Author(s): Dr. V.Ramesh

Geographic routing is a routing principle that relies on geographic position information. Geographic routing protocol employs Boundary State Routing (BSR) with two components namely GreedyBoundedCompass forwarding and Boundary Mapping Protocol. The main idea behind this routing protocol is that the source sends a message to the geographic location of the destination instead of using the network address. The Greedy-BoundedCompass Forwarding strategy can forward packets around concave boundaries without looping. Boundary Mapping Protocol is used to maintain link state information for boundaries containing concave vertices to route packets around local minima.