NPSTC Agrees with Globalstar’s Spectrum Sharing Inquiry Request
Monday, July 09, 2018 | Comments

The National Public Safety Telecommunications Council (NPSTC) submitted comments supporting a Globalstar request for the FCC to issue a notice of inquiry (NOI) into the cause of Globalstar experiencing a 2 dB rise in the noise floor of its licensed 5 GHz spectrum. The FCC has allowed unlicensed use on a shared basis in the 5 GHz band, and Globalstar requested the NOI to gather additional information and help determine the cause.

The FCC issued a notice of proposed rulemaking in 2013 proposing to lift restrictions on outdoor operations and raise the power levels allowed for unlicensed operations in the 5 GHz unlicensed national information infrastructure (UNII) bands. In issuing its order in 2014, the commission adopted some, but not all, of Globalstar’s recommendations to help minimize interference to its licensed operations.

Globalstar indicated it is experiencing a 2 dB rise in the noise floor in the 5 GHz spectrum in which it holds a license for uplinks.

“We note that Globalstar service is used in both urban and wildland environments by first responders and that significant interference to that service could be detrimental to public safety,” NPSTC said. “Also, the commission increasingly expresses interest in spectrum sharing as a means to help satisfy the many types of communications that require access to spectrum. Sharing rules are often prospective when adopted, and an assessment of sharing provisions based on actual experience would be beneficial.”

NPSTC said the situation Globalstar described and the measurements it provided offers the commission an opportunity to assess sharing in a segment of the 5 GHz band and provide an after-action report on whether the sharing provisions enacted need to be changed to minimize interference going forward.

NPSTC’s full comments are here.

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