User equipment, UE, comprising: an I/O module (110, 707), configured to display an intelligent-shutdown-mode setting interface to a user, wherein the intelligent-shutdown-mode setting interface comprises a setting option for shutting down/starting a radio frequency chain (140, 704) of the UE, and the I/O module (110, 707) is further configured to obtain setting information of the user on the intelligent-shutdown-mode setting interface, and send the setting information to an intelligent shutdown module (120, 702); the intelligent shutdown module (120, 702), configured to receive the setting information sent by the I/O module (110, 707), modify wireless transmission capability report information of the UE according to the setting information, send modified wireless transmission capability report information to a communications module (130, 702), and shut down/start the radio frequency chain of the UE; and the communications module (130, 702), configured to receive the modified wireless transmission capability report information that is sent by the intelligent shutdown module (120, 702), and send the modified wireless transmission capability report information to a base station, characterised in that the communications module (130, 702) is further configured to receive an acknowledgement message sent by the base station, and send the acknowledgement message to the intelligent shutdown module (120, 702); and the intelligent shutdown module (120, 702) is specifically configured to: according to the setting information, first modify the wireless transmission capability report information of the UE, send the modified wireless transmission capability report information to the communications module (130, 702), then receive the acknowledgement message sent by the communications module (130, 702), and then shut down/start the radio frequency chain (140, 704) of the UE. an I/O module (110, 707), configured to display an intelligent-shutdown-mode setting interface to a user, wherein the intelligent-shutdown-mode setting interface comprises a setting option for shutting down/starting a radio frequency chain (140, 704) of the UE, and the I/O module (110, 707) is further configured to obtain setting information of the user on the intelligent-shutdown-mode setting interface, and send the setting information to an intelligent shutdown module (120, 702); the intelligent shutdown module (120, 702), configured to receive the setting information sent by the I/O module (110, 707), modify wireless transmission capability report information of the UE according to the setting information, send modified wireless transmission capability report information to a communications module (130, 702), and shut down/start the radio frequency chain of the UE; and the communications module (130, 702), configured to receive the modified wireless transmission capability report information that is sent by the intelligent shutdown module (120, 702), and send the modified wireless transmission capability report information to a base station, characterised in that the communications module (130, 702) is further configured to receive an acknowledgement message sent by the base station, and send the acknowledgement message to the intelligent shutdown module (120, 702); and the intelligent shutdown module (120, 702) is specifically configured to: according to the setting information, first modify the wireless transmission capability report information of the UE, send the modified wireless transmission capability report information to the communications module (130, 702), then receive the acknowledgement message sent by the communications module (130, 702), and then shut down/start the radio frequency chain (140, 704) of the UE.