Shared channel occupancy time operation

Patent metadata

Field	Value
Publication number	US-12376151-B2
Application number	US-202017635189-A
Country	US
Kind code	B2
Filing date	Aug 11, 2020
Priority date	Aug 13, 2019
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A wireless transmit/receive unit (WTRU) may monitor LBT subbands to determine when a COT is activated. A WTRU may vary monitoring based on whether the WTRU received a full or partial COT structure. A WTRU may interpret a scheduling grant based on the set of acquired LBT subbands. A WTRU may determine a channel access priority (CAP) associated with a COT. A WTRU may indicate a CAP used to acquire a COT. A WTRU may receive an indication of a CAP used by a network to start a COT. A WTRU may determine a logical channel restriction based on a CAP associated with the COT. A WTRU may determine whether a logical channel may be included in a transmission during a COT based on a logical channel restriction. A transmission may be during a COT via a subband(s).

First claim

What is claimed:

1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
receive an indication of a listen before talk (LBT) parameter associated with a channel occupancy time (COT)-acquirement of a base station;
determine a logical channel restriction associated with a COT based on the indication of the LBT parameter, wherein the logical channel restriction allows inclusion of data associated with a logical channel associated with a channel access priority that is higher than a channel access priority threshold associated with the COT;
determine, based on the logical channel restriction, whether data associated with a first logical channel is allowed to be included in a transmission, wherein the transmission is to be sent during the COT; and
send the transmission during the COT via a subband, wherein the transmission includes the data associated with the first logical channel if the logical channel restriction allows inclusion of the data associated with the first logical channel in the transmission.

2. The WTRU of claim 1 , wherein the logical channel restriction forbids inclusion of data associated with a logical channel associated with a channel access priority that is lower than the channel access priority threshold associated with the COT.

3. The WTRU of claim 1 , wherein the LBT parameter is a channel access priority class used to acquire the subband for the COT.

4. The WTRU of claim 3 , wherein the channel access priority threshold associated with the COT is indicated by the channel access priority class.

5. The WTRU of claim 1 , wherein the indication of the LBT parameter associated with the COT is received in a scheduling grant, wherein the scheduling grant schedules a resource used for the transmission.

6. The WTRU of claim 1 , wherein the first logical channel is multiplexed on a transport block (TB) if the first logical channel is associated with a channel access priority that is higher than the channel access priority threshold associated with the COT, wherein the TB is included in the transmission.

7. The WTRU of claim 1 , wherein the indication of the LBT parameter associated with the COT is received via a COT structure indication, wherein the processor is further configured to determine the channel access priority threshold associated with the COT based on the COT structure indication, and the logical channel restriction is determined based on the channel access priority threshold associated with the COT.

8. The WTRU of claim 1 , wherein the indication of the LBT parameter associated with the COT is received from the base station via downlink control information (DCI), wherein the processor is further configured to determine the channel access priority threshold associated with the COT based on the indication received via the DCI, and the logical channel restriction is determined based on the channel access priority threshold associated with the COT.

9. The WTRU of claim 1 , wherein the processor is further configured to:
determine a reference signal configuration; and
determine the channel access priority threshold associated with the COT based on the reference signal configuration, wherein the logical channel restriction is determined based on the channel access priority threshold associated with the COT.

10. The WTRU of claim 1 , wherein the processor is further configured to:
determine a resource that occurs during the COT, wherein the transmission is sent using the resource.

11. The WTRU of claim 1 , wherein the processor is further configured to:
determine a logical channel (LCH) priority associated with the first logical channel; and
determine whether first the logical channel is associated with a channel access priority that is higher than the channel access priority threshold associated with the COT based on the LCH priority associated with the first logical channel and the channel access priority threshold associated with the COT, wherein the determination of whether the data associated with the first logical channel is allowed to be included in the transmission by the WTRU during the COT is based on the determination of whether the first logical channel is associated with the channel access priority that or higher than the channel access priority threshold associated with the COT.

12. A method comprising:
receiving an indication of a listen before talk (LBT) parameter associated with a channel occupancy time (COT)-acquirement of a base station;
determining a logical channel restriction associated with a COT based on the indication of the LBT parameter, wherein the logical channel restriction allows inclusion of data associated with a logical channel associated with a channel access priority that is higher than a channel access priority threshold associated with the COT;
determining, based on the logical channel restriction, whether data associated with a first logical channel is allowed to be included in a transmission, wherein the transmission is to be sent during the COT; and
sending the transmission during the COT via a subband, wherein the transmission includes the data associated with the first logical channel if the logical channel restriction allows the inclusion of the data associated with the first logical channel in the transmission.

13. The method of claim 12 , wherein the logical channel restriction forbids inclusion of data associated with a logical channel associated with a channel access priority that is lower than the channel access priority threshold associated with the COT.

14. The method of claim 12 , wherein the LBT parameter is a channel access priority class used to acquire the subband for the COT.

15. The method of claim 12 , wherein the indication of the LBT parameter associated with the COT is received in a scheduling grant, wherein the scheduling grant schedules a resource used for the transmission.

16. The method of claim 12 , wherein the first logical channel is multiplexed on a transport block (TB) if the first logical channel is associated with a channel access priority that is higher than the channel access priority threshold associated with the COT, wherein the TB is included in the transmission.

17. The method of claim 12 , wherein the indication of the LBT parameter associated with the COT is received via a COT structure indication, wherein the method further comprises determining the channel access priority associated with the COT based on the COT structure indication, and the logical channel restriction is determined based on the channel access priority threshold associated with the COT.

18. The method of claim 12 , wherein the indication of the LBT parameter associated with the COT comprises one or more of a COT structure indication received via downlink control information (DCI) or a reference signal configuration.

19. The method of claim 12 , further comprising determining a resource that occurs during the COT, wherein the transmission is sent using the resource.

20. The method of claim 12 , further comprising:
determining a logical channel (LCH) priority associated with the first logical channel; and
determining whether the first logical channel is associated with a channel access priority that is higher than the channel access priority threshold associated with the COT based on the LCH priority associated with the first logical channel and the channel access priority threshold associated with the COT, wherein the determination of whether the data associated with the first logical channel is allowed to be included i

Assignees

• Interdigital Patent Holdings Inc

Inventors

• Tooher J Patrick
• El Hamss Aata
• Marinier Paul
• Alfarhan Faris

Classifications

• H04W72/56 Primary

  based on priority criteria · CPC title

• H04W72/23

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

• H04W72/0453

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

• H04W72/569

  of the traffic information · CPC title

• H04L1/1887

  Scheduling and prioritising arrangements · CPC title