COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND CONTROLLER

摘要

A communication system includes checking means for performing a check to detect whether a mobile device carried by a user of a vehicle is in the vehicle via wireless communication between an onboard device and the mobile device when a door of the vehicle has changed from being open to being closed; detecting means for detecting an operating state of an onboard electrical load when the check is performed by the checking means; and changing means for changing a maximum value of a number of rechecks, which is the number of times the check is allowed to be repeatedly performed by the checking means, according to the operating state of the onboard electrical load detected by the detecting means, when it has not been detected that the mobile device is in the vehicle by the check performed by the checking means.