10. The method of claim 9 , wherein the step of building the range query index further comprises steps of: dividing a monitoring region associated with the at least one range query into one or more initial-level virtual squares; defining one or more levels of virtual squares for each of the initial-level virtual squares; decomposing the at least one range query into one or more of the virtual squares; and associating an identifier of the at least one range query with the one or more decomposed virtual squares.
12. The method of claim 10 , wherein the step of defining one or more levels of virtual squares for each of the initial-level virtual squares further comprises each virtual square having a local identifier and a partition identifier.