Techniques are presented herein that support configuring a User Equipment (UE) to initiate a new Protocol Data Unit (PDU) session with an optimized User Plane Function (UPF) selection for applications that are hosted in a specific Data Network Access Identifier (DNAI) that is away from the UE’s location. Aspects of the presented techniques encompass an AM- Policy Control Function (PCF) including a subscription to a Unified Data Repository (UDR) for traffic influence data changes per application and altering the AF-provided Data Network Name (DNN) by appending DNAI information and providing the same to a UE in the UE Route Selection Policy (URSP) rules for an application identifier (AppId). Further aspects of the presented techniques encompass a Session Management Function (SMF) including support for decorated DNNs (e.g., the DNAI internet@realm may be decorated as internet.dnai-delhi@realm), extracting a DNAI from a received DNN and performing UPF selection based on the DNAI, and sending a DNAI to a SM-PCF during a SMPolicyContext Create on an N7 interface. Still further aspects of the presented techniques encompass a SM-PCF including a selection of an appropriate PDU session to handle the application policy rules based on the matching of an application's hosted DNAI and the DNAI of the PDU session that was received from a SMF. Use of the presented techniques yields a number of benefits including a separate PDU session with separate UPF in the DNAI where a service is hosted leading to an efficient transfer of data for an application with low latency. Further, the traffic for other applications continues to go through the other existing PDU sessions with a UPF that is closer to a UE’s location thus preserving the quality of service (QoS) given for those edge applications during simultaneous use. Additionally, a SMF may select a UPF based on a DNAI and have a SM-PCF select a particular PDU session for all of the policies that are related to the applications that are hosted on the DNAI.
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Mantha, Ravi Shankar and Ali, Irfan, "HOSTED SERVICES SUPPORT IN 5G NETWORKS", Technical Disclosure Commons, (April 26, 2022)