earticle

영어

A MANET is an autonomous collection of mobile nodes that communicate all the other nodes within their radio ranges. Where the nodes that are not in the direct communication range use intermediate node to communicate with each other. In MANET each mobile node has mobility and move according to the specified locations in the network. Therefore the verification of node locations is an important issue in mobile adhoc networks, and it becomes particularly challenging in the presence of adversaries aiming at harming the system. In this research work proposed a protocol called Neighbor position verification (NPV), in order to verify the position of its communication neighbors and detect the adversaries in the mobile adhoc network, This protocol is used to exchanges the messages and verifies the position of communicating nodes in the network. The first scheme is deals with the identification of nodes with which a communication link can be established or that are within a given distance. This distance calculation is based on message exchange between the verifier and its communicated neighbors. After the distances are calculated verifier verifies the position of communicating nodes in networks by following three tests that to be done, they are: 1) Direct symmetry test 2) Cross symmetry test 3) The Multilateration Test. This protocol is implemented over the MANET network and simulated using Network Simulator (NS2). This research work carry out QOS based forwarding node selection scheme to reduce the delay and achieve the high throughput. Performance of the proposed system evaluated based on the parameters such as delay and throughput.