Research Article
Efficient Processing of Moving k-Range Nearest Neighbor Queries in Directed and Dynamic Spatial Networks
Figure 4
Three scenarios for processing MkRNN queries.
(a) submits a RNN query for a query region to the server at time , where |
(b) submits a RNN query for an updated query region to the server when leaves at |
(c) Server requests that updates the query region when a set of candidate objects is invalidated at |