GSMA Urges Regulator Caution for D2D Using Wireless Spectrum
Regulators "may need to define cautious regulatory frameworks" for direct-to-device (D2D) service using terrestrial mobile spectrum to protect incumbent services there, GSMA said in a paper Friday. It said one option for regulators is for D2D operations to protect existing services in accordance with ITU's radio regulations, with D2D operating on a no-interference/no-protection basis. Another option is creating secondary allocations in certain mobile bands, along with some conditions to ensure that D2D operations don't cause harmful interference to terrestrial mobile.
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GSMA advised against granting separate licenses to D2D operators for the same frequencies and areas as existing terrestrial licenses. That approach "would undermine the regulatory ecosystem" that supports mobile terrestrial service.
The 2027 World Radiocommunication Conference will try to agree on internationally harmonized coexistence parameters between terrestrial mobile and D2D services when using adjacent spectrum or the same frequencies in adjacent bands, GSMA said. Until then, regulators may need to define specific national arrangements to let mobile network operators share spectrum with D2D satellite operators, it added.
The paper also argued that proposed spectrum allocations for mobile satellite service (MSS) at WRC-27 must protect terrestrial mobile networks. The bands being considered for MSS are 1427-1432 MHz, 1645.5-1646.5 MHz, 1880-1920 MHz, 2010-2025 MHz and 2120-2170. All of them except 1645.5-1646.5 MHz have a terrestrial mobile identification, GSMA said.