US 12,382,534 B2
User equipment and method for multi-SIM operation
Hung-Chen Chen, Taipei (TW); Mei-Ju Shih, Taipei (TW); and Yung-Lan Tseng, Taipei (TW)
Assigned to SHARP KABUSHIKI KAISHA, Osaka (JP)
Appl. No. 17/791,388
Filed by SHARP KABUSHIKI KAISHA, Osaka (JP)
PCT Filed Jan. 21, 2021, PCT No. PCT/CN2021/073119
§ 371(c)(1), (2) Date Jul. 7, 2022,
PCT Pub. No. WO2021/147958, PCT Pub. Date Jul. 29, 2021.
Claims priority of provisional application 62/963,720, filed on Jan. 21, 2020.
Prior Publication US 2023/0047213 A1, Feb. 16, 2023
Int. Cl. H04W 8/18 (2009.01); H04W 8/22 (2009.01); H04W 36/14 (2009.01); H04W 36/22 (2009.01); H04W 60/00 (2009.01); H04W 60/06 (2009.01); H04W 68/02 (2009.01); H04W 68/12 (2009.01); H04W 74/00 (2009.01); H04W 74/02 (2009.01); H04W 76/10 (2018.01); H04W 76/25 (2018.01); H04W 76/27 (2018.01); H04W 76/30 (2018.01); H04W 84/02 (2009.01); H04W 88/06 (2009.01); H04W 88/10 (2009.01); H04W 92/02 (2009.01); H04W 92/10 (2009.01)
CPC H04W 76/27 (2018.02) [H04W 8/18 (2013.01); H04W 8/22 (2013.01); H04W 36/14 (2013.01); H04W 36/22 (2013.01); H04W 60/005 (2013.01); H04W 60/06 (2013.01); H04W 68/02 (2013.01); H04W 68/12 (2013.01); H04W 74/002 (2013.01); H04W 74/02 (2013.01); H04W 76/10 (2018.02); H04W 76/25 (2018.02); H04W 76/30 (2018.02); H04W 84/02 (2013.01); H04W 88/06 (2013.01); H04W 88/10 (2013.01); H04W 92/02 (2013.01); H04W 92/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a multi-subscriber identity module (multi-SIM) operation performed by a user equipment (UE), the method comprising:
connecting to a first network associated with a first Universal Subscriber Identity Module USIM) of the UE;
receiving, from the first network, a first configuration indicating that the UE is allowed to transmit an assistance information message for switching to a second network associated with a second USIM of the UE, the first configuration further including a configuration of a timer;
transmitting, to the first network, the assistance information message, the assistance information message comprising information of a preferred Radio Resource Control (RRC) state associated with the first network to indicate that the UE prefers to switch from an RRC_CONNECTED state associated with the first network to the preferred RRC state; and
starting the timer upon transmitting the assistance information message.