我就是個協議的搬運工~~~f1ap提供gnb-cu節點與gnb-du節點之間的信令服務。服務分為兩類：
2. f1ap一般過程分類
（1）f1ap一般過程按是否有響應，可分為兩類：
一般過程
發起訊息
成功響應
失敗響應
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
一般過程
訊息作用
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一般過程按功能分類，大致可以分為以下6類： 功能
過程介面管理
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訊息**
initial ul rrc message transfer
dl rrc message transfer
ul rrc message transfer
rrc delivery report
告警訊息
write-replace warning
pws cancel
pws restart indication
pws failure indication
系統訊息
system information delivery
尋呼paging
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