Location-aided secure routing scheme in mobile ad hoc networks

This paper proposes a new routing scheme that uses geographical position information to minimize the number of intermediate nodes that make a routing path, and to guarantee reliability and security in route establishment process. To achieve this purpose, we first describes the projection-line, the shadow-line, and three types of route request (RREQ) packet to select the closest node to the destination. The safety table is then newly defined by adding a specific subfield to a routing cache to identify the misbehaving nodes. The suggested scheme decreases the number of hops to make up routing path in comparison with the existing one, and exclude malicious nodes from route establishment process.