US 12,408,072 B2
Methods and apparatuses directed to non-access stratum procedures in connection with layer 2 relaying
Saad Ahmad, Montreal (CA); Behrouz Aghili, Commack, NY (US); Xiaoyan Shi, Westmount (CA); Samir Ferdi, Kirkland (CA); and Michelle Perras, Montréal (CA)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Appl. No. 17/925,501
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
PCT Filed May 21, 2021, PCT No. PCT/US2021/033603
§ 371(c)(1), (2) Date Nov. 15, 2022,
PCT Pub. No. WO2021/237058, PCT Pub. Date Nov. 25, 2021.
Claims priority of provisional application 63/028,554, filed on May 21, 2020.
Prior Publication US 2023/0189059 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 28/02 (2009.01); H04W 40/22 (2009.01); H04W 76/23 (2018.01)
CPC H04W 28/0289 (2013.01) [H04W 40/22 (2013.01); H04W 76/23 (2018.02)] 16 Claims
OG exemplary drawing
 
1. A method, implemented in a first wireless transmit/receive unit (WTRU), the method comprising:
receiving, from a second WTRU, a first sidelink transmission comprising a first link release message, wherein the first link release message comprises a first backoff timer value and a cause value indicating congestion;
releasing the connection with the second WTRU and initiate a backoff timer associated with the second WTRU based on the received first backoff timer value;
determining to connect to a third WTRU based on a second sidelink transmission from the third WTRU;
establishing a sidelink connection to the third WTRU;
receiving, from the third WTRU, a third sidelink transmission comprising a second link release message;
releasing the connection with the third WTRU;
determining to connect to a fourth WTRU based on a fourth PC5 sidelink transmission from the fourth WTRU; and
on condition that the fourth WTRU is the same WTRU as the second WTRU, refraining from establishing a sidelink connection to the second WTRU on condition that the backoff timer associated with the second WTRU has not expired.