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We introduce an analytical framework for quantitative safety level evaluation of periodic-based safety applications in vehicular ad hoc networks (VANETs). The framework is based on Markov chain modeling and associates the probability of successful reception of safety messages by the safety application with the safety level which is eventually offered to the passengers. The relationship between distance...
In some safety applications of VANETs, vehicles must get the message immediately after they enter a hazardous section in the highway. In this paper the multi-hop message dissemination in sparse linear VANETs in different traffic states i.e. stationary and non-stationary traffic for the message to reach the newly entered vehicles is investigated. We release the condition of having a pre-determined...
Connectivity in vehicular ad hoc networks may degrade dramatically in sparse traffic and also high speed highways. In this paper we study a way to improve the connectivity by adding some extra nodes with higher transmission range which we call mobile base-stations. These nodes can also offer commercial services (e.g. advertisement, video, audio, etc.) to the vehicles on roads. Besides, the financial...
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