US 12,446,109 B2
MUSIM SR procedure and MM congestion control
Yuan-Chieh Lin, Hsin-Chu (TW); Pan-Yen Chiang, Hsin-Chu (TW); and Chien-Chun Huang-Fu, Hsin-Chu (TW)
Assigned to MediaTek Inc., Hsinchu (TW)
Filed by MEDIATEK INC., Hsin-Chu (TW)
Filed on Sep. 1, 2022, as Appl. No. 17/901,844.
Claims priority of provisional application 63/249,076, filed on Sep. 28, 2021.
Prior Publication US 2023/0101341 A1, Mar. 30, 2023
Int. Cl. H04W 76/36 (2018.01); H04W 8/02 (2009.01); H04W 28/02 (2009.01); H04W 88/06 (2009.01)
CPC H04W 76/36 (2018.02) [H04W 8/02 (2013.01); H04W 28/0289 (2013.01); H04W 88/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method, comprising:
maintaining a non-access stratum (NAS) signaling connection by a user equipment (UE) in a wireless communication network, wherein the UE supports multiple universal subscriber identity module (MUSIM) and has a congestion control timer running and is in connected mode on a first USIM, wherein the congestion control timer is T3346 timer, and wherein a T3346 timer value is provided by the network, and wherein the UE is not allowed to send mobility management signaling requests while the T3346 timer is still running;
initiating a service request procedure by transmitting a service request message to the network on the first USIM, wherein the service request message has a request type indicating to release the NAS signaling connection on the first USIM; and
entering an idle mode on the first USIM upon the NAS signaling connection is released.