Nokia Siemens Networks has announced that it has achieved 56 Mbps peak upload throughput in a TD-LTE network using its commercial 4G base station with multiple antenna technology and a single 20 MHz carrier. 

This TD-LTE uplink throughput was reached in a test network in Hangzhou, China using company's Flexi Multiradio 10 Base Station. Single User Multiple Input Multiple Output (SU-MIMO) technology, which was applied for the uplink traffic, was one of the keys to reaching the throughput speed using a single carrier.