LTE Cat. M
LTE Machine-to-Machine (LTE-M) is a cellular technology developed from LTE, which is introduced as low-cost LTE (LC-LTE) in 3GPP Release 12 specifications and LTE enhanced MTC (eMTC) in Release 13. LTE-M is specifically designed for the needs of IoT applications through an existing carrier wave. eMTC provides the broadest range of IoT capabilities, delivering up to 1 Mbit/s of throughput while utilizing just 1.4 MHz of bandwidth. It is designed to fully coexist with the existing LTE infrastructure. In the continuous evolution of LTE, the latest eMTC and NB-IoT further optimize the system cost, enhance endurance, and expand coverage. The key capability of eMTC is to support mobility and can be located at a cost of only 25% of the Cat1 chip, which is four times higher than the GPRS rate.