Wireless communication system and control method of wireless communication system

A wireless communication system comprising a management device, an operator terminal, and at least one wireless communication terminal, wherein

• the management device comprising:
• a reception unit configured to receive, from at least one communication terminal having a first wireless communication system, an audio signal and position information by the first wireless communication system;
• a determination unit configured to determine whether or not a signal indicating an emergency situation has been received from the at least one communication terminal based on the audio signal of the communication terminal received by the reception unit;
• a decision unit configured to decide an influence range of the emergency situation based on a positional relationship of the at least one communication terminal when the determination unit determines that the emergency situation has occurred;
• a specification unit configured to specify a transmission destination communication terminal that is a transmission destination of a control signal including an emergency signal according to the emergency situation based on the influence range of the emergency situation decided by the decision unit;
• and
• a transmission unit configured to transmit, by the first wireless communication system, information determined by the determination unit to an operator terminal and the control signal to the transmission destination communication terminal specified by the specification unit;
• the operator terminal comprising:
• a communication unit configured to receive, by the first wireless communication system, the position information and the audio signal transmitted by the at least one wireless communication terminal and information on the transmission destination communication terminal specified by the specification unit in the management device, and to transmit, by a second wireless communication system different from the first wireless communication system, an audio signal of an operator of the operator terminal to the at least one wireless communication terminal;
• and
• a display configured to display the information on the transmission destination communication terminal;
• and
• the at least one wireless communication terminal comprising:
• a first communication unit configured to perform communication by the first wireless communication system;
• a second communication unit configured to perform communication by the second wireless communication system;
• and
• a controller configured to control the first communication unit and the second communication unit, wherein
• the first communication unit is further configured to transmit the audio signal to the management device to generate the control signal in the management device and receive the control signal from the management device;
• the controller is further configured to control the second communication unit based on the control signal;
• and
• the second communication unit is further configured to transmit/receive the audio signal to/from the operator terminal.