PAGE CONTENTS
Objectives
The objective of this project is to develop a future‑proof platform for 5G NR-NTN device testing, with the primary aim of making 5G testing simpler and more straightforward for all 5G NR-NTN deployments. The solution incorporates:
- Support for GEO, GSO and LEO.
- Simulation of varying dopplers and delays.
- Protocol R&D testing scenarios.
- Conformance testing scenarios.
NR-NTN is an important feature in 5G NR Release 17 and enables broadband satellite communication with a smartphone for the first time. With the inclusion of NTN‑NR to the various testing modules, the R&S®CMX500 seeks to contribute to the new 3GPP NTN ecosystem and make ubiquitous communication a reality.
Benefits
- Support for the entire product lifecycle.
- Coverage for all 5G NR-NTN device testing use cases.
- Regular implementation of all new standardization and test house requirements.
- Support for all 3GPP bands in FR1.
Features
The R&S®CMX500 is designed to meet all the test requirements that can occur over the entire lifecycle of a mobile communications device.
The features specific to this project are:
- Support of GEO, GSO and LEO.
- Simulation of varying Dopplers and delays.
- Protocol R&D testing scenarios.
- Conformance testing scenarios.
Challenges
The key challenge of this project is developing a platform that could properly test for the unique requirements of NTN communication. NTN device testing presents a wide range of challenges, such as:
- Time synchronization: Distance from UE to satellite causes long absolute delay.
- Frequency synchronization: Movement of LEO satellites causes Doppler shift.
- NTN mobility: LEO satellites travel at very high unprecedented speeds, which requires redesign of mobility procedures.
System Architecture
The R&S®CMX500 is a one‑box solution for all NR-NTN signaling testing needs. It emulates the entire 5G stack and provides best‑in‑class RF capabilities. Modular software tools tailored to different device production stages enable a unified testing environment for all use cases. A modular hardware architecture allows for detailed customization.
Plan
The project has a technology phase and a product phase, with KO, PDR, CDR and FR milestones.
Current Status
Work is in progress.
