NTIA released a report Monday calling for further study but saying federal agencies may be able to share the 3450-3550 MHz band, which is directly below the 3.5 GHz citizens broadband radio service spectrum (see 2001270025). DOD assisted in preparing the report. Federal operations in the band “include shipborne, airborne, and land-based systems -- primarily radars,” blogged Charles Cooper, associate administrator of the NTIA Office of Spectrum Management: “Our report points to a clear possibility for real time spectrum sharing that would protect these critical missions, while providing attractive opportunities for commercial business.” The next step is studying how often each of the federal systems is used, and then developing “mechanisms for reliably informing commercial operations when federal systems are operating nearby,” Cooper said: "This 100 MHz of spectrum should be well suited for realizing 5G’s promise of higher throughput and lower latency operations." The report says the band gets significant federal use, with shipborne radars operating at more than 20 ports along the Atlantic, Pacific and Gulf coasts. Some airborne systems operate nationwide; other systems are limited, the report said: “The ground-based radars operate at over one hundred locations, including many near high-population areas. In addition, DOD continues to deploy systems at additional locations and to develop new systems for operation in the band.” Some aspects “of the systems are classified, which reduced the ability for the report to be as transparent regarding the analysis as otherwise possible,” the document says. Frequency- or geographic-based sharing approaches “would result in significant restrictions on commercial services, in terms of emitter power limits and exclusion zones, making sufficient access for viable commercial applications unlikely,” the report found: “A dynamic, time-based sharing mechanism could present a potentially attractive approach to both protecting federal systems and providing viable commercial operations. Commercial operations would be contingent on spectrum availability, which will depend on the frequency, time, and location of federal system operations.” It’s no surprise NTIA found “extensive” military use of the band requiring protection, said Michael Calabrese, director of the Wireless Future Program at New America. “The good news is that the report’s technical findings suggest the spectrum could be shared nationwide by low-power, indoor operations, as well as outdoors away from the coasts,” he told us: “It appears that shared use could be supported by expanding on the database coordination approach that manages sharing with the Navy in the adjacent band under the new CBRS framework that became fully open for effectively unlicensed use today. Adding this band to CBRS looks like it will be the fastest and most efficient way to put it to use for 5G-quality connectivity.”
NTIA recommended protections for DOD mobile ground-based radar systems operating below 3.5 GHz that need safeguarding from citizens broadband radio service interference. In a letter to FCC Wireless Bureau Chief Don Stockdale and Office of Engineering and Technology acting Chief Ronald Repasi posted Thursday in docket 17-258, NTIA said there are 40 of those mobile radar system locations. It said for some, NTIA will maintain a list of locations for CBRS spectrum access system operators to use. It said for others, dynamic protection areas that are always activated would be a way of protecting them, as it would limit maximum aggregate received power from CBRS devices at the radar antenna aperture. It asked the FCC offices to act to effectuate that protection.
LAS VEGAS -- This year will be one of “execution” on making more spectrum available for 5G and Wi-Fi, FCC Commissioner Mike O’Rielly said in an interview at CES. O’Rielly and Commissioners Geoffrey Starks and Brendan Carr spoke on a panel, after remarks by Chairman Ajit Pai. Pai wasn’t asked about and didn’t provide any additional details on the 6 GHz band or C band (see 2001070054).
Drones can safely use the 960-1164 MHz and 5030-5091 MHz bands if they use spectrum access system (SAS) technology like that employed in the citizens broadband radio service band (see 1912270039), Federated told the FCC. Federated is an approved SAS administrator for CBRS. “SAS technology … readily adapts to other frequency bands and can be leveraged to maximize spectrum utilization while implementing incumbent protections and priority access regimes that address the unique characteristics of each band,” Federated said in docket 19-356, posted Friday. This sharing regime is made possible because “SAS technology is built upon a dynamic cloud-based database that ... provides real-time coordination and manages access on a protected basis for priority users while simultaneously supporting coexistence among secondary users.”
It's difficult to gauge how the citizens broadband radio service launch has gone so far. In September, the FCC, in docket 15-319 cleared Amdocs, CommScope, Federated Wireless, Google and Sony to start initial commercial deployment (ICD) in the 3.5 GHz band, but the companies aren’t required to publicly report numbers. CBRS Alliance President Dave Wright of CommScope told us initial numbers are proprietary, but CBRS is moving forward as expected with full-scale launch imminent. “I continue to be extremely excited,” Wright said.
NTIA reported $98.2 million in initial estimated sharing costs in the citizens broadband radio service band, as required by law, six months before the June auction of priority access licenses. OMB reviewed the estimates, NTIA said in the report released Monday. It's sending the numbers to the House and Senate commerce committees and appropriators and the Comptroller General, NTIA said. The Defense Spectrum Organization reported $48.4 million in costs and the Navy $30.4 million. The Air Force reported $5.1 million and the Army $12 million. NTIA provided the estimates even though the FCC said in September the 3.5 GHz band isn’t subject to Commercial Spectrum Enhancement Act reimbursement requirements (see 1909270059). The FCC and NTIA didn’t comment. NTIA says in a footnote the band contains “'eligible frequencies’ as described in Section 113(g)(2) of the NTIA Organization Act.”
Oil and gas producer Oxy, and subsidiary Anadarko, asked the FCC to extend until Jan. 8, 2023, licenses that fall under the citizens broadband radio service transition. The licenses cover leases in New Mexico, Texas, Utah, Colorado and elsewhere in the Gulf of Mexico. That date is when its last license expires, Oxy filed in docket 18-353. The companies “rely heavily on the 3650-3700 MHz band to provide critical monitoring and automation for oil and gas production systems,” Oxy said: “The 3650-3700 MHz networks that the Parties have operated on for the last nine years support telemetry and pipeline measurement data systems."
Commissioners approved an NPRM 5-0 on clearing 3.1-3.55 GHz, seen by some as a sleeper item with big implications. The item sparked a debate among members on whether the FCC is doing enough on mid-band spectrum. Senate Appropriations Financial Services Subcommittee Chairman John Kennedy, R-La., sat through 90 minutes of the meeting, signaling his ongoing concerns about setting rules for an upcoming auction of the 3.7-4.2 GHz C band.
The expected January draft order establishing a C-band spectrum auction method might also lay out an incentive payment scheme for the spectrum's stakeholders, such as satellite and earth station operators, said wireless and industry experts and watchers Tuesday evening at an FCBA CLE. But the FCC incentive regime the agency lays out might not be the final word. The chairman's office didn't comment Wednesday.
On the cusp of an expected boom, commercial space sector worries range from a space business "bubble" to outdated rules regimes that require replacing and the need to show investors regulatory burdens are waning, said corporate and government space executives Tuesday at a U.S. Chamber of Commerce event. FCC Chairman Ajit Pai said the agency is committed to matching the tempo of the commercial satellite industry and avoiding a "Byzantine approval system" that could be a regulatory bottleneck. He remains concerned about prospects for orbital debris. His prepared remarks were later posted.