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4.1.1.4 MO hinh trong OMNeT++
MOt mO !firth trong OMNeT++ bao gam cac module 'Ong nhau cO au trim Oki cap. DO sau ciut cac module 16ng nhau li khong gieri han, dieu nay cho phip ngutri sir dung cO the bieu dien cac au trim logic dm cac he thong trong thuc to bang cac cau true m0 hinh. Cac module trao &Si thong tin veri nhau thong qua viec giri cac message. Ck message nay cO the cO eau trite phirc tap tiny y. Cac module c6 the giri cac message nay theo hai each, mOt lit giri true tiep toi dia chi nhan, hai la giri di theo mOt dutmg dan duce dinh sin, thong qua cac ding va cac ket nti.
Cac module co the co cac tham 56 dui rieng nit. Cac tham s6 nay e6 the duqc sir dung a chinh sirs de thutic tinh dm module vi de bieu dien cho topology cim mo hinh.
Cac module a mirc thap nit& trong eau trim phan cap deng gel cac thuk tinh. Cac module nay duqc coi la cac module dun gian, vfl chimg duqc lap trinh trong non ngft C++ bang each sir dung cite thu vien me ph6ng.
MOt mo hinh trong OMNeT++ chin cac module !Ong nhau cO eau tit phan cap, trao dal thong tin vat nhau bang each giri cac message. Mai mo hinh nay thuemg bieu
module he thong module dun grin
MO PHONG VA DANH GIA THONG LONG CUA AODV, OLSR, DSR VA DYMO BANG OMNET++ dien cho met he th8ng mang. Module mire cao nhat trong cau trim phan cap dirge En la module he th6ng. Module nay c6 the chira cac module con, cac module con ding ce the chira cac module con cim ri'eng no. De thu phan cap d6i v6i cac module la Ichong gi6i han, dieu nay cho phep ngutri sir dung c6 the de ding bleu dien met au trim logic dm met he thong trong thue to bing cAu true phan cap cim OMNeT++.
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Hinh 4.1 Ccic module don gicin va kit hop
Cac module ce the chfra nhieu module con va dtrqc goi la module ket hqp. Cac module don gian la the module c6 cap thip nhAt trong cAu trim phan cap. Cac module don gian china tic thu$t town ciut m8 hinh. Ngubi sir dung then khai cac module don gian bang nem ngft C++, sir dung et thu vien m8 phong cim OMNeT++.
Cac module trao doi thong tin bang vies girl cac message. Trong time re, message c6 dung khung (frame) hok lit cac goi tin (packet) dirge truyen di trong mang. Cac message c6 the c6 cAu trite phirc tap thy Sr. Cac module don gian co the girl cite message di met each true tier) den vi tri nhon hooc girl di theo met duOng din djnh sin thong qua cac ctng (gates) va cac lien ket (links).
Cac ding (gates) la cac citing vio, ra cfm cac module. Message duce girl di qua cac c6ng ra va duqc nhan vito thong qua cac ming vac).
Moi ket not (connection) hay con goi lit lien ket (link) duce to ben trong met mire don trong cAu true phan cap cim cac module: ben trong met module ket hqp, met ket n6i co the doge tiro ra giDa cac ding tuong img cim hai module con, hoc gifts citing cim module con v6i cOng dm module ket hqp.