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USE CASE
| 5G Service Modeling |
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| Modeling STORY Jira |
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| Architecture Sub-committee Jira tracker |
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| Base 5G Svc Modeling | 5G Use Cases in R6 Frankfurt |
BUSINESS DRIVER
This section describes Business Drivers needs.
EXECUTIVE SUMMARY - This requirement introduces platform information model enhancements to document new ISOMII experimental classes from 3GPP TS28.541, the 5G Network Resource Model (NRM). The purpose of this use case is to introduce the necessary changes into the ONAP platform architecture so that it can be prepared to accept and work with a real live 5G RAN DU (for a gNB). Presently, this may mean introducing a generic application model defined in CDS. This model would then integrate the 3GPP 5G NRM so that ONAP components and micro-services could access the information in a 3GPP format without needing to overhaul the Platform Information Model.
BUSINESS IMPACT - The requirement, is a critical because it will serve to lay the ground-work for actually "turning on" a real 5G DU (PNF) that might be installed by a Vendor.
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| PROJECT | PTL | User Story / Epic | Requirement |
| A&AI | NO IMPACT | ||
| AAF | NO IMPACT | ||
| APPC | NO IMPACT | ||
| CLAMP | NO IMPACT | ||
| CC-SDK | NO IMPACT | ||
| DCAE | NO IMPACT | ||
| DMaaP | NO IMPACT | ||
| External API | NO IMPACT | ||
| MODELING | EPIC #1 Modeling work to adapt 3GPP TS28.541 NRM | ||
Multi-VIM / Cloud | NO IMPACT | ||
| OOF | NO IMPACT | ||
| POLICY | NO IMPACT | ||
| PORTAL | NO IMPACT | ||
| SDN-C | NO IMPACT | ||
| SDC | NO IMPACT | ||
| SO | NO IMPACT | ||
| VID | NO IMPACT | ||
| VNFRQTS | NO IMPACT | ||
| VNF-SDK | NO IMPACT | ||
| CDS | NO IMPACT |
List of PTLs:Approved Projects
*Each Requirement should be tracked by its own User Story in JIRA
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Use cases define how different users interact with a system under design. Each use case represents an action that may be performed by a user (defined in UML as an Actor with a user persona).
USE CASE FUNCTIONAL DEFINITIONS
Use Case Title | Title of the Use Case5G Service Modling |
Actors (and System Components) | The list of Actors and System Components that participate in the Use Case |
Description | Short overview of the Use Case |
Points of Contact | Authors and maintainers of the Use Case. Use Case Lead, Key Use Case members and code contributors. |
Preconditions | A list of conditions that are assumed to be true before the Use Case is invoked Includes description of Information Consumed |
Triggers / Begins when | Describes the trigger for beginning the Use Case |
Steps / Flows (success) | Describes the sequence of steps and interactions that occur during the Use Case (may include: description, data exchanges, functionality, state changes) Interaction diagrams may be included or referenced |
Post-conditions | The expected results of the execution of the Use Case Includes description of Information Produced |
Alternate / Exception Paths | Description of any exceptions or special process that could occur during Use Case |
Related Use Cases | List of the Use Cases referenced by this Use Case |
Assumptions | Describes any assumptions that are made for this use case |
Tools / References / Artifacts | List of any tools or reference material associated with this Use Case as well as any JIRA trace-ability. List of any associated diagrams or modelling artifacts associated with the Use CaseN/A, Modeling work |
Description | This use case will lay the groundwork to introduce and open the discussion with the modeling sub-committee for the platform information modeling work to allow ONAP to integrate with a real "live" 5G DU Base station (PNF) The RAN (wireless) 5G base station network resource model is driven by the 3GPP standard: TS28.540 and TS28.541, the 5G NRM. This standard is used by all 5G vendors for their PNFs (DUs) which serves as a starting point to think about modeling work as it is common to all vendors. ONAP will not necessarily need to know or work with all of the ~300 parameters described in the standard, but rather should introduce a common "core" model into the ONAP platform release information model, so that other future use cases and applications can introduce model information in an orderly fashion. In R7, the OOF/SON/PCI and End-to-End Network Slicing use cases will leverage the work to introduce this common "core" model. Note that, these use cases ARE domain specific, to network wireless / radio access networks. So some thought should be given as to how to introduce domain-specific modeling into ONAP such that it can still serve many other domains with full functionality given to each of those domains. |
Points of Contact | |
Preconditions | N/A - this use case is modeling work only |
Triggers / Begins when | N/A - this use case is modeling work only |
Steps / Flows (success) | N/A - this use case is modeling work only |
Post-conditions | N/A - this use case is modeling work only |
Alternate / Exception Paths | N/A - this use case is modeling work only |
Related Use Cases | End-to-End Network Slicing Use Case: E2E Network Slicing Use Case in R7 Guilin OOF/SON/PCI Use Case: |
Assumptions | N/A - this use case is modeling work only |
Tools / References / Artifacts | N/A - this use case is modeling work only |
3GPP MODELS
GENERIC INFORMATION MODEL FOR 5G SERVICE
This information is taken from this template: Generic Information Element Template
should be copied in the Parent Page (CNF Modeling Workspace) for each Information Element to be defined.
