US 12,439,465 B2
Session identifier handling for co-located user plane gateways
Miguel Angel Muñoz de la Torre Alonso, Madrid (ES); and Carlos Jimenez Cordon, Madrid (ES)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/922,190
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jul. 28, 2020, PCT No. PCT/EP2020/071210
§ 371(c)(1), (2) Date Oct. 28, 2022,
PCT Pub. No. WO2022/002419, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 20382579 (EP), filed on Jun. 30, 2020.
Prior Publication US 2023/0180311 A1, Jun. 8, 2023
Int. Cl. H04W 76/12 (2018.01); H04W 76/11 (2018.01); H04W 88/16 (2009.01)
CPC H04W 76/12 (2018.02) [H04W 76/11 (2018.02); H04W 88/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A network node comprising:
a processor and a memory, the memory comprising instructions executable by the processor whereby the network node is configured to:
operate as a first Gateway (GW) in a User Plane (UP) of an Evolved Packet Core (EPC) with Control and User Plane Separation (CUPS);
receive a data packet;
forward the data packet to a second GW in the UP, the second GW being colocated with the first GW;
provide, to the second GW, a session identifier of a first session established between a third GW in a Control Plane (CP) of the EPC and the second GW;
match the received data packet with a second session established between a fourth GW in the CP and the first GW, the fourth GW having a communication interface to the third GW;
select at least one Packet Detection Rule (PDR) associated with the matching second session;
obtain the session identifier of the first session based on the selected PDR and from at least one Forwarding Action Rule (FAR) associated with the selected PDR; and
forward the data packet in accordance with the at least one FAR, the at least one FAR not including an Outer Header Creation Information Element (OHC-IE).