Numerous 5G Policy, Technical Questions Need Answering, SIA Says
If the FCC undertakes rulemaking regarding use of frequencies above 24 GHz for mobile services, including the 42-43.5 GHz band, it should look to answer a slew of policy and technical questions, such as what the 5G system characteristics are…
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that can be used to look at the sharing environment, said the Satellite Industry Association in a filing posted Wednesday in docket 14-177. It lists more than two pages of suggested 5G, propagation, satellite, inter-service sharing, cumulative interference and licensing questions. They range from whether in certain bands 5G networks could be limited to indoor-only use to minimize interference to what are the prospects of developing user devices that can operate across the bands spanning 24-95 GHz and even above that might be used for 5G services. When looking at propagation models, SIA asked, should the FCC use the free space loss model to calculate interference, or are there other models that should be tested? It also said the FCC might want to inquire about technical parameters of the earth station types deployed or in the works in the frequency bands under consideration, and how sharing between satellite earth stations and 5G systems might work. And as it looks at cumulative interference, the FCC might need to ask about compatibility models or studies that look at cumulative 5G interference, SIA said.