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The authors consider the problem of multi-hop content distribution over a wireless ad-hoc network. Such mechanisms are relevant to a broad spectrum of applications, but are particularly important to data broadcast in wireless distributed computing where speedy I/O is critical to overall performance. In this paper, they present Rainbow, a content distribution protocol for multi-hop wireless ad-hoc networks. The protocol uses a content-directed Medium Access Control (MAC), through which transmission priority is given to those nodes most capable of delivering useful content to their neighbors. They describe an efficient implementation of Rainbow based on network coding.
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