IP Library Granted Patent US 12,167,455
Granted Patent B2
US 12,167,455 · App. 17/635,807 · Granted Dec 10, 2024

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

Inventors: Hazhir Shokri Razaghi (Solna, SE); Min Wang (Lulea, SE); Reem Karaki (Aachen, DE); Stephen Grant (Pleasanton, CA); Iana Siomina (Taby, SE); Tai Do (Lund, SE); Yuhang Liu (Lund, SE); Havish Koorapaty (Saratoga, CA); Sorour Falahati (Stockholm, SE); Jung-Fu Cheng (Fremont, CA)
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
H04W74/0816H04W72/0453H04W74/006H04W74/0866
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Quick Facts
Patent No.
US 12,167,455
App. No.
17/635,807
Granted
Dec 10, 2024
Kind
B2
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 ).

Claims (48)

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 claim 21 , wherein, responsive to determining that the corresponding frequency resource is not available for transmission/reception, the wireless device does not monitor the frequency resource.

33. The wireless device of claim 21 , further configured to:

determine that the SFI field corresponds to a reserved value in a frequency resource configuration; and

determine a number of slots for which the frequency resource is unavailable in accordance with the reserved value.

34. A network node comprising a radio interface and processing circuitry configured to:

generate 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

transmit the generated DCI message to the one or more wireless devices.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2024
From: SHOKRI RAZAGHI, HAZHIR; DO, TAI; GRANT, STEPHEN; SIOMINA, IANA; WANG, MIN; KARAKI, REEM; LIU, YUHANG; KOORAPATY, HAVISH; FALAHATI, SOROUR; CHENG, JUNG-FU
To: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Reel/Frame 066035/0486 →
Continuity (2)
Provisional Application 62888215 · Aug 16, 2019
Related Publication 20220295560A1 · Sep 15, 2022