Design of a new CPEDSR Protocol for Optimizing the Communication in Mobile Network

The congestion problem can occur in a cooperative network because of the non-responsiveness of intermediate nodes or heavy traffic. Existing DSR cannot optimize the communication route in a such high congestion situation. In this paper, a new CPEDSR protocol is presented for handling energy and congestion-critical situations in the mobile network. The main objective of the proposed protocol is to identify the suspected attacked and congested nodes and perform communication over safe and reliable nodes.In this improved protocol, a congestion ratio-based probabilistic measure is employed for computing the congestion-resistance (CR) for each node. The weight is evaluated based on connectivity count (CC), residual energy (RE), average participation (AP), and average failure (AF) ratios. After computing the individual parameter, the overall CR is estimated to label the congestion-safe nodes. The weight rules are implied on CR for deciding the participation eligibility of the node. With each communication session, a more effective and accurate decision for node participation is taken. It is an experience adaptive protocol that acquires some weightage of the previous status for making decisions about the current node. This participation degree of neighbor nodes is processed by the DSR protocol to identify the next effective hop. The simulation is performed in congested and DDOS-infected networks. The comparative analysis is done against the existing and improved reactive protocols. The proposed protocol is validated on four network scenarios with a varied number of nodes and in attacked, non-attacked, and heavy traffic situations. The proposed CPEDSR protocol is validated against DSR, AODV, SAODV, PSAODV, PDS-AODV, and RSKNSN protocols. The average loss rate of AODV, DSR, SAODV, PSAODV, PDS-AODV, RSKNSN, and the proposed CPEDSR protocols for all scenarios is 15.07, 18.99, 10.62, 7.09, 8.30, 9.27, and 6.08%. The average number of dead nodes for all scenarios is 20.75 for AODV, 22.75 for DSR, 19.75 for SAODV, 18.5 for PSAODV, 18.25 for PDS-AODV, 16.75 for RSKNSN, and 14 for CPEDSR. It shows that the proposed protocol improved the network life and reduced communication loss during transmission.