DCI signalling including at least one slot format indicator, SFI, field, and a frequency resource indicator field

Patent metadata

Field	Value
Publication number	US-12167455-B2
Application number	US-202017635807-A
Country	US
Kind code	B2
Filing date	Aug 15, 2020
Priority date	Aug 16, 2019
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A wireless device (110) receives a frequency resource configuration (200) from an access node (120), the access node generates downlink control information DCI (201) and transmits a control message (202) including at least one slot format indicator, SFI, field and a frequency resource indicator field. Based on the frequency resource indicator, the wireless device determines whether a particular frequency resource is available for operation (203) and whether the wireless device can receive or transmit data on said frequency resource (204, 205).

First claim

The invention claimed is:

1. A method performed by a wireless device, comprising:
configuring the wireless device with a plurality of frequency resources;
receiving a downlink control information (DCI) message including at least one slot format indicator (SFI) field and a frequency resource indicator field, wherein the SFI indicates a slot format for a corresponding frequency resource, and the frequency resource indicator indicates whether the corresponding frequency resource is available for operation, and wherein the frequency resource indicator comprises a plurality of bits wherein each bit corresponds to one of the plurality of frequency resources; and
determining whether the corresponding frequency resource is available for operation in accordance with the frequency resource indicator.

2. The method of claim 1 , wherein configuring the wireless device includes receiving configuration information from a network node.

3. The method of claim 1 , wherein the plurality of frequency resources include one or more of: a carrier, a sub-band of a carrier, a set of resource blocks (RBs) on a carrier, a listen before talk (LBT) bandwidth, and a bandwidth part (BWP).

4. The method of claim 1 , wherein the DCI message is a DCI format 2_0.

5. The method of claim 1 , further comprising, determining whether the corresponding frequency resource is available for operation during a duration of the SFI in accordance with the frequency resource indicator.

6. The method of claim 1 , wherein the DCI message further includes an associated channel occupancy time (COT) duration field.

7. The method of claim 6 , further comprising, determining whether the corresponding frequency resource is available for operation during the COT duration in accordance with the frequency resource indicator.

8. The method of claim 1 , wherein the wireless device identifies the corresponding frequency resource based at least in part on a bit position of the frequency resource indicator field in the received DCI message.

9. The method of claim 1 , wherein, responsive to determining that the corresponding frequency resource is available for operation, the wireless device monitors the frequency resource.

10. The method of claim 9 , wherein the wireless device monitors the frequency resource for a physical downlink control channel (PDCCH).

11. The method of claim 1 , wherein, responsive to determining that the corresponding frequency resource is available for operation, the wireless device receives a channel-state information reference signal (CSI-RS) on the frequency resource.

12. The method of claim 1 , wherein, responsive to determining that the corresponding frequency resource is not available for transmission/reception, the wireless device does not monitor the frequency resource.

13. The method of claim 1 , further comprising:
determining that the SFI field corresponds to a reserved value in a frequency resource configuration; and
determining a number of slots for which the frequency resource is unavailable in accordance with the reserved value.

14. A method performed by a network node, comprising:
generating a downlink control information (DCI) message including at least one slot format indicator (SFI) field and a frequency resource indicator field, wherein the SFI indicates a slot format for a corresponding frequency resource, and the frequency resource indicator indicates whether the corresponding frequency resource is available for operation, and wherein the frequency resource indicator comprises a plurality of bits wherein each bit corresponds to one of the plurality of frequency resources; and
transmitting the generated DCI message to one or more wireless devices.

15. The method of claim 14 , further comprising, configuring one or more wireless devices with a plurality of frequency resources.

16. The method of claim 15 , wherein configuring the one or more wireless devices includes transmitting configuration information.

17. The method of claim 14 , wherein the plurality of frequency resources include one or more of: a carrier, a sub-band of a carrier, a set of resource blocks (RBs) on a carrier, a listen before talk (LBT) bandwidth, and a bandwidth part (BWP).

18. The method of claim 14 , wherein the DCI message is a DCI format 2_0.

19. The method of claim 14 , wherein a bit position of the frequency resource indicator field in the received DCI message identifies a corresponding frequency resource.

20. The method of claim 14 , further comprising, transmitting a channel-state information reference signal (CSI-RS) on an available frequency resource.

21. A wireless device comprising a radio interface and processing circuitry configured to:
configure the wireless device with a plurality of frequency resources;
receive a downlink control information (DCI) message including at least one slot format indicator (SFI) field and a frequency resource indicator field, wherein the SFI indicates a slot format for a corresponding frequency resource, and the frequency resource indicator indicates whether the corresponding frequency resource is available for operation, and wherein the frequency resource indicator comprises a plurality of bits wherein each bit corresponds to one of the plurality of frequency resources; and
determine whether the corresponding frequency resource is available for operation in accordance with the frequency resource indicator.

22. The wireless device of claim 21 , wherein configuring the wireless device includes receiving configuration information from a network node.

23. The wireless device of claim 21 , wherein the plurality of frequency resources include one or more of: a carrier, a sub-band of a carrier, a set of resource blocks (RBs) on a carrier, a listen before talk (LBT) bandwidth, and a bandwidth part (BWP).

24. The wireless device of claim 21 , wherein the DCI message is a DCI format 2_0.

25. The wireless device of claim 21 , further configured to determine whether the corresponding frequency resource is available for operation during a duration of the SFI in accordance with the frequency resource indicator.

26. The wireless device of claim 21 , wherein the DCI message further includes an associated channel occupancy time (COT) duration field.

27. The wireless device of claim 26 , further configured to determine whether the corresponding frequency resource is available for operation during the COT duration in accordance with the frequency resource indicator.

28. The wireless device of claim 21 , wherein the wireless device identifies the corresponding frequency resource based at least in part on a bit position of the frequency resource indicator field in the received DCI message.

29. The wireless device of claim 21 , wherein, responsive to determining that the corresponding frequency resource is available for operation, the wireless device monitors the frequency resource.

30. The wireless device of claim 29 , wherein the wireless device monitors the frequency resource for a physical downlink control channel (PDCCH).

31. The wireless device of claim 21 , wherein, responsive to determining that the corresponding frequency resource is available for operation, the wireless device receives a channel-state information reference signal (CSI-RS) on the frequency resource.

32. The wireless device of

Assignees

• Ericsson Telefon Ab L M

Inventors

• Shokri Razaghi Hazhir
• Wang Min
• Karaki Reem
• Grant Stephen
• Siomina Iana
• Do Tai
• Liu Yuhang
• Koorapaty Havish
• Falahati Sorour
• Cheng Jung-Fu

Classifications

• H04W74/0866

  using a dedicated channel for access · CPC title

• H04W74/006

  in the downlink, i.e. towards the terminal · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/23

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

• H04L5/1469

  using time-sharing · CPC title