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Testing Carrier Aggregation for LTE-Advanced and VoLTE

RS-cmw50024 April 2014 - Rohde & Schwarz enhanced its R&S CMW500 wideband radio communication tester to test carrier aggregation for LTE-Advanced and VoLTE as well as the 3G standard. Using the R&S CMW500, manufacturers can now test different carrier aggregation scenarios. The R&S CMW500 can perform tests with three component carriers in the downlink. It can also test two component carriers in the uplink.

The R&S CMW500 delivers the performance required for end-to-end tests on category 6 (Cat6) chipsets and smartphones. Tests are carried out under realistic conditions since downlink carrier aggregation with 2x2 MIMO, including 3GPP fading profiles, can be performed with a single instrument. This makes the R&S CMW500 the ideal platform for development tests, carrier acceptance tests and protocol conformance tests, both for FDD and TDD.

For VoLTE testing, Rohde & Schwarz presented a new turnkey solution that simultaneously verifies voice quality and analyzes how a VoLTE connection affects the lifetime of smartphone batteries. In this setup, the R&S CMW500 shows current drain monitoring over time during the VoLTE connection. The R&S UPV audio analyzer analyzes the audio quality based on POLQA algorithms. The solution is fully automated thanks to the R&S CMWrun sequencer software, making it easy for developers to verify how different applications affect battery lifetime.

Rohde & Schwarz has also enhanced its test solutions for the 3G standard, which continues to coexist with LTE. The R&S CMW500 features new options for testing DC HSUPA with two carriers in the uplink in line with 3GPP Rel. 9. Because it already supports DC HSDPA, users can now test both technologies in combination. The DUT is able to transmit data to the tester in the uplink in an end-to-end connection while simultaneously receiving data in the downlink. These throughput rates can be verified in Layer 1, the RLC layer and the IP layer.

The R&S CMW500 wideband radio communication tester also supports other transmission modes such as SISO, MIMO 2x2, MIMO 4x2 and MIMO 8x2 as well as cellular and noncellular standards such as LTE, WCDMA, GSM, CDMA2000, TD-SCDMA, WLAN and Bluetooth.

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