Japan's First Open RAN Unit
2025-06-06 06:40:48

JTOWER Develops Japan's First Shared Open RAN-Compatible 5G Radio Unit

JTOWER’s Innovative Leap in 5G Technology



In a groundbreaking achievement, JTOWER Inc., led by President Atsushi Tanaka and headquartered in Minato, Tokyo, has successfully developed Japan's first shared radio unit that is compliant with Open RAN and supports the 5G Sub-6 frequency band. This remarkable advancement is poised to influence the landscape of mobile communications starting from the fiscal year 2025, where interoperability with four leading mobile carriers will be progressively verified and rolled out.

What is Open RAN?


Open RAN represents a paradigm shift in wireless access networks, allowing the integration of equipment and systems from various vendors through standardized interface specifications. This open-access model broadens connectivity options, facilitating smoother integration of diverse hardware components in telecommunications.

The New Shared Radio Unit


The newly crafted shared radio unit by JTOWER is tailored to support 5G Sub-6 frequencies across the four major carriers in Japan, utilizing an Open RAN-compliant interface for flexible device connectivity. Historically, mobile carriers have needed to deploy individual base station equipment, requiring connection to shared facilities that housed antennas and relay devices. However, with this novel device, sharing extends right down to the radio units themselves. This advancement will lead to significant reductions in installation space, equipment costs, construction expenses, and power consumption—offering valuable benefits to both service-providing facilities and the mobile carriers utilizing them.

Increasing Data Traffic Calls for Enhanced Connectivity


As daily life increasingly incorporates social media, video streaming, web conferencing, and the emerging trend of utilizing generative AI, handling large volumes of data has become the norm. Consequently, the volume of data traffic—especially mobile communications—is expected to surge. To cater to this rising demand for high-speed and high-capacity transmissions, the implementation of 5G technology is critical.

JTOWER aims to enhance its network infrastructure through the deployment of this innovative device, thereby contributing to the promotion of 5G services.

Strong In-House Development Capabilities


One of JTOWER’s key strengths is its in-house technology development division, which addresses the quality requirements of mobile carriers. The development process for these new devices includes specifying and testing connections with carriers, obtaining necessary certifications, and establishing operational workflows with carriers, ensuring high communication quality crucial for supporting the telecommunications infrastructure.

Moreover, JTOWER is looking toward future advancements, such as sharing in the front haul space, and will continue aggressive technology development with a vision of expanding infrastructure sharing—thereby bolstering the growth of the telecommunications industry in Japan and beyond.

Company Overview


Founded in June 2012, JTOWER is Japan's first infrastructure-sharing company, focusing on solutions that consolidate telecommunication equipment within buildings and extending tower-sharing services for suburban and rural areas. With a commitment to providing the latest infrastructure sharing innovations, JTOWER’s vision is, 'From Japan to the world, leading the way in cutting-edge infrastructure sharing.'

For those interested in contributing to JTOWER's advancements in the industry, the company is actively recruiting talent. Check out their website for application details.

Visit JTOWER

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Topics Telecommunications)

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