多项选择题
A.缩短切换时延 B.减小TD网络的负荷 C.避免给信令流程引入更多的复杂性 D.保证终端能有充分的时间测量异系统信号
A.should be handed over to GSM B.should not behanded over to GSM C.shall be handed over to GSM D.shall not behanded over to GSM