US 12,445,848 B2
Method and device for applying user plane security policy for PDU session in wireless communication system
Hongjin Choi, Suwon-si (KR); Duckey Lee, Suwon-si (KR); Jungje Son, Suwon-si (KR); Taehyung Lim, Suwon-si (KR); and Youngkyo Baek, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 4, 2022, as Appl. No. 17/817,630.
Claims priority of application No. 10-2021-0102804 (KR), filed on Aug. 4, 2021.
Prior Publication US 2023/0053937 A1, Feb. 23, 2023
Int. Cl. H04W 12/086 (2021.01); H04W 12/69 (2021.01); H04W 28/02 (2009.01)
CPC H04W 12/086 (2021.01) [H04W 12/69 (2021.01); H04W 28/0268 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for determining a user plane security policy for a protocol data unit (PDU) session in a wireless communication system, the method comprising:
receiving, by a session management function (SMF) managing a session for a user equipment (UE), first configuration information about a first user plane security policy of the UE from a unified data management (UDM) managing subscription information about the UE;
receiving, by the SMF, second configuration information about a second user plane security policy to be applied to a specific service data flow from a policy and control function (PCF) managing a policy and charging control (PCC) rule;
selecting, by the SMF, one of the first configuration information or the second configuration information according to priority based on service data flow identifier (SDF ID) and priority field;
selecting, by the SMF, one of selected configuration information or security policy applied to the UE according to priority based on the priority field; and
determining, by the SMF, a user plane security policy to be applied to the UE based on the selected configuration information or security policy applied to the UE according to priority.