a structure with devices for sending and receiving mobile phone signals

Knowing which cell tower handles the call gives a very rough guide to the caller's location. 知道哪个手机信号塔处理呼叫便可粗略得知打电话人的位置。

There were objections to the building of a new cell tower near the school. 有人反对在学校附近建立一个新的手机信号塔。