Major function of BTS is to air the interface signaling

Question

It is familiar that the major function of BTS is to air the interface signaling. But why? Explain the reason in brief?

Answer 1

Mobile station is usually mobile in nature that is an advantage over PSTN network and in order to give connection to mobile station we employ radio resource (air) in order to give interface between the mobile and BSS. BTS is utilized, a BTS is accountable to cover the small geographical region termed cell.