Verizon, Ericsson, Qualcomm, and Federated Wireless demonstrated LTE Advanced carrier aggregation using Citizens Broadband Radio Service (CBRS) band 48 spectrum.
The demo, which was conducted in an Ericsson lab in Plano, Texas included the end-to-end CBRS communication flow, using 2×20 MHz LTE carriers on the CBRS band 48, and employing a 256 QAM modulation in the downlink. Ericsson provided the band 48 Radio Dot System and Domain Proxy for communication with Federated SAS. Qualcomm Technologies provided a Qualcomm Snapdragon LTE modem test device, and Federated Wireless provided the spectrum management service with their Spectrum Controller.
The CBRS band is made up of 150 MHz of 3.5 GHz shared spectrum which until now has been primarily used by the federal government for radar systems. The FCC has authorized shared use of the band with wireless small cells. Using the LTE Advanced feature of carrier aggregation, Verizon, Ericsson, Qualcomm Technologies and Federated Wireless were able to demonstrate LTE with carrier aggregation on this band and carry wireless traffic. Federated Wireless provided the Spectrum Access System to dynamically prioritize traffic within the FCC’s spectrum sharing framework for this band.
“The use of CBRS spectrum greatly advances our work in emerging spectrum bands. Verizon and our partners are leading the way in creating an ecosystem around the use of CBRS spectrum which will lead to greater capacity and speed for our customers,” said Nicola Palmer, Wireless Chief Network Officer for Verizon. “As industry leaders we work tirelessly to provide the best mobile experience available – that includes always innovating through new technologies and software platforms to better serve our customers.”
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