Vehicle communication system

摘要

A vehicle communication system (100) comprises a base station (104) positioned in the vehicle (102) and a mobile communication unit (122). The base station (104) comprises a first transmitter for transmitting a signal to the mobile unit (122) and a first receiver for receiving an authentication signal from the mobile unit (122). The base station (104) is configured to track a position of the mobile unit with respect to the vehicle based on a time of flight of a communication between the mobilecommunication and the base station, to receive a subsystem status signal relating to performance of a monitored vehicle function and to determine, based on the subsystem status signal, a monitored function status relating to the monitored vehicle function. The base station (104) can output a status update signal for receipt by the mobile unit (122) in dependence on the position of the mobile communication unit (122).