IP Library › Granted Patent US 12,245,274
Granted Patent B2
US 12,245,274 · App. 18/057,786 · Granted Mar 4, 2025

Channel occupancy time (COT) structure indication

Inventors: Jing Sun (San Diego, CA); Ananta Narayanan Thyagarajan (Bangalore, IN); Xiaoxia Zhang (San Diego, CA); Kapil Bhattad (Bangalore, IN)
Assignee: QUALCOMM Incorporated
H04W74/0808H04W72/0446H04W72/23
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Quick Facts
Patent No.
US 12,245,274
App. No.
18/057,786
Granted
Mar 4, 2025
Kind
B2
Abstract

This disclosure provides systems, methods and apparatus for a user equipment (UE), operating in a shared spectrum in a connected state or an idle state, to receive a channel occupancy time structure information (COT-SI) which includes one or more of a COT duration, a COT end symbol, and a COT pause indication, in addition to slot format indication for one or more slots. Some aspects described herein define a hierarchical approach to COT structure information (COT-SI) signaling. For example, a UE may be configured with a set of short COT tables using remaining minimum system information (RMSI) signaling and may receive concatenation of COT-SI signaling identifying index values in a control channel corresponding to one or more of the set of COT tables. Based on receiving COT-SI signaling, the UE may communicate in accordance with an occurrence of a COT.

Claims (77)

1. A method of wireless communication performed by a user equipment (UE), comprising:

receiving information identifying a configured grant (CG) uplink (CG-UL) parameter,

wherein CG-UL is allowed if a channel occupancy time (COT) is not yet detected;

receiving a set of indicators identifying a set of parameters of the COT;

decoding at least one indicator of the set of indicators to determine at least one parameter of the set of parameters of the COT,

wherein the at least one indicator identifies a remaining COT duration at a granularity of a sub-carrier spacing reference numerology and at least one index value for a COT table, and

wherein the COT table includes:

slot format information for an entire portion of the COT, and

COT structure information identifying whether a symbol or slot is within the COT or outside the COT; and

communicating, in accordance with the at least one parameter, based on decoding the at least one indicator.

2. The method of claim 1 , wherein receiving the set of indicators comprises:

receiving, sequentially, a plurality of indicators identifying indices of a plurality of hierarchically provisioned COT tables; and

communicating in accordance with a slot format configuration determined based on the plurality of hierarchically provisioned COT tables.

3. The method of claim 1 , wherein the set of indicators is associated with a slot format indication (SFI) of a downlink control information (DCI) for one or more slots in the COT.

4. The method of claim 1 , wherein the granularity is a symbol of the sub-carrier spacing reference numerology.

5. The method of claim 1 , wherein receiving the set of indicators comprises:

receiving the set of indicators in downlink control information (DCI).

6. The method of claim 1 , wherein the sub-carrier spacing reference numerology is preconfigured by a radio resource configuration.

7. The method of claim 1 , wherein the at least one indicator includes an indication of a COT duration.

8. The method of claim 1 , wherein the set of indicators include one or more COT structure indicators (COT-SIs).

9. A user equipment (UE) for wireless communication, comprising:

first interface configured to:

obtain information identifying a configured grant (CG) uplink (CG-UL) parameter,

wherein CG-UL is allowed if a channel occupancy time (COT) is not yet detected;

obtain a set of indicators identifying a set of parameters of the COT;

a processing system configured to:

decode at least one indicator of the set of indicators to determine at least one parameter of the set of parameters of the COT,

wherein the at least one indicator identifies a remaining COT duration at a granularity of a sub-carrier spacing reference numerology and at least one index value for a COT table, and

wherein the COT table includes:

slot format information for an entire portion of the COT,

COT structure information identifying whether a symbol or slot is within the COT or outside the COT; and

the first interface or a second interface configured to:

communicate, in accordance with the at least one parameter, based on the at least one indicator being decoded.

