Dave Mayo, the senior vice president of technology, strategy, finance and development at T-Mobile, revealed at Light Reading’s Backhaul Strategies for Mobile Operators event on Tuesday that T-Mobile plans to bring LTE-Advanced features to its 4G LTE network before the end of the year. The executive didn’t go into specifics, however Dan Jones of Light Reading speculates that T-Mobile will adopt a technique known as carrier aggregation that combines two or more separate radio channels to improve data speeds. Mayo noted that for now the company continues to be focused on upgrading its older network with LTE coverage, adding that T-Mobile is currently “upgrading about 37,000 of our 52,000 cell sites.”