5G学习笔记之F1AP
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2022-03-27 21:29:33
参考资料:3Gpp 38.473我就是个协议的搬运工~~~1. F1AP服务NGAP提供gNB-CU节点与gNB-DU节点之间的信令服务。服务分为两类:非UE相关服务:在gNB-CU与gNB-DU之间建立F1接口实例。UE相关服务:为UE接入核心网提供信令和数据连接。2. F1AP一般过程分类(1)F1AP一般过程按是否有响应,可分为两类:Class 1......
参考资料:3Gpp 38.473
我就是个协议的搬运工~~~
1. F1AP服务
F1AP提供gNB-CU节点与gNB-DU节点之间的信令服务。服务分为两类:
- 非UE相关服务:在gNB-CU与gNB-DU之间建立F1接口实例。
-
UE相关服务:为UE接入核心网提供信令和数据连接。
2. F1AP一般过程分类
(1)F1AP一般过程按是否有响应,可分为两类:
- Class 1:应答类消息,需要等待响应消息。
一般过程 | 发起消息 | 成功响应 | 失败响应 |
---|---|---|---|
F1 Setup | F1 SETUP REQUEST | F1 SETUP RESPONSE | F1 SETUP FAILURE |
Reset | RESET | RESET ACKNOWLEDGE | |
gNB-DU Configuration Update | GNB-DU CONFIGURATION UPDATE | GNB-DU CONFIGURATION UPDATE ACKNOWLEDGE | GNB-DU CONFIGURATION UPDATE FAILURE |
gNB-CU Configuration Update | GNB-CU CONFIGURATION UPDATE | GNB-CU CONFIGURATION UPDATE ACKNOWLEDGE | GNB-CU CONFIGURATION UPDATE FAILURE |
UE Context Setup | UE CONTEXT SETUP REQUEST | UE CONTEXT SETUP RESPONSE | UE CONTEXT SETUP FAILURE |
UE Context Release (gNB-CU initiated) | UE CONTEXT RELEASE COMMAND | UE CONTEXT RELEASE COMPLETE | |
UE Context Modification (gNB-CU initiated) | UE CONTEXT MODIFICATION REQUEST | UE CONTEXT MODIFICATION RESPONSE | UE CONTEXT MODIFICATION FAILURE |
UE Context Modification Required (gNB-DU initiated) | UE CONTEXT MODIFICATION REQUIRED | UE CONTEXT MODIFICATION CONFIRM | UE CONTEXT MODIFICATION REFUSE |
Write-Replace Warning | WRITE-REPLACE WARNING REQUEST | WRITE-REPLACE WARNING RESPONSE | |
PWS Cancel | PWS CANCEL REQUEST | PWS CANCEL RESPONSE | |
GNB-DU RESOURCE COORDINATION | GNB-DU RESOURCE COORDINATION REQUEST | GNB-DU RESOURCE COORDINATION RESPONSE |
- Class 2:通知类消息,无响应消息。
一般过程 | 消息 | 作用 |
---|---|---|
UE Context Release Request (gNB-DU initiated) | UE CONTEXT RELEASE REQUEST | |
Initial UL RRC Message Transfer | INITIAL UL RRC MESSAGE TRANSFER | |
DL RRC Message Transfer | DL RRC MESSAGE TRANSFER | |
UL RRC Message Transfer | UL RRC MESSAGE TRANSFER | |
UE Inactivity Notification | UE INACTIVITY NOTIFICATION | |
System Information Delivery | SYSTEM INFORMATION DELIVERY COMMAND | |
Paging | PAGING | |
Notify | NOTIFY | |
Error Indication | ERROR INDICATION | |
PWS Restart Indication | PWS RESTART INDICATION | |
PWS Failure Indication | PWS FAILURE INDICATION | |
gNB-DU Status Indication | GNB-DU STATUS INDICATION | |
RRC Delivery Report | RRC DELIVERY REPORT |
(2)F1AP一般过程按功能分类,大致可以分为以下6类:
功能 | 过程 |
---|---|
接口管理 | Reset F1 Setup Error Indication gNB-DU Configuration Update gNB-CU Configuration Update gNB-DU Resource Coordination gNB-DU Status Indication |
UE上下文管理 | UE Context Setup UE Context Release Request (gNB-DU initiated) UE Context Release (gNB-CU initiated) UE Context Modification (gNB-CU initiated) UE Context Modification Required (gNB-DU initiated) UE Inactivity Notification Notify |
RRC消息转发 | Initial UL RRC Message Transfer DL RRC Message Transfer UL RRC Message Transfer RRC Delivery Report |
告警消息 | Write-Replace Warning PWS Cancel PWS Restart Indication PWS Failure Indication |
系统消息 | System Information Delivery |
寻呼 | Paging |
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