Paper Title:A Survey of Several Routing Protocols for MANETs


Mobile Ad hoc networks (MANET) are autonomously self organized networks without infrastructure support. Nodes in MANET normally have limited transmission ranges, Some nodes cannot communicate directly with each other. Hence, routing paths in mobile ad hoc networks potentially contain multiple hops, and every node in mobile ad hoc networks has the responsibility to act as a router. In proactive routing protocols, each node maintains routing information to every node in the network. But it is high in overhead and information is flooded in whole network. In reactive protocols reduce the overheads by maintaining information for active routes only. Hybrid protocol new generation of protocol was designed to increase the scalability and to reduce the route discovery overheads. Even though hybrid protocol suits for large networks, it complexity is increases i.e. High traffic and significant reduction in throughput when it expands in scale. In order to increase the scalability the route discovery and route maintenance must be controlled. Depends upon the network traffic and number of flows the routing protocol should be chosen. Hybrid protocol is association of the advantage of the both proactive and reactive routing protocol. To implement thi s, use sequence numbering in destination routing protocol to avoid the complexity in larger networks

Keywords:Ad Hoc; MANET; Node; Scalability; Proactive; Reactive; Hybrid Protocol