Blue Sky Criticizing Globalstar's Critique of Microsoft Study

Globalstar's critiques of Microsoft's warnings of interference to its Xbox 360S wireless controllers from the satellite company's broadband terrestrial low-power service (see 1610140057) are themselves somewhat problematic, Blue Sky Information Services said in an FCC filing posted Monday in docket 13-213. Globalstar and its Roberson & Associates consultant criticized the Microsoft testing regimen for not using industry standard interference measurement methodologies, but it was a similar "'worst case' test regime" Globalstar used in the past when pointing to interference concerns about Iridium's use of the L-band, Blue Sky said. It said Globalstar arguments to the contrary, the 2483-2500 MHz band is fully utilized, with those users including unlicensed consumer products that rely on a low-noise environment in the 2473-2484 MHz band. Given the massive Globalstar investment in satellite infrastructure, the FCC's priority arguably should be "the regulatory barriers that have prevented the promise of [the ancillary terrestrial component (ATC) of its mobile satellite service] from reaching fruition," Blue Sky said, saying that would mean "providing full, un-gated ATC authority in the 2484-2500 MHz spectrum." Globalstar didn't comment.