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Fig. 4

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Scheme of the packet propagation through the grid. The bottom scheme shows a propagation grid. The upper scheme shows the same grid, but expressed in a tree structure. The green line is an example of packet’s path. It is simple to show this path on the lower graph. The upper graph explicitly shows the adaptive propagation grid level structure including the illustration of cell indexing. The numbers in the figure describe the logic of cell indexing in the code.

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