“…In WiMAX networks (Bayan & Wan, 2011;Sangeetha, Nagaraj, Murthy, & Rustagi, 2016;Sangeetha, Nagaraj, Murthy, & Rustagi, 2017;Sangeetha et al, 2015), there are two types of transmissions,namely,uplinkanddownlinktransmissions.TheuplinktransmissionisfromtheMSs totheBSsorRSs.ThedownlinktransmissionisfromtheBSsorRSstotheMSs.Also,therearetwo typesoflinks,namely,relayandaccesslink,whichisshowninFigure2.Therelaylinkistheedge connectivitybetweentwoRSsorbetweentheBSandRSandtheaccesslinkistheedgeconnectivity betweentheRSandMSorbetweentheBSandMS.TheRSsandMSsareundertheguidanceof itsservingBS.TheRSs (Sydir&Taori,2009)operateusingstore-and-forwardtechniques.TheBS sendsthesignalsinanallocatedfrequencyandspecifictimetotheRSsassociatedwithit.TheRSs receivesthesignals,decodes,andprocessesthesignalandthenindifferentfrequencyallocations andtime,ittransmitsthisreceivedsignaltotheMSsorBS.TheBSsandRSscoverageareascan overlap.TherecanbeoneormoreRSsbetweentheBSandMS.However,theRS (Abichar,Kamal, &Chang,2010)needstobeoptimallyplacedbetweentheBSandtheMSssoastoreducethecost.…”