Flexi-DAS
The Flexi-DAS project aimed to redefine how 5G networks deliver coverage in complex or underserved environments through intelligent, adaptable infrastructure. Led by AWTG and supported by UK Government innovation frameworks, the initiative focused on building flexible DAS radio heads using field-programmable radio chipsets and Reconfigurable Intelligent Surfaces (RIS), a reflective or transmissive panels that can steer radio signals around physical obstructions such as buildings or glass. Flexi-DAS also introduced AI-driven control mechanisms for managing DAS and RIS components via network management systems and Open RAN RIC (Radio Intelligent Controller) interfaces. This architecture enabled real-time optimisation of radio signal paths and energy consumption based on live user traffic and application demand. The project placed a strong emphasis on scalability, open-source development, and practical deployment models enabling solutions suitable for both public operators and private network deployments.
Project Partners
Flexi-DAS has set a new standard for intelligent, energy-efficient 5G infrastructure, demonstrating how AI and reconfigurable hardware can enhance network flexibility, reduce cost, and expand coverage. By focusing on automation, interoperability, and UK-based innovation, the project has laid a strong foundation for next-generation DAS and RIS systems that can scale across industries and geographies.
Project Status
The Flexi-DAS project concluded successfully in October 2024, with a closing event that highlighted major achievements in architecture, performance, and cross-industry collaboration. As Project Lead, AWTG introduced several key innovations that enhanced the flexibility and intelligence of Distributed Antenna Systems (DAS). These included a flexible interface between DAS and Flex-5G Open RAN MPNs, enabling seamless multi-vendor integration, and an AI-driven energy optimisation engine that dynamically adjusted antenna performance based on real-time traffic patterns reducing power consumption while maintaining network quality. The project also delivered a centralised DAS management platform that supports real-time monitoring, diagnostics, and automation, significantly improving operational efficiency.
Collaboration was central to Flexi-DAS’s success. Working with the University of Surrey, the project advanced the use of Reconfigurable Intelligent Surfaces (RIS) and adaptive beamforming to boost data throughput and coverage in hard-to-reach areas, while Lime Microsystems contributed a plug-and-play 5G MPN solution built on open-source SDR modules for flexible deployment. The consortium also explored neutral hosting and low total cost of ownership (TCO) models, making Flexi-DAS highly suitable for scalable and energy-efficient 5G applications. The project’s success represents a major step forward in intelligent RAN component design, paving the way for greener, smarter, and more inclusive network architectures.
Discover AWTG’s leadership in the Flexi-DAS project
As Project Lead, AWTG pioneered innovations in Open RAN integration, AI-driven energy optimisation, and intelligent network management delivering a more efficient, flexible, and sustainable 5G infrastructure for the future.
