The document discusses ONAP's positioning and activities related to edge computing, 5G, and distributed management. Near-term ONAP activities include supporting 5G network slicing and fine-grained placement of network functions for applications like C-RAN. ONAP is also working on architectures that allow certain management functions like analytics to be distributed to the edge to address requirements around bandwidth, resiliency, and real-time service assurance.

1. ONAP Edge, 5G and Beyond
Ramki Krishnan, VMware
On behalf of the ONAP Edge Automation WG & 5G Use Case Team

2. ONAP Edge Automation WG Participation

3. ONAP 5G Use Case Participation
And Others

4. Agenda
• ONAP Edge Positioning
• Key Near-term ONAP Activities
- 5G – Direct Impact on Edge
• Network Slicing
- Edge - Network (4G, 5G, Fixed etc.), Apps (MEC etc.)
• Fine Grained Placement for C-RAN and Beyond
• Distributed Management (Analytics etc.)

5. ONAP Edge Positioning
ONAP Central
Study usage of MobileEdgeX/EVE vs
Enhance ONAP
Adapted from Akraino Blueprint:
Link: https://wiki.akraino.org/display/AK/Akraino+Network+Cloud+Blueprint+-+Reference+Architecture?preview=/1147251/1147516/image2018-8-9_16-32-22.png
Distributed Mgmt.
(ONAP/3rd Party)
Components

6. ONAP Near-term Activities Mapping
5G
Application
Ecosystem
UE/CPE
RAN Network Slice Segment (NSSIs) Transport Slice Segments (NSSIs) Core Slice Segments (NSSIs)
RAN Abstraction Model Transport Abstraction Model Core Abstraction Model
Mobile Slice Services (e.g. eMBB, Massive IoT, Mission-critical IoT)
ONAP
Management - Design
ONAP
Management - Runtime
E2E Slice Instances (NSIs)
RU DU CU-UP
Edge Cloud
CU-CP-H
CU-CP-L
Front Haul Mid Haul Back Haul
Centralized
Cloud
Disaggregated Core
UPF SMF UDM AUSF
AMF PCF NSSF NRF
Internet
External Content
Ref: https://wiki.onap.org/display/DW/5G+-+Slicing
5G Network Slicing
Fine Grained
Placement for
C-RAN etc.
Distributed Mgmt. (Analytics etc.)

7. 5G Network Slice Lifecycle Flow
Instantiating Slice Subnet or E2E Slice
▪Select E2E Slice Profile or Slice Subnet
Profile / template to Instantiate
▪Identify resources requirements (Radio,
transport, core), reservation mode
(shared, reserved exclusively, right to
preempt, etc.)
▪Etc.
Front-end (or using APIs) Service Orchestrator
Controller
RU DU CU-UP
Edge Cloud
CU-CP
Front Haul Mid Haul Back Haul
Centralized Cloud
Internet
External
Content
Disaggregated Core
UPF SMF UDM AUSF
AMF PCF NSSF NRF
▪Orchestrator executes Slice Subnet E2E
Slice Instantiation or Modification recipe
(Could be recursive)
▪Pass configuration specifications, as per
abstraction standards, to RAN controller
for radio slice segment creation
▪Etc.
Analytics (DCAE)
Inventory (A&AI)
Policy
▪Maintain inventory of instantiated slice
subnets, E2E slices, their states and their
hierarchical relationship
▪Support closed loop corrective action
for Slice / slice subnet SLA violations
▪Slice Aware KPI / Counter collection
▪RAN / Core NE configuration and
Transport slice subnet creation
Ref: https://wiki.onap.org/display/DW/5G+-+Slicing

8. Fine Grained Placement for C-RAN and Beyond
• C-RAN use case Example
- 5G vCU or 4G vBBU placement with a maximum of ~1ms latency from a specific site (DC)
• Problem Statement
- Current solutions allow placement only in a specific cloud region
• Reasonable starting point
- Several Distributed DCs managed by a single cloud region
- Workload placement in a specific Distributed DC
• How?
- Model each Distributed DC as a separate availability zone
• Easily realizable in the open cloud ecosystem OpenStack, K8S etc.
- Affinity/anti-affinity policies within/across VNFs
Ref.: https://wiki.onap.org/pages/viewpage.action?pageId=45306917

9. Distributed Management (ONAP/3rd Party ) Architecture
• One of the key focus areas for ONAP Architecture
- Task Force: https://wiki.onap.org/display/DW/Edge+Automation+through+ONAP+-+Distributed+Management+%28ONAP+etc.%29+components
- Edge using certain ONAP/3rd mgmt. workload functions as an Offload
• Analytics
• Closed Loop
• Orchestration
• …
- What is Offload?
• Offload is the process of moving certain functions from central to edge locations to
address various requirements such a WAN bandwidth constraint, higher resiliency, real-
time service assurance etc.
https://wiki.onap.org/display/DW/Distributed+Analytics+as+a+Service+%28Dublin+Summary%29+-+Edge+Automation

10. Distributed Mgmt. (ONAP/3rd Party ) Arch. (Analytics Example)
Third party edge workload (Analytics etc.)
ONAP
ONAP-Edge workload (Analytics etc.)
HDFS
Apache Spark
Deployment
Manager
Kafka
PNDA+
Apps
Kafka
Edge1 Edge2 Edge n Edge1 Edge2 Edge m
Distributed Deployment Manager
Analytics instance registration
managementPolicy/CLAMP
APPC Analytics App Repo &
Mapping with VNF &
Service management
Model Management
Collection & transformation
Kafka Across LAN/MAN/WAN
API (REST etc.)
Kafka
Broker
ONAP Normalizer &
Dispatcher
Analytics Application/Framework are packaged
together
Cloud Infra & VNF Event/Alert/Alarm/Fault Normalization (Multi Cloud Micro Services)
VNF/App Event/Alert/Alarm/Fault Normalization
Kafka Client based Dispatcher
https://wiki.onap.org/display/DW/Distributed+Analytics+as+a+Service+%28Dublin+Summary%29+-+Edge+Automation