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RAN energy consumption and efficiency improvement requires minimizing power usage while maximizing performance. European Telecommunications Standards Institute (ETSI) has defined specifications for energy measurement of wireless access network equipment, including gNB, radio, and network functions. For radio unit (RU) testing, the ETSI ES 202 706 specifications include measuring power consumption under different load conditions —low, medium, busy, and full load. Measuring the O-RU at different loads enables the test engineer to calculate the total energy consumed.
To measure the energy efficiency of an O-RU, test engineers need an O-RAN distribution unit (O-DU) emulator, a DC power supply, and an RF power sensor. The O-DU emulator generates different static traffic levels defined by the ETSI ES 202 706-1 standard. A DC power supply provides power to the O-RU and measures the accumulated power consumption over time. The RF power sensor measures the output power at the antenna connector port. The ratio of output RF power to input DC power represents the energy efficiency measurement.
Additional resources for O-RU energy efficiency measurements
Ensuring device interoperability and performance with mobile network operators (MNOs) network configurations requires running RF / RRM tests to validate RF / RRM carrier acceptance. Learn how to perform the RF / RRM test cases mandated by major 5G MNOs.
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Testing a 5G device for protocol conformance requires running GCF and PTCRB test cases. Learn how to test RedCap, NTN, USIM / USAT, IMS, LBS, LTE, NB-IoT, and C-V2X protocols with a protocol conformance toolset.
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Measuring the energy efficiency of an O-DU / O-CU requires an O-RU and UE emulators to generate the traffic and a core emulator for the backhaul. Learn how to measure energy efficiency following ETSI standards.
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