US 12,231,875 B2
Establishing a protocol data unit session
Monica Wifvesson, Lund (SE); and Noamen Ben Henda, Vällingby (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/436,327
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 28, 2020, PCT No. PCT/EP2020/055235
§ 371(c)(1), (2) Date Sep. 3, 2021,
PCT Pub. No. WO2020/178159, PCT Pub. Date Sep. 10, 2020.
Claims priority of provisional application 62/813,325, filed on Mar. 4, 2019.
Prior Publication US 2022/0174482 A1, Jun. 2, 2022
Int. Cl. H04W 12/033 (2021.01); H04W 12/37 (2021.01); H04W 76/15 (2018.01)
CPC H04W 12/033 (2021.01) [H04W 12/37 (2021.01); H04W 76/15 (2018.02)] 19 Claims
OG exemplary drawing
 
1. A method performed by a core network node in a core network of a wireless communication system, comprising:
receiving a first request to establish a first protocol data unit (PDU) session between a user equipment, UE and a user plane function in the core network;
generating user plane, UP, security enforcement information, to be applied to the first PDU session;
transmitting the UP security enforcement information to a radio access network (RAN) node for establishing the first PDU session;
storing the UP security enforcement information for use in establishing a subsequent PDU session for the UE, wherein the stored UP security enforcement information includes UP security setting(s) to apply;
receiving a second request to establish a second PDU session between the UE and the user plane function; and
transmitting the stored UP security enforcement information to the RAN node for establishing the second PDU session, wherein the second PDU session is established as a redundant PDU session for ultra-reliable low latency communication (URLLC) and wherein the second PDU session uses the same UP security setting(s) as the first PDU session.