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Establishing and maintaining interoperability among heterogeneous systems is a major challenge and expense for large business and military projects. Data interoperability and service-oriented architecture (SOA) approaches, while essential, do not provide a complete solution. We describe a complementary approach that uses Web Ontology Language (OWL) and Semantic Web Rule Language (SWRL) to capture...
We present the cognitive radio (policy) language (CoRaL), a new language for expressing policies that govern the behavior of cognitive radios that opportunistically share spectrum. A Policy Reasoner validates radio transmissions to ensure that they are compliant with the spectrum policies. The Policy Reasoner also discovers spectrum sharing opportunities by deriving what requirements must be fulfilled...
We argue for a policy-based approach to increase spectrum availability. To this extend, we briefly summarize a new language for expressing policies that allow opportunistic spectrum access. A Policy Reasoner that reasons about these policies can be used with cognitive radios to guarantee policy- specified behaviors while allowing spectrum sharing. We present our policy reasoner design and we evaluated...
We present a new language for expressing policies that allow opportunistic spectrum access while not causing interference. CoRaL has expressive constructs for numerical constraints, supports efficient reasoning, and will be verifiable. The language is extensible so that unanticipated policy types can be encoded. We also describe a policy reasoner that reasons about CoRaL policies, and show how this...
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