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Use Case Owner and Contacts:

LIN MENG  menglinyjy@chinamobile.com

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Borislav Glozman Borislav.Glozman@amdocs.com

Business Driver

Executive Summary: 5G Network Slicing is one of the key features of 5G. The essence of Network Slicing is in sharing network resources (PNFs, VNFs, CNFs) while satisfying widely varying and sometimes seemingly contradictory requirements to different customers in an optimal manner. Same network is expected to provide different Quality of Experience to different consumers, use case categories and industry verticals including factory automation, connected home, autonomous vehicles, smart cities, remote healthcare, in-stadium experience and rural broadband. An End-to-End Network Slice consists of RAN, Transport and Core network slice sub-nets. This Use Case intends to demonstrate the modeling, orchestration and assurance of a simple network slice (e.g. eMBB). While 3GPP standards are evolving and 5G RAN and core are being realized, this Use Case will start with realizing an E2E Network Slice with a simple example of a 5G RAN, Core and Transport Network Slice sub-nets. It will also align with relevant standard bodies (e.g., 3GPP, ETSI, TM Forum) as well as other open initiatives such as O-RAN where relevant, w.r.to both interfaces as well as the functional aspects.

Business Impact: Network Slicing is a feature that almost every service provider will leverage. It allows a service provider to improve their network efficiency by maximizing the network throughput more tailored to each user's use of the network. It is seen as an imperative for efficient and optimal use of their network. This will be particularly relevant as 5G is expected to have upwards of 10,000x the traffic load over 4G and 20GB peak data rates.

Business Markets: Network Slicing, for this use case, is specifically aimed at a 5G access, core and transport. In the future, this might be extended to other domains or applications such as fixed-wireless convergence, Wi-Fi access, all aspects of transport including fronthaul, or unified network management orchestration. Network Slicing functionality is what almost every wireless service provider will inevitably find valuable. The concepts and modeling work being done for Network Slicing will find applications in other areas as well. (Industries) Some applications and industries such as smart cities, remote maintenance, video streaming vs life-saving first-responder type applications will demand different requirements from Network slicing. (Markets/Regions) There are no regional specific aspects to Network Slicing.

Funding/Financial Impacts: Network slicing engenders the optimal use of resources for a Network. Thus, this represents OPEX savings for a service provider.

Organization Mgmt, Sales Strategies: There is no additional organizational management or sales strategies for this use case outside of a service providers "normal" ONAP deployment and its attendant organizational resources from a service provider.

DEVELOPMENT IMPACTS

Requirement

Jira Legacy
serverSystem Jira
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyREQ-158

PROJECTPTLUser Story / EpicRequirement
A&AI
Jira Legacy
serverSystem Jira
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyAAI-2600


No code impact foreseen for Frankfurt release. Update A&AI schema with Network Slicing model

AAF


No impact foreseen for Frankfurt release
APPC

Need to check whether this is needed.


No impact foreseen for Frankfurt
CLAMP
No impact foreseen for Frankfurt release
CC-SDK
No impact foreseen for Frankfurt release
DCAE

Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyDCAEGEN2-1878

Not included in Frankfurt scope. May be realized as a PoC, still under discussion.
DMaaP
No impact foreseen for Frankfurt release
External API

Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyEXTAPI-349

Service order API enhancements alone in scope for Frankfurt.
Integration

Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyINT-1467


MODELINGEpic #1 - Network Slicing Demo

Intention is to re-use existing constructs for Frankfurt release.

Multi-VIM /

Cloud


No impact foreseen for Frankfurt release
OOF
Jira Legacy
serverSystem Jira
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyOPTFRA-277


  • OOF shall select appropriate NST(s)
  • OOF shall select appropriate NSI(s) as well as provide recommendations for creating new NSI.
POLICY

Jira Legacy
serverSystem Jira
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyPOLICY-2056

No code impact foreseen for Frankfurt release

  • Config policy for slice allocation, slice sharing, slice sub-net allocation and slice sub-net sharing
  • Config policy for optimization constraints
PORTAL
No impact foreseen for Frankfurt release
SDN-C

Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keySDNC-915


Not in scope for Frankfurt release, may be realized as a PoC for impacts associated with RAN slice sub-net (still under discussion)

SDC

Jira Legacy
serverSystem Jira
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keySDC-2555

No code impacts for Frankfurt release
SO
Jira Legacy
serverSystem Jira
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keySO-2368


  • CSMF impacts, workflows for service instantiation, involving service decomposition, NST selection, NSI allocation trigger, service instantiation
  • NSMF impacts, workflows for NSI selection, NSI instantiation, NSSI selection, trigger for NSSI instantiation, NSI activation
  • Interface to external NSSMF
  • Store slice catalog items, update active slice inventory

(NSSMF impacts still under discussion with ArchCom, not in scope for Frankfurt release)

VID


No impact foreseen for Frankfurt release
VF-CYan Yang
Not in scope for Frankfurt release, potential NSSMF functionality under discussion
VNFRQTS
No impact foreseen for Frankfurt release
VNF-SDK
No impact foreseen for Frankfurt release
CDS
No impact foreseen for Frankfurt release
UUITao Shen

Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176
keyUSECASEUI-333

CSMF portal and NSMF portal
Runtime DB
Not in scope for Frankfurt release, as this is not yet an official ONAP component. It is intended to contain RAN slice subnet inventory (config and runtime details) beyond Frankfurt.

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