A.TCP
B.UDP
C.SCTP
D.MTP2

A.Insert Subscriber data
B.Update Location answer
C.Modify bearer request
D.Create session Request

A.UE->eNodeB->SGW->PGW->PDN
B.UE->eNodeB->MME->PGW-PDN
C.UE->eNodeB->SGW->MME-PGW->PDN
D.UE->eNodeB->SGW->HSS->PGW->PDN

A.S2a
B.S101
C.SWn
D.Gxa

A.DNS
B.AAA
C.SGSN-MME
D.SGW

A.返回IDLE
B.判定无线链路失败
C.触发切换
D.触发RACH流程

A.5
B.7
C.15
D.21

A.停止DurationTimer
B.启动DurationTimer
C.启动drx-RetransmissionTimer
D.停止drx-RetransmissionTimer

A.1
B.2
C.4
D.8

A.LTE基于HARQ功能实现快速重传
B.LTE MAC层将控制UE的移动性测量触发条件
C.上行调度命令中将携带HARQ进程号
D.MAC层的初始配置是由高层NAS消息配置的

A.RE
B.PRB
C.PBCH
D.PSS