Transmitting wake-up signals for paging operations

Patent metadata

Field	Value
Publication number	US-12328676-B2
Application number	US-202318488088-A
Country	US
Kind code	B2
Filing date	Oct 17, 2023
Priority date	Jul 23, 2020
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A base station is configured to transmit wake-up signals to a user equipment to wake-up the UE to receive a page from the base station. The base station transmits one or more synchronization signals, wherein the synchronization signals correspond to a wake-up signal (WUS) that is to be transmitted to a user equipment (UE) operating in a paging discontinuous reception (DRX) cycle, wherein the paging DRX cycle includes a paging occasion (PO) and transmits the WUS to the UE during a WUS occasion, wherein the WUS indicates whether the UE is to utilize an active mode or a sleep mode during the PO.

First claim

What is claimed:

1. A method performed by a base station, comprising:
configuring a wake-up signal (WUS) that is to be transmitted to a plurality of user equipment (UE) operating in a paging discontinuous reception (DRX) cycle, wherein a first group of UEs are associated with a first paging occasion (PO) and a second group of UEs are associated with a second PO, wherein the WUS indicates whether the first group of UEs are to wake-up or remain asleep during the first PO and whether the second group of UEs are to wake-up or remain asleep during the second PO, wherein the WUS comprises a first common indication indicating whether the first group of UEs and the second group of UEs are to wake-up or remain asleep for the respective first PO or second PO, wherein the first PO and the second PO each comprise a plurality of POs and wherein the WUS further comprises a second common indication of a number of consecutive first POs and second POs to which the first common indication applies; and
transmitting the WUS to the plurality of UEs.

2. The method of claim 1 , wherein the WUS is configured to include information about a serving type.

3. The method of claim 1 , wherein the WUS is configured to include information about an access type.

4. The method of claim 1 , wherein the WUS is configured to include information about a paging type.

5. The method of claim 4 , wherein the WUS is configured to include information indicating that the paging type is RAN initiated.

6. The method of claim 1 , wherein the WUS is configured to include network slicing information.

7. A method performed by a base station, comprising:
transmitting one or more synchronization signals, wherein the synchronization signals correspond to a wake-up signal (WUS) that is to be transmitted to the UE when the UE is operating in a paging discontinuous reception (DRX) cycle that includes a paging occasion (PO); and
transmitting the WUS to at least the UE during a WUS occasion, wherein the WUS indicates that the UE is to utilize an active mode during the PO when the WUS includes the group ID and the UE is to utilize a sleep mode during the PO when the WUS does not include the group ID, wherein transmitting the WUS to the UE includes transmitting multiple beams during the WUS occasion that each include a same WUS.

8. The method of claim 7 , wherein the WUS is transmitted as downlink control information (DCI) in a Physical Downlink Control Channel (PDCCH).

9. The method of claim 7 , wherein the WUS is scheduled via one of a WUS specific radio network temporary identifier (RNTI) for the UE or a paging radio network temporary identifier (P-RNTI) for the UE.

10. The method of claim 7 , wherein the WUS occasion is associated with the PO based on a predefined timing offset.

11. The method of claim 7 , wherein the paging DRX cycle includes multiple WUS occasions and each WUS occasion is located in time prior to any PO included in a paging frame.

12. The method of claim 7 , wherein the UE is included in a first paging group, and
wherein the WUS occasion is associated with the first paging group and a second different paging group.

13. The method of claim 12 , wherein the WUS includes i) an indication that is common to both the first paging group and the second paging group or ii) a first indication for the first paging group and a second different indication for the second paging group.

14. The method of claim 12 , wherein the WUS occasion is included in a WUS occasion set and wherein each WUS occasion in the WUS occasion set is associated with the same PO.

15. A method performed by a base station, comprising:
configuring a wake-up signal (WUS) that is to be transmitted to a plurality of user equipment (UE) operating in a paging discontinuous reception (DRX) cycle, wherein a first group of UEs are associated with a first paging occasion (PO) and a second group of UEs are associated with a second PO, wherein the WUS indicates whether the first group of UEs are to wake-up or remain asleep during the first PO and whether the second group of UEs are to wake-up or remain asleep during the second PO, wherein the WUS comprises a first indication indicating whether the first group of UEs are to wake-up or remain asleep for first PO and a second indication indicating whether the second group of UEs are to wake-up or remain asleep for second PO, wherein the first PO and the second PO each comprise a plurality of POs and wherein the WUS further comprises a first common indication of a number of consecutive first POs to which the first indication applies and a number of consecutive second POs to which the second indication applies; and
transmitting the WUS to the plurality of UEs.

16. The method of claim 15 , wherein the WUS is configured to include information about a serving type.

17. The method of claim 15 , wherein the WUS is configured to include information about an access type.

18. The method of claim 15 , wherein the WUS is configured to include information about a paging type.

19. The method of claim 18 , wherein the WUS is configured to include information indicating that the paging type is RAN initiated.

20. The method of claim 15 , wherein the WUS is configured to include network slicing information.

Assignees

• Apple Inc

Inventors

• Xu Fangli
• Yao Chunhai
• Rodgers Clive E
• Zhang Dawei
• Hu Haijing
• Sun Haitong
• Xing Longda
• Shikari Murtaza A
• Vangala Sarma V
• Gurumoorthy Sethuraman
• Lovlekar Srirang A
• Zeng Wei
• Kim Yuchul
• Chen Yuqin
• Zhang Yushu
• Wu Zhibin

Classifications

• H04W76/28

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

• H04W68/005

  Transmission of information for alerting of incoming communication · CPC title

• H04W56/001

  Synchronization between nodes · CPC title

• H04W52/0248 Primary

  dependent on the time of the day, e.g. according to expected transmission activity · CPC title

• H04W52/0274

  by switching on or off the equipment or parts thereof · CPC title