I/Q data transport was tested in various combinations including multiple channels and carrier aggregation.

Specifically, it plans to use "carrier aggregation technology" to enable supplemental downlink capacity.

In time, carrier aggregation technology will be embedded in mobile devices, Mr Wright said.

Telstra's "carrier aggregation" device will provide peak download speeds of up to 150 megabits per second by the end of the year on mobile devices.

Optus markets LTE Carrier Aggregation as "4G Plus".

Most recent LTE speed increases have come via carrier aggregation, which essentially combines multiple chunks of spectrum across multiple antennas to improve bandwidth.

Carrier aggregation technology has been discussed as a technique to be used in the next generation of LTE, known as LTE-Advanced.

On 19 December 2013 Optus claims to set up the world's first TD-LTE Advanced carrier aggregation network.

Capable of carrier aggregation, the Snapdragon 800 processor is designed to allow LTE to be even faster by maximizing spectrum bandwidth to increase data speeds and reduce latency.

Downlink carrier aggregation named Dual-Cell HSDPA was already standardized in UMTS Release 8.

In September 2014, Optus launched LTE Carrier Aggregation in Sydney, Melbourne, Brisbane and Adelaide.

Dual Cell (DC-)HSUPA is the natural evolution of HSPA by means of carrier aggregation in the uplink.

By using carrier aggregation and 4x4 MIMO, the Snapdragon X16 LTE modem can receive 10 unique streams of data using only three 20 MHz carriers.

Release 10, frozen in 2011, introduces to the standard several LTE Advanced features like carrier aggregation, uplink SU-MIMO or relays, aiming to a considerable L1 peak data rate increase.

South Korea has already announced such plans with SK Telecom, KT and LGU+ planning to offer a Samsung Galaxy S4 smartphone with carrier aggregation technology offering speeds of up to 150Mbps.

The company is investing £1.5 billion over three years to ensure its network can support more customers, and is also testing trial a 300Mbps network enabled by carrier aggregation, which combines spectrum from different bands to boost performance, speed and capacity.

With instantaneous RF bandwidths in excess of 40 MHz supported by CPRI v.4.2 interface up to 9.8 Gbps our RRH platforms are suited for IMT-Advanced applications including carrier aggregation."

By means of carrier aggregation, an LTE-Advanced or UMTS/HSDPA base station could use this spectrum to provide additional bandwidth for communications from the base station to the mobile device, i.e. in the downlink direction.