Samsung and KDDI Validate AI-Driven Network Optimization in Japan’s 5G SA Network Trial
Samsung Electronics has successfully conducted a trial of its AI-driven RAN Speed Optimizer (RSO) on KDDI’s commercial 5G Standalone (SA) network in Japan. This collaboration, initiated in late 2025, spanned several months and showcased the potential of AI in enhancing network performance. The trial underscores the transformative impact of AI solutions on operational efficiency.
Executed in the Tokyo metropolitan area, covering urban, suburban, and rural settings, the trial utilized a 100 MHz band of 3.7 GHz TDD spectrum across hundreds of cells. This diverse environment facilitated comprehensive AI model training under real-world conditions. During peak periods, Samsung’s RSO achieved an average increase of 31% in 5G downlink throughput, with dense urban areas experiencing up to a 52% improvement. These results highlight the efficacy of AI-driven solutions in enabling precise, adaptive network optimization.
Technical Advancements
Samsung’s RSO advances network performance through cell-specific parameter optimization, departing from traditional cluster-level approaches. This AI-driven customization employs an in-house prediction model to analyze site-specific data, recommending tailored parameters for each cell. As part of the Samsung CognitiV Network Operations Suite (NOS), the RSO is integral to a suite of AI-powered network automation solutions.
The trial’s outcomes suggest substantial benefits for operators, offering automatic adjustments to evolving network conditions, minimizing manual interventions, and enhancing cost efficiency. For consumers, this translates into improved connectivity for activities such as video streaming, web browsing, and voice calls.
Industry Perspectives
Kazuhiro Furuhata, Chief Network Officer at KDDI, stated, “This trial showcases that individualized cell tuning, a longstanding industry objective, is now achievable through AI integration. KDDI remains dedicated to leveraging AI to continuously improve customer network experiences.”
June Moon, Samsung Electronics’ Executive Vice President, added, “This trial with KDDI demonstrates Samsung’s commitment to infusing AI-driven innovation into live commercial networks, facilitating seamless connectivity across diverse network environments.”
Future Directions
Building on this successful trial, Samsung and KDDI plan to further explore AI-based optimization technologies for broader commercial applications. Their ongoing partnership in virtualized network deployments positions KDDI to advance towards AI-native operations.
Samsung Networks continues to lead in delivering comprehensive 5G solutions, including chipsets, radios, and cores. Through sustained R&D efforts, Samsung is propelling the industry forward, preparing for the transition to 6G and beyond. The company remains a key provider of innovative network solutions, serving hundreds of millions of users globally with extensive connectivity.