Information Element Template (one table for each Information Element)
Information Element Name | Name of the Information Element (to be determined) (Discuss with Modeling Team) | ||||||||||||||||||||
| Points of Contact | Information Element Main Contact: Benjamin Cheung Information Modeling Contact: Benjamin Cheung guochuyi Swaminathan Seetharaman Schema Definition Contact: Benjamin Cheung | ||||||||||||||||||||
| Related Use Cases | The E2E Network Slicing Use Case WIKI: E2E Network Slicing Use Case in R7 Guilin and OOF SON PCI Use Case are related use cases that all use the 3GPP TS28.541 5G NRM: WIKI: R7 OOF SON Use Case | ||||||||||||||||||||
Participating ONAP Components | OOF SON PCI Handler Micro-Service, End to End Network Slicing (Micro services) (With the Generic Application Model) in CDS | ||||||||||||||||||||
| Related JIRA | The related Modeling JIRA is here:
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Description | The purpose of this use case is to introduce the necessary changes into the ONAP platform architecture so that it can be prepared to accept and work with a real live 5G RAN DU (for a gNB). Presently, this may mean introducing a generic application model defined in CDS. This model would then integrate the 3GPP 5G NRM so that ONAP components and micro-services could access the information in a 3GPP format without needing to overhaul the Platform Information Model. | ||||||||||||||||||||
Related Standards & Industry Activities | Related Industry Standards are here:
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Attributes | There are hundreds of parameters in the 5G NRM from the above standards. A spreadsheet of all of the parameters are compiled in this spreadsheet:
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Relationships | RUN TIME - (SO, CDS, PRH). PNFs that need to be instantiated in 5G Services (associated resources for a service). RUN TIME - (OOF SON PCI Use Case) - The PCI Micro-service will need the PCI values in the 5G NRM. | ||||||||||||||||||||
Originator | Where does this information come from? (What component initially creates it) The PNF or VNF will generate (and own) the information. This information is created outside of ONAP. The information is used by the micro-services. For example the OOF SON PCI Micro-service will use the repository of 5G Data from the C&PS Database.
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| Consumers | Who uses this information inside & outside of ONAP? How do they use it? RUN TIME - (OOF SON PCI Use Case) - The PCI Micro-service will need the PCI values in the 5G NRM. RUN TIME - (E2E Network Slicing Use Case) - Slicing models, objects and parameters from 5G NRM (TS28.541) Includes description of information consumed (whole class, specific attributes, etc) The following table shows the E2E NS parameters & classes needed:
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Producers | Who updates this information inside of ONAP? ANSWER: A user would load the Generic Application Model. CDS would update this information inside of ONAP. A user would specify a domain specific model to use. Under what conditions do they update it? ANSWER: In design time, if the designer determined that a resource will be using the Generic Application Model, they can choose to update it with a domain specific model. The detailed description of information (classes, attributes) can be obtained in the 3GPP TS28.541 standards that can be retrieved from the links above. | ||||||||||||||||||||
Steward | Where will this information stored and maintained? ANSWER: This model information would become a part of the CDS repository. During design time, CDS would be used to load a domain specific model | ||||||||||||||||||||
| Impacted APIs & Schemas | ANSWER: With the Generic Application Model Solution, CDS Platform component will need to be updated and its APIs may be impacted. CDS would load the Generic Application Model and populate it with a standard defined model, for example, the 3GPP 5G NRM. CDS would have an impacted ONAP schemas & API updated | ||||||||||||||||||||
Information Modeling Status | This is scheduled in the R7 Modeling planning page. The Wiki page: ONAP R7 Modeling High Level Requirements It is being tracked by the Modeling-369 Jira which can be found here:
Status: It is active for the current release, this use case has been accepted. The model is being developed. | ||||||||||||||||||||
Schema Definition Status | What is the status of ONAP Schema Definition activities associated with this Information Element. Please provide links to relevant wiki pages & JIRA. | ||||||||||||||||||||
ONAP Release Priority | This use case is in the R7 Release planning. The Wiki Page is at: Guilin Release Requirements It has a TSC Priority of 0 (Go) |
PRESENTATIONS & RECORDINGS
The following are presentations made for the 5G Service Model
| Presentation & Date | Recording | Forum |
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R8 Presentation | Honolulu release - functional requirements proposed list | |
R8 Presentation | Honolulu release - functional requirements proposed list | |
Slides for R8 | Honolulu release - functional requirements proposed list | |
SUPPORTING FILES
| Topic | File |
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| 5G Service Modeling (April 2020) | |
5G Service Modeling Slides Updated
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| 3GPP TS28.541 5G NRM | |
| 5G Service Modeling Slides Updated | |
3GPP TS28.541 5G NRM Parameter Analysis | |
5G Service Modeling Slides updated from call and C&PS call | |
| slides from Sept 14 | |
MEETINGS
| Meetings | Attendees | Recording | Audio Only |
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| Modeling Sub-Committee call & discussion in Wiki: | (recording at Wiki) | (recording at Wiki) |
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AGENDA:
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| Benjamin Cheung | ||
TESTING
Current Status
Testing Blockers
- High visibility bugs
- Other issues for testing that should be seen at a summary level
- Where possible, always include JIRA links
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