NEXASPHERE

Objectives:

NexaSphere aims to design and prototype satellite-compatible technology to support a 3D network of networks. This framework seamlessly integrates multi-path transmission to enhance multi-connectivity in an energy-efficient manner, connecting space and aerial platforms through terrestrial infrastructure.

NexaSphere’s primary objective is to conceptualize and develop advanced hardware prototypes and software algorithms for a sustainable, multi-connected 3D network. This network will integrate radio and optical wireless technologies, enabling network orchestration through AI-driven programming.

Moreover, NexaSphere aims to extend the edge-cloud continuum into space, creating a Radio and Optical-Wireless Connectivity Continuum ranging from short-range to long-range connections. By integrating scalable simulation models with a hardware-in-the-loop approach and validation in both laboratory and relevant environments, NexaSphere intends to demonstrate a proof of concept for this unified TN/NTN network architecture.

The NexaSphere consortium is composed of 18 partners from 9 countries, including RomARS, representing various key sectors for the development and integration of 3D networks.

Vision

NexaSphere’s vision is to create a three-dimensional network of networks that natively integrates multi-path transmission to ensure seamless multi-channel connectivity. This ecosystem will leverage space and aerial platforms in synergy with terrestrial infrastructures to enhance connectivity for the future EU society.

The impact will be significant in key sectors, including:

• • Mobile transportation (aviation, railways, and automotive)

  • Smart cities

  • Smart communities of 2030 and beyond

Romars’ role

In this project, RomARS is responsible for:

• • Designing and developing the most suitable non-3GPP multi-access configurations;

  • Integrating with the HPE CN platform to validate the ATSSS solution in the target use cases;

  • Developing an ATSSS-compliant client and a proxy server, combining L2 steering/switching with a bonding solution based on MP-TCP and MP-QUIC, tailored to the specific application requirements and satellite link characteristics;

  • Evaluating the QoE/QoS of the target applications and fine-tuning the solution.

Status of the project

The Kick-Off meeting was held on January 21–22, 2025.

The first plenary meeting took place on July 9–10 in Athens, Greece. This meeting represented an important milestone in the NexaSphere journey, strengthening cooperation and shared commitment within the consortium.

The second plenary meeting was held on November 27–28 in Naples, Italy.

Official link to the project page: https://nexasphere.eu/