A Study of Robustness Enhancement Technique on P2P Sensor Data Stream Delivery System Using Distributed Hashing

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 data streams that have different data delivery cycles. However, in the previous methods, since the specific node builds delivery paths and notifies to related nodes, the assigned node is required to be updated when the node leaves. Therefore, in this paper, we propose a method that enhances the robustness of delivery system.