Enhancement in AOMDV Routing Protocol to Overcome Congestion Problem in MANET

Mobile Ad hoc Networks (MANETs) face significant challenges due to the absence of centralized management, particularly in handling congestion issues. In this context, nodes experiencing congestion often advertise themselves as the fastest route to the desired destination node, resulting in multiple packet losses and compromising the integrity, reliability, and availability of the network. To address these concerns, researchers have proposed various approaches to enhance the Ad-hoc On-demand Multipath Distance Vector (AOMDV) routing protocol. This paper investigates the integration of congestion management protocols into MANETs to enhance the performance of AOMDV. We introduce an enhanced version called Congestion Overcome AOMDV (COAOMDV), which incorporates congestion management protocols. A comparative analysis is conducted between COAOMDV and traditional AOMDV procedures, with a focus on mitigating the consequences of congested nodes and improving the overall performance of MANETs. To tackle congestion-related challenges, the proposed technique utilizes higher sequence numbers to identify crowded nodes. The evaluation of these protocols is carried out using NS2.35, considering varying simulation durations and node sizes. Key performance metrics such as throughput, packet delivery ratio, packet loss, and average end-to-end latency are measured and compared between the protocols. The findings of this research demonstrate the effectiveness of the proposed COAOMDV technique in managing congestion problems in MANETs. The results indicate significant improvements in the performance of the AOMDV protocol when congestion management protocols are integrated. By addressing the challenges associated with congested nodes, this research contributes to enhancing the integrity and reliability of MANETs.