问题：

[多选] Which three statements are true about implementing wireless LANs in the network using Ciscodevices？（）

A . Antenna power is a relative value reference to dBi
B . LWAPP allows encrypted communications between lightweight access points and WLANcontrollers.
C . Characteristics of antennas are directionality， gain， and polarization
D . Power over Ethernet （PoE） is only available when a WLAN controller is integrated into thenetwork
E . The WLAN solution Engine （WLSE） is used to control lightweight access points
F . One of the advantages of the lightweight WLAN solution is that the devices act indepently