gNB-CU-CP: 控制單元控制面板，E1 (connnected with gNB-CU-UP)，F1-C (connnected with gNB-DU)
gNB-CU-UP: 控制單元用戶面板，E1 (connnected with gNB-CU-CP)，F1-U (connnected with gNB-DU)

1.gNB剝離開的架構圖

A gNB may consist of a gNB-CU-CP, multiple gNB-CU-UPs and multiple gNB-DUs;
gNB可以由一個gNB-CU-CP,多個gNB-CU-UPs多個gNB-DUs組成

The gNB-CU-CP is connected to the gNB-DU through F1-C interface;
gNB-CU-CP通過F1-C連接gNB-DU

The gNB-CU-UP is connected to the gNB-DU through F1-U interface;
gNB-CU-UP通過F1-U連接gNB-DU

The gNB-CU-UP is connected to the gNB-CU-CP through E1 interface;
gNB-CU-UP通過E1接口連接到gNB-CU-CP

One gNB-DU is connected to only one gNB-CU-CP;
一個gNB-DU僅連接一個gNB-CU-CP

One gNB-CU-UP is connected to only one gNB-CU-CP;
一個gNB-CU-UP僅連接一個gNB-CU-CP

NOTE1: For resiliency, a gNB-DU and/or a gNB-CU-UP may be connected to multiple gNB-CU-CPs by approriate implementation.
為了系統彈性，一個gNB-DU和一個gNB-CU-UP可能連接到多個gNB-CU-CP

One gNB-DU can be connected to multiple gNB-CU-UPs under the control of the same gNB-CU-CP.
一個gNB-DU可以在同一個gNB-CU-CP的控制下連接多個gNB-CU-UPs

One gNB-CU-UP can be connected to multiple gNB-DUs under the control of the same gNB-CU-CP.
一個gNB-CU-UP在同一個gNB-CU-CP的控制下可以連接多個DUs

NOTE2: The connectivity between a gNB-CU-UP and a gNB-DU is established by the gNB-CU-CP using Bearer Context Management functions.
注2：gNB-CU-UP和gNB-DU連接是使用gNB-CU-CP的承載背景管理功能建立的
NOTE3: The gNB-CU-CP selects the appropriate gNB-CU-UP(s) for the requested services for the UE.
gNB-CU-CP對用戶的請求服務會選擇合適gNB-CU-UP（可能不止一個，不同DU實現不同功能）
NOTE4: Data forwarding between gNB-CU-UPs during intra-gNB-CU-CP handover within a gNB may be supported by Xn-U.
在gNB內的gNB-CU-CP切換期間（不是只有一個嗎？？？），gNB-CU-UP之間的數據傳輸是通過Xn-U接口實現的

總結

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