The success of the large scale deployment of sensor actuator devices lies in their plug&play capabilities: they should be automatically discovered and ready to be used when they join to an environment. Self-description and discovery gain therefore a particular importance. Nevertheless, there is currently no largely adopted energy efficient device description and discovery standard. Existing protocols use proprietary device description models and discovery mechanisms that are incompatible

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... the two. This paper presents LRD2 (Low Resource Device Description), a generic description model capable of describing different kinds of device information. LRD2 implements a compression algorithm to reduce the size of description documents, thus saving energy by reducing the number of messages sent in the network. Experimental results about the performance of LRD2 are also presented.