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User Plane Function Distribution and Local Break-Out


  • UPF Distribution/Shunting capability -- distributing User Plane Functions in the appropriate Data Center Facilities with qualified compute hardware for routing the traffic to desired applications and network/processing functions/applications.
  • Local Break-Out (LBO) – Examples: video traffic offload, low latency services, roaming optimization.

The UPF Distribution use case distinguishes between two scenarios:

  • UPF Interconnection. The UPF/SPGW-U is located in the MNO network and needs to be interconnected on the N6/SGi interface to 3PE and/or PCE/PCC.
  • UPF Placement. The MNO wants to instantiate a UPF/SPGW-U in a location that is different from their network (e.g. Customer Premises, 3rd Party Data Center)

UPF Interconnection Scenario

Assumptions:

  • MNO hosts UPF/SPGW-U in their network.
  • MNO provisions all UPF functions.
  • MNO may request UPF Interconnection for Sgi/N6 interface in a required Metro to 3PE/PCE via APIs (on P2)
  • Bare Metal Orchestration Provider and Interconnect Provider expose Data Center Location / Metro to PCEI Enabler via APIs (on P3 and P4)
  • 3PE and PCE providers expose Data Center Location / Metro to PCEI Enabler via APIs (on P5 and P8/P7)
  • PCEI Enabler may request Bare Metal Orchestration for Distributed UPF via APIs (on P3)
  • PCEI Enabler may request Interconnect for MNO UPF (L2/L3) via APIs (on P4)
  • PCEI Enabler may request PCC/PCE and/or 3PE Controller to instantiate workload instances for LBO processing via APIs (on P8/P5)

UPF Interconnection (N6/SGi) Call Flow Sketch

Notes:

  • Does not include interconnect to 3PE/PCE/PCC - to be added
  • Does not include 3PE HW Orchestration - to be added
  • Does not include UPF LBO Orchestration - to be added
  • Does not include 3PE/PCE Workload Orchestration - to be added


UPF Placement Scenario

Assumptions:

  • MNO supports CUPS (5G NSA) and/or UPF (5G SA).
  • MNO may request UPF Placement / Metro, and 3PE/PCE Access / Metro, via APIs (on P2)
  • Bare Metal Orchestration Provider and Interconnect Provider expose Data Center Location / Metro to PCEI Enabler via APIs (on P3 and P4)
  • 3PE and PCE providers expose Data Center Location / Metro to PCEI Enabler via APIs (on P5 and P8/P7)
  • PCEI Enabler may request Bare Metal Orchestration for Distributed UPF via APIs (on P3)
  • PCEI Enabler may request Bare Metal Orchestration for 3PE via APIs (on P3)
  • PCEI Enabler may request Interconnect for Distributed UPF N3/S1 and N6/SGi traffic (L2/L3) via APIs (on P4)
  • PCEI Enabler may expose UPF management access to MNO
  • MNO may provision the Distributed UPF over management access
  • PCEI Enabler may provision UPF connectivity and LBO configuration (based on the UPF provisioning model) over P2’ using appropriate protocols
  • PCEI Enabler may request PCC/PCE and/or 3PE Controller to instantiate workload instances for LBO processing via APIs (on P8/P5)



UPF Placement Call Flow Sketch

Notes:

  • Does not include interconnect to 3PE/PCE/PCC - to be added
  • Does not include 3PE HW Orchestration - to be added
  • Does not include UPF LBO Orchestration - to be added
  • Does not include 3PE/PCE Workload Orchestration - to be added


UPF Placement Options


API Structure

To be added

UPF  Interconnect Options


UPF Hardware Selection / Orchestration

UPF Configuration Orchestration - Local Break-Out Options


3PE/PCE Workload Instance Distribution

To be added

Location Services

  • Location Services -- location of a specific UE, or identification of UEs within a geographical area, facilitation of server-side application workload distribution based on UE and infrastructure resource location.

Assumptions:

  • MNO provides a Location Service (LS) compliant with OMA Zonal Presence API (OMA-TS-REST_NetAPI_ZonalPresence)
  • MNO may expose the Location Service via the Network Exposure Function (NEF)
  • A Public Cloud Edge (PCE) instance is associated with a Zone (collection of Access Points such as small cells) provided by an MNO
  • A 3rd-Party Edge (3PE) instance is associated with a Zone (collection of Access Points such as small cells) provided by an MNO
  • An application/workload in the PCE requires Location Information (e.g. coordinates of the Access Point) for the UE/subscriber
  • An application/workload in the 3PE requires Location Information (e.g. coordinates of the Access Point) for the UE/subscriber
  • PCEI Enabler facilitates Zonal Presence API Request/Response routing between PCE and the MNO LS and between the 3PE and the MNO LS



User Plane Function Distribution and Local Break-Out


  • UPF Distribution/Shunting capability -- distributing User Plane Functions in appropriate Data Center Facilities on qualified compute hardware for routing the traffic to desired applications and network/processing functions/applications.
  • Local Break-Out (LBO) – Examples: video traffic offload, low latency services, roaming optimization.

