Optus Introduces World’s First TD-LTE Advanced Carrier Aggregation Network

Australia’s Optus has successfully begun testing the future of its 4G Plus network by activating the world’s first TD-LTE Advanced carrier aggregation. Optus announced it achieved single user peak speeds of over 160 Mbps on its commercial 4G Plus network in early December.

This announcement follows earlier tests of the potential of the 4 G Plus networks, that demonstrated a site throughput of over 500 Mbps, when utilizing the bulk of Optus’ 2300 TD-LTE spectrum.

“This is the first time in the world that 4G carrier aggregation has been introduced into a live TD-LTE network; not in a lab, but on a fully operational, commercial network,” said Vic McClelland, Managing Director of Optus Networks.

“Our abundant spectrum holdings in the 2300 MHz band; new technologies like carrier aggregation; and our 4G Plus TD-LTE network are the foundations of the Optus network of the future.”

When testing the future of its 4G Plus network at its test facility in St Marys, west of Sydney, Optus achieved a throughput of 520 Mbps, by combining four 20MHz channels of the 2300MHz spectrum band into 80MHz.

Optus activated LTE-Advanced carrier aggregation on its 4G Plus network in Melbourne by joining two 20MHz channels together on its 2300MHz 4G Plus spectrum. This kind of carrier aggregation is capable of delivering a theoretical maximum speed of up to 220Mbps to a single user on compatible mobile devices. In initial testing, peak speeds of over 160Mbps to a single device have been achieved.

“In Melbourne, we’ve paired two channels in the same frequency band, on our 4G Plus network, which we expect to provide the consistent speed experience that customers want and expect from 4G networks of the future,” Mr McClelland said.

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