Rohde & Schwarz introduces signalling tests for 5G NR in FR1 and FR2 mode
Signalling tests for FR1 and FR2 in non-standalone mode can now be performed with the R&S CMX500. To test 5G NR products which use a much higher bandwidth, and active antennae, over-the-air (OTA) measurements are necessary. Rohde & Schwarz has created a portfolio for 5G NR device testing, based on the CMX500 radio communication tester enabling non-standalone (NSA) and standalone (SA) signalling tests in both FR1 and FR2 frequency ranges.
To allow developers to test their mobile devices in 5G NR NSA and SA mode in line with 3GPP specifications, the test must accurately simulate both LTE and 5G NR networks. The CMX500 radio communication tester adds 5G capability to the company’s LTE test systems (CMW500 or CMWflexx), to allow testing from 2G to 5G on one platform. The extension box R&S CMX500 handles various FR1 and FR2, signalling and non-signalling as well as SA and NSA test scenarios, from R&D to certification testing, confirms Rohde & Schwarz.
A key functionality of the R&S CMX500 is signalling tests in FR2 with support for signalling tests in FR1. The tests performed in NSA mode feature both LTE and 5G connections. They verify LTE/5G signalling protocol behaviour, OTA RF/TX measurements, end-to-end data testing with LTE and 5G bearers as well as mmWave OTA signalling and RF measurements.
Signalling test in the new mmWave-based 5G frequency of FR2 requires an OTA test set up or environment. The test set up features the R&S ATS800R CATR rack- based antenna test system with OTA functionalities. Designed for FR2 R&D measurements, it optimises the available lab space by combining a, compact shielding chamber with T&M equipment in the same set up, to minimise footprint. The integrated reflector surface precision provides a sufficiently large quiet zone with high accuracy, says Rohde & Schwarz.
To control the 5G radio communication testers, the test set up includes the newly developed R&S CMsquares unified test software. This integrates the mobile network simulation with test configuration, parameterisation, real time measurements and test result management in a single environment for all relevant use cases from RF parametric testing over protocol analysis to data end-to-end throughput tests.
It provides easiest user guidance via dashboards and customisable workspaces which allow quick access to the various types of 5G measurements. It also has a built-in sequencer to run pre-configured 5G NR test scripts or to create 5G NR test scripts from scratch using a simple drag-and-drop workflow.
