A leading American satellite TV and OTT service provider wanted to launch wholesale 5G wireless services as part of their vision to build a 100% cloud-native, open radio access network (ORAN) compliant 5G network.
Being a new entrant to the consumer wireless market, the client needed a greenfield implementation of an OSS/BSS solution aligned to its 5G network. They chose Infosys as their partner for our strong quality engineering skills, a critical requirement for this pioneering project. The project included a greenfield AWS and VMWare CNCF 5G core, and ORAN deployment.
Key challenges
- Managing the continuous discovery and constantly evolving requirements of a greenfield implementation
- Aggressive timelines due to regulatory and market requirements
- Complex business requirements for critical OSS business flows
- Need for a QA automation framework to orchestrate end-to-end flows at UI and API levels
- Need for component validation and reporting of all downstream applications for happy-path testing and fallout scenarios
- Completely automated test suite had to be executed within 30 minutes on GitLab
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The Solution
Enabling end-to-end OSS/BSS integration testing for the world’s first greenfield cloud-native solution on a 5G core network
The objective was to build a scalable automation framework with enhanced test coverage that would deliver faster turnaround time for end-to-end execution and high confidence for production deployments.
Infosys successfully deployed the solution with end-to-end OSS integration testing. It was a complex, synchronous, and asynchronous integration design for a best-of-breed commercial-off-the-shelf (COTS) and SaaS platform (SFDC, Apigee, BPI, Matrixx, DigitalRoute, ServiceNow, Nokia, IBM, Mavenir, D&G, Thales etc.).
Key highlights of the Infosys approach:
- Built and integrated modular and parameterized scripts with the CI/CD pipeline, enabling parallel test execution
- Integrated the test automation framework with a test management tool for automated defect logging and closure
- Allowed auto-fetch and auto-reserve/reuse of test data, as needed
- Deployed a real-time reporting dashboard display for drill-down reports with detailed view of test execution
- Virtualized services for over 50 interfaces to accelerate test execution even in case of unavailability of downstream systems
Achieved 100% test automation through API-UI test automation framework integration and with CI/CD pipelines
- Integrated API-UI test automation framework coupled with CI/CD pipeline to accelerate integration and end-to-end testing
- Developed automated libraries to ensure modularity of test scripts
- Executed test scripts in parallel through the pipeline
- Handled defects (logged/re-opened/closed) by scripts during run-time for failures
- Developed an auto-refresh Tableaux dashboard displaying drill-down reports with detailed views of test execution
Benefits
Market expansion – The client extended their 5G wireless services to more than 120 cities across the US as per their business vision
Fast delivery – Enabled the client to launch greenfield wireless services from discovery to delivery in an aggressive timeline of 10 months
100% quality – Achieved 100% zero-defect business process validation
Improved efficiency – Enabled nearly 90% reduction in average test execution time, which was reduced from over 4 hours to 15 minutes
Rapid automation – Achieved nearly 90% regression automation and 85% in-sprint and progressive automation
