 GSM for Internet GSM/GPRS/EDGE technologies of Things) for the IoT segment 6.7 Internet of Things (IOT) Services The NB-IoT was developed with simplicity in mind, to be used in cheaper end-user equipment. It has low throughput and delay-tolerant applications (e.g. sensors as IoT devices). It supports bitrates of several tens of Kbit/s up to several hundreds of Kbit/s by using 180 kHz of bandwidth (which has size similar to GMS/GPRS/EDGE frequency carrier width). However, the NB-IoT was created to be deployed within existing LTE bands, by utilization of the spectrum between two "standard" adjacent LTE frequency carriers. Also, the NB-IoT can be used in its own standalone mode, thus providing easy migration path for the re-farmed GSM/GPRS/EDGE spectrum. So, due to its low price and affordability the NB-IoT is considered to be one of the "accelerators" for further explosion of the IoT services. The Extended Coverage Global System for Mobile communication for Internet of Things (EC-GSM-IoT) has been developed to be backwards-compatible and to be deployed into existing GSM/GPRS/EDGE networks as a software upgrade. So, it can be supported on existing GSM/GPRS/EDGE deployments by using the common GSM spectrum on 900 MHz and 1800-1900 MHz bands. However, the newer mobile IoT technologies, such as eMTC and NB-IoT, are further being developed in 5G standards, starting with 3GPP release 15 (completed in 2018) and further 3GPP releases. What about the QoS for IoT services? Bearing in mind that most IoT devices are con- nected via radio connections, one may expect that in future almost all such IoT devices will be connected via standardized mobile networks (e.g. 2.5G-5G), which provide IP connectivity, or via WiFi local access networks (where WiFi networks are connected to IP networks via fixed or mobile access networks). Since mobile networks include QoS solutions in all mobile generations (unlike WiFi), for IoT services that demand QoS support the main deployment method will be over the deployed mobile networks (e.g. LTE-A