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Aiming at how to reduce energy consumption and improve the node survival cycle in mobile P2P network, SRDBSM was proposed. It uses the transmission characteristics of spatial node to search the optimal node which is considered as next-hop node within the maximum effective transmission range. It's not only reduces next-hop number and communion time, but also improves the efficiency of resource discovery...
Given two sets DA and DB of multidimensional objects, a spatial region R, and a critical distance dc, an optimal-nearest- neighbor (ONN) query retrieves outside R, the object in DB with maximum optimality. Let CAR (Sp,p) be the cardinality of the subset Sp of objects in DA which locate within R and are enclosed by the vicinity circle centered at p with radius dc. Then, an object o is said to be better...
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