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Introduction

Each Service Provider (SP) needs to support a rich set of advanced 5G wireless services, such as enhanced Mobile Broad Band (eMBB), massive Internet of Things (mIoT), and Ultra-Reliable, Low-latency Communications (URLLC ), for mission critical communications.

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• The ONAP Service Designer define TOSCA templates for the reusable tasks, examples could be:
  • Create a suitably isolated network for each core network, possibly using VLAN/VXLAN within the RBS and VPN from the RBS and onwards
    (old text:  VLAN to be used for control and user data within an NSI)
  • Per CN node type: Create yet another node connected to the proper VLANtransport network
  • Per RAN resource to be shared (e.g. the EUtranCell): Reconfigure to use yet another PLMN and a specific VLAN for that PLMN
    Question: How do we address the EUtranCell – do we need to model that entity and include all provided cells in e.g. the AAI?
  • Create a CN NSSI using provided VLAN tags and PLMNI-ID value with a specified “capacity” (the “capacity” value to be used to select number of CN nodes to spin up).
    This also includes filtering or aggregation rules for DCAE to produce NSSI related FM/PM/Event data.
  • Create a RAN NSSI template using provided VLAN tags and PLMN-ID covering a specified set of cells. This also includes filtering or aggregation rules for DCAE to produce NSSI related FM/PM/Event data.
  • Create a Service NSI used to instantiate, modify, and remove “Service 2”. This also includes filtering or aggregation rules for DCAE to produce NSI related FM/PM/Event data, aggregating that data into KPI values for SLA evaluation.
    
    
• The Service/Network Operator adds (or removes) a NSI in the production environment:
  • The Service/Network Operator uses the ONAP Portal to add (or activate) a NSI
  • The ONAP Service Designer (or the Service/Network operator using the portal) publish the availability of a NSI for usage over the ONAP NBI.<Does the Service Designer create NSI = Network Slice Instance?>
    Question: What functionality do we have in e.g. AAI to control visibility of service templates, e.g. our NSI description for access over NBI?
    Question: What functionality do we have in MSO SO to execute service instantiation requests originating from NBI?
    Question: How does an external application figure out what service templates are available and what data are needed when using them? (assuming we should not ship the entire service template over NBI…)
  • An NSI related request is received over ONAP NBI (e.g. from an ordering system or operator GUI), the MSO SO applies the parameters to the NSI template and executes the request.
    Question: Any improv,ments improvments needed in the interaction between the external part and the MSO SO for starting such requests, monitor the progress of the request and reciving the result?
    
    
• The Service/Network Operator verifies reception of NSI related KPI data using the ONAP Portal.

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• How an external application, when requesting a slice (NSI), can also request KPI/SLA stats to be propagated back to the external application.
• For a network with two services beeing provided, how to install new equipment (e.g new RBSes with cells) and include these in the allready existing NSSIs RAN1 and RAN2.
  Is that a special workflow, or can the same workflow be used when extending a service as was used when deploying the service?
• For a network with a service beeing provided, how to selectively remove resorces (example: a few cells or a complete RBS) from that service.

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