Study on evolution of Cellular Internet of Things (CIoT) security for the 5G System
The present document studies the following:
- Capture massive MTC related 5G requirements in other 3GPP documents and further analyse them from security point of view.
- Study security for supporting EPS CIoT/MTC functionalities in 5GS, e.g.:
- security for infrequent and frequent small data transmission
- security for inter-RAT mobility to/from NB-IoT or modifications in the EPC-5GC interworking security specific to CIoT.
- Study security enhancements based on the architectural study in TR 23.724 [2], e.g.:
- security for transport of user plane over 5G NAS; or
- termination of user plane security in 5GC.
- Study the security aspects of the architectural enhancements addressing the 5G service requirements in TS 22.261 [3] and TR 38.913 [4].
- Study the need for additional mechanisms to improve protection of the network from maliciously behaving IoT devices