An information distribution apparatus creates data to be simultaneously distributed, further adding to the data an identifier which indicates that the data is distributed by a broadcast service, and adding billing class information in accordance with the data amount, and transmits it; a mobile terminal receives the data, creates a reception confirmation message if it is determined from the identifier added to the received data that the received data is distributed by a broadcast service, and further adds the identifier and the billing class information added to the data to the reception confirmation message to transmit it to a billing-information generation apparatus and the information distribution apparatus; and the billing-information generation apparatus generates billing information based on the billing class information added to the reception confirmation message if it is determined from the identifier added to the reception confirmation message that the data is distributed by a broadcast service.