Design and Evaluation of an Efficient Congestion Adaptive Routing Protocol in MANET

Routing protocols for mobile ad hoc networks (MANETs) have been explored extensively in last few years. Routing may let a congestion happen which is detected by congestion control, but dealing with congestion in reactive manner results in longer delay, and unnecessary packet loss and requires significant overhead if a new route is needed. Adaptation to the congestion helps to increase both the effectiveness and efficiency of routing. These problems are solved by the congestion-aware routing protocols in certain degree. These protocols which are adaptive to congestion status of mobile ad-hoc network can greatly improve the network performance.This project work gives a proposal for a new algorithm, Efficient Congestion Adaptive Routing Protocol (ECARP) using cross layer design, which out-performs even during constrained situation. The project is simulated using the popular network simulator NS2 and the results are compared with the Ad hoc On-demand Distance Vector (AODV) routing protocol which is one of the dominate protocol design for MANET. Through simulation in NS- 2 that ECARP out-performs over AODV routing protocol in normal situation.