Excuse me, what is the principle of Unicom users sending short messages to mobile users through base stations?

The answer on the second floor is incorrect. Whether you receive a text message or make a phone call, as long as your mobile phone is turned on, it has been registered in the network. When you move, your mobile phone will constantly report your location to the network, so as long as you turn it on, you can always know where you are.

Ok, answer the landlord's question: your short message reaches Unicom's switching equipment through Unicom's base station, and then reaches the mobile switching equipment through the inter-network connection (that is, the connection between mobile and Unicom), and then the mobile network will look for the mobile phone of the person you sent, and then send the information to the other party's mobile phone through the mobile base station.

As long as the signal strength of the base station is not very bad, it will not affect the sending of short messages.

In addition, the capacity of the base station is determined by the carrier frequency of the base station (taking Nokia GSM equipment as an example, other equipment is not clear). The capacity of a carrier frequency is 8 users, which allows 8 users to talk at the same time.

I'm not sure about the text message. I haven't learned it. Ha ha. ..

However, this seems to be related to the capacity of the SMS gateway.