The Italian mobile market leader TIM (formerly Telecom Italia) has revealed that it will be implementing tri-band carrier aggregation on its Long Term Evolution Advanced (LTE-A) 4G network later this year to increase peak theoretical download speeds to up to 300Mbps. Lab trials of the technology have already been completed, using spectrum in the 800MHz, 1800MHz and 2600MHz bands, and field tests are now underway. The operator says speeds of up to 450Mbps were achieved in a lab environment. TIM is working with Ericsson and Qualcomm on the trials. According to TeleGeography’s GlobalComms Database, the cellco introduced 4G LTE services in November 2012 and went on to launch LTE-A, offering speeds up to 220Mbps, two years later.