An information transmission method, applicable to a base station, and comprising: determining transmission configuration information of an unlicensed spectrum, the transmission configuration information being used to indicate each data transmission starting position in a preset time window; sending the transmission configuration information to user equipment, UE; and performing information transmission with the UE using a channel of the unlicensed spectrum according to the transmission configuration information, characterized by determining the transmission configuration information of the unlicensed spectrum comprises: determining a number of data transmission starting positions in the preset time window, configuring each data transmission starting position in the preset time window according to the number of the data transmission starting positions, to obtain configuration information, and determining the transmission configuration information of the unlicensed spectrum according to the configuration information of the data transmission starting positions in the preset time window; or querying a preset transmission configuration list according to preset reference information to determine target configuration information of data transmission starting positions in the preset time window, the preset transmission configuration list comprising a correspondence between preset reference information and configuration information of preset data transmission starting positions, and determining the transmission configuration information of the unlicensed spectrum according to the target configuration information. determining transmission configuration information of an unlicensed spectrum, the transmission configuration information being used to indicate each data transmission starting position in a preset time window; sending the transmission configuration information to user equipment, UE; and performing information transmission with the UE using a channel of the unlicensed spectrum according to the transmission configuration information, characterized by determining the transmission configuration information of the unlicensed spectrum comprises: determining a number of data transmission starting positions in the preset time window, configuring each data transmission starting position in the preset time window according to the number of the data transmission starting positions, to obtain configuration information, and determining the transmission configuration information of the unlicensed spectrum according to the configuration information of the data transmission starting positions in the preset time window; or querying a preset transmission configuration list according to preset reference information to determine target configuration information of data transmission starting positions in the preset time window, the preset transmission configuration list comprising a correspondence between preset reference information and configuration information of preset data transmission starting positions, and determining the transmission configuration information of the unlicensed spectrum according to the target configuration information. determining a number of data transmission starting positions in the preset time window, configuring each data transmission starting position in the preset time window according to the number of the data transmission starting positions, to obtain configuration information, and determining the transmission configuration information of the unlicensed spectrum according to the configuration information of the data transmission starting positions in the preset time window; or querying a preset transmission configuration list according to preset reference information to determine target configuration information of data transmission starting positions in the preset time window, the preset transmission configuration list comprising a correspondence between preset reference information and configuration information of preset data transmission starting positions, and determining the transmission configuration information of the unlicensed spectrum according to the target configuration information.