Charter Warns of C-Band Threat to CBRS, Absent Mandatory TDD
Charter Communications said a new technical analysis shows C-band operations are an interference threat to licensed and unlicensed use of the nearby citizens broadband radio service band. “The level of interference that will be experienced by CBRS could result in…
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degradation and devaluation of this valuable mid-band spectrum, undermining the competition and innovation that will only continue to grow and flourish in this spectrum band,” Charter said in calls with FCC staff. But Charter said the FCC could solve problems by requiring C-band licensees to make time division duplexing (TDD) available to CBRS licensees and users upon request: “Mandating TDD synchronization is critical because there is no assurance that larger carriers will voluntarily work cooperatively with new entrants and smaller carriers to address this problem and resolve interference for all carriers.” Charter spoke with staff from the Wireless Bureau and Office of Engineering and Technology and aides to Commissioners Mike O’Rielly and Geoffrey Starks, said a filing posted Friday in docket 18-122.