Carrier aggregation (CA) is a key feature of recent wireless standards (4G, 5G, NR, etc.) that enables combining of two or more carriers into a single data channel to increase capacity. The number of carrier combinations can be very large, and verifying all combinations, or even a representative fraction thereof, involves a time-consuming and expensive commitment of engineering resources and test equipment. Per the techniques described herein, for time-division duplex standards, a first mobile device under test (DUT) is verified for CA operation by a second DUT. For example, a transmit CA combination of a first DUT is verified by the proper detection of the CA combination by a second DUT. The techniques simplify CA testing and reduce verification/compliance costs.
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He, Fei; Sun, Max; Song, Jie; and Yang, Shawn, "Efficient, low-cost techniques to verify carrier aggregation in mobile devices", Technical Disclosure Commons, (September 03, 2019)