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In this paper, we propose a method to construct scalable sensor data stream delivery system that guarantees the specified QoS of the delivery, i.e. Total reachbility to destinations even in a heterogeneous churn situation of the delivery server resources (nodes). There were some P2P-based methods to construct scalable and efficient sensor data stream system that accommodates different delivery cycles...
In recent years, sensor data stream delivery that collects sensor data periodically and delivers successively has been attracting great attention. As for this sensor data stream delivery, receivers are possible to require the same sensor data stream with different delivery cycles. Our researching team proposed methods to distribute communication loads by relay nodes in the case of delivering the sensor...
Due to the prevalence of sensors such as security cameras or environmental monitoring, sensor data stream delivery which means delivering the observed data continuously attracts great attention. Currently, the methods to distribute communication loads by relay nodes in the case of delivering the sensor data streams that have different data delivery cycles are proposed. However, in the existing methods,...
In the location dependent information services, not only estimation of the coordinates of a user (coordinate estimation), but also existence check of a user whether he/she exists in a certain area or not (area estimation) are required. However, no existing research on location estimation method using wireless communication treats both coordinate estimation and area estimation simultaneously with high...
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