Inside Aether: Kristian Moeller Explains the Technology Reshaping Private 5G

The telecommunications industry stands at a critical turning point as private 5G networks move from niche deployments to strategic infrastructure for enterprises worldwide. At the forefront of this shift is the Aether Project, an open source platform that combines a cloud-native mobile core, O-RAN compliant radio access network, and Kubernetes-based edge cloud infrastructure to deliver flexible, scalable private 5G connectivity. Inside Aether, traditional proprietary telecom systems are replaced with a software-defined, community-driven approach, giving organisations greater control over their networks while reducing costs and eliminating vendor lock-in.

For Kristian Moeller, an AI engineer working on Aether, the project’s significance lies not only in its open architecture but in its potential to make advanced networking more intelligent and accessible. His work focuses on the intersection of AI engineering and programmable infrastructure, developing models that understand network state, creating tooling that accelerates deployment, and building systems that make open platforms easier to use.

Moeller believes Aether is helping to democratise access to 5G technology by providing a complete platform that organisations can deploy, customise, and scale according to their needs. As enterprises increasingly adopt edge computing, automation, and AI-driven operations, Aether offers a foundation for innovation that extends far beyond connectivity, shaping the future of open telecommunications infrastructure.

The platform’s significance extends beyond mere cost savings. By fostering open standards and community-driven development, Aether accelerates innovation in areas ranging from edge computing to network security whilst enabling organisations to maintain full control over their connectivity infrastructure.

Core Components and Cloud-Native Architecture

Aether’s technical foundation rests on three integrated components that deliver private 5G connectivity through cloud-native principles. The platform combines SD-Core for mobile core functions, SD-RAN for radio access network operations, and a Kubernetes-based infrastructure that enables edge deployment at scale.

SD-Core and Mobile Core Innovations

SD-Core serves as Aether’s cloud-native mobile core, providing both 4G and 5G connectivity capabilities. The architecture separates the control plane from the user plane, allowing the SD-Core control plane at a central site to manage multiple user plane components distributed across edge locations.

This design enables flexible deployment patterns for enterprises. The 5G core network functions operate as microservices within containers, making it possible to scale individual components based on demand. SD-Core supports standard 3GPP interfaces, ensuring compatibility with various radio equipment.

The mobile core handles critical functions including subscriber authentication, session management, and policy enforcement. Because it runs as part of the open source Aether platform, organisations can modify and extend core network capabilities to meet specific requirements without vendor lock-in.

O-RAN Compliant SD-RAN and Radio Access Network Options

SD-RAN provides an O-RAN compliant radio access network that integrates with Aether’s core infrastructure. The implementation follows Open RAN architecture principles, separating the distributed unit (DU), centralised unit (CU), and radio unit (RU) into distinct components.

The platform includes a near-real-time RAN intelligent controller (RIC) that enables programmable network control through xApps. These applications can optimise radio resource management and network performance based on real-time conditions. Aether also supports integration with OpenAirInterface (OAI) for research and testing purposes.

Enterprises aren’t limited to SD-RAN alone. Aether can be deployed with commercially available 4G/5G small cells, providing flexibility in hardware selection. Testing tools like gNBSim enable network validation without physical radio equipment.

Kubernetes-Based Edge Cloud Deployment

The entire Aether stack operates on a Kubernetes-based edge cloud infrastructure, enabling consistent deployment across distributed locations. Kubernetes orchestrates containerised network functions, automatically managing scaling, updates, and fault recovery.

This cloud-native approach allows organisations to start with small deployments and expand as requirements grow. The platform’s modular design means enterprises can deploy edge sites close to end users, reducing latency for time-sensitive applications.

As a Linux Foundation project, Aether benefits from community-driven development and standardised deployment practices. The Kubernetes foundation provides familiar tools for network operations teams, bridging traditional telecom practices with modern cloud infrastructure management.

Enabling Flexible and Scalable Private 5G Networks

The Aether platform delivers private 5G through managed cloud services that automate deployment and operations. Its architecture supports starting small and expanding across multiple sites while maintaining consistent lifecycle management tools.

Managed Cloud Services and Automation

Aether operates as a connectivity-as-a-service offering with built-in automation for private 5G deployments. The platform handles complex orchestration tasks automatically, reducing the technical burden on enterprise teams.

The managed cloud service model includes automated provisioning and configuration management. Network administrators can deploy new sites without manual intervention through centralised control systems. This approach eliminates many traditional pain points associated with private network deployment.

The platform supports advanced capabilities including:

• Network slicing for application-specific connectivity
• Load balancing across distributed infrastructure
• MEC (Multi-access Edge Computing) integration
• SDN architecture for programmable network control

These features work together within the SDN framework to provide dynamic network management. The automation layer continuously monitors performance and adjusts configurations as needed.

