Abstract
We studied the middleware platform for USN (ubiquitous sensor network) for various types of sensor networks such as the Zigbee wireless sensor network (WSN), the CDMA cellular network, RFID and IP-USN based on the 6LowPAN. Our project is focused on sensor network abstraction for various USNs. We defined standard interfaces between USN middleware and USN networks as well as application services. We implemented several USN services such as u-Healthcare services to consider important issues such as QoS (quality of service) and real-time data analysis for QoS.
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