scope:

The 5G messaging service is an upgrade of the short message service (SMS). It is one of the basic telecommunication business services and includes the short message service (SMS) defined in 3GPP and the rich communication service (RCS) defined in GSMA. Especially, it supports messages between persons or between applications and persons, and it also supports various media (e.g., long text, picture, video, audio, file and position) in the message. This Recommendation describes security requirements that could mitigate the security threats and challenges of the 5G messaging service. This Recommendation provides the security requirements for the 5G messaging service, including access security requirements, management security requirements and control security requirements for 5G messaging service. This Recommendation also describes the functional differences between the security requirements for 5G messaging service those of 4G/3G/5G/WLAN.