Testing O-RAN

Testing O-RAN

Opening virtualized networks with O-RAN demands suitable test and measurement solutions

With the technical evolution and motivation of Open RAN, radio access networks (RANs) are made open, disaggregated and intelligent. This technological evolution fosters future RAN to build on virtual network elements, white-box hardware and standardized interfaces. The O-RAN Alliance defines new O-RAN interfaces complementary to 3GPP RAN interfaces and additional specifications, and assists its members to integrate and test their implementations.

The O-RAN Alliance suggests a double split between the centralized unit (CU) and the distributed unit (DU) as the high layer split (HLS) and defines the low-layer split (LLS) as a fronthaul interface between the O-DU and the radio unit (O-RU). It tackles aspects of user-, control-, management- and synchronization planes.

Rohde & Schwarz is ready to offer its industry knowledge and insight to help with this challenging task.

Proven mobile communication test methods can be used to verify the quality of RF components, radios or the air interface and debug digital design as well as power management. Those are extended by specific O-RAN test methods. Innovative test solutions are needed when it comes to verifying the performance of infrastructure equipment during R&D and production.

Conformance testing is required to test the O-RAN fronthaul interface in addition to the 3GPP base station conformance of the O-RU subsystem.

When deploying an O-RAN network, network testing solutions are necessary to verify the interoperability, end-to-end performance and user experience of an O-RAN network. The nature of O-RAN disaggregation allows various possibilities to time synchronize the infrastructure components. Thus, time synchronization and verification guarantee proper time alignments.

Rohde & Schwarz competence for O-RAN testing
Rohde & Schwarz competence for O-RAN testing
Open Lightbox

Rohde & Schwarz test solutions for Open RAN from design and conformance to production and end-to-end-testing

Rohde & Schwarz offers a wide product portfolio to ensure the performance of O-RAN equipment and networks. The industry-leading signal generation and analysis tools from Rohde & Schwarz are ideal for verifying the RF performance of radio network equipment from design to production, together with providing full test capabilities for 3GPP conformance testing.

The extended Rohde & Schwarz software features, combined with harmonized third-party O-DU emulation, provide an integrated and automated test setup for verifying O-RAN fronthaul conformance with ease.

The leading-edge portfolio further includes future-proof solutions for over-the-air (OTA) testing and beamforming. In addition, best-in-class oscilloscopes and power supplies ensure the overall performance of O-RAN equipment by verifying digital design and power management. The high-performance oscilloscopes are also best suited for verifying the pps time synchronization signal and for latency measurements. OTA network synchronization measurements are carried out with the 5G Site Testing Solution.

Rohde & Schwarz mobile network testing solutions cover O-RAN network testing through its lifecycle, from the initial engineering pre-operational stages in the lab to field trials, site testing and network performance tuning and troubleshooting during network rollout. When the O-RAN network is operational, end-user satisfaction is ensured through end-to-end quality benchmarking and monitoring.

Our Smart platform uses real smartphones (UEs) to benchmark service performance end-to-end with standardized QoE and QoS scoring methods. It also captures the functional performance of network access and mobility management procedures - key for the O-RAN interoperability. Our market-leading, high-performance RF scanner is used to characterize RF coverage and to measure interference robustness as well as the network synchronization integrity."

O-RAN fronthaul and 3GPP conformance test setup

O-RU test set-up

How to test an O-RAN system

How to test an O-RAN system

Related videos and webinars on O-RAN

Webinar: Open RAN – network performance in the lab and field

Get an overview of the O-RAN disaggregation aspects and learn how T&M can guarantee the successful deployment of an O-RAN network.

More information

A concise introduction to O-RAN technology

A concise introduction to O-RAN technology

Discover the technology and test aspects of Open RAN radio access networks (O-RAN).

More information

Introduction to O-RAN radio unit testing

Introduction to O-RAN radio unit testing

Learn how to verify the interoperability of your O-RAN network equipment.

More information

Products for O-RAN R&D and production testing

R&S®SMW200A vector signal generator

Advanced instrument for configuring and generating signals of high quality; supports O-RAN test case generation with option R&S SMW-K175.

Product information

R&S®SMM100A vector signal generator

Redefining midrange with remarkably good RF characteristics over its entire frequency range up to mmWave: supports O-RAN test case generation with option R&S®SMW-K175.

Product information

R&S®FSVA3000 signal and spectrum analyzer

Setting standards in RF performance and usability: Midrange analyzer with widest analysis bandwidth in its class.

Product information

R&S®VSE vector signal explorer software

Software to analyze I/Q data of conformance test cases specified by O-RAN with option R&S®VSE K175.

Product information

R&S®ATS1800C compact 3GPP-compliant OTA chamber for 5G NR mmWave signals

CATR based compact and mobile anechoic chamber for mmWave 5G OTA testing.

Product information

R&S®PWC200 plane wave converter

Leading, small footprint solution to verify RF performance of massive MIMO devices.

Product information

R&S®RTP oscilloscopes

Best-in-class high performance oscilloscope with bandwidths up to 16 GHz offering multidomain test, 5G MIMO capabilities and conducted time synchronization verification.

Product information

Products for O-RAN end-to-end & interoperability testing

R&S®QualiPoc Android for smartphone based QoE/QoS testing

Powerful and flexible software for RF testing and service quality assessment; offers full set of service quality tests for voice, data and video together with complete air interface logging.

Product information

R&S®TSMx6 RF scanner family

Advanced multiband and multi-technology RF scanners; decodes all channels in multiple technologies with market leading speed, sensitivity and frequency coverage.

Product information

R&S®5G STS site testing solution

All-in-one portable tool - TSMA6 high speed RF scanner for passive measurements controlled by R&S®ROMES4 software or QualiPoc Android software and active end-to-end measurements executed by the QualiPoc Android smartphone.

Product information

R&S®SmartAnalytics data analytics software

Powerful web-based analytics software that provides QoE and QoE focused insights and O-RAN network performance metrics.

Product information

Sign up for our newsletter
Sign up for our newsletter