- ONAP Optimization Framework (OOF) provides a policy-driven and model-driven framework for creating optimization applications for a broad range of use cases
- For Casablanca, OOF enhancements include formulation and solving of optimization problems
- Following sequence flows and test cases are for an OOF enhancement proposal for Casablanca in the context of a Proof of Concept (POC)
for Physical Cell ID (PCI) Optimization
- PCI Optimization is a well-understood problem
- The reading/writing of the Physical Cell ID (PCI) configuration parameter has been included in SDNC(R) POC - Objective of the POC is to demonstrate disaggregation of the PCI SON functionality, and the data flows needed to implement this in ONAP using OOF
- We envision a new PCI-Handler Microservice to facilitate the data flow and trigger mechanism
- The focus of the POC is on data flow and interfaces, and the role of OOF, PCI-Handler-MS, SDNC(R) Controller and Policy etc
- Objective is to incorporate an algorithm in ONAP using OOF, not to develop an algorithm
- The POC will help to develop details of ONAP interfaces and flows needed:
(a) to get the required network data to OOF for optimization,
(b) determine the recommended reconfiguration, and
(c) execute it using the Controller
Sequence Flows for OOF based PCI Optimization based on 3 different triggers:
(Flow A) - From SO (new cell addition), only PCI recommendation, no Controller action
(Flow B) - From SDNC(R) (RAN config change), includes Controller action
(Flow C) - From DCAE (alarm/fault), includes Controller action and DCAE Collector
Flow A: PCI Optimization for trigger from SO (new cell addition)
Steps for Flow A, Trigger from SO - Recommended PCI for new cell addition
Step | Component | Functionality | User Stories |
|---|---|---|---|
| Design time | |||
| 1 | SDC, CLAMP | PCI Optimization service and automated loop defined in SDC and CLAMP | |
| Deployment time | |||
| 2 | Policy, PCI-Handler-MS, OOF, SO, SDNC(R), AAI, DCAE Collector | Modules loaded with changes for PCI Optimization | |
| Run time | |||
| 3(a) | SO | SO prepares to add new cell. (? SO updates AAI with information for new cell ) | |
| 4(a) | SO, PC-Handler-MS | Request for PCI Recommendation for new cell SO requests PCI-Handler-MS to provide PCI recommendation for new cell | |
| 5 | PCI-Handler-MS, Policy | Fetch configuration policies PCI-Handler MS fetches policies that specify how PCI-Handler-MS will respond to triggers or requests from SO, from DCAE (via DMaaP), SDNC(R) (via DMaaP), PCI-Handler-MS analyzes config change to detect pre-defined signature which will trigger PCI Optimization due to config changes (e.g. Nbr list) | |
| 6 | PCI-Handler-MS, OOF | Request for PCI optimization for network region. PCI-Handler MS invokes OOF for pre-defined workflow for PCI Optimization via REST API.This call includes data for the cell and the network reqion involved. | |
| 7 | OOF, Policy | Fetch PCI optimization policies OOF fetches policies that specify how OOF will execute PCI optimization in response to PCI request for optimization | |
| 8a | OOF, AAI | Fetch Inventory data for cells in the region OOF fetches inventory and topology of cells in network region from AAI | |
| 8b | OOF, SDNC(R) | Fetch Config data for cells in the region OOF fetches PCI and Nbr List config data for cells in network region from SDNC(R) | |
| 9 | OOF, PCI-Handler-MS | Recommended PCI configuration OOF provides PCI recommendation to PCI-Handler-MS in response to the request from | |
| 10(a) | PCI-Handler-MS, SO | Recommended PCI configuration PCI-Handler-MS provides PCI recommendation to SO |
Flow A: PCI Optimization for trigger from SO (new cell addition)
Flow B: PCI Optimization for trigger from SDNC(R) - RAN Config Change
Steps for Flow B, Trigger from SDNC(R) - RAN config change
Step | Component | Functionality | User Stories |
|---|---|---|---|
| Design time | |||
| 1 | SDC, CLAMP | PCI Optimization service and automated loop defined in SDC and CLAMP | |
| Deployment time | |||
| 2 | Policy, PCI-Handler-MS, OOF, SO, SDNC(R), AAI, DCAE Collector | Modules loaded with changes for PCI Optimization | |
| Run time | |||
| 3(b) | RAN, SDNC(R) | Config change notification RAN sends notification to SDNC(R) (e.g. Nbr list change) | |
