“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. Our abundant spectrum holdings in the 2300MHz band; new technologies like carrier aggregation; and our 4G Plus TD-LTE network are the foundations of the Optus network of the future,” said Vic McClelland, managing director of Optus Networks.
Before this TD-LTE-A test over a live network, Optus said it had tested the technology at its test facility in St. Marys, west of Sydney, achieving throughput of 520Mbps by combining four 20MHz channel cof the 2300MHz spectrum band.
In the mean time, based on the live network tests which took place in Melbourne, Optus explained that it had joined two 20MHz channels in the 2300MHz band together, with that level of carrier aggregation said to be capable of delivering theoretical maximum speed of up to 220Mbps to a single user on compatible mobile devices.
“Carrier aggregation is an LTE-advanced technology which combines multiple spectrum bands; it’s the technological equivalent of adding extra lanes to a highway, allowing for higher-speed data traffic. By combining two or more channels of carriers on existing live commercial LTE spectrum bands, Optus can dramatically increase throughput on its mobile data network,” Huawei Australia chief technology officer (CTO), Peter Rossi, said.
In real-life conditions, when many more people are using the network at the same time, the actual speed is likely to be slower than in any of the Optus tests.
Huawei said it expects to launch Cat-6 TD-LTE mobile broadband devices compatible with carrier aggregation in 2014.
Photo Credit: Aditya Sharma