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Body Sensor Networks (BSNs) are used in the ubiquitous healthcare to measure human body functions like vital physiological data (e.g. heart beat). As the privacy-sensitive sensor data are transferred over the unreliable wireless connection and can be shared among various BSN applications, it is necessary to protect this data against potential threats. The purpose of this paper is to introduce an approach...
Optimizing performance of wireless sensor networks leads to trade-offs between local computation and communication. With the usage of on-node processing, the lifetime of the sensor nodes can be extended as raw data does not need to be sent out and logged by an external device. In this paper we present our approach for on-node processing of ECG signals to signal abnormal heart rate conditions. We develop...
The wireless standard IEEE 802.11e provides quality of service (QoS) support allowing prioritized sharing of the channel bandwidth by a set of competing devices. This is particularly relevant for wireless in-home networks that are used by the consumer electronics (CE) devices that provide various quality levels of multimedia streaming services. The IEEE 802.11e standard supports a cooperative distributed...
This paper discusses a link layer protocol that enhances performance of the Transmission Control Protocol (TCP) over a last-hop wireless network (LHWN) to make it more suitable for delivery of a live video with a short play out deadline. The presented protocol provides preference control of the transmission of video data within the network and it maximizes network goodput (the successfully transmitted...
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