10. The UE of claim 9 , wherein the first interface, to obtain the set of indicators, is configured to:

obtain, sequentially, a plurality of indicators identifying indices of a plurality of hierarchically provisioned COT tables; and

communicate in accordance with a slot format configuration determined based on the plurality of hierarchically provisioned COT tables.

11. The UE of claim 9 , wherein the set of indicators is associated with a slot format indication (SFI) of a downlink control information (DCI) for one or more slots in the COT.

12. The UE of claim 9 , wherein the granularity is a symbol of the sub-carrier spacing reference numerology.

13. The UE of claim 9 , wherein the first interface, to obtain the set of indicators, is configured to:

obtain the set of indicators in downlink control information (DCI).

14. The UE of claim 9 , wherein the sub-carrier spacing reference numerology is preconfigured by a radio resource configuration.

15. The UE of claim 9 , wherein the at least one indicator includes an indication of a COT duration.

16. The UE of claim 9 , wherein the set of indicators include one or more COT structure indicators (COT-SIs).

17. An apparatus of a network entity for wireless communication, comprising:

an interface configured to:

output information identifying a configured grant (CG) uplink (CG-UL) parameter,

wherein CG-UL is allowed if a channel occupancy time (COT) is not yet detected;

output a set of indicators identifying a set of parameters of the COT,

wherein at least one indicator of the set of indicators is configured to be decoded to determine at least one parameter of the set of parameters of the COT,

wherein the at least one indicator identifies a remaining COT duration at a granularity of a sub-carrier spacing reference numerology and at least one index value for a COT table, and

wherein the COT table includes:

slot format information for an entire portion of the COT,

COT structure information identifying whether a symbol or slot is within the COT or outside the COT; and

communicate, in accordance with the at least one parameter, based on the at least one indicator being decoded.

18. The apparatus of claim 17 , wherein the interface, to output the set of indicators, is configured to:

output, sequentially, a plurality of indicators identifying indices of a plurality of hierarchically provisioned COT tables; and

communicate in accordance with a slot format configuration determined based on the plurality of hierarchically provisioned COT tables.

19. The apparatus of claim 17 , wherein the set of indicators is associated with a slot format indication (SFI) of a downlink control information (DCI) for one or more slots in the COT.

20. The apparatus of claim 17 , wherein the granularity is a symbol of the sub-carrier spacing reference numerology.

21. The apparatus of claim 17 , wherein the interface, to output the set of indicators, is configured to:

output the set of indicators in downlink control information (DCI).

22. The apparatus of claim 17 , wherein the sub-carrier spacing reference numerology is preconfigured by a radio resource configuration.

23. The apparatus of claim 17 , wherein the at least one indicator includes an indication of a COT duration.

24. The apparatus of claim 17 , wherein the set of indicators include one or more COT structure indicators (COT-SIs).

25. A method of wireless communication performed by an apparatus of a network entity, comprising:

outputting information identifying a configured grant (CG) uplink (CG-UL) parameter,

wherein CG-UL is allowed if a channel occupancy time (COT) is not yet detected;

outputting a set of indicators identifying a set of parameters of the COT, at least one indicator of the set of indicators being decoded to determine at least one parameter of the set of parameters of the COT,

wherein the at least one indicator identifies a remaining COT duration at a granularity of a sub-carrier spacing reference numerology and at least one index value for a COT table, and

wherein the COT table includes:

slot format information for an entire portion of the COT,

COT structure information identifying whether a symbol or slot is within the COT or outside the COT; and

communicating, in accordance with the at least one parameter, based on the at least one indicator being decoded.

26. The method of claim 25 , wherein outputting the set of indicators comprises:

outputting, sequentially, a plurality of indicators identifying indices of a plurality of hierarchically provisioned COT tables; and

communicating in accordance with a slot format configuration determined based on the plurality of hierarchically provisioned COT tables.

