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IMS2022



NEWS | FEBRUARY 24, 2022




ROHDE & SCHWARZ VALIDATES FIRST 5G RRM FR2 2XAOA CONFORMANCE TESTS WITH THE R&S
TS-RRM-NR TEST SYSTEM



The PTCRB certification organization has approved the first radio ressource
management (RRM) conformance test cases for FR2 with two angles of arrival
(2xAoA), using the R&S TS-RRM-NR 5G RRM conformance test system from Rohde &
Schwarz. The test cases have been validated in multiple FR2 EN-DC band
combinations, using the new R&S ATS1800M CATR based multi-AoA anechoic chamber.

Conformance tests are vital for mobile communications technology, as mobile
network operators worldwide rely on the certification schemes of PTCRB (PCS Type
Certification Review Board) and GCF (Global Certification Forum) to accept
mobile devices in their networks. Therefore, progress in RRM conformance testing
in both, FR1 and FR2 frequency bands, is crucial for a successful rollout of 5G
NR technology globally. RRM testing according to 3GPP is a challenging
combination of several protocol and performance related test steps. Such RRM
tests typically verify the UE’s ability to measure the strength of a signal
coming in from different angles, and the related reaction time under different
channel conditions, with variations of bandwidth, power levels and fading
conditions.

The PTCRB has officially accepted the R&S TS-RRM-NR 5G RRM conformance test
system from Rohde & Schwarz as suitable for the 5G RRM FR2 requirements as
described in the 3GPP specifications. The validation process by the PTCRB
requires PASS verdicts of the complete test case performed on at least two
different devices. The updated version of the R&S TS-RRM, the acknowledged
family of RRM conformance test systems from Rohde & Schwarz, has successfully
accomplished this acceptance test for FR2 with two angles of arrival (2xAoA).
For this, the device under test is being examined exposed to signals arriving
simultaneously from two different angles to simulate real network conditions.

Rohde & Schwarz is an established one-stop solutions supplier for conformance
and operator acceptance testing from 2G through 5G. The R&S TS-RRM-NR is now
available in configurations for LTE, WCDMA and 5G technologies. The R&S CMX500
radio communication tester and the new R&S ATS1800M CATR based anechoic chamber
for mmWave 5G OTA testing have added 5G NR signaling functionality for FR2 1xAoA
and 2xAoA to the integrated test system. It is operated by the R&S CONTEST
sequencer software and offers high efficiency and precise, reproducible
measurement results. The R&S ATS1800M allows multiple angles of arrival (AoA)
measurements compliant to the enhanced IFF test setup as per 3GPP TS 38.508-1
thanks to its two side chambers and large, overlapping quiet zone.

Furthermore, the 5G RRM test cases are also supported by the R&S TS8980, a
unique integrated RF conformance test system supporting mobile technologies all
the way from 2G to 5G including FR2.

About Rohde & Schwarz
The Rohde & Schwarz technology group is among the trailblazers when it comes to
paving the way for a safer and connected world with its leading solutions in
test & measurement, technology systems, and networks & cybersecurity. Founded
more than 85 years ago, the group is a reliable partner for industry and
government customers around the globe. On June 30, 2021, Rohde & Schwarz had
around 13,000 employees worldwide. The independent group achieved a net revenue
of EUR 2.28 billion in the 2020/2021 fiscal year (July to June). The company is
headquartered in Munich, Germany.



Source: Rohde & Schwarz

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