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Ericsson and Qualcomm Demo Fall Back from LTE to GSM Networks
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Ericsson and Qualcomm have demonstrated the world's first Release 9 Circuit Switched Fall Back (CSFB) from LTE TDD (TD-LTE) to GSM, using a standard Ericsson radio base station RBS 6000 and an LTE multimode chipset from Qualcomm.
The technology offers LTE devices enhanced support for voice and SMS, using the broadly installed base of GSM networks. With this achievement, both LTE FDD and LTE TDD modes, using un-paired spectrum, could also make use of the broad GSM coverage.
Serge Willenegger, Vice President Product Management at Qualcomm, says: "The efficient support of voice and messaging services in LTE multimode smartphone platforms is instrumental in driving device economies of scale in key LTE TDD regions such as China. CSFB utilizes the same power-efficient, single radio chipset architecture from Qualcomm that has been widely proven for LTE FDD CSFB support."
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