3GPP Rel. 12 & 13 provide natural evolution of existing networks & licensed spectrum to accommodate low bandwidth massive machine type of communication (MTC) requirements with introduction of Cat 0 & Cat M. Main directives introduce reduction in modem costs (by reducing modem complexity), long battery life (10 years by Enhance Power Save Mode (PSM)) and improved coverage (~15dB improvement for deep indoor coverage and D2D extension). In cooperation with Nokia and Intel, Ericsson is working on next LTE generation called Narrow-Band Long-Term Evolution (NB-LTE). The main NB-LTE pillars are Compatibility (operates as one network), Scalability (in-band and stand-alone deployment), Future proof (re-using existing standardization and devolvement valid for both LTE and NB-LTE) and Fast time to market (targeting 2017 as commercial deployment and build upon Rel-12/13 MTC enhancements). In addition to that Ericsson has been developed Lean Carrier by introducing 5G ultra-lean design in nowadays LTE commercial deployment. Lean Carrier minimize any transmission not directly related to delivery of user data (and consequently reduce interference). By introduction of higher encoding schemes (256QAM) the network can be further utilized for improving performance and application coverage.