Sleep method for terminal device and apparatus

1. A sleep method for a terminal device, comprising:

determining whether no wake-up indication signal is received within a preset time; and

based on a determination that no wake-up indication signal is received within the preset time,

stopping, by the terminal device, an activity timer when the activity timer is running, wherein the running of the activity timer starts in response to the terminal device receiving a physical downlink control channel (PDCCH); or

stopping, by the terminal device, a retransmission timer when the retransmission timer is running, wherein the terminal device monitors the PDCCH in response to the retransmission timer running;

wherein discontinuous reception (DRX) is configured for the terminal device.

2. The sleep method according to claim 1 , wherein the method further comprises:

receiving a go-to-sleep signal within the preset time; or

skipping receipt of a wake-up signal within the preset time; or

receiving an indication signal within the preset time, wherein the indication signal comprises go-to-sleep indication information.

3. The sleep method according to claim 1 , wherein:

the discontinuous reception (DRX) being configured for the terminal device comprises: configuring a DRX cycle for the terminal device; and

the stopping of the activity timer comprises:

stopping the activity timer when a next DRX cycle of a current DRX cycle starts.

4. The sleep method according to claim 1 , wherein:

the discontinuous reception (DRX) being configured for the terminal device comprises: configuring a DRX cycle for the terminal device; and

the stopping of the retransmission timer comprises:

stopping the retransmission timer when a next DRX cycle of a current DRX cycle starts.

5. The sleep method according to claim 1 , further comprising:

based on the determination that no wake-up indication signal is received within the preset time, stopping the activity timer and resetting the activity timer; or

based on the determination that no wake-up indication signal is received within the preset time, stopping the retransmission timer and resetting the retransmission timer; or

based on the determination that no wake-up indication signal is received within the preset time, stopping the activity timer and the retransmission timer, and resetting the activity timer and the retransmission timer.

6. The sleep method according to claim 1 , wherein the retransmission timer is an uplink retransmission timer and/or a downlink retransmission timer.

7. The sleep method according to claim 1 , further comprising:

stopping the activity timer, and starting or restarting a short cycle timer when the terminal device receives no wake-up indication signal within the preset time,

wherein the terminal device uses a short DRX cycle when the short cycle timer runs.

8. The sleep method according to claim 1 , further comprising:

stopping the activity timer, and using a long DRX cycle when the terminal device receives no wake-up indication signal within the preset time.

9. The sleep method according to claim 8 , further comprising:

stopping a short cycle timer, or stopping and resetting the short cycle timer, when the terminal device receives no wake-up indication signal within the preset time,

wherein the terminal device uses a short DRX cycle when the short cycle timer runs.

10. The sleep method according to claim 1 , wherein the wake-up indication signal is a physical layer sequence, downlink control information (DCI), a medium access control control element (MAC CE), or a medium access control protocol data unit (MAC PDU).

11. The sleep method according to claim 10 , further comprising:

skipping starting or restarting the activity timer when the wake-up indication signal is downlink control information DCI.

12. The sleep method according to claim 1 , further comprising:

stopping the on-duration timer based on the determination that no wake-up indication signal is received within the preset time, or

stopping and resetting the on-duration timer based on the determination that no wake-up indication signal is received within the preset time.

13. The sleep method according to claim 1 , wherein the preset time is:

a time point at which an On Duration in a DRX cycle starts or a time point within the On Duration in the DRX cycle; or

a time period that is the On Duration in the DRX cycle.

14. A terminal device, comprising a processor coupled to a memory, the memory is configured to store instructions which upon execution by the processor such that the terminal device is at least configured to:

determine whether no wake-up indication signal is received within a preset time; and

based on a determination that no wake-up indication signal is received within the preset time,

stop an activity timer when the activity timer is running, wherein the running of the activity timer starts when the terminal device receives a physical downlink control channel (PDCCH); or

stop a retransmission timer when the retransmission timer is running, wherein the terminal device monitors the PDCCH when the retransmission timer runs;

wherein discontinuous reception (DRX) is configured for the terminal device.

15. The terminal device according to claim 14 , wherein the preset time is:

a time point at which an On Duration in a DRX cycle starts or a time point within the On Duration in the DRX cycle; or

a time period that is the On Duration in the DRX cycle.