Rakuten Mobile Partners with Fujitsu to Accelerate 5G Network Expansion

The RU model to be used by Rakuten Mobile, 44R21, adopts the O-RAN specifications established by the O-RAN ALLIANCE – a worldwide community promoting the development of Open RAN specifications. The RU facilitates communication between the base station's distributed unit (DU) and centralized unit (CU) via a fronthaul interface (1). It has a proven track record of interoperability with equipment from various domestic and international vendors, enabling telecommunications carriers to diversify their equipment choices and mitigate supply chain risks. Additionally, using Fujitsu's proprietary technology, the radio units are designed to be compact, lightweight and energy-efficient, thereby contributing to leaner space requirements and lower network operation costs.

The RU model to be used by Rakuten Mobile, 44R21, adopts the O-RAN specifications established by the O-RAN ALLIANCE – a worldwide community promoting the development of Open RAN specifications. The RU facilitates communication between the base station's distributed unit (DU) and centralized unit (CU) via a fronthaul interface ⁽¹⁾. It has a proven track record of interoperability with equipment from various domestic and international vendors, enabling telecommunications carriers to diversify their equipment choices and mitigate supply chain risks. Additionally, using Fujitsu's proprietary technology, the radio units are designed to be compact, lightweight and energy-efficient, thereby contributing to leaner space requirements and lower network operation costs.

The RU 44R21 base model will be showcased at MWC Barcelona 2025, the world's largest connectivity exhibition, held in Barcelona, Spain, from March 3 to 6, 2025.

Going forward, Rakuten Mobile will use its pioneering virtualization network technology and existing base station infrastructure to reduce lead times from construction to operation, ensuring cost-efficient deployments of base stations. Additionally, Rakuten Symphony will work together with Fujitsu to discuss future collaborations, aiming to drive the global rollout of these units and accelerate the worldwide adoption of Open RAN technology.

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