Chinese vendor ZTE and China's Ministry of Industry and Information Technology (MII) announced they have achieved what they call the world's first S1/X2 interface conformity test for TD-LTE--meaning that the TD-LTE system's wireless and core networks are fully compliant with 3GPP standards. The S1 interface communicates between the LTE base station and the evolved packet core (EPC) network and the X2 interface sits between base stations. Article