Background

Established: 2020-07-09

Projects & Missions: 1)5G NTN Planar Automotive Antenna - PRIME - Project Vantage (ESA), 2)Space-based innovation and digitalization for the School of Tomorrow PRIME - Project SCOTSS (ESA), 3)SCOTSS CCN1 Contract extension (ESA) 4)Development and evolution of the Hellenic Governmental Satcom Network - SUBCONTRACTOR - Project DEGREES (ESA). 5) Axis 3 Agriculture AGROHUB - Subcontractor (National Smallsat Program) - ESA 6) Optical Base Stations to Optical Grouns Stations - Obs2Ogs - Subcontractor (Optical Satellite Communications - Skylite) ESA, 7)EU INTRANSIT Develop Project Hermes Airlink (5G Satellite backhaul on passenger aircraft) - EU Horizon - PRIME 8)ESA BIC Greece contract for the development of the 5G LEO and GEO Backhaul Network.

Key Customers: Key customers include Greek governmental and public-sector organisations, educational institutions, telecom stakeholders and enterprises requiring advanced satellite, 5G/NTN and remote-connectivity solutions.

Affiliations/Memberships: 1) ESA-BIC Greece Alumni (https://esa-bic.gr/) 2) Si Cluster - Greece (https://si-cluster.gr/el/home-page/) 3) Hellenic Association of Space Industries (HASI) - https://www.hellenic-asi.org/ 4) 6G-IA full member (www.6g-ia.eu)

Facilities: Cloud Signals operates from a purpose-built professional environment that supports day-to-day engineering, system integration, and project management activities, fully equipped with secure IT infrastructure, collaboration tools, and controlled-access data-handling facilities. Building on its participation in multiple ESA and EU-funded activities in the domains of satellite communications, RF monitoring, spectrum management and 5G-NTN integration, Cloud Signals has established—together with its industrial and academic partners—a flexible over-the-air testbed enabling the validation of satellite and terrestrial backhauling use cases, interference detection scenarios and spectrum-efficiency assessments. The testbed supports end-to-end experimentation across GEO and LEO satellite systems and terrestrial nodes, and includes an application environment for verifying and benchmarking candidate hardware and software components under operationally realistic conditions. Connectivity to external teleports and national monitoring infrastructures is achieved through secure IP-based VPN interconnections, allowing controlled access to live satellite links and RF monitoring resources without geographic constraints. This architecture enables Cloud Signals to perform remote integration, testing and validation campaigns with teleports pointing to operational satellites in both Geostationary and Non-Geostationary orbits, while remaining fully compliant with ITU Radio Regulations, national authorisation frameworks and ESA security requirements. Complementing these external connectivity capabilities, Cloud Signals has deployed a dedicated private 5G network testbed within its facilities. This localized environment enables the active development and integration of a complete 5G architecture, incorporating a fully functional 5G Core (Open5GS), next-generation NodeBs (gNBs) within the Radio Access Network (RAN), and simulated User Equipment (UEs). The primary objective of this specialized network is to evaluate, optimize, and demonstrate the seamless integration of satellite communications—such as Starlink, OneWeb or similar Low Earth Orbit (LEO) constellations—as a resilient, high-throughput backhaul solution for 5G edge networks. The combination of in-house facilities, partner-provided infrastructure and proven remote experimentation capabilities provides Cloud Signals with a reusable and scalable technical foundation, directly supporting activities related to spectrum occupancy assessment, interference characterisation, backhauling performance evaluation and regulatory use-case validation.