
Lietuviška santrauka. Avarijos ir spūstys yra pagrindinės kelių eismo problemos. Siekiant sumažinti šių problemų sukeltas pasekmes gali būti panaudotas ryšys tarp automobilių – WAVE. Greta esantys automobiliai vieni kitiems siunčia pavojaus pranešimus apie savo veiksmus. Šiame straipsnyje, naudojant NCTUns 5.0 modeliavimo aplinką, yra išanalizuoti pavojaus pranešimų perdavimai daugelio šuolių grandine (angl. multi-hop), remiantis įprastiniu IEEE 802.11 ir naujai kuriamu IEEE 802.11p standartais. Modeliavimo rezultatai patvirtina hipotezę, kad automobilių susidūrimų galima išvengti perduodant pavojaus pranešimus iki 100 stočių grandine. Jei kuriuo nors stočių tinklu perduodami ir kiti pranešimai, vėlinimas grandinėje eksponentiškai padidėja didėjant stočių skaičiui.
Road accidents and traffic jams are most important problems on the roads. To decrease the mentioned problems wireless inter-vehicle communication - WAVE can be used. The nearby cars send the emergency warning messages about their actions. In this paper, using NCTUns 5.0 environment, are analyzed the delay values of emergency message transmission in multi-hop link, based on legacy IEEE 802.11 and emerging IEEE 802.11p standard. Simulations show, that single message propagation is in permissible range even for 100 nodes. For controlled flood scenario node number increases delay exponentially.
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