US 12,114,249 B2
Method for identification of traffic suitable for edge breakout and for traffic steering in a mobile network
Wenliang Xu, Shanghai (CN); Maria Luisa Mas Rosique, Tres Cantos (ES); Attila Mihály, Dunakeszi (HU); and Jan Backman, Kärna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/782,421
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Oct. 5, 2020, PCT No. PCT/IB2020/059346
§ 371(c)(1), (2) Date Jun. 3, 2022,
PCT Pub. No. WO2021/064717, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/910,767, filed on Oct. 4, 2019.
Claims priority of application No. PCT/CN2019/126159 (WO), filed on Dec. 18, 2019.
Prior Publication US 2023/0354149 A1, Nov. 2, 2023
Int. Cl. H04W 40/20 (2009.01); H04L 45/02 (2022.01); H04L 61/4511 (2022.01); H04W 28/02 (2009.01); H04W 40/24 (2009.01)
CPC H04W 40/20 (2013.01) [H04L 45/04 (2013.01); H04L 61/4511 (2022.05); H04W 28/0268 (2013.01); H04W 40/246 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method executed in a domain name system (DNS) proxy for application server (AS) discovery and traffic steering for edge computing in a mobile network, comprising:
receiving a DNS query from a user equipment (UE) with an application fully qualified domain name (FQDN);
upon determining that there is a service level agreement (SLA) in place for an application corresponding to the FQDN, obtaining a location of the UE that sent the DNS query from a control plane;
adding at least one subnet or full IP address of one or more preferred location for accessing to a data network (DN) as one or more Extension mechanisms for DNS (EDNS) client subnet (ECS) options in the DNS query;
forwarding the DNS query to a mobile network operator (MNO) DNS;
receiving a DNS response comprising an ECS option, the ECS option being tailored to a corresponding ECS option of the one or more ECS option in the DNS query;
triggering actions to set up traffic steering according to the ECS option received in the DNS response; and
removing the ECS option from the DNS response and sending the DNS response to the UE.