| 4(b) | SDNC(R) | Publish config data change SDNC(R) publishes config data change on DMaaP. Subscribed by PCI-Handler-MS, A&AI (and others). | |
| 5 | PCI-Handler-MS, Policy | Fetch configuration policies PCI-Handler MS fetches policies that specify how PCI-Handler-MS will respond to triggers or requests from SO, from DCAE (via DMaaP), SDNC(R) (via DMaaP), PCI-Handler-MS analyzes config change to detect pre-defined signature which will trigger PCI Optimization due to config changes (e.g. Nbr list) | |
| 6 | PCI-Handler-MS, OOF | Request for PCI optimization for network region. PCI-Handler MS invokes OOF for pre-defined workflow for PCI Optimization via REST API.This call includes data for the cell and the network reqion involved. | |
| 7 | OOF, Policy | Fetch PCI optimization policies OOF fetches policies that specify how OOF will execute PCI optimization in response to PCI request for optimization | |
| 8a | OOF, AAI | Fetch Inventory data for cells in the region OOF fetches inventory and topology of cells in network region from AAI | |
| 8b | OOF, SDNC(R) | Fetch Config data for cells in the region OOF fetches PCI and Nbr List config data for cells in network region from SDNC(R) | |
| 9 | OOF, PCI-Handler-MS | Recommended PCI configuration OOF provides PCI recommendation to PCI-Handler-MS in response to the request from | |
| 10 | PCI-Handler-MS, Policy | Recommended PCI configuration PCI-Handler-MS provides PCI recommendation to Policy | |
| 11 | Policy, SDNC(R) | PCI Configuration decisions Policy sends message to SDNC(R) with instruction for configuration changes | |
| 12 | SDNC(R), RAN | Change PCI Configuration SDNC(R) applies config changes | |
| 13 | SDNC(R), AAI | Update Inventory SDNC(R) updates inventory as needed for PCI config change |
Flow B: PCI Optimization for trigger from SDNC(R) - RAN Config Change
Flow C: PCI Optimization for trigger from DCAE (Alarm/fault)
Steps for Flow C, Trigger from DCAE Collector stream (FM Data) - Alarm condition
Step | Component | Functionality | User Stories |
|---|---|---|---|
| Design time | |||
| 1 | SDC, CLAMP | PCI Optimization service and automated loop defined in SDC and CLAMP | |
| Deployment time | |||
| 2 | Policy, PCI-Handler-MS, OOF, SO, SDNC(R), AAI, DCAE Collector | Modules loaded with changes for PCI Optimization | |
| Run time | |||
| 3(c) | RAN, DCAE Collector | Collect FM Data DCAE Collector collects FM/PM data from RAN | |
| 4(c) | DCAE Collector, PCI-Handler-MS | Publish FM Data DCAE Collector publishes FM/PM data on DMaaP. Subscribed by PCI-Handler-MS and DCAE Database | |
| 5 | PCI-Handler-MS, Policy | Fetch configuration policies PCI-Handler MS fetches policies that specify how PCI-Handler-MS will respond to triggers or requests from SO, from DCAE (via DMaaP), SDNC(R) (via DMaaP), PCI-Handler-MS analyzes config change to detect pre-defined signature which will trigger PCI Optimization due to config changes (e.g. Nbr list) | |
| 6 | PCI-Handler-MS, OOF | Request for PCI optimization for network region. PCI-Handler MS invokes OOF for pre-defined workflow for PCI Optimization via REST API.This call includes data for the cell and the network reqion involved. | |
| 7 | OOF, Policy | Fetch PCI optimization policies OOF fetches policies that specify how OOF will execute PCI optimization in response to PCI request for optimization | |
| 8a | OOF, AAI | Fetch Inventory data for cells in the region OOF fetches inventory and topology of cells in network region from AAI | |
| 8b | OOF, SDNC(R) | Fetch Config data for cells in the region OOF fetches PCI and Nbr List config data for cells in network region from SDNC(R) | |
| 9 | OOF, PCI-Handler-MS | Recommended PCI configuration OOF provides PCI recommendation to PCI-Handler-MS in response to the request from | |
| 10 | PCI-Handler-MS, Policy | Recommended PCI configuration PCI-Handler-MS provides PCI recommendation to Policy | |
| 11 | Policy, SDNC(R) | PCI Configuration decisions Policy sends message to SDNC(R) with instruction for configuration changes | |
| 12 | SDNC(R), RAN | Change PCI Configuration SDNC(R) applies config changes | |
| 13 | SDNC(R), AAI | Update Inventory SDNC(R) updates inventory as needed for PCI config change |
Flow C: PCI Optimization for trigger from DCAE (Alarm/fault)
