Study on security aspects of single radio voice continuity from 5G to UTRAN
The present document studies the security aspects of single radio voice continuity from 5G to UTRAN CS. In particular, the goal of the present document is to study the impacts on 3GPP security architecture which may result from 5GS to UTRAN CS voice continuity, e.g. security context mapping from 5G and UTRAN, security procedure for the emergency call, etc.