Congestion-Aware Fibonacci Sequence Based Multipath Load Balancing Routing Protocol for MANETs

摘要

Congestion is the primary reason for packet drop and delay in the mobile ad hoc networks. In this paper, a new routing protocol called Congestion-aware Fibonacci Multipath Load Balancing (Congestion-aware FMLB) routing protocol has been proposed that finds multiple node-disjoint paths between source and destination nodes, sorts them in increasing order of round-trip time of route request and route reply packets and distributes the data packets over these paths using the Fibonacci sequence numbers. The route that requires a little round-trip time, is used more frequently than the other paths. The performance comparison is performed for the proposed routing protocol with respect to Ad Hoc On-demand Distance Vector (AODV), Linear Multiple-path routing protocol (Linear) and FMLB routing protocols using GloMoSim Simulator 2.03. The results show that the Congestion-aware FMLB routing protocol has achieved a better packet delivery ratio, up to 141 % as compared to AODV, 109 % as compared to Linear and up to 65 % over the FMLB routing protocols. The results also show the improvement of end-end delay and normalized MAC overhead of the proposed routing protocols with respect to existing routing protocols.