LightSquared Asks FCC To Develop GPS Standards To Prevent Interference
The embattled wireless company LightSquared formally asked the Federal Communications Commission on Tuesday to develop standards that would require global positioning system manufacturers to ensure their devices are compatible with transmissions from other networks.
LightSquared's bid to build a nationwide wireless network with spectrum near that used by GPS has been on hold after tests indicated its transmissions could interfere with the navigation systems. The company says the problem lies with GPS devices that should have been designed to filter out neighboring signals.
"It has become apparent that the commercial [GPS] industry has failed to design receivers that communicate with the U.S. GPS system in a manner that is compatible with the authorized use of adjacent spectrum bands," LightSquared wrote in documents filed with the FCC on Tuesday. "This failure has inhibited the deployment of licensed services in adjacent bands that would provide significant public interest benefits, such as increased competition."
While the FCC has traditionally relied on market forces to keep competing spectrum users from overlapping, LightSquared says this method has failed.
GPS manufacturers say it should be up to LightSquared to fix the problem because GPS devices were built with the expectation that the adjacent bandwidth wouldn't be used for a land-based network like LightSquared has planned.
"This latest filing yet again proceeds from the same false premises and claims that LightSquared has repeated ad nauseum in its ongoing effort to deny its obligation to avoid harmful interference to millions of government and private GPS users," Jim Kirkland, vice president at the GPS manufacturer Trimble, said in a statement. "LightSquared's continuing efforts to move the goal posts are too little, too late."
On Wednesday the House Transportation Subcommittee on Aviation plans to hold a hearing which could include the potential impact of LightSquared's plans on aviation navigation systems.

