US 12,328,785 B2
Handling of sidelink radio link failure
Sudhir Kumar Baghel, Hillsborough, NJ (US); Shuanshuan Wu, San Diego, CA (US); and Gabi Sarkis, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 18, 2020, as Appl. No. 16/996,078.
Claims priority of provisional application 62/893,675, filed on Aug. 29, 2019.
Prior Publication US 2021/0068187 A1, Mar. 4, 2021
Int. Cl. H04W 24/08 (2009.01); H04W 76/19 (2018.01); H04W 24/10 (2009.01); H04W 92/18 (2009.01)
CPC H04W 76/19 (2018.02) [H04W 24/08 (2013.01); H04W 24/10 (2013.01); H04W 92/18 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for wireless communications at a first user equipment (UE), comprising:
transmitting, to a second UE via a sidelink communications link, one or more sidelink messages in one or more transmission time intervals;
monitoring the sidelink communications link with the second UE for one or more feedback messages associated with the one or more sidelink messages in one or more subsequent transmission time intervals after the one or more transmission time intervals as part of a radio link monitoring procedure for the sidelink communications link;
modifying a counter based at least in part on a receipt of the one or more feedback messages from the second UE, the one or more feedback messages indicating one or more negative acknowledgements;
detecting a radio link failure of the sidelink communications link based at least in part on the one or more feedback messages from the second UE indicating the one or more negative acknowledgements and on the counter satisfying a threshold value, the threshold value being selected from a range of threshold values and being based at least in part on a value determined during establishment of the sidelink communications link, a priority level associated with data of the one or more sidelink messages transmitted via the sidelink communications link, or both, wherein the range of threshold values has an upper bound and a lower bound that are determined based at least in part on pre-configured values, the priority level associated with the data transmitted via the sidelink communications link, an application associated with the one or more sidelink messages, or any combination thereof; and
reporting the radio link failure based at least in part on the detection of the radio link failure.