Section: 8.4.4.1 SN Addition with SCG Activation or Deactivation
Content: Figure 8.4.4.1-1: SCG Activation or Deactivation in SN Addition procedure 1. The MN sends the SN Addition Request message to the SN, indicates the request of SCG activation or deactivation. 2. The SN-CU-CP may send the BEARER CONTEXT SETUP REQUEST message to the SN-CU-UP to setup bearer context and notify the activation or deactivation of the SCG. 3. The SN-CU-UP sends the BEARER CONTEXT SETUP RESPONSE message to the SN-CU-CP. 4. The SN-CU sends the UE CONTEXT SETUP REQUEST message to the SN-DU to setup UE context and indicate the request of SCG activation or deactivation. 5. The SN-DU sends the UE CONTEXT SETUP RESPONSE message to the SN-CU, indicates the SCG status. In case SCG activation is requested, the SN-DU shall indicate SCG activated in the message. 6. The SN-CU-CP may send the BEARER CONTEXT MODIFICATION REQUEST message to the SN-CU-UP as described in clause 8.9.2 and may notify the SCG status if needed. 7. The SN-CU-UP sends the BEARER CONTEXT MODIFICATION RESPONSE message to the SN-CU-CP. 8. The SN sends the SN Addition Request Acknowledge message to the MN, indicates the SCG status. In case SCG activation is requested, the SN shall indicate SCG activated in the message. 9. The MN-CU-CP may send the BEARER CONTEXT MODIFICATION REQUEST message to the MN-CU-UP to notify the SCG status. 10. The MN-CU-UP sends the BEARER CONTEXT MODIFICATION RESPONSE message to the MN-CU-CP.