Geographic addressing Geocast

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a geographic destination address expressed in 3 ways: point, circle (with center point , radius), , polygon (a list of points, e.g., p(1), p(2), …, p(n–1), p(n), p(1)). geographic router (geo router) calculates service area (geographic area serves) union of geographic areas covered networks attached it. service area approximated single closed polygon. geo routers exchange service area polygons build routing tables. routers organized in hierarchy.







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