Ad Hoc Networks Aodv And Olsr Routing Protocol

Wireless Mobile Ad hoc Network (MANET) is the aggregation of hardware and software that include wireless transmitter-receivers and computers, which is based on the wireless packets network. Because MANET is mainly used for emergency and military wireless communication, the aims of the MANET routing protocol are rapid, exact, effectual and expandable.Based on Ad hoc environment, AODV routing protocol is chosen from source-initiated-on-demand-routing protocols as the network layer protocol. A new idea about local repair is used to improve the AODV and formed the Improved AODV algorithm. Otherwise, a new approach is proposed for flooding limit. The approach is implemented by using cross-layer design, which limits the flooding procedure of RREQ packets in AODV routing protocol.Olsr routing protocol is chosen from table-driven protocols as the network layer protocol in a hierachical network built on OPNET system. Designing,programming,debuging of the OLSR protocol simulating module and its cooperating with IPv6 module have been done.A simulating platform of MANET is built on OPNET simulator. And the simulations done on this platform have proved the validity of Improved AODV local repair algorithm and the Improved AODV flooding algorithm, and the well performance of OLSR simulating module on the hierachical network.