Patent attributes
A communication system includes a seat unit configured to be mounted on a seat of a vehicle and to receive power supply from a battery to operate, and a vehicle unit configured to wirelessly communicate with the seat unit. The vehicle unit includes a determination section configured to determine whether communication with the seat unit is necessary, and a command transmission section configured to transmit to the seat unit a transmission command requesting the seat unit to transmit information on an electronic device mounted on the seat during a period in which the determination section determines that the communication with the seat unit is necessary. The seat unit is configured to transmit the information on the electronic device upon receipt of the transmission command.