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Keysight Enables Fii to Earn Outdoor Open Radio Unit Certificate of Conformance

  • Solution allows Fii to become first manufacturer to validate an outdoor Open Radio Unit against O-RAN ALLIANCE conformance test specifications
  • Conformance testing solution emulates control, user, synchronization, and management planes to support validation of outdoor Open Radio Unit

Keysight Technologies, Inc. (NYSE: KEYS) has enabled Foxconn Industrial Internet (Fii) to become the first manufacturer to obtain a Certificate of Conformance for an outdoor Open Radio Unit (O-RU) through the O-RAN ALLIANCE’s Certification and Badging program. Fii’s O-RU was validated with the Keysight Open RAN Studio solution.

By separating software from hardware through open interfaces and virtualization, Open RAN network architectures offer mobile operators increased flexibility and agility while reducing costs and enhancing security. To ensure interoperability among Open RAN equipment, the O-RAN ALLIANCE established its Certification and Badging program allowing manufacturers to verify products are compliant with O-RAN specifications by using O-RAN conformance test specifications covering the control, user, synchronization, and management (CUSM) planes.

The Keysight Open RAN Studio enabled Fii to verify its O-RU conformance by supporting emulation and analysis of all four planes, from fronthaul Ethernet to the radio frequency (RF) air interface. In the case of the synchronization plane (S-Plane), the solution allowed Fii to test devices under ideal time resources and apply simulated network noise, which is essential for conducting S-Plane conformance testing and certifying RAN equipment under realistic network conditions.

Fii verified their Outdoor O-RU using Keysight’s:

  • U5040BSCB Open RAN Studio to combine features on various test equipment into a single test solution, supporting high-performance Open Distributed Unit (O-DU) emulation for MIMO and massive MIMO O-RU testing and validation.
  • Time Sync Analyzer, integrated with Open RAN Studio, to emulate the O-DU for synchronization testing by generating Precision Time Protocol (PTP), Synchronous Ethernet (SyncE), and digital clocks with built-in impairment for realistic testing while analyzing clock quality.

The Keysight Open RAN Studio, integrated with Keysight’s newly launched Time Sync Analyzer, simplifies testing by combining O-DU emulation and S-Plane impairment into a single solution. Designed for 5G O-RU testing, the solution meets the specifications set by O-RAN ALLIANCE and provides powerful and user-friendly capabilities for O-RU testing. Open RAN Studio is a part of the comprehensive Keysight Open RAN Architect (KORA) portfolio.

Kevin Liu, Vice President for Fii, said: “We are delighted to be the first in the world to receive the O-RU Certificate of Conformance for an Outdoor Open Radio Unit. Keysight’s test solution has enabled us to take a significant step toward the commercial deployment of O-RUs.”

Peng Cao, Vice President and General Manager for Keysight Wireless Test Group, said: “As a member of the O-RAN Alliance, Keysight will continue to work at the forefront of O-RAN technology adoption and commercial deployment. We are excited to enable milestones like Fii’s Outdoor O-RU Certificate of Conformance.”

About Keysight Technologies

At Keysight (NYSE: KEYS), we inspire and empower innovators to bring world-changing technologies to life. As an S&P 500 company, we’re delivering market-leading design, emulation, and test solutions to help engineers develop and deploy faster, with less risk, throughout the entire product lifecycle. We’re a global innovation partner enabling customers in communications, industrial automation, aerospace and defense, automotive, semiconductor, and general electronics markets to accelerate innovation to connect and secure the world. Learn more at Keysight Newsroom and


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