Adaptation of active-time PDCCH monitoring using short discontinuous reception (DRX)

Patent metadata

Field	Value
Publication number	US-12289788-B2
Application number	US-202017620387-A
Country	US
Kind code	B2
Filing date	Jun 18, 2020
Priority date	Jun 18, 2019
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

A method, system, network node and wireless device are disclosed. In one or more embodiments, A network node configured to communicate with a wireless device is provided. The network node includes processing circuitry configured to: determine a short DRX configuration based at least on a delay value constraint associated with the wireless device, and transmit an indication of the short DRX configuration and a long DRX configuration where the short DRX configuration corresponds to a shorter cycle length than a cycle length of the long DRX configuration.

First claim

What is claimed is:

1. A network node configured to communicate with a wireless device, the network node comprising:
processing circuitry configured to:
determine a short DRX discontinuous reception (DRX) configuration based at least on a delay value constraint associated with the wireless device, the delay value constraint being a data delay for a next burst and corresponding to a value that meets a predefined performance threshold at the wireless device; and
transmit an indication of the short DRX configuration and a long DRX configuration, the short DRX configuration corresponding to a shorter cycle length than a cycle length of the long DRX configuration.

2. The network node of claim 1 , wherein the delay value constraint is based at least on at least one of:
capability signaling associated with the wireless device;
traffic type;
downlink/uplink buffer; and
delay in signaling.

3. The network node of claim 1 , wherein the short DRX configuration is based at least on an on-duration length constraint, the on-duration length constraint being based on a capability signaling associated with the wireless device.

4. The network node of claim 3 , wherein the on-duration length constraint is based at least on one of a monitoring duty cycle and scheduling flexibility.

5. The network node of claim 1 , wherein the short DRX configuration is configured to occur after a data burst and during an inactivity timer phase of the long DRX configuration.

6. The network node of claim 1 , wherein an on-duration length of the short DRX configuration is configured to correspond to an on-duration length of the long DRX configuration, the short DRX configuration resulting in sparce monitoring compared to the long DRX configuration.

7. The network node of claim 1 , wherein an on-duration length of the short DRX configuration is configured to be shorter than an on-duration length of the long DRX configuration.

8. The network node of claim 1 , wherein an inactivity time for the short DRX configuration is shorter than an inactivity time for the long DRX configuration.

9. The network node of claim 1 , wherein the processing circuitry is further configured to:
determine that the wireless device missed at least one physical downlink control channel scheduling; and
retransmit physical downlink control channel scheduling in at least one on-duration of the short DRX configuration.

10. A wireless device that is configured to communicate with a network node, the wireless device comprising:
processing circuitry configured to:
receive a short DRX discontinuous reception (DRX) configuration and a long DRX configuration; and
implement the short DRX configuration and the long DRX configuration, the short DRX configuration being based at least on a delay value constraint associated with the wireless device and corresponding to a shorter cycle length than a cycle length of the long DRX configuration, the delay value constraint being a data delay for a next burst and corresponding to a value that meets a predefined performance threshold at the wireless device.

11. The wireless device of claim 10 , wherein the delay value constraint is based at least on at least one of:
capability signaling associated with the wireless device;
traffic type;
downlink/uplink buffer; and
delay in signaling.

12. The wireless device of claim 10 , wherein the short DRX configuration is based at least on an on-duration length constraint, the on-duration length constraint being based on a capability signaling associated with the wireless device.

13. The wireless device of claim 12 , wherein the on-duration length constraint is based at least on one of a monitoring duty cycle and scheduling flexibility.

14. The wireless device of claim 10 , wherein the processing circuitry is further configured to cause transmission of one of:
capability signaling to the network node via radio resource control, RRC, signaling;
assistance information related to ongoing one of traffic and services.

15. The wireless device of claim 10 , wherein a short DRX phase of the short DRX configuration is configured to occur after a data burst and during an inactivity timer phase of the long DRX configuration.

16. The wireless device of claim 10 , wherein an on-duration length of the short DRX configuration is configured to correspond to an on-duration length of the long DRX configuration, the short DRX configuration resulting in sparce monitoring compared to the long DRX configuration.

17. The wireless device of claim 10 , wherein an on-duration length of the short DRX configuration is configured to be shorter than an on-duration length of the long DRX configuration.

18. The wireless device of claim 10 , wherein an inactivity time for the short DRX configuration is shorter than an inactivity time for the long DRX configuration.

19. The wireless device of claim 10 , wherein the processing circuitry is further configured to:
enter a short DRX phase of the short DRX configuration based at least on a missed physical downlink control channel scheduling; and
receive a retransmission of a physical downlink control channel scheduling in at least one on-duration of the short DRX configuration.

20. A method implemented by a network node that is configured to communicate with a wireless device, the method comprising:
determining a short DRX discontinuous reception (DRX) configuration based at least on a delay value constraint associated with the wireless device, the delay value constraint being a data delay for a next burst and corresponding to a value that meets a predefined performance threshold at the wireless device; and
transmitting an indication of the short DRX configuration and a long DRX configuration, the short DRX configuration corresponding to a shorter cycle length than a cycle length of the long DRX configuration.

21. A method implemented by a wireless device that is configured to communicate with a network node, the method comprising:
receiving a short DRX discontinuous reception (DRX) configuration and a long DRX configuration; and
implementing the short DRX configuration and the long DRX configuration, the short DRX configuration being based at least on a delay value constraint associated with the wireless device and corresponding to a shorter cycle length than a cycle length of the long DRX configuration, the delay value constraint being a data delay for a next burst and corresponding to a value that meets a predefined performance threshold at the wireless device.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Reial Andres
• Shubhi Ilmiawan
• Mathecken Pramod Jacob
• Maleki Sina
• Nader Ali
• Van Der Zee Martin

Classifications

• Y02D30/70

  in wireless communication networks · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L1/1896

  ARQ related signaling · CPC title

• H04W52/0216

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

• H04W76/28 Primary

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