Study on enhancement of support for Edge Computing in 5G Core network (5GC)
The Technical Report studies and performs evaluations of potential architecture enhancements to support Edge Computing (EC) in the 5G Core network (5GC). Specifically, two objectives are included:
Objective 1: To study the potential system enhancements for enhanced Edge Computing support, including:
- Discovery of IP address of application server deployed in Edge Computing environment;
NOTE 1: This study will not consider application layer solutions.
- 5GC enhancements to support for seamless change of application server serving the UE;
- How to efficiently (with a low delay) provide local application servers with information on e.g. the QoS condition of the data path;
- Supporting for traffic steering in N6-LAN deployed in Edge Computing environment, including support for end-user traffic sent to the central N6 interface to the DN after having been processed by local application server(s);
NOTE 2: The output of the traffic steering related study should cover common N6-LAN deployment, considering the additional features for N6-LAN deployed in Edge Computing environment.
- Supporting PSA change when the application server does not support notifications of UE IP address change;
- Supporting I-SMF insertion or reselection based on AF request to route the traffic to application server deployed in Edge Computing environment.
Objective 2: To provide deployment guidelines for typical Edge Computing use cases, e.g. URLLC, V2X, AR/VR/XR, UAS, 5GSAT, and CDN etc, including:
- Deployment guidelines based on the existing Rel-15/16 Edge Computing enablers, such as LADN, in TS 23.501 [2] and TS 23.502 [3];
- Additional deployment guidelines related to any 5GS Edge Computing enhancements defined as part of the first objective.