The LTE SAE Trial Initiative (LSTI), a group of LTE suppliers and operators pushing the development of a global LTE ecosystem, is talking about its plans for interoperability to make sure a wide range of LTE devices work on all LTE networks globally. As a first step, a common set of features for Frequency Division Duplex (FDD) and Time Division Duplex (TDD) equipment is being defined to enable interoperability tests between devices and infrastructure. Article