Sprint Corp’s deployment of dual-carrier 4G technology (also known as 2CC), using its 2500MHz former Clearwire WiMAX spectrum, is underway in a number of major markets across the country, according to an internal Sprint document posted on Reddit by a company employee. The CA deployment has reportedly seen Sprint bond two separate channels of 2500MHz spectrum to achieve theoretical downlink transmission speeds in excess of 100Mbps. TeleGeography notes that the speeds represent a big step up from the 60Mbps speeds delivered by the tri-band carrier aggregation (3C) ‘Sprint Spark’ network, which aggregates three 10MHz frequency blocks in the 800MHz, 1900MHz and 2500MHz bands.
Via its 2013 acquisition of sister company Clearwire, Sprint has an average of 120MHz of 2500MHz spectrum in 90 of the top 100 US markets. According to the document CA is live in 39 markets, though the precise scope of the rollout is unclear as the list includes whole states like Colorado and New Jersey, as well as cities such as Atlanta, Baltimore, Boston, Chicago, Cincinnati, Dallas, Houston, Indianapolis, Las Vegas, the Los Angeles metropolitan area, Milwaukee, Philadelphia and Washington, DC.
Despite the leak, Sprint has stopped short of confirming the reports, with spokeswoman Adrienne Norton telling Fierce Wireless: ‘We’re planning to talk about our carrier aggregation deployment on our [2Q15] earnings call’.