Page 251 - ITU-T Focus Group IMT-2020 Deliverables

ITU-T Focus Group IMT-2020 Deliverables 3

Figure 13 – Slice Lifecycle Management Procedure

• The IMT-2020 Customer requests a slice to be provisioned with its requirements specified. The
template for the slice provision is provided by the IMT-2020 service provider as a form of IMT-2020
slice service catalogue through its service portal.

• IMT-2020 Slice Lifecycle Customer Care Support (SLMCCS) functional element receives the
customer’s request and carries it to the Slice Capacity Planning & Optimization functional element
(SCPO). SCPO then determines an optimal slice plan based on available resources which matches
customer’s request. The detailed optimization algorithms is out of scope of this document.
• Once the provisioning policy is determined, SCPO requests provisioning to Slice Provisioning (SP)
functional element. SP then performs the requested slice provisioning task. It involves various sub-
tasks. If the provisioning functionality is fully supported by SLM functional component, the whole
tasks are performed internally. If not, SP then interacts with external slice provisioning related
functional entities such as MANO Orchestrator, SDN controller, etc. When SP interacts with external
management entities, it uses External Management Entity Support (EMES) functional element. Upon
completion of the provisioning process, SP sends provision reply message to the customer via
SLMCCS. At the same time, it sends provision status Slice Resource Monitoring and Analytics (SRMA)
functional element to initiate collection and monitoring of the provisioned resources. It also sends
the status update to Slice Resource Repository (SRR) to store the provisioned resource information.

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