Signal Tower, provided by China Mobile.China UnicomChina Telecom, etc.Internet Service ProviderA wireless signal transmitter that resembles a tower in appearance, hence named the Signal Tower. It is also a form of public wireless radio station, referring to a certain radio coverage area where communication is exchanged through a communication exchange center, andMobile Phone TerminalRadio transmitter and receiver stations for information exchange.Wireless CitySince its widespread adoption, the signal tower has also become the base point for transmitting city WIFI signals.