The UPF Distribution use case distinguishes between two scenarios:

  • UPF Interconnection. The UPF/SPGW-U is located in the MNO network and needs to be interconnected on the N6/SGi interface to 3PE and/or PCE/PCC.
  • UPF Placement. The MNO wants to instantiate a UPF/SPGW-U in a location that is different from their network (e.g. Customer Premises, 3rd Party Data Center)

UPF Interconnection Scenario

Assumptions:

  • MNO hosts UPF/SPGW-U in their network.
  • MNO provisions all UPF functions.
  • MNO may request UPF Interconnection for Sgi/N6 interface in a required Metro to 3PE/PCE via APIs (on P2)
  • Bare Metal Orchestration Provider and Interconnect Provider expose Data Center Location / Metro to PCEI Enabler via APIs (on P3 and P4)
  • 3PE and PCE providers expose Data Center Location / Metro to PCEI Enabler via APIs (on P5 and P8/P7)
  • PCEI Enabler may request Bare Metal Orchestration for Distributed UPF via APIs (on P3)
  • PCEI Enabler may request Interconnect for MNO UPF (L2/L3) via APIs (on P4)
  • PCEI Enabler may request PCC/PCE and/or 3PE Controller to instantiate workload instances for LBO processing via APIs (on P8/P5)

UPF Interconnection (N6/SGi) Call Flow Sketch

Notes:

  • Does not include interconnect to 3PE/PCE/PCC - to be added
  • Does not include 3PE HW Orchestration - to be added
  • Does not include UPF LBO Orchestration - to be added
  • Does not include 3PE/PCE Workload Orchestration - to be added


UPF Placement Scenario

Assumptions:

  • MNO supports CUPS (5G NSA) and/or UPF (5G SA).
  • MNO may request UPF Placement / Metro, and 3PE/PCE Access / Metro, via APIs (on P2)
  • Bare Metal Orchestration Provider and Interconnect Provider expose Data Center Location / Metro to PCEI Enabler via APIs (on P3 and P4)
  • 3PE and PCE providers expose Data Center Location / Metro to PCEI Enabler via APIs (on P5 and P8/P7)
  • PCEI Enabler may request Bare Metal Orchestration for Distributed UPF via APIs (on P3)
  • PCEI Enabler may request Bare Metal Orchestration for 3PE via APIs (on P3)
  • PCEI Enabler may request Interconnect for Distributed UPF N3/S1 and N6/SGi traffic (L2/L3) via APIs (on P4)
  • PCEI Enabler may expose UPF management access to MNO
  • MNO may provision the Distributed UPF over management access
  • PCEI Enabler may provision UPF connectivity and LBO configuration (based on the UPF provisioning model) over P2’ using appropriate protocols
  • PCEI Enabler may request PCC/PCE and/or 3PE Controller to instantiate workload instances for LBO processing via APIs (on P8/P5)



UPF Placement Call Flow Sketch

Notes:

  • Does not include interconnect to 3PE/PCE/PCC - to be added
  • Does not include 3PE HW Orchestration - to be added
  • Does not include UPF LBO Orchestration - to be added
  • Does not include 3PE/PCE Workload Orchestration - to be added


UPF Placement Options


API Structure

To be added

UPF  Interconnect Options


UPF Hardware Selection / Orchestration

UPF Configuration Orchestration - Local Break-Out Options


3PE/PCE Workload Instance Distribution

To be added

Location Services

  • Location Services -- location of a specific UE, or identification of UEs within a geographical area, facilitation of server-side application workload distribution based on UE and infrastructure resource location.

Assumptions:

  • MNO provides a Location Service (LS) compliant with OMA Zonal Presence API (OMA-TS-REST_NetAPI_ZonalPresence)
  • MNO may expose the Location Service via the Network Exposure Function (NEF)
  • A Public Cloud Edge (PCE) instance is associated with a Zone (collection of Access Points such as small cells) provided by an MNO
  • A 3rd-Party Edge (3PE) instance is associated with a Zone (collection of Access Points such as small cells) provided by an MNO
  • An application/workload in the PCE requires Location Information (e.g. coordinates of the Access Point) for the UE/subscriber
  • An application/workload in the 3PE requires Location Information (e.g. coordinates of the Access Point) for the UE/subscriber
  • PCEI Enabler facilitates Zonal Presence API Request/Response routing between PCE and the MNO LS and between the 3PE and the MNO LS



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