• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

ST Reliability and Connectivity of VANETs for Different Mobility Environments


Abstract

Vehicular ad-hoc network (VANET) is the name of technology, which uses ‘mobile internet' to facilitate communication between vehicles. The aim is to ensure road safety and achieve secure communication. Therefore, the reliability of this type of networks is a serious concern. The reliability of VANET is dependent upon proper communication between vehicles within a given amount of time. Therefore a new formula is introduced, the terms of the new formula correspond 1 by 1 to a class special ST route (SRORT). The new formula terms are much lesser than the Inclusion-Exclusion principle. An algorithm for the Source-to-Terminal reliability was presented, the algorithm produced Source-to-Terminal reliability or computed a Source-to-Terminal reliability expression by calculating a class of special networks of the given network. Since the architecture of this class of networks which need to be computed was comparatively trivial, the performance of the new algorithm was superior to the Inclusion-Exclusion principle. Also, we introduce a mobility metric called universal speed factor (USF) which is the extension of the existing speed factor, that suppose same speed of all vehicles at every time. The USF describes an exact relation between the relative speed of consecutive vehicles and the headway distance. The connectivity of vehicles in different mobile situations is analyzed using USF i.e., slow mobility connectivity, static connectivity, and high mobility connectivity. It is observed that p_c probability of connectivity is directly proportional to the mean speed µ_v till specified threshold µ_τ, and decreases after µ_τ. Finally, the congested network is connected strongly as compared to the sparse network as shown in the simulation results.


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Cite this article

[IEEE Style]
Hussain Saajid, WU DI, Sheeba Memon and Naadiya Khuda Bux, "ST Reliability and Connectivity of VANETs for Different Mobility Environments," KSII Transactions on Internet and Information Systems, vol. 13, no. 5, pp. 2338-2356, 2019. DOI: 10.3837/tiis.2019.05.006

[ACM Style]
Saajid, H., DI, W., Memon, S., and Bux, N. K. 2019. ST Reliability and Connectivity of VANETs for Different Mobility Environments. KSII Transactions on Internet and Information Systems, 13, 5, (2019), 2338-2356. DOI: 10.3837/tiis.2019.05.006