TraX: a device-centric middleware framework for location-based services

摘要: Location-based services turned out not to be the "next big thing" following success stories of GSM and SMS. The reasons for this are manifold range from inaccurate cellular positioning technologies a lack competition in field, both being closely related fact that is controlled by network-centric approach where mobile network operator has unique selling point making position data available third parties. However, things change: small, low-cost GPS receivers, either attachable devices or even integrated, enjoying great popularity since their recent inception expected become standard feature cell phones near future. In conjunction with packet services, they provide basis device-centric LBS platforms, can obtained directly device. article middleware TraX, which focuses particularly on management, advanced functions interrelating several targets, privacy protection, presented. Due its generic open design, TraX reused broad different LBSs thus fosters service diversity multiprovider environments, essential next generation