Sharing vs. Exclusive Use Licenses Debated for 3.45-3.55 GHz Band

Reallocate the 3.45-3.55 GHz band based on flexible use rules, similar to those in the C band, CTIA told the FCC in reply comments posted Tuesday in docket 19-348. Carriers offered similar advice, while others said sharing would mean faster use of the spectrum. Commissioners sought comment in a Further NPRM approved 5-0 in September (see 2009300034). “Action is essential to further promoting nationwide, full-power, wide-area 5G service, which will drive a dynamic 5G ecosystem across the United States,” CTIA said. The group opposed rules based on sharing in the citizens broadband radio service band: “While the CBRS framework shows promise and offers new opportunities, it is subject to lower power limits, a complex spectrum sharing scheme, and other technical limitations.” T-Mobile said CBRS-style sharing is “antithetical” to DOD’s process in making the band available. That process “determined that the spectrum can be cleared over the majority of the contiguous United States with targeted protections for federal users.” The FCC is well aware that “CBRS power levels and narrower channels would hamper development of the 3.45-3.55 GHz band as a true 5G band because the power levels are significantly lower than standard commercial wireless networks and the smaller channel sizes are not optimized for wide-bandwidth, low-latency 5G applications,” Verizon commented. View 3.45-3.55 GHz as a “first step toward making the entire 3.3-3.55 GHz band available for commercial flexible use,” the Competitive Carriers Association said. Federated Wireless argued for sharing. A sharing framework “is the only path to commercial use in the band that is fast, equitable, and supportive of a diverse set of use cases, leading to the most expeditious and intensive use of the band,” Federated said: “Extension of the CBRS sharing framework to the 3.45 GHz band will reduce coordination burdens on both federal and commercial users, while avoiding the interference problems that the vast majority of commenters predict will occur should the proposed rules be adopted.” The Dynamic Spectrum Alliance agreed: "Extending the existing CBRS framework would be the most expedient way to make this critical spectrum available for commercial 5G operations, rather than waiting for a more complicated and time-consuming clearing and auction process.” In the CBRS auction, 10 utilities submitted winning bids totaling more than $174 million for 371 priority access licenses, the Utilities Technology Council said. “Adopt county-based licenses and auction the licenses in 10 megahertz blocks, which will promote opportunities to build upon the success of the CBRS auction by enabling CBRS licensees to more easily combine their CBRS spectrum with the 3.45-3.55 GHz band.”