Z number improved reference ideal method-based decisionmaking process for enforcing cooperation during data dissemination in mobile ad hoc networks

摘要

In mobile ad hoc networks (MANETs), cooperative communication andresource constraint are the two important core characteristics essential to guaranteetrusted data dissemination. The cooperative communication betweenmobile nodes depends on the trust rendered by them towards the process ofreliable data routing. However, stringent resource constraints of mobile nodessuch as energy, memory, communications, and computations result in theintroduction of selfish and malicious node that completely degrades the networkperformance in different dimensions. In this paper, Z number improvedreference ideal method (RIM)-based decision-making process (NIRIMDMP) isproposed with the merits of maximizing deviation method (MDM) and best–worst method (BWM) to ensure reliable data routing by modeling the cooperationdegree in terms of Z number. This NIRIMDMP adopted Z number to representthe information reliability and handle the problem of inherentuncertainty during the process of evaluating each mobile node in the routingprocess. In specific, MDM and BWM are included into the proposedNIRIMDMP to determine comprehensive attribute weights based on the calculatedobjective and subjective weights that could be possible derived in routing.It extended the merits of classical RIM using Z numbers to confirm reliableranking of mobile nodes, even when the optimal solution exists amid extremevalues taken into consideration for assessing the mobile nodes during decisionmaking. Simulation investigations of the proposed NIRIMDMP confirmedimproved throughput and network lifetime with reduced control overhead,energy consumptions, and delay independent of the amount of malicious andnon-cooperative nodes.