OTA Test Realistically Emulate Satellite Connections in the Lab

From Hendrik Härter | Translated by AI 2 min Reading Time

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As part of a collaboration, Anritsu's RF measurement technology will be used to emulate realistic satellite connections in the lab according to 3GPP standards. This is particularly interesting for satellites in low Earth orbit.

The MT8821C from Anritsu supports a wide frequency range and enables stable and high-performance RF testing for LTE, LTE-Advanced, Cat-M1, and NB-IoT terminals.(Image: Anritsu)
The MT8821C from Anritsu supports a wide frequency range and enables stable and high-performance RF testing for LTE, LTE-Advanced, Cat-M1, and NB-IoT terminals.
(Image: Anritsu)

The Microwave Vision Group (MVG) and Anritsu are presenting a test solution for the over-the-air (OTA) validation of non-terrestrial network (NTN) communications for mobile and IoT devices. To emulate realistic satellite connections in a lab environment according to 3GPP requirements, MVG has integrated its multi-probe OTA systems with the capabilities of the Anritsu Radio Communication Analyzer MT8821C.

As NTN deployments through LEO satellite constellations, meaning satellites in low Earth orbit, gain momentum, mobile and IoT devices must deliver robust performance under conditions that differ significantly from terrestrial operations. These include Doppler effects caused by satellite movement, greater signal delays due to long distances, complex network selection mechanisms between satellite and ground networks, and roaming across various regulatory boundaries. The ability to accurately simulate these parameters in the lab is crucial to ensure device readiness and minimize field testing.

Important Metrics in Satellite Test Conditions

MVG has configured its OTA systems, as well as the SG systems and StarLab, so that Anritsu's MT8821C serves as the central signal generation and analysis module. The MT8821C provides RF and protocol capabilities within MVG's controlled OTA testing environments. This enables manufacturers to evaluate critical metrics such as Total Radiated Power (TRP), Total Isotropic Sensitivity (TIS), and receiver sensitivity under satellite-like test conditions.

Sebastien Gaymay, OTA Product Manager at MVG: "By adapting our test chambers for operation with the MT8821C, we offer R&D teams the ability to emulate key components of NTN communication directly in the lab." This shifts troubleshooting forward and accelerates development cycles for satellite-enabled mobile and IoT devices.

Realistic NTN Conditions

The MT8821C supports a wide frequency range and enables stable and high-performance RF testing for LTE, LTE-Advanced, Cat-M1, and NB-IoT terminals. Within the MVG system, the WaveStudio software allows synchronized measurements, enabling test engineers to simulate and evaluate device performance under realistic NTN conditions in accordance with 3GPP TS 36.521-4.

The test is particularly suited for OEMs and integrators working on global asset tracking, remote monitoring, and industrial IoT applications where NTN networks are critical for extending coverage. Additionally, it facilitates testing against network specifications from providers like Skylo, helping manufacturers verify performance and readiness for commercial NTN services. (heh)

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