US 12,425,890 B2
Method for reporting channel failure
Faris Alfarhan, Montreal (CA); and J. Patrick Tooher, Montreal (CA)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Appl. No. 17/762,810
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
PCT Filed Sep. 30, 2020, PCT No. PCT/US2020/053401
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/067354, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/908,832, filed on Oct. 1, 2019.
Prior Publication US 2022/0400396 A1, Dec. 15, 2022
Int. Cl. H04W 24/08 (2009.01); H04W 16/14 (2009.01); H04W 24/10 (2009.01); H04W 72/20 (2023.01); H04W 74/0808 (2024.01)
CPC H04W 24/08 (2013.01) [H04W 24/10 (2013.01); H04W 72/20 (2023.01); H04W 74/0808 (2013.01); H04W 16/14 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A wireless transmit/receive unit (WTRU) comprising a processor, the processor configured to:
detect consistent listen before talk (LBT) failure for a first cell;
determine that uplink (UL) resources that can be used for transmitting an indication of the consistent LBT failure are available in a second cell; and
transmit a medium access control element (MAC-CE) that indicates that consistent LBT failure has occurred for the first cell, wherein the MAC-CE is transmitted using the UL resources in the second cell, and wherein the MAC-CE comprises a bitmap, the bitmap comprising a plurality of bits, wherein each bit of the plurality bits corresponds to a cell index of a respective cell, wherein a bit of the bitmap corresponding to the cell index of the first cell indicates the consistent LBT failure associated with the first cell.