In critical task scenarios, MiniRapid system has been developed to realize rapid construction of on-site network. Integrating the functions of base station, core network, dispatching system, etc., MiniRapid system is characterized by integration and miniaturization and suitable for scenarios requiring rapid deployment, for example, scenarios where vehicles are difficult to access but rapid deployment can be realized by carrying the system, so as to meet the needs of on-site communication, command and dispatching. MiniRapid system supports individual carrying and onboard deployment, and provides broadband trunking communication services such as trunking dispatching and data transmission for the task site.