Daniel Dietterle

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Recent advances in wireless communication technology have opened the way for long-term health monitoring applications. In this paper, we introduce the BASUMA project, which develop novel biomedical sensors and a wireless communication platform that provides connectivity among these sensors. This enables new, intelligent medical applications. The design and(More)
In this paper, we present an efficient way how protocols modelled in SDL (Specification and Description Language) can be transformed into efficient implementations for resource-constrained wireless sensor nodes. We will show how SDL concepts such as processes, timers, or signals can be mapped to operating system concepts provided by the Reflex operating(More)
It is predicted that, in the next years, wireless sensor networks could be massively deployed in a wide variety of application areas, such as agriculture, logistics, automation, or infrastructure monitoring. An extremely low power consumption, high dependability, and low cost are common requirements for sensor nodes in all these applications. This can be(More)
We present a hardware/software implementation of the IEEE 802.15.3 MAC protocol. Processing-intensive and time-critical protocol tasks are handled by a protocol accelerator that is integrated on-chip with a 32-bit general-purpose processor in order to achieve a moderate (20–40 MHz) system clock frequency. This enables low-power wireless devices compliant(More)
Continuous monitoring and analyzing of vital signs is the key for detecting at an early stage when a patient's state of health changes to the worse, thereby preventing emergency cases, which are harmful to the patient and costly for the healthcare system. The BASUMA project is concerned with developing an energy-efficient and robust system-on-chip platform(More)
This work presents an architectural solution for the IEEE 802.11a MAC layer on-chip implementation. The complete implementation flow is presented as well as some unique solutions implemented using an architecture that exploits dedicated hardware for timing critical tasks. The system is completely integrated into a single chip and the implementation results(More)
In this paper we investigate the benefits of power gating in wireless sensor nodes operating at a very low duty cycle. It is shown that the static power loss in such a node is significant portion of the total power consumption. Therefore, we have defined power-gated wireless sensor node architecture and developed a power gating mechanism to reduce the(More)
In this paper, we present our behavioral SDL model for the IEEE 802.15.3 MAC protocol. The model was derived using an object-oriented approach based on the client/server paradigm and is divided into data path and control path subsystems. Within the model, there are different abstraction layers, each layer providing a welldefined set of services to the(More)
Wireless sensor networks have attracted much research effort in the past five years. With TinyOS, there exists a widely used, microthreaded operating system targeted for single processor sensor nodes. It requires only minimal processing and memory resources. Many research activities in the wireless sensor area focus on the design of efficient protocols in(More)