Section: 8.4.4.3 SN initiated SN Modification with SCG Activation or Deactivation
Content: Figure 8.4.4.3-1: SCG Activation or Deactivation in SN initiated SN Modification procedure 1. SCG is deactivated or activated. 2. The SN-CU-CP may send the BEARER CONTEXT MODIFICATION REQUEST message to the SN-CU-UP to notify the SCG activation or deactivation. 3. The SN-CU-UP sends the BEARER CONTEXT MODIFICATION RESPONSE message to the SN-CU-CP. 4. The SN-CU sends the UE CONTEXT MODIFICATION REQUEST message to the SN-DU to indicate the request of SCG activation or deactivation. 5. The SN-DU sends the UE CONTEXT MODIFICATION RESPONSE message to the SN-CU, indicates the SCG status. 6. The SN-CU-CP may send the BEARER CONTEXT MODIFICATION REQUEST message to the SN-CU-UP to notify the SCG status. 7. The SN-CU-UP sends the BEARER CONTEXT MODIFICATION RESPONSE message to the SN-CU-CP. NOTE 1: Step 6 and 7 may be skipped in case the SN-DU accepted the SCG activation or deactivation request. 8. The SN sends the SN Modification Required message to the MN, indicates the request of SCG activation or deactivation. 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. NOTE 2: Based on implementation, step 9 and 10 can be performed after step 11. 11. The MN sends the SN Modification Confirm message to the SN. NOTE 3: Step 8-11 are not performed in case the SN-DU rejected the SCG activation or deactivation request.