APCO Says Concerns Remain About Sharing 6 GHz Band
APCO said it remains concerned about an FCC proposal to open the 5.925-6.425 and 6.425-7.125 GHz bands to unlicensed and new fixed/mobile uses. The band was one of those on which the FCC sought comment last summer in its mid-band…
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spectrum notice of inquiry (see 1708030052). “The GHz band is heavily used and relied upon for fixed point-to-point microwave links essential to public safety services, including backhaul for mission critical land mobile radio systems that support dispatch and tactical communications,” APCO said in a filing in docket 17-183. “Furthermore, public safety has no other viable spectrum options to support these essential services. To avoid negatively impacting public safety communications, the Commission should consider bands other than 6 GHz to achieve its flexible spectrum use goals.” APCO raised particular concerns about a report by RKF Engineering Solutions, filed by tech companies in January, which said the band can be opened without harmful interference to incumbents (see 1801260043). Nokia also disputed the RKF analysis. "Such flawed analysis should not be used as the basis for analyzing potential coexistence of unlicensed mobile operations with the Fixed Service in the 6 GHz band," Nokia told the FCC.