Optus will roll out a second type of 4G network across four capital cities on Friday that it claims can deliver faster video streams and more consistent data download speeds. The new "4G Plus" network is the only mobile broadband network in Australia to use "time division" technology - known as TD-LTE - and follows a Canberra-based trial that started in May. The 4G networks currently operated by Telstra, Vodafone and Optus all use "frequency division" (FD-LTE) technology.

http://www.smh.com.au/digital-life/mobiles/optus-rolls-out-new-4g-network-20130913-2to95.html