Michael Baar, Heiko Will, Jochen Schiller, Adam Dunkels,
Deadlock-free Resource Arbitration for Sensor Nodes,
In: 7. GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze", Berlin, Germany: Freie Universität Berlin, 9 2008.

Abstract: Sensor network hardware designs consist of a central micro-controller, to which sensors and communication peripherals are connected. Resource arbitration and concurrency man-agement must be implemented in software. Existing hardware arbitration mechanisms use explicit locking to protect against resource conflicts. Explicit locking may lead to deadlock, which must be avoided for long-term sensor network deploy-ments. We present a power-saving resource arbitration archi-tecture that is deadlock-free, portable, and resource-efficient. The architecture explicitly manages inter-device dependencies to know what devices to power down.

Keywords: hardware abstraction, resource arbitration, fault-tolerance, operating systems, wireless sensor networks


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