Method and device for wakeup time control

Patent metadata

Field	Value
Publication number	US-12414045-B2
Application number	US-202017916790-A
Country	US
Kind code	B2
Filing date	Apr 7, 2020
Priority date	Apr 7, 2020
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A method and device for wakeup time control. A first terminal determines available resources in a resource pool. The available resources are resources for sidelink communication between the first terminal and a second terminal. The first terminal controls the time when the first terminal is in a wakeup state on the basis of the available resources.

First claim

What is claimed is:

1. A method for wakeup time control, comprising:
determining, by a first terminal, available resources in a resource pool, wherein the available resources comprise resources for sidelink communication between the first terminal and a second terminal; and
controlling, by the first terminal, a time when the first terminal is in a wakeup state based on the available resources;
wherein controlling, by the first terminal, the time when the first terminal is in the wakeup state based on the available resources comprises:
controlling, by the first terminal, a running of a timer based on the available resources, wherein the first terminal is in the wakeup state while the timer is running, and the timer comprises at least one of an inactivity timer, a transmission Discontinuous Reception (DRX) retransmission timer, or a reception DRX retransmission timer;
wherein controlling, by the first terminal, the running of the timer based on the available resources comprises at least one of:
not starting a reception DRX retransmission timer, and starting the reception DRX retransmission timer until a time domain location where available resources for the second terminal are located is reached, in response to determining that there is no available resource for the second terminal to send a retransmission signal when a reception Hybrid Automatic Repeat reQuest Round-Tri
p Time (HARQ RTT) timer expires; or
not starting a transmission DRX retransmission timer, and starting the transmission DRX retransmission timer until a time domain location where available resources for the second terminal are located is reached, in response to determining that there is no available resource for the second terminal to send a feedback signal when a transmission HARQ RTT timer expires.

2. The method of claim 1 , wherein the available resources comprise at least one of receiving resources for the first terminal to receive signals from the second terminal, or sending resources for the second terminal to send signals to the first terminal.

3. The method of claim 1 , wherein controlling, by the first terminal, the running of the timer based on the available resources comprises at least one of:
starting a reception DRX retransmission timer, in response to determining that there are available resources for the second terminal to send a retransmission signal when a reception HARQ RTT timer is expires;
starting a transmission DRX retransmission timer in response to determining that there are available resources for the second terminal to send a feedback signal when a transmission HARQ RTT timer expires; or
pausing the timer during an interval of the available resources in response to determining that available resources for the second terminal to send a signal are discontinuous in a time domain.

4. The method of claim 3 , further comprising at least one of:
starting, by the first terminal, the reception HARQ RTT timer in response to the first terminal sending a feedback signal for instructing the second terminal to retransmit; or
starting the transmission HARQ RTT timer in response to the first terminal sending feedback indication information for instructing the second terminal to send a feedback signal.

5. The method of claim 1 , further comprising:
controlling, by the first terminal, a running duration of the timer based on timer configuration parameters.

6. The method of claim 5 , wherein the timer configuration parameters comprise a length and an offset of the timer, and wherein the method further comprises:
controlling, by the first terminal, the running duration of the timer based on the timer configuration parameters, comprises:
obtaining, by the first terminal, a sum of the length and the offset of the timer as the running duration of the timer.

7. The method of claim 1 , further comprising:
receiving, by the first terminal, timer configuration parameters.

8. The method of claim 7 , wherein receiving, by the first terminal, the timer configuration parameters, comprises:
receiving, by the first terminal, the timer configuration parameters sent by an access network device through a Radio Resource Control (RRC) reconfiguration message; or
receiving, by the first terminal, the timer configuration parameters sent by the second terminal through a sidelink RRC reconfiguration message.

9. The method of claim 1 , further comprising at least one of:
monitoring, by the first terminal, a Physical Sidelink Control Channel (PSCCH) and a Physical Sidelink Shared Channel (PSSCH) when a reception DRX retransmission timer is running, to obtain a retransmission signal from the second terminal; or
monitoring, by the first terminal, a Physical Sidelink Feedback Channel (PSFCH) when a transmission DRX retransmission timer is running, to obtain a feedback signal from the second terminal.

10. A first terminal, comprising:
a processor;
a memory configured to store instructions executable by the processor;
wherein, the processor is configured to load and execute the executable instructions, and the processor is configured to:
determine available resources in a resource pool, wherein the available resources comprise resources for sidelink communication between the first terminal and a second terminal; and
control a time when the first terminal is in a wakeup state based on the available resources;
control a running of a timer based on the available resources, wherein the first terminal is in the wakeup state while the timer is running, and the timer comprises at least one of an inactivity timer, a transmission Discontinuous Reception (DRX) retransmission timer, or a reception DRX retransmission timer;
the processor is configured to perform at least one of:
not starting a reception DRX retransmission timer, and starting the reception DRX retransmission timer until a time domain location where available resources for the second terminal are located is reached, in response to determining that there is no available resource for the second terminal to send a retransmission signal when a reception Hybrid Automatic Repeat reQuest Round-Trip Time (HARQ RTT) timer expires; or
not starting a transmission DRX retransmission timer, and starting the transmission DRX retransmission timer until a time domain location where available resources for the second terminal are located is reached, in response to determining that there is no available resource for the second terminal to send a feedback signal when a transmission HARQ RTT timer expires.

11. A non-transitory computer readable storage medium, wherein when instructions in the computer storage medium are executed by a processor, a method for wakeup time control is implemented, the method comprising:
determining by a first terminal, available resources in a resource pool, wherein the available resources comprise resources for sidelink communication between the first terminal and a second terminal; and
controlling by the first terminal, a time when the first terminal is in a wakeup state based on the available resources;
wherein controlling, by the first terminal, the time when the first terminal is in the wakeup state based on the available resources comprises:
controlling, by the first terminal, a running of a timer based on the available resources, wherein the first terminal is in the wakeup state while the timer is running, and the timer comprises at least one of an inactivity timer, a transmission Discontinuous Reception (DRX) retransmission timer, or a reception DRX retransmission timer;
wherein controlling, by the first terminal, the running of the timer based on the available resources comprises at least one of:
not starting a reception DRX retransmissio

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Yang Xing

Classifications

• H04W76/23

  Manipulation of direct-mode connections · CPC title

• H04W76/28

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title

• H04L1/1893

  Physical mapping arrangements (physical resource mapping in general H04L5/00) · CPC title

• H04L1/1861

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title

• H04L1/1896

  ARQ related signaling · CPC title