Do you charge for Beidou SMS?

The passive positioning, navigation and timing services provided by Beidou are free. Short message communication service can be registered and applied by Beidou operator, and users can obtain Beidou operator information through network search.

Beidou satellite short message communication has the function of two-way digital message communication between user computers and between user computers and ground control center. The average user's computer can transmit 36 Chinese characters at a time, and the application for approval can transmit 120 Chinese characters or 240 codes. Short messages can not only communicate in two-way from point to point, but also provide command terminals for point-to-multipoint broadcasting, which provides great convenience for various platform applications.

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The short message communication of Beidou system refers to the two-way information transmission between Beidou ground terminal, Beidou satellite and Beidou ground monitoring station directly through satellite signals. The basic unit of communication is SMS (similar to mobile phone SMS), which is a functional feature attached to Beidou satellite navigation system.

The sending and receiving of Beidou short messages cannot be separated from commanders and user computers. As the name implies, the commander monitors the command and dispatch, and a commander can belong to several user computers.

With the command user machine as the core, a one-to-many communication network can be quickly formed, just like the countless stars in the sky (a little exaggerated). Moreover, SMS communication can not only be point-to-point two-way communication, but also provide one-to-many broadcast transmission for command terminals, which provides great convenience for various platforms.

Baidu encyclopedia-Beidou

People's Network-Positioning, Navigation, Timing and Short Message "Support" Beidou Application