A base station, comprising: a baseband unit, a radio remote unit, a power supply device, a signal transmission device, and a backup power supply device, wherein: the power supply device is configured to convert an input alternating current into a direct current and output the direct current to the baseband unit, the radio remote unit, the signal transmission device, and the backup power supply device; the backup power supply device is configured to output a direct current to the baseband unit, the radio remote unit, and the signal transmission device in a case in which the alternating current is off; and the signal transmission device is configured to convert a signal output by the baseband unit into a long-distance transmission signal and output the long-distance transmission signal, wherein: the baseband unit, the radio remote unit, the power supply device, the signal transmission device, and the backup power supply device are mounted on an antenna tower or a pole; wherein the power supply device, the signal transmission device, and the backup power supply device, the baseband unit, and the radio remote unit are referred to as tower-mounted devices; the tower-mounted devices mounted on the antenna tower or the pole are arranged side-by-side in one or more rows in a height direction of the antenna tower or the pole; and each row has one or more of the tower-mounted devices; wherein a side surface of the tower-mounted device by which the tower-mounted device is mounted on the antenna tower or the pole is a mounting side surface; a side surface, opposite to the mounting side surface, of the tower-mounted device is provided with a cable outlet; and an electrical signal transmission line of the tower-mounted device extends from the inside of the tower-mounted device to the outside of the tower-mounted device through the cable outlet. the power supply device is configured to convert an input alternating current into a direct current and output the direct current to the baseband unit, the radio remote unit, the signal transmission device, and the backup power supply device; the backup power supply device is configured to output a direct current to the baseband unit, the radio remote unit, and the signal transmission device in a case in which the alternating current is off; and the signal transmission device is configured to convert a signal output by the baseband unit into a long-distance transmission signal and output the long-distance transmission signal, wherein: the baseband unit, the radio remote unit, the power supply device, the signal transmission device, and the backup power supply device are mounted on an antenna tower or a pole; wherein the power supply device, the signal transmission device, and the backup power supply device, the baseband unit, and the radio remote unit are referred to as tower-mounted devices; the tower-mounted devices mounted on the antenna tower or the pole are arranged side-by-side in one or more rows in a height direction of the antenna tower or the pole; and each row has one or more of the tower-mounted devices; wherein a side surface of the tower-mounted device by which the tower-mounted device is mounted on the antenna tower or the pole is a mounting side surface; a side surface, opposite to the mounting side surface, of the tower-mounted device is provided with a cable outlet; and an electrical signal transmission line of the tower-mounted device extends from the inside of the tower-mounted device to the outside of the tower-mounted device through the cable outlet. the baseband unit, the radio remote unit, the power supply device, the signal transmission device, and the backup power supply device are mounted on an antenna tower or a pole; wherein the power supply device, the signal transmission device, and the backup power supply device, the baseband unit, and the radio remote unit are referred to as tower-mounted devices; the tower-mounted devices mounted on the antenna tower or the pole are arranged side-by-side in one or more rows in a height direction of the antenna tower or the pole; and each row has one or more of the tower-mounted devices; wherein a side surface of the tower-mounted device by which the tower-mounted device is mounted on the antenna tower or the pole is a mounting side surface; a side surface, opposite to the mounting side surface, of the tower-mounted device is provided with a cable outlet; and an electrical signal transmission line of the tower-mounted device extends from the inside of the tower-mounted device to the outside of the tower-mounted device through the cable outlet.