Method, apparatus, and device for reducing terminal power consumption

Patent metadata

Field	Value
Publication number	US-12256332-B2
Application number	US-202017765188-A
Country	US
Kind code	B2
Filing date	Sep 22, 2020
Priority date	Sep 30, 2019
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

A method for reducing terminal power consumption includes sending, by a terminal device to an access device, power saving indication information indicating a power saving capability of the terminal device, and when the terminal device is idle, determining, by the access device, a sleep mode of the terminal device based on the power saving indication information and sending a sleep signal to the terminal device to indicate the terminal device to enter the sleep mode.

First claim

What is claimed is:

1. A method implemented by an access device, wherein the method comprises:
receiving, from a terminal device, power saving indication information indicating a power saving capability of the terminal device;
determining, based on the power saving indication information, a sleep mode of the terminal device when the terminal device is idle, wherein the sleep mode comprises an out-of-band sleep mode and an in-band sleep mode, wherein a main radio (MR) of the terminal device is disabled and a wake-up radio (WUR) of the terminal device is enabled when the terminal device is in the out-of-band sleep mode, wherein the MR listens to a wake-up signal (WUS) when the terminal device is in the in-band sleep mode, and wherein the terminal device is idle when the access device does not receive data from a core network device to the terminal device; and
sending, to the terminal device, a sleep signal instructing the terminal device to enter the sleep mode.

2. The method of claim 1 , further comprising waking up, based on the power saving indication information, the terminal device when the terminal device needs to be woken up.

3. The method of claim 2 , wherein the power saving indication information further indicates the WUS supported by the terminal device, and wherein waking up the terminal device comprises:
sending an out-of-band WUS to the WUR when the power saving indication information indicates that the terminal device supports the out-of-band WUS, wherein the WUR is configured to wake up the MR based on the out-of-band WUS; and
sending an in-band WUS to the MR when the power saving indication information indicates that the terminal device supports the in-band WUS but does not support the out-of-band WUS, wherein the MR is configured to wake up based on the in-band WUS.

4. The method of claim 1 , wherein the sleep mode is based on a service type of the terminal device and the power saving indication information.

5. The method of claim 1 , wherein receiving the power saving indication information comprises receiving the power saving indication information through one of a Radio Resource Control (RRC) message, layer 1 (L1) signaling, uplink data piggybacking, or layer 2 (L2) signaling.

6. A method implemented by a terminal device, wherein the method comprises:
determining, based on a wake-up signal supported by the terminal device, power saving indication information indicating a power saving capability of the terminal device;
sending the power savingindication information to an access devicefor determining a sleep mode of the terminal device when the terminal device is idle, wherein the sleep mode comprises an out-of-band sleep mode and an in-band sleep mode, wherein a main radio (MR) of the terminal device is disabled and a wake-up radio (WUR) of the terminal device is enabled when the terminal device is in the out-of-band sleep mode, wherein the MR listens to a wake-up signal (WUS) when the terminal device is in the in-band sleep mode, and wherein the terminal device is idle when the access device does not receive data from a core network device to the terminal device;
receiving a sleep signal from the access device when the terminal device is idle; and
controlling, based on the sleep signal, the terminal device to enter the sleep mode.

7. The method of claim 6 , wherein the power saving indication information indicates the WUS supported by the terminal device, and wherein the method further comprises:
receiving, by the WUR, an out-of-band WUS from the access device when the power saving indication information indicates that the terminal device supports the out-of-band WUS; and
waking up the MR based on the out-of-band WUS.

8. The method of claim 6 , wherein the power saving indication information indicates the WUS supported by the terminal device, and wherein the method further comprises:
receiving, by the MR, an in-band WUS from the access device when the power saving indication information indicates that the terminal device supports the in-band WUS but does not support an out-of-band WUS; and
waking up the MR based on the in-band WUS.

9. The method of claim 6 , wherein the sleep mode is based on a service type of the terminal device and the power saving indication information when the terminal device is idle.

10. The method of claim 6 , further comprising sending updated power saving indication information to the access device when the terminal device detects a change to the power saving capability.

11. The method of claim 6 , wherein sending the power saving indication information comprises sending the power saving indication information through one of a Radio Resource Control (RRC) message, layer 1 (L1) signaling, uplink data piggybacking, or layer 2 (L2) signaling.

12. A terminal device comprising
a main radio (MR) configured to exchange data with an access device; and
a processor coupled to the MR and configured to:
determine power saving indication information based on a wake-up signal supported by the terminal device, wherein the power saving indication information indicates a power saving capability of the terminal device;
send the power saving indication information to the access device that determines a sleep mode of the terminal device when the terminal device is idle, wherein the sleep mode comprises an out-of-band sleep mode and an in-band sleep mode, wherein a main radio (MR) of the terminal device is disabled and a wake-up radio (WUR) of the terminal device is enabled when the terminal device is in the out-of-band sleep mode, wherein the MR listens to a wake-up signal (WUS) when the terminal device is in the in-band sleep mode, and wherein the terminal device is idle when the access device does not receive data from a core network device to the terminal device;

receive a sleep signal from the access device when the terminal device is idle; and
control, based on the sleep signal, the terminal device to enter the sleep mode.

13. The terminal device of claim 12 , wherein the power savingindication information further indicates the WUS supported by the terminal device, and wherein the processor is further configured to:
receive, by the WUR, an out-of-band WUS from the access device when the power saving indication information indicates that the terminal device supports the out-of-band WUS; and
wake up the MR based on the out-of-band WUS.

14. The terminal device of claim 12 , wherein the power savingindication information further indicates the WUS supported by the terminal device, and wherein the processor is further configured to:
receive, by the MR, an in-band WUS from the access device when the power saving indication information indicates that the terminal device supports the in-band WUS but does not support an out-of-band WUS; and
wake up the MR based on the in-band WUS.

15. The terminal device of claim 12 , wherein the sleep mode is based on a service type of the terminal device and the power saving indication information when the terminal device is idle.

16. The terminal device of claim 12 , wherein the processor is further configured to send updated power saving indication information to the access device when the terminal device detects a change to the power saving capability.

17. The terminal device of claim 12 , wherein the processor is further configured to send the power saving indication information through one of a Radio Resource Control (RRC) message, layer 1 (L1) signaling, uplink data piggybacking, or layer 2 (L2) signaling.

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhuang Hongcheng
• Fang Ping

Classifications

• H04W52/0212 Primary

  managed by the network, e.g. network or access point is leader and terminal is follower · CPC title

• H04W76/27

  Transitions between radio resource control [RRC] states · CPC title

• H04W8/24

  Transfer of terminal data · CPC title

• H04L41/344

  Out-of-band transfers · CPC title

• H04W52/0229

  where the received signal is a wanted signal · CPC title