Wireless network having an enhanced wake-up signal

Patent metadata

Field	Value
Publication number	US-12041544-B2
Application number	US-202017593830-A
Country	US
Kind code	B2
Filing date	Oct 14, 2020
Priority date	Oct 14, 2020
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A method for power saving, comprising: establishing a radio resource control (RRC) connection with a wireless device, transmitting, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time, transmitting an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period, determining that the wireless device can skip monitoring one or more future EWUS monitoring occasions, transmitting, during a first DRX cycle, a EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions, and skipping transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

First claim

What is claimed is:

1. A method for power saving, comprising:
establishing a radio resource control (RRC) connection with a wireless device;
transmitting, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time;
transmitting an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period;
determining that the wireless device can skip monitoring one or more future EWUS monitoring occasions;
transmitting, during a first DRX cycle, a EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions and PDCCH monitoring instances associated with the one or more future EWUS monitoring occasions to skip; and
skipping transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

2. The method of claim 1 , wherein the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion.

3. The method of claim 1 , further comprising:
determining to transmit data to the wireless device in two or more physical downlink control channel (PDCCH) messages; and
determining a number of PDCCH messages to transmit, and wherein the one or more future EWUS monitoring occasions are determined based on the number of PDCCH messages to transmit.

4. The method of claim 1 , wherein skipping transmitting the EWUS comprises skipping transmitting the EWUS in a next EWUS monitoring occasion, and further comprising skipping transmitting a PDCCH message associated with the next EWUS monitoring occasion.

5. The method of claim 1 , further comprising determining not to transmit a first number of physical downlink control channel (PDCCH) messages to the wireless device, wherein the first number is two or more.

6. A device comprising:
an antenna;
a radio operably coupled to the antenna; and
a processor operably coupled to the radio;
wherein the device is configured to:
establish a radio resource control (RRC) connection with a wireless device;
transmit, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time;
transmit an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period;
determine that the wireless device can skip monitoring one or more future EWUS monitoring occasions;
transmit, during a first DRX cycle, a EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions and PDCCH monitoring instances associated with the one or more future EWUS monitoring occasions to skip; and
skip transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

7. The device of claim 6 , wherein the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion.

8. The device of claim 6 , wherein the device is further configured to:
determine to transmit data to the wireless device in two or more physical downlink control channel (PDCCH) messages; and
determine a number of PDCCH messages to transmit, and wherein the one or more future EWUS monitoring occasions are determined based on the number of PDCCH messages to transmit.

9. The device of claim 6 , wherein the EWUS is transmitted in a downlink control message.

10. The device of claim 6 , wherein the EWUS indicates whether to skip monitoring a PDCCH instance associated with a EWUS monitoring occasion.

11. The device of claim 6 , wherein the EWUS is associated with a predetermined default number of EWUS monitoring occasions to skip.

12. A non-transitory computer readable medium comprising computer readable code executable by a processor to:
establish a radio resource control (RRC) connection with a wireless device;
transmit, to the wireless device, configuration information indicating a discontinuous reception (DRX) cycle time, a DRX on time period, and an offset time;
transmit an enhanced wake-up signal (EWUS) monitoring occasion for a DRX cycle, the EWUS monitoring occasion based on the offset time and the DRX on time period;
determine that the wireless device can skip monitoring one or more future EWUS monitoring occasions;
transmit, during a first DRX cycle, a EWUS for the wireless device during the EWUS monitoring occasion associated with the first DRX cycle, the EWUS indicating that the wireless device can skip the one or more future EWUS monitoring occasions, wherein the EWUS includes an encoded value indicating a number of EWUS monitoring occasions and PDCCH monitoring instances associated with the one or more future EWUS monitoring occasions to skip; and
skip transmitting the EWUS to the wireless device during the one or more future EWUS monitoring occasions.

13. The non-transitory computer readable medium of claim 12 , wherein the EWUS indicates that the wireless device monitor a physical downlink control channel (PDCCH) instance in a next DRX cycle, wherein the PDCCH instance is associated with the EWUS monitoring occasion.

14. The non-transitory computer readable medium of claim 12 , wherein the device is further configured to:
determine to transmit data to the wireless device in two or more physical downlink control channel (PDCCH) messages; and
determine a number of PDCCH messages to transmit, and wherein the one or more future EWUS monitoring occasions are determined based on the number of PDCCH messages to transmit.

15. The non-transitory computer readable medium of claim 12 , wherein the device is configured to skip transmitting the EWUS by skipping transmitting the EWUS in a next EWUS monitoring occasion; and wherein the device is further configured to skip transmitting a PDCCH message associated with the next EWUS monitoring occasion.

16. The non-transitory computer readable medium of claim 12 , wherein the device is further configured to determine not to transmit a first number of physical downlink control channel (PDCCH) messages to the wireless device, wherein the first number is two or more.

Assignees

• Apple Inc

Inventors

• Gurumoorthy Sethuraman
• Xu Fangli
• Kumar Adesh
• Breining Birgit
• Zhang Dawei
• Hu Haijing
• Xing Longda
• Palle Venkata Naveen Kumar R
• Vangala Sarma V
• Ye Sigen
• Lovlekar Srirang A
• Zeng Wei
• Chen Yuqin
• Wu Zhibin

Classifications

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W76/28

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

• H04W52/028

  switching on or off only a part of the equipment circuit blocks · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title