Development of Contents-Oriented Wireless Communications Networks for On-Board Information Facilities in Inter-Vehicle communications

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The objective of this research project is to develop near-future typed adhoc networking technology for vehicles and mobile users without any base stations and information centers. In restricted area with almost 1 Km by 1 Km squared, we have pursued to realize advanced adhoc networking systems that enable vehicles, pedestrians, and PC mobile users in the area to communicate each other tightly and get some real-time hot information. We have proposed a new communications system named Contents-Oriented Communication (COC). In this system, any one can get their necessary information urgently whether they do not know where such information is or what kind information and/or ID the information is. We have developed the algorithms for that system, and verified the validity of the proposed systems by computer simulations and various experiments with three vehicles.As results of the researches we have had the following.1) We have developed VACSS (Vehicular Collision Avoidance Support System) by getting the location information of vehicles and exchanging those with each other.2) We have developed VPEC (Vehicle PEdestrian Communications) to enable some small pedestrian terminal to communicate with nearby vehicles directly.3) We have developed the real time traffic estimation system by using COC.4) We have developed the real time situation recognition algorithms when some tragic accidents like Earth-quake, Fires, Terrorist' bombing, Massacre shooting and so on happen. We call this kind of systems, EUC (Emergency Urgent Communications).