MANET protocols: Extended ECDSR protocol for solving stale route problem and overhearing

MANET is collection of wireless nodes which are connected to each other, but all nodes are independent. They can communicate each other via intermediate nodes or directly. In order to increase the lifetime of the network, routing must be energy efficient. Routing protocols like DSR, ECDSR, AODV, TORA, DSDV, EEAODR, and EPAR are proposed for MANET. Design of energy efficient routing protocol is the key issue for mobile ad hoc networks. One difficulty with routing protocols in MANET is to know which protocol performs best in which situation. Since protocols exhibit advantages and disadvantages based on certain context, it is quite difficult to determine. This paper provides an insight into the facts of proactive, reactive and hybrid routing protocols that are used in MANET. ECDSR protocol selects nodes on the basis of minimum threshold energy. As ECDSR protocol has overhearing and stale route problem, which leads to packet loss and over energy consumption. In our paper we reviewed the solution to address overhearing and stale route problem by suggesting modification in ECDSR protocol.