Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"RSUs"”.
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Two Tier Hybrid Routing Schemes for Vehicular Ad Hoc Networks Based on Reinforcement Learning
… system consisting of traffic-aware located RSUs and a reinforcement learning routing strategy. Our proposed method includes two main tiers. We first divided the geographical area into equal-sized grids; then using the traffic flow patterns of the area, the protocol will suggest the optimal …
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A roadside units positioning framework in the context of vehicle-to-infrastructure based on integrated AHP-entropy and group-VIKOR
The positioning of roadside units (RSUs) in a vehicle-to-infrastructure (V2I) communication system may have an impact on network performance. Optimal RSU positioning is required to reduce cost and maintain the quality of service. However, RSU positioning is considered a difficult task due to …
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Social-based trustworthy data forwarding in vehicular delay tolerant networks
… to strategically deploy Road-Side Units (RSUs) infrastructure in order to im-prove reliability, efficiency, and high packet delivery for VANET. It is based on multiple social centrality assessments of street network which help in placing RSUs at high social intersections. This social …
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Data Collection, Dissemination, and Security in Vehicular Ad Hoc Network
… and short contacts, fixed road-side units (RSUs) that overhear and broadcast to vehicles, and a central server. Vehicles move along roads, collect data and process them, and disseminate the data to other vehicles and RSUs. The central server aggregates data collected by vehicles, overviews …
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Connected Vehicle Technology: User and System Performance Characteristics
… The optimal deployment of road-side units (RSUs) is another important factor that affects the communication stability and the traffic conditions estimates and reliability. Thus, an optimization approach was developed to identify the optimal RSUs locations with the objective function of …
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Wireless Networking for Vehicle to Infrastructure Communication and Automatic Incident Detection
… the number of vehicles aware of Road Side Units (RSUs) in order to enhance the accuracy of our AID technique. In our proposed Method. IEEE 802.11 standard is used at RSUs with multiple antennas to assign each lane a specific channel. To validate our proposed approach. we present both analytical …
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The Impact of Cyberattacks on Safe and Efficient Operations of Connected and Autonomous Vehicles
… Vehicles communicated with Road-Side Units (RSUs) to make intersection reservations – effectively simulating CAV vehicle network. Denial of Service (DoS) and Man in the Middle (MITM) attacks were simulated by dropping and delaying vehicle's intersection reservation requests, respectively. …
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An Empirical Method of Ascertaining the Null Points from a Dedicated Short-Range Communication (DSRC) Roadside Unit (RSU) at a Highway On/Off-Ramp
… communications (DSRC) roadside units (RSUs) allows a connected or automated vehicle to acquire information from the surrounding environment using vehicle-to-infrastructure (V2I) communication. However, wireless communication using DSRC has shown to exhibit null points, at repeatable …
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FRIEND: A Cyber-Physical System for Traffic Flow Related Information Aggregation and Dissemination
… intervals (e.g. every kilometer or so). The RSUs placed on opposite sides of the roadway constitute a logical unit and are connected by optical fiber under the median. Unlike inductive loop detectors, adjacent RSUs along the roadway are not connected with each other, thus avoiding the huge …
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A Framework for Dynamic Traffic Monitoring Using Vehicular Ad-Hoc Networks
… themselves, other vehicles, and roadside units (RSUs) to improve driver safety, provide enhanced monitoring to TMCs, and deliver real-time traffic conditions to drivers.</p> <p> In this dissertation, we contribute and develop a framework for dynamic trafficmonitoring (DTMon) using vehicular …
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MDP-based Vehicular Network Connectivity Model for VCC Management
… vehicle being in the range of road-side units (RSUs) for data transmissions. We propose an markov-decisision process (MDP) model to track vehicles' connection status and estimate their reliability for data transmissions. Also, from analyses, we observed that higher vehicle connectivity presents …
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Secured information dissemination and misbehavior detection in VANETs
… a centralized entity via. the roadside units (RSUs). However, false or fabricated information injected by an attacker (or a malicious vehicle) within the network can disrupt the decision-making process of surrounding vehicles or any traffic-monitoring system. Since in VANETs the size of the …
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Unmanned Aerial Vehicles and Edge Computing in Wireless Networks
… is not always available at roadside units (RSUs). The channel varies fast due to vehicles' mobility, and it is pretty challenging to estimate CSI and feed back the RSUs for processing the VEC algorithms. To address the above problem, we introduce a large-scale CSI-based partial computation …
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Stochastic Geometry for Vehicular Networks
… vehicular nodes are served by roadside units (RSUs) as well as cellular macro base stations (MBSs). For this setup, we present the downlink coverage analysis of the typical receiver in the presence of shadowing effects. We address the technical challenges induced by the inclusion of shadowing …
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Security and Privacy of Vehicular ad hoc Networks Supporting Revocation
… or fixed infrastructure, called road-side units (RSUs). One of the main goals for VANETs is to improve vehicle safety. Work has begun on defining and implementing VANET safety applications. VANET security services will be standardized in IEEE 1609.2. Safety application message broadcasts will …
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Secure and privacy-preserving fog-assisted vehicular crowdsensing
… servers and organizations by roadside units (RSUs). Therefore, this work presents a privacy-preserving protocol for enhancing security in VCS-based road surface condition monitoring systems using fog computing. Furthermore, in order to revoke compromised users from the system, this work offers …
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Leveraging vehicular cloud computing through location and request prediction
… a large number of vehicles and road-side units (RSUs) is a significant challenge. There are essential contributions to deal with these problems, such as utilizing MEC (Mobile Edge Computing), and a hybrid architecture of cloud and fog computing which can create an efficient and adaptable resource …
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Multi-server federated learning in vehicular edge computing
… vehicles act as clients and roadside units (RSUs) host FL servers at the edge. However, practical deployments face multiple challenges: highly non-IID and noisy data across vehicles, heterogeneous computation and communication resources, private training costs, intermittent connectivity, and …
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Investigating seamless handover in VANET systems
… at the cost of overlapping signals of adjacent RSUs. Therefore, a framework is needed to be able to calculate the regions of overlap in adjacent RSU coverage ranges to guarantee ubiquitous connectivity. This thesis is about providing such a framework by analysing in detail the communication …
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Optimizing shared-use curbside spaces in connected transportation networks accounting for uncertainty
… can have real-time communication with the RSUs . We used a fine-resolution simulation framework to evaluate curbside management strategies for ride-sourcing and delivery vehicles. Utilizing microsimulation tools Vissim and EPA-MOVES, we analyzed mobility and environmental impacts in both a …
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