Shanghai Mobile, a subsidiary of China Mobile, deployed an intraband TD-LTE-Advanced small cell carrier aggregation in its commercial network, reports Telecompaper.com on July 16, 2015. This is a world first, the company said. The technology is being shown live at Mobile World Congress Shanghai 2015 using Nokia Flexi Zone Base Station connected to the operator's network to achieve 220 Mbps peak downlink data transmission rates. The live demo at Shanghai New International Expo Center (Sniec) shows the commercial feasibility of aggregating TD-LTE carriers on small cells. Peak data transmission rates of 220 Mbps allow a user to download a 30-minute full-HD video in less than 25 seconds.