LightSquared proposed a solution to promote compatibility with GPS receivers...

of the 1526-1536 MHz portion of the L-band. It also filed a license modification application for the authority to begin deployment of a terrestrial network by proposing to “vacate its terrestrial use of 10 MHz of licensed downlink frequencies close to GPS … and to gain access to just 5 MHz of spectrum farther away,” it said. LightSquared said it submitted the filings to enable deployment of a 4G terrestrial broadband network that was stalled this year when interference issues were raised by the GPS community. The commission has proposed to yank a waiver the company had gotten earlier so it could build out the network for terrestrial and not satellite-only use. The company also said it would employ alternative spectrum comprised of a contiguous 10 MHz band at 1670-1680 MHz, “which would provide the needed coverage for its terrestrial network.” NTIA is aware of LightSquared’s interest in sharing the 1675-1680 MHz band with federal users, an NTIA spokeswoman said. The primary federal agency using this spectrum is the National Oceanic and Atmospheric Administration (NOAA), “which operates satellites and radiosondes in this band,” she said. “If requested by the FCC, NTIA will work with NOAA to evaluate LightSquared’s request as it affects federal government spectrum users."