Graph theory is a promising approach in handling the problem of estimating connectivity probability vehicular ad hoc networks (VANETs). With communication network represented as graph, graph indicators become valid for analysis well. In this article, we discuss two different graph-based methods VANETs showing that they capture same behavior estimated using probabilistic models. The study is, th...

Vehicular Ad-hoc Network (VANET) represents a challenging class of mobile ad-hoc networks that enables vehicles to intelligently communicate with each other and with roadside infrastructure. VANET poses number of challenges in terms of Quality of Service (QoS) and its performance. Quality of Service depends on numerous parameters such as bandwidth, packet delivery ratio, data latency, delay var...

In this paper, we provide the first scalable privacy-preserving authentication protocol for VANETs without participation of the nearby RSU. Existing authentication methods for VANETs require the participation of the nearby RSUs. So, bottleneck problem can be occurred as increasing the number of vehicles. Also, the time delay to authenticate the nearby vehicle will increase. In order to minimize...

In recent years, Vehicular Ad-hoc Networks (VANETs) have become a popular research field. In addition, conditions happened surrounding our life often have the demand to be supported by other people, and these conditions often occur on the road. This study proposes an efficient crowdsourcing search scheme in VANETs to search objects and collect data. Our proposed mechanism is based on the virtua...

Vehicular ad hoc networks (VANETs) are vulnerable to many kinds of security attacks, so it is necessary design an authenticated key agreement (AKA) scheme for securing communication channels in VANETs. Existing AKA schemes VANETs have not provided efficient and secure method V2V V2I communications simultaneously while meeting the privacy requirements. Further, few updating mechanisms, which sec...

Data dissemination or diffusion service is the process of distributing a certain amount of information to the users such as vehicle drivers or mobile users especially in wireless networks. It also plays a significant role in numerous applications of Vehicular Ad hoc Networks (VANETs). Data Dissemination problem has been addressed by many researchers so far in many contexts. This paper presents ...

An inter vehicle communication (IVC) system can possibly expand the safety, proficiency and comfort of ordinary street go in VANETs. In this paper we proposed a productive Vehicle-to-Vehicle(V2V) correspondence protocol for avoid the crashes in VANETs. This convention decreases the quantity of street accidents by giving early notices messages and it additionally lessens the idleness in conveyin...

In recent years, Vehicular Ad Hoc Networks (VANETs) experience growing interest in both academia and industry. VANETs apply multiple channels, namely Control Channel (CCH) and Service Channels (SCHs), to provide road safety services and improve the comfort and efficiency of driving. Based on the time slotted p-persistent channel access mechanism, this paper proposes a multiple priority supporte...

Vehicular Ad-hoc Networks (VANETs) and the rapid development of communicationand computation technologies are one of the main next generation wireless networks which are envisaged to be an integration of homogeneous and heterogeneous wireless networks. Although VANETs are deployed in reality offering several services, a seamless handover mechanism with negligible handover delay is required to m...

Location based services (LBSs) are promising value-added services in vehicular ad hoc networks (VANETs), which can yield substantial economic profits. To extensively deploy LBSs in VANETs, it is essential to establish an efficient privacy-preserving key management scheme. In this paper, we point out a privacy weakness in a recent key management scheme based on group signatures for LBSs in VANET...