Project Background
- Vendor: Leading smart home manufacturer
- Devices Tested: 120+ products (thermostats, cameras, lights)
- Protocols: Zigbee 3.0, Matter, proprietary mesh
Interoperability Challenges
Cross-Vendor Issues:
- Hue bulbs failing when paired with non-Philips hubs
- Thread border router compatibility gaps
Testing Strategy
Test Matrix Design
Combinatorial Testing:
# Example test case generation
for hub in [SmartThings, HomeAssistant, Hubitat]:
for device_type in [“Bulb”, “Sensor”, “Plug”]:
test_interaction(hub, device_type)
Optimization Statistics
Real-World Simulation
Test Environment:
- 3-story mock home with concrete/metal interference zones
- Network congestion simulation via traffic shaping
Key Findings
Zigbee Performance Degradation:
- 50 devices caused 300ms command latency
- Solution: Implemented sub-network segmentation
Business Outcomes
Certification Achieved:
- Matter 1.2 certification for all devices
- 40% reduction in interoperability support calls