Small Deployments and Multi-Site Scalability

The Aether platform enables users to start with small deployments and scale as requirements expand. Initial installations can serve a single location before growing to support distributed enterprise networks.

Organisations benefit from beginning with limited infrastructure investment. A small deployment might cover one facility or campus before expanding regionally. The cloud-native architecture maintains consistency across all sites regardless of scale.

Multi-site scalability relies on Kubernetes-based orchestration that manages resources across locations. Each site runs the same core components whilst sharing centralised management. This design allows enterprises to add capacity without redesigning their network architecture.

The platform supports both single-edge and multi-edge configurations, adapting to geographic requirements.

Lifecycle Management with OnRamp and AMP

Aether OnRamp provides the deployment framework for initialising new private 5G installations. OnRamp automates the setup process from initial hardware configuration through software deployment.

AMP (Aether Management Platform) handles ongoing operations after deployment. Network operators use AMP to monitor performance, update configurations, and manage user policies across all connected sites. The platform provides visibility into network health and usage patterns.

Both tools integrate with the broader SDN architecture to maintain operational efficiency. OnRamp reduces deployment time from weeks to days, whilst AMP simplifies day-to-day network administration. Together, they create a complete lifecycle management system that supports private 5G networks from initial installation through long-term operation and eventual upgrades.

Driving Open Source Collaboration and Standards

The Aether Project strengthens the 5G ecosystem through active community participation and partnerships that unite developers, standards bodies, and telecommunications organisations. This collaborative approach ensures that open source components work seamlessly across different implementations whilst maintaining adherence to industry standards.

Community Engagement and Global Collaboration

The Aether Project operates as an open source initiative that brings together contributors from academic institutions, telecommunications companies, and technology firms worldwide. This diverse participation accelerates innovation and ensures the platform addresses real-world deployment challenges.

Development teams collaborate on core components including SD-Core and SD-RAN, which form the foundation of Aether’s cloud-native architecture. The project maintains transparency through public repositories and documentation that enable developers to contribute improvements and customisations.

Multiple open source 5G projects including OpenAirInterface, Open5gs, and Free5gc share similar goals of democratising 5G technology. These parallel efforts create opportunities for knowledge sharing and technical alignment that benefit the broader telecommunications community.

Interoperability and Integration with Other Projects

Aether’s O-RAN compliant architecture ensures compatibility with standardised radio access network components from multiple vendors. This adherence to Open RAN specifications allows organisations to mix and match equipment rather than being locked into proprietary systems.

The platform’s Kubernetes-based infrastructure supports network function virtualisation, enabling organisations to deploy software-defined network capabilities on commercial off-the-shelf hardware. This approach reduces costs and increases flexibility compared to traditional telecommunications equipment.

Integration capabilities extend to commercially available 4G and 5G small cells, giving deployers options based on their specific requirements. The modular design allows components to be upgraded or replaced without disrupting the entire system.

Role of the Linux Foundation and ONF

Originally incubated at the Open Networking Foundation, Aether transitioned to become a standalone Linux Foundation project. This move expanded its governance structure and increased access to resources that support long-term sustainability.

The Linux Foundation provides infrastructure for collaborative development, including code hosting, continuous integration tools, and community management support. Partnerships with standards organisations like ATIS bridge the gap between open source development and formal telecommunications standards.

ONF contributed its expertise in software-defined networking through ONOS, its flagship SDN controller. This foundation of proven networking technologies gives Aether a robust starting point for building private 5G capabilities.

Advancing Research, Security, and Innovation

The Aether platform enables cutting-edge telecommunications research while providing robust security through transparent, community-driven development. Its open architecture supports academic institutions and defence applications whilst cultivating the next generation of mobile network engineers.

Academic and Industry Use Cases

The Aether 5G platform serves as a foundation for both academic research and defence projects. The US Department of Defence allocated $30 million to universities for research on the Aether platform, demonstrating its value for advanced telecommunications studies.

DARPA’s Project Hydra utilises open-source 5G infrastructure to explore novel communications capabilities. These initiatives allow researchers to experiment with SDN controllers and network architectures without proprietary restrictions.

The platform enables testing of User Plane Function (UPF) components and data plane development kit (DPDK) optimisations. Tools like gnbsim facilitate network simulation for developers. ONF also supports Project Pronto, which deploys Aether as a software platform for connected edge applications.

Security, Reliability, and Transparency

Open-source 5G platforms provide enhanced security through community scrutiny of code. Multiple experts can identify vulnerabilities before they become critical issues. This transparency reduces risks compared to closed systems where problems may remain hidden.

The cloud native Mobile Core (SD-Core) and O-RAN compliant RAN architecture enable organisations to verify security measures directly. Defence applications benefit from this approach, as agencies can audit components for potential threats.

Energy efficiency improvements become possible when developers optimise the entire stack. The collaborative model allows researchers to share findings on performance enhancements and resource allocation strategies.

