Research Of The Routing Protocols And The Performance Of The Ad Hoc Network

With the development of network coverage area and application environment, the original regular network cannot meet the real time need of dynamic network. A new communication mode is required for real time exchange and communication, namely, mobile adaptive hoc ( ad hoc ). As the random movements of the nodes in mobile adaptive network cause the topological structure of the network to change at any time, instant, reasonable routes are needed as essential support for real time communication.This paper describes the organization of ad hoc's structure first, focuses on the study of route technology which is the key technology in ad hoc especially: DSDV, which based on route table ,used sequence number , can avoid the appearance of router circle ; ZRP , which can control the router spending ,cut the delay and improve the efficiency , while setting the best radius ; DSR, based on source route, uses cache of route with little spending in network, and old route exists ; AODV , as the synthesis of DSR and DSDV, supports the function of group broadcast and QoS, uses IP address, depends on the network link and doesn't support signal orientation channel; TORA, which uses directed acyclic graph and link reversal , adaptive to the extremely active mobile network. In the end , the paper provides the simulate results of protocols mentioned above and makes a particular numerical value analysis.