration and the predetermined configuration comprises: determining a time domain position of a first transmission opportunity, TO, in the first configuration; determining, in the predetermined configuration, a target period associated with the time domain position of the first TO; and determining the HARQ ID of the detected uplink transmission according to attribute information of the target period; wherein the determining the HARQ ID of the detected uplink transmission according to attribute information of the target period comprises: acquiring a sequence number of a first OFDM symbol of the first TO in the target period in system frames, a quantity of OFDM symbols in the target period, and a total quantity of HARQ processes; and determining the HARQ ID according to the sequence number, the quantity of OFDM symbols and the total quantity of HARQ processes. determining a time domain position of a first transmission opportunity, TO, in the first configuration; determining, in the predetermined configuration, a target period associated with the time domain position of the first TO; and determining the HARQ ID of the detected uplink transmission according to attribute information of the target period; wherein the determining the HARQ ID of the detected uplink transmission according to attribute information of the target period comprises: acquiring a sequence number of a first OFDM symbol of the first TO in the target period in system frames, a quantity of OFDM symbols in the target period, and a total quantity of HARQ processes; and determining the HARQ ID according to the sequence number, the quantity of OFDM symbols and the total quantity of HARQ processes.