Empowering Education and Developing Talent

Universities gain hands-on access to professional 5G infrastructure for training telecommunications students. Engineering programmes can deploy small-scale networks and expand as requirements grow.

Students learn practical skills in Kubernetes-based edge cloud deployment and network orchestration. This experience prepares graduates for careers in mobile communications and edge computing.

Research institutions contribute to platform development whilst building expertise in emerging technologies. The collaborative environment connects academia with industry practitioners, creating pathways for innovation and knowledge transfer.

Technical Architecture and Performance Benefits

The Aether platform employs advanced architectural patterns that separate network functions and enable virtualised deployment at the edge. These design choices deliver improved performance, flexibility, and support for emerging applications requiring low latency.

Control and User Plane Separation (CUPS)

The CUPS architecture divides the mobile network into two distinct planes that operate independently. The control plane manages signalling and session establishment, whilst the user plane handles actual data traffic.

This separation allows operators to scale each plane based on specific requirements. Data-intensive applications can benefit from additional user plane capacity without requiring changes to the control plane infrastructure.

The architecture enables flexible deployment patterns. Control plane functions can remain centralised in cloud data centres, whilst user plane functions (UPF) move closer to end users at edge locations. This positioning reduces latency for time-sensitive applications by minimising the distance data must travel.

CUPS also simplifies network upgrades and maintenance. Operators can modify or update one plane without disrupting the other, reducing downtime and operational complexity.

Support for Network Function Virtualisation

Aether’s cloud-native Mobile Core (SD-Core) runs on Kubernetes-based infrastructure, replacing traditional hardware appliances with software-based network functions. NFV eliminates the need for proprietary equipment and enables deployment on standard servers.

The platform leverages SDN architecture principles to separate control logic from forwarding functions. This approach provides programmability and centralised management across the network.

Performance optimisation comes through integration with DPDK, which accelerates packet processing in the user plane. The Data Plane Development Kit bypasses the kernel networking stack, enabling the UPF to handle high-throughput workloads with minimal latency.

Virtualisation reduces capital expenditure by allowing multiple network functions to share common hardware resources. Operators can deploy new services more rapidly compared to traditional approaches requiring physical equipment installation.

Edge Services and AI/ML Capabilities

The platform supports MEC implementations that position computing resources at network edges close to users and devices. This architecture enables applications requiring ultra-low latency, such as industrial automation and real-time video analytics.

Aether’s Industry 4.0 APIs allow intelligent applications to dynamically adjust network slices based on real-time connectivity requirements. Security applications built on AI/ML platforms can request specific network characteristics as processing demands change.

Edge deployment brings data processing closer to where information is generated. This reduces bandwidth consumption on backhaul links and improves response times for latency-sensitive workloads.

Future Directions and Industry Impact

The Aether Project is positioned to transform how industries deploy private 5G networks, with particular emphasis on manufacturing environments and edge computing scenarios. Network slicing capabilities enable dynamic resource allocation for diverse applications requiring different connectivity parameters.

Real-World Deployments in Industry 4.0

Manufacturing facilities are beginning to adopt Aether 5G platforms for Industry 4.0 applications, where intelligent AI and machine learning systems operate at the edge. These deployments leverage network slicing to adjust connectivity in real time based on application requirements.

The US Department of Defense has allocated $30 million to universities for research on the Aether 5G platform, demonstrating significant institutional support. This funding enables educational institutions to develop practical expertise whilst contributing to the platform’s development.

Factory automation systems benefit from the low latency and high reliability that private 5G networks provide. The open source nature allows manufacturers to customise the 5GC and other components to meet specific operational needs without vendor lock-in.

Opportunities for Innovation in 5G Connectivity

The open source 5G ecosystem creates opportunities for developers to build novel applications on proven infrastructure. The Kubernetes-based architecture supports microservices that can scale according to demand.

Small organisations can now experiment with 5G connectivity without substantial capital investment. The Aether platform enables users to start with small deployments and expand as requirements grow, making enterprise-grade connectivity accessible to a broader range of businesses.

O-RAN compliance ensures interoperability between different vendors’ equipment. This standards-based approach encourages competition and reduces costs whilst maintaining performance standards across the network.

The Path Towards Full 5G Ecosystem Integration

Aether’s cloud-native mobile core integrates with existing IT infrastructure through standard APIs. SD-Core and SD-RAN components work together on edge cloud platforms to deliver complete 5G functionality.

The platform’s modular design allows gradual migration from 4G to 5G services. Organisations can maintain legacy systems whilst introducing new capabilities incrementally, reducing disruption to ongoing operations.

Collaborative development between industry partners, research institutions, and the open source community accelerates feature development. This approach produces battle-tested solutions that address real-world deployment challenges rather than theoretical scenarios.