Update from FCC on 5G NR sub-6GHz NSA SAR Measurements

SPEAG is committed to continuously supporting and guiding the wireless industry through the rapid 5G development. 

4 dipoles2 s

According to the latest updates from 3GPP, the initial 5G NR (New Radio) rollout of networks and devices will be Non-Standalone (NSA). In other words, 5G devices will be using 5G frequencies for enhanced data throughput, but will depend on existing 4G infrastructure for call establishment and control. That scenario is valid both for 5G NR in sub-6GHz (Frequency Range 1) and in mmWave (Frequency Range 2). The simultaneous use of 4G and 5G frequencies, leads to an increased number of possible test configurations, resulting in longer time-to-market due to extended compliance testing. In an attempt to shorten this, SPEAG worked together with FCC on guidance allowing the combination of the 4G and 5G in post-processing instead of direct measurements of all possible combinations. FCC confirmed through the KDB system that this method of addressing the simultaneous transmission in 5G NR NSA is acceptable. The procedure is outlined in the Application Note "cDASY6 SAR measurements for 5G NR NSA Mode below 6 GHz (Version 0.8)". In addition, until a proper call box support for 5G is available, testing should be done using Test Modes, similar to how IEEE 802.11 capable devices are currently tested. The verification dipoles and their target values have been established applying the same protocol as for the other dipoles and have been verified by simulations and experiments (see report of the IT'IS Foundation). More 5G updates are expected during the TCB Workshop in April.

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