Study on extended architecture support for Cellular Internet of Things (CIoT)
The present document studies and evaluates the architecture enhancement to support Cellular Internet of Things (CIoT). The scope includes NB-IoT, eMTC, and EC-GSM-IoT.
The study will consider architecture enhancements/simplifications in the following areas:
- Support of authorization of use of Coverage Enhancement functionality;
- Reliable communication service between UE and SCEF;
- Inter-RAT idle mode mobility support for NB-IoT;
- Review existing multicast/broadcast services architecture to ensure suitability for NB-IoT;
- Review existing Location services architecture to ensure suitability for UEs using Control Plane CIoT EPS optimisation;
- QoS differentiation between UEs using control plane EPS CIoT optimizations; and
- CN overload protection for UE supporting control plane EPS CIoT optimizations.