Wake-up dci for wireless devices in connected mode

Patent metadata

Field	Value
Publication number	US-2021392584-A1
Application number	US-201917279963-A
Country	US
Kind code	A1
Filing date	Sep 26, 2019
Priority date	Sep 28, 2018
Publication date	Dec 16, 2021
Grant date	—

Abstract

A method, system and apparatus are disclosed. In one or more embodiments, a network node configured to communicate with a wireless device (WD) is provided. The network node is configured to configure a wireless device with a wake-up indication, the wake-up indication configured to cause the wireless device to transition out of at least one of a low power mode or connected Discontinuous Reception (DRX) mode based on the wake-up indication. The network node is configured to signal the wake-up indication in a search space in a physical downlink control channel.

First claim

1 . A method implemented in a wireless device, WD, the method comprising:
receiving a wake-up indication in a search space in a physical downlink control channel; and transitioning out of at least one of a low power mode and a connected Discontinuous Reception, DRX, mode based on the wake-up indication.

2 . The method of claim 1 , wherein receiving the wake-up indication further comprises:
receiving the wake-up indication before a physical downlink control channel transmission that schedules data for the wireless device.

3 . The method of claim 1 , wherein the wake-up indication is wake-up downlink control information, WU-DCI.

4 . The method of claim 1 , wherein receiving the wake-up indication further comprises:
receiving the wake-up indication as part of a physical downlink control channel transmission that is separate from another physical downlink control channel transmission that schedules data to the wireless device.

5 . The method of claim 1 , wherein receiving the wake-up indication further comprises:
receiving the wake-up indication in at least one of a narrow bandwidth and a narrow search space.

6 . The method of claim 1 , wherein receiving the wake-up indication further comprises:
performing a cyclic redundancy check, CRC, using a radio network temporary identifier associated with the wireless device.

7 . The method of claim 1 , wherein receiving the wake-up indication further comprises:
performing a cyclic redundancy check, CRC, using a radio network temporary identifier associated with a wake-up group, the wireless device being a part of the wake-up group.

8 . The method of claim 1 , wherein the received wake-up indication includes dummy data.

9 . The method of claim 1 , wherein the received wake-up indication includes information about downlink data that the wireless device can expect to receive before transitioning back to the at least one of the low power mode and the connected DRX mode.

10 . The method of claim 1 , further comprising:
receiving, from a network node, a configuration of the wake-up indication, the configuration indicating a timing offset between the received wake-up indication and a physical downlink control channel transmission that schedules data for the wireless device.

11 . A method implemented by a network node, the method comprising:
configuring a wireless device with a wake-up indication, the wake-up indication configured to cause the wireless device to transition out of at least one of a low power mode or connected Discontinuous Reception (DRX) mode based on the wake-up indication; and signaling the wake-up indication in a search space in a physical downlink control channel.

12 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication before a physical downlink control channel transmission that schedules data for the wireless device.

13 . The method of claim 11 , wherein the wake-up indication is wake-up downlink control information, WU-DCI.

14 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication as part of a physical downlink control channel transmission that is separate from another physical downlink control channel transmission that schedules data to the wireless device.

15 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication in at least one of a narrow bandwidth and a narrow search space.

16 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication having a cyclic redundancy check, CRC, scrambled using a radio network temporary identifier associated with the wireless device.

17 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication having a cyclic redundancy check, CRC, scrambled using a radio network temporary identifier associated with a wake-up group, the wireless device being a part of the wake-up group.

18 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication as having dummy data.

19 . The method of claim 11 , wherein signaling the wake-up indication further comprises:
signaling the wake-up indication as having information about downlink data that the wireless device can expect to receive before transitioning back to the at least one of the low power mode and the connected DRX mode.

20 . The method of claim 11 , wherein the configuration of the wake-up indication indicates a timing offset between the signaled wake-up indication and a physical downlink control channel transmission that schedules data for the wireless device.

21 . A wireless device, WD, configured to communicate with a network node, the wireless device comprising processing circuitry, the processing circuitry configured to cause the wireless device to:
receive a wake-up indication in a search space in a physical downlink control channel; and transition out of at least one of a low power mode and a connected Discontinuous Reception, DRX, mode based on the wake-up indication.

22 . (canceled)

23 . (canceled)

24 . The wireless device of claim 21 , wherein the processing circuitry is further configured to cause the wireless device to receive the wake-up indication by being configured to cause the wireless device to:
receive the wake-up indication as part of a physical downlink control channel transmission that is separate from another physical downlink control channel transmission that schedules data to the wireless device.

25 .- 28 . (canceled)

29 . The wireless device of claim 21 , wherein the received wake-up indication includes information about downlink data that the wireless device can expect to receive before transitioning back to the at least one of the low power mode and the connected DRX mode.

30 . (canceled)

31 . A network node configured to communicate with a wireless device, WD, the network node comprising processing circuitry, the processing circuitry configured to cause the network node to:
configure the wireless device with a wake-up indication, the wake-up indication configured to cause the wireless device to transition out of at least one of a low power mode or connected Discontinuous Reception (DRX) mode based on the wake-up indication; and signal the wake-up indication in a search space in a physical downlink control channel.

32 . (canceled)

33 . (canceled)

34 . The network node of claim 31 , wherein the processing circuitry is further configured to cause the network node to signal the wake-up indication by being further configured to cause the network node to:
signal the wake-up indication as part of a physical downlink control channel transmission that is separate from another physical downlink control channel transmission that schedules data to the wireless device.

35 .- 38 . (canceled)

39 . The network node of claim 31 , wherein the processing circuitry is further configured to cause the network node to signal the wake-up indication by being further configured to cause the network node to:
signal the wake-up indication as having information about downlink dat

Assignees

• Ericsson Telefon Ab L M

Inventors

• Reial Andres
• Maleki Sina
• Sui Yutao
• Rune Johan
• Andgart Niklas

Classifications

• H04W72/23

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

• Y02D30/70

  in wireless communication networks · CPC title

• H04W52/0212

  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

• H04W52/0235 Primary

  where the received signal is a power saving command · CPC title