US 12,250,739 B2
Cellular communications system support for virtual ethernet bridge management
György Miklós, Pilisborosjenö (HU); János Farkas, Kecskemét (HU); János Harmatos, Budapest (HU); and Balázs Varga, Budapest (HU)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/598,257
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Mar. 13, 2020, PCT No. PCT/IB2020/052336
§ 371(c)(1), (2) Date Sep. 25, 2021,
PCT Pub. No. WO2020/194113, PCT Pub. Date Oct. 1, 2020.
Claims priority of provisional application 62/824,346, filed on Mar. 27, 2019.
Prior Publication US 2022/0217794 A1, Jul. 7, 2022
Int. Cl. H04W 76/12 (2018.01); H04W 76/15 (2018.01)
CPC H04W 76/12 (2018.02) [H04W 76/15 (2018.02)] 18 Claims
OG exemplary drawing
 
1. A User Equipment, UE, for a cellular communications system where the cellular communications system operates as a plurality of Ethernet network virtual bridges, the UE comprising:
one or more transmitters;
one or more receivers; and
processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the UE to:
establish a first Protocol Data Unit, PDU, session to an Ethernet network via a first User Plane Function, UPF, PDU sessions that connect to the Ethernet network via the first UPF being grouped into a first Ethernet network virtual bridge;
establish a second PDU session;
determine that both the first PDU session and the second PDU session are established to the Ethernet network via the first UPF,
in response to determining that both the first PDU session and the second PDU session are established to the Ethernet network via the first UPF, cause the UE to release one of the first PDU session and the second PDU session;
cause the UE to establish a third PDU session to the Ethernet network via a second UPF, PDU sessions that connect to the Ethernet network via the second UPF being grouped into a second Ethernet network virtual bridge; and
cause an interim bridge to be established to connect the first Ethernet network virtual bridge and the second Ethernet network virtual bridge.