The LTE-Advanced(LTE-A) builds on its predecessor, Long Term Evolution(LTE) or commercially known as 4G LTE, enabling Mobile Operators to deliver data download speeds of up to 1Gbps by leveraging Carrier Aggregation and the use of the multiple-input, multiple-output (MIMO) technology.
The LTE-A is deployed by Mobile Operators via combination of multiple bands of spectrum in their networks and is aimed primarily towards increasing their 4G network capacity.