The Evolved Packet system – in daily life usually referred to as LTE or 4G – has successfully helped operators cope with the ever-increasing volumes of data traffic during the past decade. The LTE radio access network (officially called E-UTRAN) is based on OFDM and provides high capacity and peak bit rates using clever radio features such as multi-antenna technologies (MIMO).
Combined with the 4G core network (Evolved Packet Core) we also get proper support for real-time services over IP, e.g. VoLTE. Over the years, the LTE system has been enhanced and improved in order to handle IoT type of traffic. Those enhancements – called NB-IoT and LTE-M – allow for huge numbers of connected things with typically very different traffic requirements than regular smartphones.
LTE Physical Layer
3GPP Mobile Systems Overview (2 days)
3GPP Mobile Systems Overview (4 days)
SS7 Signalling in Mobile Networks
LTE/EPC System Overview
Diameter in 3GPP Networks
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More than 300 mobile operators and enterprise companies