Tech Companies at Odds With SiriusXM Over 6 GHz Coexistence Study Claims
A group of tech companies and SiriusXM are butting heads over a technical study on coexistence in the 6 GHz band. Apple, Broadcom, Cisco, Facebook, Google, Hewlett Packard Enterprise, Intel, Marvell Technology, Microsoft and Qualcomm in docket 17-183 Friday said…
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Sirius criticisms of the RKF Engineering study actually confirm the study in some parts and don't provide reasonable alternatives to the assumptions in others. Apple and the others said the RKF study -- looking at the 5925-6425 MHz band -- includes 12 times as many terrestrial links as the band, including Sirius feeder links, so that company confirms its uplink operations are even less vulnerable to terrestrial noise than the one with the representative system characteristics RKF analyzed. The tech companies dismissed Sirius claims the 6 GHz band will be used more heavily than the 5 GHz and 2.4 radio local area network, saying the satellite-radio provider doesn't understand how radio resource management algorithms of managed and unmanaged RLAN deployments work. Sirius outside counsel didn't comment Friday. The company has said satellite digital audio radio service in some parts of the country is subject to downlink frequency band interference, leaving it with no margin for tolerating additional interference, and big RLAN device deployments expected over the next seven years would just worsen the problem.