A method of structuring communication data for in-vehicle information service

New in-vehicle information provision services have started according to the progress of data communication infrastructure surrounding vehicles, where the vehicles can connect to communication network outside. In such information services, a large amount of various data related to vehicles and/or drivers will be stored to the datacenter over the network in near future. Data and functions which are currently equipped with in-vehicle devices will be shifted to the datacenter, and these data and functions will be delivered to each of vehicles from the data center in need. In this paper, we propose a method of structuring such data based on ontological engineering approach for the purpose of providing drivers with useful information utilizing a large amount of communication data effectively. That is, we introduce a mechanism of providing drivers with information effectively, using the data structure which refers to ontology as a data schema. Also we describe about the information space with the contents of information to provide and the driver model with ontology.