Inefficient WiFi adapter of wireless mobile devices - Problem solving by artifacts prebuffering using mobile database cache and secured wireless connection

摘要

The paper deals with a problem of inefficient WiFi adapter of wireless mobile devices and a possibility to solve this problem by a prebuffering of selected artifacts. The basics are in a model of data prebuffering based system enhancement for locating and tracking users inside the buildings. The developed framework joins the concepts of location and user tracking as an extension for a new information system. The framework uses a WiFi network infrastructure to let a mobile device determine its indoor position. User location is used for data prebuffering and pushing information from server to user's PDA. All server data is saved as artifacts (together) with its position information in building. The accessing of prebuffered data on mobile device can highly improve response time needed to view large multimedia data. I tested our solution on created facility management information system with testing collection of about hundred large size artifacts. On mobile device the SQL server CE database is used as a cache. All data artifacts are transferred from PDPT server database to mobile embedded device database throw secured wireless connection standard EAP-TLS.