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This paper proposes Cooperative Opportunistic Routing (COR), a throughput improvement scheme for the cooperative opportunistic routing in multi-hop Wireless Mesh Networks (WMNs). The authors investigate the two major issues in opportunistic routing, the selection and the prioritization metric for the candidate set. The COR is presented to select and prioritize the candidate node with minimum expected cost. This candidate selection with low expected cost on each transmission constructs a throughput efficient routing path. The COR's robust packet handling strategy is also proposed to avoid duplicated transmission without forwarding list.
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