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Nowadays, Vehicular Ad hoc NETworks (VANETs) attract more and more attentions both from academia and industry. Although it has achieved much success in the research field, large-scale deployments of VANETs are still lacking. One barrier facing us is that both governments and companies are doubtful about the performance of VANETs in large-scale deployment in real world. The connectivity of VANETs is...
The vehicular ad hoc network (VANET) has attracted a lot of interest recently. However, traditional VANET is just an instantiation of MANET in which nodes are treated equally for data delivery. We first analyze the unique features of urban VANET that vehicles have different types, and move as clusters due to the influence of traffic lights. Then a two tier architecture called Mobile Infrastructure...
The vehicular ad hoc network (VANET) is an emerging new technology. Developing multi-hop routing protocols for urban VANETs is a challenging task due to many factors such as frequent network disconnections. Many VANET routing protocols use a carry-and-forward mechanism to deal with the challenge. However, this mechanism introduces a large packet delay, which might be unacceptable for some applications...
Geographical source routing is a promising routing technique for VANETs, due to its adaptability for network dynamics and ability to handle topology holes. In traditional geographical source routing algorithms a best-known neighbor, typically the neighbor closest to the next junction in a greedy fashion, is designated as the next hop. This approach may cause two drawbacks: (1) the designated neighbor...
Simulation is an important approach to evaluate protocols. Realistic simulations lead to accurate evaluations. However, most of evaluations in VANET recently were still using MAN.ET mobility models or MANET models with a map bounder. Existing VANET mobility models, which treat all nodes identical, cannot reach most researchers' demand. In this paper, we develop a role based mobility model for VANET...
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