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Content for TR 23.752 Word version: 17.0.0

1… 5… 6.10… 6.20… 6.30… 6.40… 7…

7 Overall Evaluation p. 161

7.1 Key Issue #1: ProSe Direct discovery p. 161

7.2 Key Issue #2: Support for NR PC5 ProSe communication p. 163

7.3 Key Issue #3: Support of UE-to-Network Relay p. 164

7.4 Key Issue #4: Support of UE-to-UE Relay p. 165

7.5 Key Issue #5: Support direct communication path selection between PC5 and Uu p. 167

7.6 Key Issue #6: Support direct communication path switching between PC5 and Uu p. 168

7.7 Key Issue #7: Charging for PC5 p. 168

7.8 Key Issue #8: Support of PC5 Service Authorization and Policy/Parameter Provisioning p. 169

8 Conclusions p. 170

8.1 Key Issue #1: ProSe Direct discovery p. 170

8.2 Key Issue #2: Support for NR PC5 ProSe communication p. 172

8.3 Key Issue #3: Support of UE-to-Network Relay p. 172

8.4 Key Issue #4: Support of UE-to-UE Relay p. 174

8.5 Key Issue #5: Support direct communication path selection between PC5 and Uu p. 175

8.6 Key Issue #6: Support direct communication path switching between PC5 and Uu p. 175

8.7 Key Issue #7: Charging for PC5 p. 175

8.8 Key Issue #8: Support of PC5 Service Authorization and Policy/Parameter Provisioning p. 175

A Layer 2 Architecture Reference Model p. 177

A.1 Introduction p. 177

A.2 Control and User Plane Protocols for Layer 2 UE-to-Network Relay p. 177

A.2.1 User Plane Protocol Stack p. 177

A.2.2 Control Plane Protocol Stack p. 177

A.3 Control and User Plane Protocols for Layer 2 UE-to-UE Relay p. 178

A.3.1 User Plane Protocol Stack p. 178

A.3.2 Control Plane Protocol Stack p. 178

B Architecture Reference Model for 5G ProSe Direct Discovery p. 180

B.1 Introduction p. 180

B.2 User Plane based Architecture p. 180

B.2.1 Description p. 180

B.3 Control Plane based Architecture p. 181

B.3.1 Description p. 181

$ Change history p. 183