1 Scope

7 Network Function Services

6.6 Procedures for Service Authorization to NG-RAN

6.4 5G ProSe Direct Communication

6.5 5G ProSe UE-to-Network Relay Communication

6.3 5G ProSe Direct Discovery

6.1 Control and user plane stacks

6.2 Procedures for Service Authorization and Provisioning to UE

4 Architecture model and concepts

5 High level functionality and features