• The approved plan starts a 60-day congressional review before OMB can release Spectrum Relocation Fund money for agency studies
  • The studies will examine whether commercial licensed use can coexist with federal systems or would require relocation and protection measures

The fact

The National Telecommunications and Information Administration has sent Congress a plan to study whether the 4.4–4.94GHz band could support commercial licensed use. The relevant commerce and appropriations committees now have 60 days to review the plan before the Office of Management and Budget can release funding from the Spectrum Relocation Fund.

The money would allow federal agencies operating systems in the band to carry out engineering studies and assess how those systems could be protected. The 4.4GHz study forms part of a wider programme that also covers the 1.6GHz, 2.7GHz and 7GHz bands. The move does not reallocate the spectrum, set commercial operating rules or authorise an auction. Any further action will depend on whether the studies identify frequencies that can be shared, cleared or repurposed under workable technical conditions.

The assessment

The study plan creates a route for federal agencies to examine the 4.4–4.94GHz band with government funding. After the congressional review, OMB can release the money. Agencies using the band would then need to identify their systems, set interference limits and decide whether commercial services could share the spectrum or whether some federal operations would have to move.

The size of the band alone tells operators little about its commercial use. They still need to know how much spectrum would be available, where it could be used, what power limits would apply and how long any relocation would take. Restrictions around federal sites could leave operators with uneven coverage or limited deployment options. For BTW readers, the 4.4GHz band cannot yet be treated as future mobile capacity. Its value will depend on the access conditions produced by the engineering studies.

What watch

Watch for OMB to release the study funding and for NTIA to publish a timetable. The most useful findings will cover available bandwidth, federal-system locations, interference limits, exclusion zones and whether sharing or relocation is required. These details will determine whether the FCC has a workable basis for commercial rulemaking.