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This paper deals with the problem of reliable and fast broadcast of mission-critical data with rich content over ad hoc networks. Existing approaches to dissemination reliability often assume network size knowledge, or that receivers know about the dissemination in advance. Without making similar assumptions, the authors propose a distinct approach which accommodates the varying reliability needs of applications. They develop the RADcast (Reliable Application Data broadcast) protocol as an integration of two components: (a) Peddler, which ensures that receivers obtain the dissemination metadata, and (b) Pryer, which delivers the actual data to dissemination-aware receivers.
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