Globalstar Counters Additional Test Claims for TLPS From CableLabs, NCTA
Globalstar countered CableLabs and NCTA claims (see 1504230054) about Globalstar's terrestrial low-power service (TLPS) demonstrations, in an ex parte notice posted at the FCC Friday in docket 13-213. The compatibility demos confirmed that TLPS will be a "good neighbor" to…
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Wi-Fi operations in the 2.4 GHz unlicensed band, including IEEE 802.11 Channel 11, Globalstar said. CableLab's demo was flawed, it used an unrealistic equipment setup and it didn't demonstrate negative effects from TLPS on the adjacent Wi-Fi band, Globalstar said. "The Commission should give no weight to this contrived attempt to produce a detrimental impact on Wi-Fi." Globalstar said CableLabs didn't submit all of its test results to the commission and instead selected "specific data points that purportedly show a negative effect on Wi-Fi Channel 11," it said. The commission shouldn't require additional tests for every deployment scenario possible under its proposed TLPS rules because it would be "bad policy and bad precedent," Globalstar said. The commission's Part 15 rules don't protect unlicensed services from interference, it said. CableLabs wants to test five to 10 other Wi-Fi devices with TLPS for interference issues for a "representative sample," said Rob Alderfer, CableLabs principal strategic analyst, Friday. “There’s a wide range of equipment that is out there in the Wi-Fi ecosystem today,” he said. “We’d want to look at different grade access points on the Wi-Fi and TLPS side and different types of client devices.” CableLabs offered its radio frequency chamber and an outdoor residential environment to test real-world impacts of TLPS, Alderfer said. “We’re happy to participate in other venues as well,” he said. “We’re looking to be a technical resource in this process.”