Silicon Labs has deployed and operated a 200-node Matter-over-Thread validation network, demonstrating the scalability, reliability and performance of Matter for large-scale smart building, commercial IoT and smart home applications.

This is said to highlight a key evolution in the Matter ecosystem: the industry is moving beyond proving interoperability and towards demonstrating scalability for real-world deployments. Silicon Labs’ 200-node Matter-over-Thread validation network provides evidence that Matter can support the larger, more complex environments expected in commercial buildings, multi-dwelling units and future smart home installations.

“Matter is rapidly evolving from a smart home technology into a platform capable of supporting much larger deployments,” said Daniel Cooley, chief technology officer at Silicon Labs. “This demonstrates not only that Matter-over-Thread can theoretically scale to thousands of devices, but also how Silicon Labs is helping customers deploy, manage and future-proof those networks through innovations spanning Matter, Thread and concurrent multiprotocol technologies.”

Believed to be among the largest publicly documented Matter-over-Thread performance test networks to date, the deployment was designed to evaluate how Matter performs as networks expand beyond traditional residential use cases. Unlike a controlled laboratory simulation, the network operated across Silicon Labs’ Boston Connectivity Lab and office environment, with devices distributed throughout the facility and exposed to real-world wireless conditions including active wifi, Bluetooth and Thread traffic. The network tested multicast messaging, unicast communications, commissioning workflows and long-term network stability under deployment-like conditions.

Texas-based Silicon Labs (www.silabs.com) supports the latest Matter specifications, including Matter 1.6 (iotm2mcouncil.org/iot-library/news/iot-newsdesk/matter-1-6-eases-network-administration/) capabilities that broaden device interoperability, expand supported device categories and enable new smart home and smart building experiences. Through its Matter portfolio, Silicon Labs helps developers build products that work seamlessly across major ecosystems while simplifying development, certification and deployment.

Key findings from the 200-node Matter-over-Thread validation network include:

• Successful deployment and sustained operation of a 200-node Matter-over-Thread network in a real-world office environment.
• 100% commissioning success using on-network commissioning.
• Reliable multicast and multi-hop unicast communications with mean multicast latencies as low as 87ms and less than 1% packet loss across most payload sizes.
• Consistent operation despite active wifi, Bluetooth and Thread traffic, with no specialised topology engineering required.
• Validation that Matter-over-Thread can support commercial-scale lighting, building automation and large IoT deployments.

The 200-node validation network was built using the Open Thread Border Router (OTBR) implementation, which provided the Thread network infrastructure used to commission and manage devices participating in the test. As Matter-over-Thread deployments scale, border routers play a critical role in securely connecting Thread devices to controllers, cloud services and broader IP networks. Silicon Labs provides developers with OTBR options and development resources that help simplify deployment of large Matter networks.

The complete Matter Large Network Performance report is available at: www.silabs.com/wireless/matter/matter-over-thread-large-network-performance-testing.