US 11,844,015 B2
UE and communication control method for establishing a PDU session in a public land mobile network
Tsuyoshi Takakura, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP); and FG Innovation Company Limited, Tuen Mun (HK)
Appl. No. 17/293,944
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP); and FG Innovation Company Limited, Tuen Mun (HK)
PCT Filed Nov. 1, 2019, PCT No. PCT/JP2019/043112
§ 371(c)(1), (2) Date May 14, 2021,
PCT Pub. No. WO2020/100636, PCT Pub. Date May 22, 2020.
Claims priority of application No. 2018-215875 (JP), filed on Nov. 16, 2018.
Prior Publication US 2022/0022128 A1, Jan. 20, 2022
Int. Cl. H04W 48/18 (2009.01); H04W 8/26 (2009.01); H04W 48/12 (2009.01); H04W 76/38 (2018.01); H04L 101/375 (2022.01)
CPC H04W 48/18 (2013.01) [H04W 8/26 (2013.01); H04W 48/12 (2013.01); H04L 2101/375 (2022.05); H04W 76/38 (2018.02)] 6 Claims
OG exemplary drawing
 
1. A user equipment (UE), the UE comprising:
one or more processors; and
at least one memory coupled to the one or more processors, wherein the at least one memory stores one or more computer-executable instructions that, when executed by the one or more processors, cause the UE to:
initiate, when a timer for Single Network Slice Selection Assistance Information (S-NSSAI) and a Data Network Name (DNN) is operating, an Evolved Packet System (EPS) Session Management (ESM) procedure in the EPS by using an Access Point Name (APN), wherein the APN is the same as the DNN;
receive a value of the timer in a Protocol Data Unit (PDU) session establishment reject message; and
forgo transmitting a new PDU session establishment request using the APN before the timer expires when another Public Land Mobile Network (PLMN) or another network (NW) slice that is not related to a PDU session is selected.