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Mobile gateways are deployed to improve Internet services in Vehicular Ad-hoc Network (V aNet). In this vein, this paper argues the need for selecting an appropriate gateway for vehicles without access to the Internet according to certain criteria and based on a gateway discovery system. The proposed solution introduces a method of multiple-criteria decision analysis helping to find suitable gateways...
With exponential growth of the Internet users in past few years, there is a need of context-aware information sharing among different inter-connected entities over the Internet. The prime objective of the inter-connected objects is that within a minimum use of available resources, maximum output with respect to parameters such as throughput and delay can be achieved. But, due to high velocity and...
Vehicular Ad Hoc Network (VANET) is considered as a special application of Mobile Ad Hoc Networks (MANETs) in road traffic, which can autonomously organize networks without infrastructure. VANETs enable vehicles on the road to communicate with each other and with road infrastructure using wireless capabilities. In the last few years, extensive research has been performed to extend Internet connectivity...
Offloading a part of cellular traffic through other kinds of networks, such as Wi-Fi hotspots and femtoCells represents an interesting solution for operators to cope with the high user traffic demand increase. In this paper, we propose to use the Vehicular ad hoc Networks (VANETs) for the same purpose. We present an analytical study based on an optimization problem formulation to evaluate the potential...
In this work, we investigate upon the potential of considering the Intelligent Transportation Systems (ITS) for cellular traffic offloading as an alternative to Wi-Fi and femtoCells approaches. We propose an analytical study based on an optimization problem formulation called VOPP where the objective is to elect the maximum number of data flows that could be routed to the downloaders through the Vehicular...
Vehicular ad hoc network (VANET) is a type of promising application deployed along a road for communication, safety and emergency information delivery, data collection, and entertainment. The network efficiency and stability are of great concern. We devote to achieve the communication quality by appropriate gateways. The channel randomness is taken into account in the wireless network, because it...
Vehicular ad hoc network (VANET) is needful and promising to connect the 3G network. If all vehicles communicate with the 3G network directly, it will be overwhelmed. We devote to solve the problem by mobile gateways in this paper. The channel randomness can affect the stability of the communication link, which ensures reliable dissemination of information in wireless network. We analyze the communication...
Integration of Vehicular Ad-hoc Network (VANET) and Universal Mobile Telecommunication System (UMTS) is a promising architecture for future machine-to-machine applications. This integration helps the vehicles have steady Internet connection through UMTS network and at the same time can communicate with other vehicles. However, the dead spot areas and unsuccessfully handoff processes due to the high...
In this paper, we propose a cooperative traffic transmission algorithm in a joint cellular and mobile ad hoc hybrid network architecture. The mobile ad hoc network is based on IEEE 802.11p standard. The focus of this paper is on defining an algorithm aiming to select the appropriate gateway for a given source vehicle under the scope of V2I communications. In this work, we consider the LTE Advanced...
Dead spot and out of coverage problem are serious problems especially in the rural and suburban areas where the network infrastructure is not deployed. In this paper, a new end to end multi hop relay scheme for vehicular communication is proposed to extend the coverage or/and relaxing frequent handoff process. The scheme allows vehicles to continue connected to infrastructure network i.e. UMTS. Relay...
Roadside units (RSUs) are a critical component of Vehicular ad hoc network (VANET). Ideally, RSUs should be deployed pervasively to provide continuous coverage or connectivity. However, during the initial stages of VANET, it will not be possible to ensure such a pervasive RSU deployment due to the huge cost and/or the lack of market penetration of VANET enabled vehicles. Given a limited number of...
Cloud services are charming for vehicular ad hoc network (VANET) users. Advances of wireless networks make access to the Internet from VANETs possible. However, the features of VANETs hinder the delivery of cloud services to VANETs. It is important to find proper Internet gateways to connect the VANET users to the cloud. A cloud-assisted gateway discovery scheme is proposed in this paper. The simulation...
Vehicle Ad Hoc Networks (VANETs), based on IEEE 802.11p, and 3G & beyond networks are characterized by their high date transmission rates and wide range communication, respectively. This paper presents an architecture that integrates between the two, making advantage of the features of each. Design guidelines pertaining to vehicle clustering and gateway management are defined. The former aims...
In this paper, we propose a new intersection-based geographical routing protocol, called delay tolerant routing protocol (DTRP) that adapts to the changes in the local topology within city environments. DTRP is based on an effective selection of road intersections through which a packet must pass to reach the gateway to the Internet. The selection, in such delay tolerant VANETs, is made in a way that...
Traffic safety applications using VANET can significantly improve road safety if safety packets can be delivered on time. Therefore, a MAC layer protocol for VANET that can guarantee timely delivery of data is critical. Currently, the MAC layer standard that is supporting inter-vehicular communication is IEEE 802.11 which is a contention based protocol where all the vehicles contend for one common...
We focus on the problem of efficient dissemination of available gateways information throughout a Vehicular Ad-hoc Network (VANET). Contrary to previous works, we also consider how the gateway discovery protocol affects user data flows that are routed to the infrastructure network. The cases of both delay-tolerant and delay-constrained user traffic are studied. We propose two schemes targeted at reliable,...
Vehicular Ad-hoc Network (VANET) is an emerging new technology integrating adhoc network, wireless LAN (WLAN) and cellular technology to achieve intelligent inter-vehicle communications and improve road traffic safety and efficiency. Vehicles are able to exchange information within these networks without the need of installing any infrastructure along the roadside VANETs can be used to improve the...
Being composed of car electronics and road-side communication devices, vehicular ad hoc networking (VANET) is the heart of intelligent transportation system. Beside car-to-car communications, the system also communicates to centralized points in infrastructure networks. Given that data load is heavy when the density of cars is high and that they move fast, roadside electronics potentially face congestion...
Inter-vehicle communication is one of the most significant transmission behaviors for diverse transportation applications in the vehicular ad hoc network (VANET). The existing studies have showed that clustering is a promising solution to data communication under the mobile environment, and especially the passive clustering (PC) technique is the efficient one compared to other clustering techniques...
Peer-to-peer systems in vehicular ad hoc networks are the scope of intensive research in last few years. Several proposed content sharing systems in the literature are based on a hybrid infrastructure containing static gateways that manage the file sharing between the vehicles. In this paper, we present CoFFee, a Cooperative and inFrastructure-Free peer-to-peer system, where the network do not rely...
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