A study of content data distribution and management mechanism for telematics

Recently, Web-based contents distribution services have become more important in mobile communications, including the telematics field. In current Web-based systems, a thin client-server model is a mainstream in which application processes are centralized and executed at servers. However, as the volume of data increases and higher quality of service is demanded, it becomes a significant problem how to provide such services from servers to users through wireless links which are not always available. In order to resolve the problem for contents distribution services to mobiles, a thick client-server model, in which processes are distributed and executed at clients, is considered to be effective. We propose and discuss a Web-based thick client-server model applicable to telematics services. A mechanism for a data distribution and management system is described, which is necessary for Web-based content distribution. An experimental platform is built, and the proposed mechanism is implemented and evaluated on it. According to experimental results, the proposed method, in which meta data is separated from content data and transferred to clients through different routes, achieves sufficient performance for these services.