Section: 6.2.4 gNB-CU-UP ID
Content: The gNB-CU-UP ID is configured at the gNB-CU-CP and used to uniquely identify the gNB-CU-UP at least within a gNB-CU-CP. The gNB-CU-UP provides its gNB-CU-UP ID to the gNB-CU-CP during the E1 Setup procedure. The gNB-CP-UP ID is used only within E1AP procedures. NOTE 1: This identity is also used to uniquely identify the ng-eNB-CU-UP at least within an ng-eNB-CU-CP in case CP/UP separation is implemented in ng-eNB. NOTE 2: This identity is also used to uniquely identify the eNB at least within an eNB-CP in case CP/UP separation is implemented in eNB.