Test and measurement specialist Rohde & Schwarz has supplied mobile network testing tools used in dronebased network coverage, performance and operation tests managed by Ericsson, a global leader in network infrastructure. The unique procedure enables unprecedented 3D accessibility, positional accuracy and repeatability of the testing. It also opens up new possibilities to ensure end user Quality of Service (QoS) for demanding 5G use cases such as industry 4.0, automotive and public safety.
The deployment of 5G New Radio (NR) brings new applications of cellular networks for subscribers, government and industry. It also makes the verification of the correct coverage, performance and operation of networks more critical, increasing the demand for accuracy and accessibility in traditional field network tests.
A project team based in Jorvas, Finland and led by Ericsson’s 5G Readiness Program RAN Technical Lead Richard Wirén, has developed together with Centria University of Applied Sciences a novel system for testing cellular mobile network coverage. The new system uses mobile network testing scanners and smartphones from Rohde & Schwarz mounted on a drone that can be programmed to execute automatic tests with considerable flexibility, for example for precise route selection and drone speed control. This solution is especially valuable for industrial use cases. It also has the advantages over traditional walk and drive tests by providing unprecedented repeatability and positional accuracy with the ability to verify beamforming and map coverage in 3D.
The R&S TSMA6 network scanner is mounted on a drone and is able to simultaneously verify important LTE and 5G NR coverage metrics such as reference signal received power (RSRP) and signal-to-interference-plus-noise ratio (SINR) in accordance with 3GPP standards. When combined with the R&S QualiPoc Android smartphone-based optimizer, IP trace, application QoS metrics such as serving cell parameters are possible. The solution currently uses LTE user equipment (UE) but will soon be further developed to include 5G UEs such as the Samsung S10 5G.
The drone can be programmed to follow an exact three-dimensional route. The over 20 successful measurement flights conducted so far have shown the solution procedure and results to be extremely repeatable. The drone flights were of various duration, altitudes and routes, depending on the test case. Control, authentication and air traffic control are considerable challenges to the development of robust drone-based solutions. In this new system they are conducted over cellular networks, eliminating the requirement for line-of-sight connection between the drone and its pilot.
The project is a collaboration between Ericsson, Rohde & Schwarz, Tampere University and Centria University of Applied Sciences and forms part of the Business Finland 5G FORCE program.
Richard Wirén, 5G Readiness Program RAN Technical Lead from Ericsson, says, “For 5G to realize its promise, field verification of operation and quality is essential, and this development is a pioneering way to ensure our customers receive the network performance they require. We are delighted to utilize test solutions from Rohde & Schwarz that have proven themselves very reliable and are excited that we now have access to solutions based on commercially available 5G NR UEs such as the Samsung S10 5G.”
Vice President of mobile network testing Rohde & Schwarz, Hanspeter Bobst, says, “We are delighted to combine our industry-leading mobile network testing know-how with Ericsson’s long tradition of network innovations to ensure the delivery of end-user Quality of Experience as 5G NR becomes a reality.”
Future developments will focus on testing critical 5G applications such as public safety and machine-type communications for Industry 4.0, extending the frequency to extremely high frequencies of the mmWave bands and testing in an urban environment.
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Mobile Network Testing
Rohde & Schwarz is a leading global supplier of standalone products, integrated solutions and managed services for testing and improving the quality of mobile networks along the entire network lifecycle – from lab verification, spectral clearance, interference hunting and base station installation to site acceptance, benchmarking, optimization, troubleshooting and monitoring. The comprehensive portfolio supports all technologies, from 2G to 5G, and addresses all test and measurement scenarios from RF to end-user quality of experience (QoE). The innovative solutions allow users to accurately collect data and to gain machine learning-assisted deep insights into the QoE delivered to end users. Solutions from Rohde & Schwarz empower top-tier mobile network industry players to make QoE-centric business decisions with confidence, to deliver better services with higher quality for end users, to reduce time to market for new technologies and services and to secure and increase the value of their business.
Ericsson enables communications service providers to capture the full value of connectivity. The company’s portfolio spans Networks, Digital Services, Managed Services, and Emerging Business and is designed to help our customers go digital, increase efficiency and find new revenue streams. Ericsson’s investments in innovation have delivered the benefits of telephony and mobile broadband to billions of people around the world. The Ericsson stock is listed on Nasdaq Stockholm and on Nasdaq New York.
About Rohde & Schwarz
The Rohde & Schwarz technology group develops, produces and markets innovative communications, information and security products for professional users. The group's test and measurement, broadcast and media, aerospace | defense | security, networks and cybersecurity business fields address many different industry and government-sector market segments. On June 30, 2018, Rohde & Schwarz had approximately 11,500 employees. The independent group achieved a net revenue of approximately EUR 2 billion in the 2017/2018 fiscal year (July to June). The company has its headquarters in Munich, Germany. Internationally, it has subsidiaries in more than 70 countries, with regional hubs in Asia and America.
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