当切换失败时,UE通过以下哪条信令进行RRC连接重建
A. RRC Connection Request
B. RRC Connection Reestablishment Request
C. RRC Connection Setup
D. RRC connect Reconfiguration
如下哪个频段只能用于TDD LTE室分覆盖
A. 1880-1900MHz
B. 2575-2635MHZ
C. 2320-2370MHz
D. 2010-2025MHz
基于竞争的随机接入竞争解决对用下面哪条信令
A. RRC Connection Request
B. RRC Connection Setup
C. RRCConnection Setup Complet
D. RRC Connection Reconfiguration
ATTACH过程中RRC建立的原因
A. Mo-Signaling
B. Mo-data
C. Mt-access
D. Emergency