Massive Machine Type Communications (mMTC) is one of the three defining features of 5G. The focus of mMTC is to provide connectivity to a large number of devices that transmit a sporadically low amount of data and should have no delay. The mMTC devices are expected to have a very long battery life. A unique feature of this category is that the mMTC devices will be extremely varied in terms of capabilities, cost, energy consumption and transmitting power.