Terminal device, base station device, communication system, and communication method adapted to transmit location information

摘要

A retrieval unit retrieves location information. A storage stores location information transmitted from a transmitter. A derivation unit derives a distance of travel based on the location information stored in the storage and the location information newly retrieved by the retrieval unit. A controller causes the transmitter to transmit the location information newly retrieved by the retrieval unit, if the distance of travel exceeds a threshold value.

主权项

1. A terminal device comprising:
a retrieval unit that retrieves location information and time information; a communication unit that transmits the location information retrieved by the retrieval unit to a base station device and receives from the base station device a threshold value for a distance of travel determined by a traffic of communication; a storage that stores the location information transmitted from the communication unit and stores the retrieved time information; a derivation unit that derives the distance of travel based on the location information stored in the storage and the location information newly retrieved by the retrieval unit; and a controller that causes the communication unit to transmit the location information newly retrieved by the retrieval unit, if the distance of travel derived by the derivation unit exceeds the threshold value; if the distance of travel derived by the derivation unit is equal to or less than the threshold value, the controller stops transmission of the location information newly retrieved by the retrieval unit, and if a predetermined period of time has elapsed since the time indicated by the time information stored in the storage, the controller transmits the location information newly retrieved by the retrieval unit.