- Rohde & Schwarz has developed with Head acoustics a solution for testing 5G VoNR (Voice over IP over New Radio).
- This solution uses the R&S CMX500 radio communication tester in combination with the labCore hardware platform from Head acoustics and its Acqua measurement and analysis software.
- This solution simulates voice transmission over both 5G (VoNR) and 4G (VoLTE) networks so that manufacturers can evaluate the voice quality of their new 5G telecommunications devices.
The test solution from Rohde & Schwarz is based on the R&S CMW500 wideband radio communication tester for 2G/3G/LTE and WLAN. The test scope for 5G NR can be upgraded with the R&S CMX500 radio communication tester, allowing 5G NR devices to be tested in both standalone (SA) and non-standalone (NSA) TDD and FDD mode. The R&S CMX500 supports the sub6 GHz (FR1) and mmWave (FR2) frequency bands and provides all required technologies for VoLTE and VoNR calls in both SA and NSA mode.
Mobile phones under test can register with the integrated IP multimedia subsystem (IMS) server of the R&S CMX500 platform via the simulated 4G or 5G mobile network, depending on the use case. The labCORE system is connected through wired Ethernet using the integrated IP forward mode of the IMS server, specifically developed for this use case. This allows users to forward the voice data of a call established with the R&S CMX500 directly to the labCORE system for detailed voice quality analysis.
In this mode, the system supports the 5G speech codecs EVS (Enhanced Voice Service), AMR-WB and AMR-NB. Using the test suite of the ACQUA measurement and analysis software developed by HEAD acoustics for TS 26 131-32, the system covers all significant acoustical requirements. This solution enables manufacturers of 5G capable telecommunications devices to test the voice quality of their devices at an early stage and prepare for rollout of 5G voice services.