A method for monitoring a channel, applied to a user equipment, UE, the method comprises: monitoring a channel by using a discontinuous reception, DRX, or extended DRX, eDRX, scheme in a time window after being woken up from a sleep mode according to a network configuration upon reception of a wake-up signal; processing information when the UE receives the information in the time window; and stopping monitoring the channel, and continuing to monitor the wake-up signal when the UE does not receive the information in the time window; wherein the channel comprises a paging channel, and the information comprises a paging message; or, the channel comprises a control channel, and the information comprises control channel scheduling information; wherein monitoring, by the UE, the channel by using the DRX or eDRX scheme in the time window after being woken up upon reception of the wake-up signal comprises: entering an idle or inactive state, starting the time window, and monitoring the paging channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the idle or inactive state is woken up upon reception of the wake-up signal, wherein a length of the time window is prescribed by a protocol, configured by a network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling; wherein the time window is implemented by using a timer, or the time window is a period of time for receiving N paging messages, wherein N is an integer larger than 1; wherein the method further comprises: reading system information, and entering a sleep mode, after the UE in the sleep mode is woken up by the wake-up signal transmitted by the network side apparatus when the system information is updated. monitoring a channel by using a discontinuous reception, DRX, or extended DRX, eDRX, scheme in a time window after being woken up from a sleep mode according to a network configuration upon reception of a wake-up signal; processing information when the UE receives the information in the time window; and stopping monitoring the channel, and continuing to monitor the wake-up signal when the UE does not receive the information in the time window; wherein the channel comprises a paging channel, and the information comprises a paging message; or, the channel comprises a control channel, and the information comprises control channel scheduling information; wherein monitoring, by the UE, the channel by using the DRX or eDRX scheme in the time window after being woken up upon reception of the wake-up signal comprises: entering an idle or inactive state, starting the time window, and monitoring the paging channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the idle or inactive state is woken up upon reception of the wake-up signal, wherein a length of the time window is prescribed by a protocol, configured by a network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling; wherein the time window is implemented by using a timer, or the time window is a period of time for receiving N paging messages, wherein N is an integer larger than 1; wherein the method further comprises: reading system information, and entering a sleep mode, after the UE in the sleep mode is woken up by the wake-up signal transmitted by the network side apparatus when the system information is updated. entering an idle or inactive state, starting the time window, and monitoring the paging channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the idle or inactive state is woken up upon reception of the wake-up signal, wherein a length of the time window is prescribed by a protocol, configured by a network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling; wherein the time window is implemented by using a timer, or the time window is a period of time for receiving N paging messages, wherein N is an integer larger than 1; wherein the method further comprises: reading system information, and entering a sleep mode, after the UE in the sleep mode is woken up by the wake-up signal transmitted by the network side apparatus when the system information is updated.