US 11,743,944 B2
LBT parameters for uplink in unlicensed spectrum
Havish Koorapaty, Saratoga, CA (US); Sorour Falahati, Stockholm (SE); and Jung-Fu Cheng, Fremont, CA (US)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Aug. 2, 2021, as Appl. No. 17/391,610.
Application 17/391,610 is a continuation of application No. 16/099,272, granted, now 11,083,017, previously published as PCT/IB2017/052646, filed on May 5, 2017.
Claims priority of provisional application 62/332,846, filed on May 6, 2016.
Prior Publication US 2021/0360699 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04L 1/1607 (2023.01); H04L 1/1812 (2023.01); H04L 1/1829 (2023.01); H04W 72/0446 (2023.01)
CPC H04W 74/0816 (2013.01) [H04L 1/1692 (2013.01); H04L 1/1812 (2013.01); H04L 1/1832 (2013.01); H04W 72/0446 (2013.01); H04W 74/0808 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use in a user equipment (UE) of managing a listen-before-talk (LBT) contention window size, the method comprising:
receiving scheduling for a current burst of contiguous uplink subframes, the scheduling comprising, for each subframe of the burst of contiguous uplink subframes, an associated hybrid automatic repeat request (HARQ) process identifier and an associated new data indicator (NDI);
determining a reference subframe based on a previously-scheduled burst of contiguous uplink subframes, the reference subframe associated with a reference HARQ process identifier; and
when the UE determines the HARQ process identifier associated with at least one of the subframes of the current scheduled burst of contiguous uplink subframes matches the reference HARQ process identifier and the associated NDI indicates new data, resetting the LBT contention window size to a minimum value.