27. The method of claim 25 , wherein the set of indicators include one or more COT structure indicators (COT-SIs).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 22, 2022
From: SUN, JING; THYAGARAJAN, ANANTA NARAYANAN; ZHANG, XIAOXIA; BHATTAD, KAPIL
To: QUALCOMM INCORPORATED
Reel/Frame 061856/0725 →
Priority Claims (2)
IN 201941011973 · Mar 27, 2019 · national
IN 201941046921 · Nov 18, 2019 · national
Continuity (2)
Continuation 16829872 · Mar 25, 2020
Related Publication 20230164836A1 · May 25, 2023
References Cited (29)
US 11516842B2 · Sun et al. · 2022 [cited by applicant]
US 20170048828A1 · Um et al. · 2017 [cited by applicant]
US 20180324727A1 · Zhou · 2018 [cited by applicant]
US 20190104500A1 · Reial et al. · 2019 [cited by applicant]
US 20190222357A1 · Huang et al. · 2019 [cited by applicant]
US 20200053782A1 · Zhang · 2020 [cited by examiner]
US 20200127796A1 · Li et al. · 2020 [cited by applicant]
US 20200136882A1 · Jo · 2020 [cited by examiner]
US 20200146058A1 · Xu · 2020 [cited by examiner]
US 20200267699A1 · Zeng et al. · 2020 [cited by applicant]
US 20200314902A1 · Sun et al. · 2020 [cited by applicant]
US 20210153197A1 · Huang et al. · 2021 [cited by applicant]
US 20210360698A1 · Xu et al. · 2021 [cited by applicant]
US 20210368484A1 · Xu et al. · 2021 [cited by applicant]
US 20220007361A1 · Huang et al. · 2022 [cited by applicant]
US 20220060277A1 · Wei · 2022 [cited by examiner]
US 20220131725A1 · Li · 2022 [cited by examiner]
CN 107734678A · 2018 [cited by applicant]
CN 109156014A · 2019 [cited by applicant]
TW 201836375A · 2018 [cited by applicant]
Huawei, et al., “NR Numerology and Frame Structure for Unlicensed Bands”, 3GPP TSG RAN WG1 Meeting #94, R1-1808058, 3rd Generation Partnership Project, Mobile Competence Centre, 650, Route Des Lucioles, F-06921, Sophia-… [cited by applicant]
Taiwan Search Report—TW109110196—TIPO—Oct. 30, 2023. [cited by applicant]
International Preliminary Report on Patentability—PCT/US2020/024934 The International Bureau of WIPO—Geneva, Switzerland, Oct. 7, 2021. [cited by applicant]
International Search Report and Written Opinion—PCT/US2020/024934—ISA/EPO—Jul. 9, 2020. [cited by applicant]
International Search Report and Written Opinion—PCT/US2020/024934—ISA/EPO—Jul. 26, 2021. [cited by applicant]
Motorola Mobility., et al., “Feature Lead Summary for NR-U DL Signals and Channels,” 3GPP Draft, 3GPP TSG RAN WG1 Meeting #96, R1-1903687, Feature Lead 7.2.2.1.2, 3rd Generation Partnership Project (3GPP), Mobile Compet… [cited by applicant]
Nokia, et al., “On DL Signals and Channels,” 3GPP Draft, 3GPP TSG RAN WG1 Meeting #96, R1-1903241, DL Signals and Channels NOK Revision, 3rd Generation Partnership Project (3GPP), Mobile Competence Centre, 650, Route De… [cited by applicant]
Qualcomm Incorporated: “Initial Access and Mobility Procedures for NR Unlicensed,” 3GPP Draft, 3GPP TSG RAN WG1 Meeting #96, R1-1902986, 7.2.2.2.2, Initial Access and mobility Procedures FOR NR-U, 3rd Generation Partner… [cited by applicant]
Interdigital Inc: “NR-U Frame Structure Design”, 3GPP TSG RAN WG1 Meeting #95, R1-1813217, Spokane, USA, Nov. 12-16, 2018, 5 Pages. [cited by applicant]