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The focus of this brief is to identify what unifies and what distinguishes the routing functions in four wireless multi-hop network paradigms. The brief introduces a generic routing model that can be used as a foundation of wireless multi-hop routing protocol analysis and design. It demonstrates that such model can be adopted by any wireless multi-hop routing protocol. Also presented is a glimpse of the ideal wireless multi-hop routing protocol along with several open issues.

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Introduction to Wireless Multi-Hop Networks.- Routing for Wireless Multi-Hop Neworks: Unifying Features.- Routing for Wireless Multi-Hop Networks: Distinguishing Features.- Conclusions and Open Issues.

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