A High-Speed Retransmission Method with OCEUAEROR Protocol for Congestion Control in MANET

Abstract

In Mobile Adhoc Networks (MANETs), one of the most challenging processes is to reduce the energy consumption and enhance the network performance. To solve this problem, Optimized Cache space enhanced Economic Utility-Aware Enhanced Reliable Opportunistic Routing (OCEUAEROR) has been designed which enhances the MANET’s caching ability and minimizes the network traffic. But, network throughput and fairness were not effective due to the congestion or collisions occurred by the hidden nodes in the network. Therefore in this article, an OCEUAEROR-Congestion Handling protocol (OCEUAEROR-CH) is proposed to handle the congestion through the network and improve the throughput performance in MANETs. In this protocol, the Retransmission Dual Active Schedule Multiple Access (RDASMA) scheme is proposed to improve the Quality-of-Service (QoS) performance. This scheme has two factors such as active schedules and RTS/CTS dialogues. Also, retransmission strategy is adopted by using the Negative ACK (NACK) after the collision occurred by the hidden nodes. A hidden node where the collision occurs at access point listens to the NACK signal and utilizes the signal for determining the requirement of quick retransmission. Finally, the simulation results reveal that the effectiveness of the OCEUAEROR-CH protocol compared to the other protocols in terms of different network metrics.