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This paper investigates the energy saving of base station (BS) deployed in a 1-D multi-hop vehicular network with sleep scheduling strategy. We consider cooperative BS scheduling strategy where BSs can switch between sleep and active modes to reduce the average energy consumption utilizing the information of vehicular speeds and locations. Assuming a Poisson distribution of vehicles, we derive an...
Vehicular communication technology leverages communication equipment and infrastructure to improve road safety and provide useful services for road user. In order to operate properly, many of these services need continuous data gathering to assess road situations accurately. In this paper, we analyse the impact of communication technology penetration rate and the proportion of application-equipped...
Intelligent Transport System (ITS) shall be able to incorporate transparently and seamlessly a large number of different and heterogeneous traffic system, while providing communication access to vehicles with various Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication for the development of a safety commuting service. Building a route forecasting system is a complex task, mainly...
Collision on road is a classic and important problem as it brings about great loss on humans' safety and the efficiency of the traffic system. Numerous algorithms have been proposed to address the issue, and most of the existing researches are focused on rear-end, overtaking and lane change scenarios. However, due to the massive computing process, limitation of prediction time and complex layouts...
We propose a multi-hop reliable broadcasting (M-HRB) scheme suitable for a wide range of vehicular ad-hoc network (VANET) applications in urban setting. Multi-hop reliability is performed using local state information. Basically, a street is divided into multiple cells to form grid-like zones. We apply a proactive local state processing scheme exploiting features of periodic beacons to estimate wireless...
Follow me cloud (FMC) is one of the solutions to the limitations of the service quality and type of functionality due to the inherent constraints of mobility management. In this paper, we address the tradeoff between the overhead and Quality of Experience (QoE) by proposing a mobility-based services migration prediction (MSMP). The aim of MSMP is to plan, for a given service, the sequence of data...
Nowadays, wireless communication technologies have high influence on our daily lives. The vehicular ad hoc networks (VANETs) is now evolving quickly and attract attention from road operators, car manufacturers and governments. We unveil a fine traffic flow optimization method with VANETs. On the macroscopic level, our model identifies road segment profiles. On the microscopic level, vehicles send...
The last decade has witnessed a booming era of wireless vehicular networks, supporting diverse road traffic services and applications. Information dissemination/sharing among vehicles is the fundamental goal of vehicular networks. Although diverse information dissemination/sharing mechanisms have been proposed in the existing literature, the physical layer outage performance of information sharing...
This paper considers the network connectivity problem in a highway scenario and builds an analytical model to analyze the steady-state connectivity probability of vehicle nodes on a unidirectional highway segment with one entrance/exit. In the analytical model, the entrance/exit is uniformly distributed on the road segment and divides the road segment into two segments. On each segment, the vehicle...
Beam alignment is a source of overhead in mobile millimeter wave communication systems due to the need for frequent repointing. Beam switching architectures can reduce the amount of repointing required by leveraging position prediction. This paper presents an optimization of beam design in terms of rate. We consider a non-congested two-lane highway scenario where road side units are installed on lighting...
With the explosive growth of Internet of Vehicles (IoV), it is undoubted that vehicular demands for real-time Internet access would get a surge in the near future. Therefore, it is foreseeable that the cars within the IoV will generate enormous data. On the one hand, the huge volume of data mean we could get much information (e.g., vehicle's condition and real-time traffic distribution) through the...
Our contribution in this paper is to propose a new solution called EQ-AODV (Energy and QoS supported AODV) for better performance in WMSNs (Wireless Multimedia Sensor Networks). EQ-AODV aims to improve AODV protocol and make it effective for multimedia data in WMSNs. This improvement is based on the adaptation of the routing process of AODV according to two parameters. The first one is the energy...
The development and evaluation of Vehicle-to-X (V2X) applications using mobile cellular networks by means of field tests is time consuming and expensive. Simulations can speed up the development and largely reduce evaluation costs. However, due to the complex nature of the network involved, it is quite difficult to be certain that the results obtained using simulation will actually match the observable...
Aggressive driving is the main cause of traffic accidents all over the world. Aggressive steering is the second leading cause of traffic accidents, just behind speeding. To detect aggressive steering and encourage drivers to cultivate better driving behaviors, automatic recognition of different vehicle steering modes is required so a decision can be taken on whether the behavior is aggressive or not...
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