US 12,323,833 B2
Enhancement for monitoring PC5 to radio resource control (RRC) configuration procedure in new radio (NR) sidelink (SL)
Lianghai Ji, Aalborg (DK); Jakob Lindbjerg Buthler, Aalborg (DK); Ling Yu, Kauniainen (FI); and Berthold Panzner, Holzkirchen (DE)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Appl. No. 17/918,015
Filed by NOKIA TECHNOLOGIES OY, Espoo (FI)
PCT Filed Apr. 9, 2021, PCT No. PCT/EP2021/059274
§ 371(c)(1), (2) Date Oct. 10, 2022,
PCT Pub. No. WO2021/204989, PCT Pub. Date Oct. 14, 2021.
Claims priority of provisional application 63/007,450, filed on Apr. 9, 2020.
Prior Publication US 2023/0129741 A1, Apr. 27, 2023
Int. Cl. H04W 24/08 (2009.01); H04W 36/00 (2009.01); H04W 92/18 (2009.01)
CPC H04W 24/08 (2013.01) [H04W 36/00837 (2018.08); H04W 92/18 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method, comprising:
determining, at a sidelink (SL) user equipment (UE), whether there is a radio problem of an interface between the sidelink (SL) user equipment (UE) and a network node;
when it is determined that there is not a radio problem of the interface, generating or constructing a radio resource control (RRC) reconfiguration sidelink message,
the method further comprising:
when it is determined that there is a radio problem of the interface between the sidelink (SL) user equipment (UE) and the network node, holding a value of the timer until the radio problem of the interface is resolved,
wherein the determining that there is the radio problem of the interface comprises detecting a physical layer problem or initiation of a connection re-establishment procedure or a handover procedure via a Uu interface,
wherein, upon a successful connection reestablishment or successful handover procedure with a new serving cell or when the sidelink (SL) user equipment (UE) enters radio resource control (RRC) idle mode without successful connection re-establishment or handover, the method comprising:
checking if the PC5 configuration acquired from the new serving cell or system information block (SIB)/pre-configuration complies with the configuration in the constructed radio resource control (RRC) reconfiguration sidelink message;
if the PC5 configuration or the system information block (SIB)/pre-configuration complies, starting the timer with the existing value again; and
if the PC5 configuration or the system information block (SIB)/pre-configuration does not comply, constructing a new radio resource control (RRC) reconfiguration sidelink message accordingly and restarting the timer with the initial value.