Improved ant colony-based multi-constrained QoS energy-saving routing and throughput optimization in wireless Ad-hoc networks

Inordertoestablisharoutesupportingmulti-constrainedqualityofservice(QoS),increasenetworkthroughputandreducenetworkenergyconsumption,animprovedantcolony-basedmulti-constrainedQoSenergy-savingroutingalgorithm(IAMQER)isproposed.Theantcolonyalgorithm,asoneoftheavailableheuristicalgorithms,isusedtofindtheoptimalroutefromsourcenodetodestinationnode.TheproposedIAMQERalgorithm,whichisbasedontheanalysisoflocalnodeinformationsuchasnodequeuelength,nodeforwardingnumberofdatapacketsandnoderesidualenergy,balancestherelationshipbetweenthenetworkthroughputandtheenergyconsumption,thusimprovingtheperformanceofnetworkinmulti-constrainedQoSrouting.SimulationresultsshowthatthisIAMQERalgorithmcanfindtheQoSroutethatreduceaverageenergyconsumptionandimprovesnetworkpacketdeliveryratioundertheend-to-enddelayandpacketlossratioconstraints.