A.RRC Connection Setup Complete后 B.RAB Assignment Request后 C.RAB Assignment Response后 D.Radio Bearer Setup Complete后
A.UE B.NodeB C.RNC D.CN
A.語(yǔ)音業(yè)務(wù) B.視頻電話業(yè)務(wù) C.PS業(yè)務(wù)