US 12,446,008 B2
Method and apparatus for sidelink transmission in unlicensed spectrum in a wireless communication system
Chun-Wei Huang, Taipei (TW); and Ming-Che Li, Taipei (TW)
Assigned to ASUS Technology Licensing Inc., Taipei (TW)
Filed by ASUS Technology Licensing Inc., Taipei (TW)
Filed on Sep. 19, 2024, as Appl. No. 18/890,387.
Claims priority of provisional application 63/539,286, filed on Sep. 19, 2023.
Prior Publication US 2025/0097903 A1, Mar. 20, 2025
Int. Cl. H04W 72/02 (2009.01); H04W 16/14 (2009.01); H04W 74/0808 (2024.01)
CPC H04W 72/02 (2013.01) [H04W 16/14 (2013.01); H04W 74/0808 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of a first User Equipment (UE), comprising:
receiving a configuration for configuring one or more sidelink resource pools comprising a first sidelink resource pool, wherein the first sidelink resource pool is configured in a first carrier associated with or in unlicensed or shared spectrum, and the first sidelink resource pool comprises a subset of Transmission Time Intervals (TTIs) in the first carrier, and the subset of TTIs in the first carrier comprises at least two TTIs which are separated by at least a TTI for New Radio (NR) downlink or uplink, or for NR Sidelink Synchronization Signal Block (S-SSB);
receiving one or more configurations for configuring one or more thresholds for UE-to-UE Channel Occupancy Time (COT) sharing, wherein the one or more configurations are configured per carrier, wherein when both the first sidelink resource pool and a second sidelink resource pool are configured in the first carrier, the first sidelink resource pool and the second sidelink resource pool are associated with a same energy detection threshold for the UE-to-UE COT sharing;
triggering or requesting sensing-based resource selection or re-selection for performing one or more sidelink transmissions in the first sidelink resource pool, wherein one parameter is provided or determined or used to indicate a second number of consecutive TTIs being larger than one;
determining a set of candidate resources, comprising:
determining a first number of candidate resources in a resource selection window, wherein the first number of candidate resources comprises only candidate resources where each candidate resource starts in a TTI associated with the first sidelink resource pool and has the second number of consecutive TTIs in the first sidelink resource pool, and the second number of consecutive TTIs are consecutive in physical TTIs; and
determining the set of candidate resources from the first number of candidate resources, wherein a third number of candidate resources in the set of candidate resources is larger than or equal to a percentage of the first number of candidate resources;
selecting one or more resources, from the set of candidate resources, for sidelink transmission in the first sidelink resource pool;
performing, if COT sharing information is received from a second UE in the second sidelink resource pool and remaining TTIs in a second COT according to the COT sharing information comprises the at least one of the selected one or more resources, a channel access procedure according to the energy detection threshold for the UE-to-UE COT sharing; and
performing a sidelink transmission on at least one of the selected one or more resources.