Using Predictive Prefetching to Improve Location Awareness of Mobile Information Service

Mobile information services have to provide some degree of information adaptability onto the current service context, such as mobile user's location, network status. This paper deals with a predictive prefetching scheme for reducing the latency to get refreshed information appropriated on current location. It makes use of the velocity mobility model to exploit location knowledge about the terminal and/or user's mobility behavior. With considering the user's moving speed and direction, the prefetching zone has been proposed to effectively limit the prefetched information into the most likely future location context whilst to preserve the prefetching benefits. The proposed scheme has been evaluated with a simulator in the context adaptability point of view.