1- Brief Project Overview (brief as it should be known)
This use case intends to demonstrate the modeling, orchestration, assurance and optimization of end-to-end network slices, including RAN, Transport and Core slice sub-nets. This use case shall support different deployment scenarios of the Slice Management & Orchestration functions through a modular architecture and standards-based interfaces.
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, IETF, 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.
2- New component capabilities for Guilin, i.e. the functional enhancements, if applicable
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- Support of SON models and required interfaces
- Mapper service for mapping DB queries from OOF, SON-Handler MS and SDN-C to Xpath queries
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- Support of new yang models
- Align with CPS interface
- Receive CM-Notify over VES interface and process it
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- Align with CPS interface
- CM-Notify related enhancements (minor)
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- UUI
- Enhancements related to endpoints
- SO
- NSMF enhancements and NSSMF workflow enhancements for all 3 subnets (mainly fixing Guilin gaps and any minor enhancements for RAN, Core, TN for e2e slice stitching)
- Endpoints related enhancements
- RAN NSSI related enhancements (RAN)
- Reuse of TN NSSI (TN)
- Core NF config updates (Core)
- Closed Loop related enhancements (RAN)
- Support of Option 2 in RAN NSSMF
- OOF
- NST selection enhancements
- Use of endpoints for NSSI selection
- CoverageArea → TA list mapping
- TN NSSI selection enhancements (if any)
- Generic functional enhancements (Slice profile generation, etc.)
- Slice Profile decomposition (in RAN)
- NSI/NSSI selection based on resource occupancy levels (under discussion)
- DCAE
- Enhancements in PM Mapper/New MS for KPI computation
- DES for historic KPI retrieval
- Enhancements in Slice Analysis MS for Closed Loop
- Use of CPS instead of Config DB
- CCSDK/SDN-C
- Align with CPS interface
3- New or modified interfaces
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