Efficient SDN Controller for Safety Applications in SDN-Based Vehicular Networks: POX, Floodlight, ONOS or OpenDaylight?

2020 ◽  
Author(s):  
Karima Smida ◽  
Hajer Tounsi ◽  
Mounir Frikha ◽  
Ye-Qiong Song
Keyword(s):  
Vehicular Networks ◽  
Safety Applications ◽  
Sdn Controller

Information Fusion for Localization Within Vehicular Networks

2011 ◽  
Vol 64 (3) ◽  
pp. 401-416 ◽  
Author(s):  
Mahmoud Efatmaneshnik ◽  
Allison Kealy ◽  
Asghar Tabatabei Balaei ◽  
Andrew G. Dempster
Keyword(s):  
Intelligent Transportation Systems ◽  
Vehicular Networks ◽  
Transportation Systems ◽  
Cooperative Positioning ◽  
Dedicated Short Range Communications ◽  
Location Determination ◽  
Moving Vehicles ◽  
Map Data ◽  
Safety Applications ◽  
Navigation Information

Cooperative positioning (CP) is a localization technique originally developed for use across wireless sensor networks. With the emergence of Dedicated Short Range Communications (DSRC) infrastructure for use in Intelligent Transportation Systems (ITS), CP techniques can now be adapted for use in location determination across vehicular networks. In vehicular networks, the technique of CP fuses GPS positions with additional sensed information such as inter-vehicle distances between the moving vehicles to determine their location within a neighbourhood. This paper presents the results obtained from a research study undertaken to demonstrate the capabilities of DSRC for meeting the positioning accuracies of road safety applications. The results show that a CP algorithm that fully integrates both measured/sensed data as well as navigation information such as map data can meet the positioning requirements of safety related applications of DSRC (<0·5 m). This paper presents the results of a Cramer Rao Lower Bound analysis which is used to benchmark the performance of the CP algorithm developed. The Kalman Filter (KF) models used in the CP algorithm are detailed and results obtained from integrating GPS positions, inter-vehicular ranges and information derived from in-vehicle maps are then discussed along with typical results as determined through a variety of network simulation studies.

scholarly journals Evaluation of Content Dissemination Strategies in Urban Vehicular Networks

Information ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 163 ◽  
Author(s):  
Gonçalo Pessoa ◽  
Lucas Guardalben ◽  
Miguel Luís ◽  
Carlos Senna ◽  
Susana Sargento
Keyword(s):  
Vehicular Networks ◽  
Information Dissemination ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Superior Performance ◽  
Content Dissemination ◽  
Parking Lot ◽  
Hoc Networks ◽  
New Applications ◽  
Safety Applications

The main drivers for the continuous development of Vehicular ad-hoc Networks (VANETs) are safety applications and services. However, in recent years, new interests have emerged regarding the introduction of new applications and services for non-urgent content (e.g., videos, ads, sensing and touristic information) dissemination. However, there is a lack of real studies considering content dissemination strategies to understand when and to whom the content should be disseminated using real vehicular traces gathered from real vehicular networks. This work presents a realistic study of strategies for dissemination of non-urgent content with the main goal of improving content delivery as well as minimizing network congestion and resource usage. First, we perform an exhaustive network characterization. Then, several content strategies are specified and evaluated in different scenarios (city center and parking lot). All the obtained results show that there are two content distribution strategies that clearly set themselves apart due to their superior performance: Local Rarest Bundle First and Local Rarest Generation First.

scholarly journals Performance Evaluation of VeMAC Supporting Safety Applications in Vehicular Networks

2013 ◽  
Vol 1 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Hassan Aboubakr Omar ◽  
Weihua Zhuang ◽  
Atef Abdrabou ◽  
Li Li
Keyword(s):  
Performance Evaluation ◽  
Vehicular Networks ◽  
Safety Applications

scholarly journals QoS Aware and Fault Tolerance Based Software-Defined Vehicular Networks Using Cloud-Fog Computing

Sensors ◽  
2022 ◽  
Vol 22 (1) ◽  
pp. 401
Author(s):  
Sidra Abid Syed ◽  
Munaf Rashid ◽  
Samreen Hussain ◽  
Fahad Azim ◽  
Hira Zahid ◽  
...  
Keyword(s):  
Fault Tolerance ◽  
Response Time ◽  
Communication Systems ◽  
Vehicular Networks ◽  
Heuristic Algorithms ◽  
Fog Computing ◽  
Research Work ◽  
Tolerance Mechanism ◽  
Proposed Model ◽  
Sdn Controller

Software-defined network (SDN) and vehicular ad-hoc network (VANET) combined provided a software-defined vehicular network (SDVN). To increase the quality of service (QoS) of vehicle communication and to make the overall process efficient, researchers are working on VANET communication systems. Current research work has made many strides, but due to the following limitations, it needs further investigation and research: Cloud computing is used for messages/tasks execution instead of fog computing, which increases response time. Furthermore, a fault tolerance mechanism is used to reduce the tasks/messages failure ratio. We proposed QoS aware and fault tolerance-based software-defined V vehicular networks using Cloud-fog computing (QAFT-SDVN) to address the above issues. We provided heuristic algorithms to solve the above limitations. The proposed model gets vehicle messages through SDN nodes which are placed on fog nodes. SDN controllers receive messages from nearby SDN units and prioritize the messages in two different ways. One is the message nature way, while the other one is deadline and size way of messages prioritization. SDN controller categorized in safety and non-safety messages and forward to the destination. After sending messages to their destination, we check their acknowledgment; if the destination receives the messages, then no action is taken; otherwise, we use a fault tolerance mechanism. We send the messages again. The proposed model is implemented in CloudSIm and iFogSim, and compared with the latest models. The results show that our proposed model decreased response time by 50% of the safety and non-safety messages by using fog nodes for the SDN controller. Furthermore, we reduced the execution time of the safety and non-safety messages by up to 4%. Similarly, compared with the latest model, we reduced the task failure ratio by 20%, 15%, 23.3%, and 22.5%.

scholarly journals Reliable Communications for Vehicular Networks

2021 ◽  
pp. 33-49
Author(s):  
Halbast Rasheed Ismael ◽  
Siddeeq Y. Ameen ◽  
Shakir Fattah Kak ◽  
Hajar Maseeh Yasin ◽  
Ibrahim Mahmood Ibrahim ◽  
...  
Keyword(s):  
Information Exchange ◽  
Vehicular Networks ◽  
Communication Link ◽  
Vehicular Communications ◽  
Link Reliability ◽  
The Road ◽  
Reliable Communications ◽  
Velocity Information ◽  
Safety Applications ◽  
Routing Reliability

Vehicular communications, referring to information exchange among vehicles, and infrastructures. It has attracted a lot of attentions recently due to its great potential to support intelligent transportation, various safety applications, and on-road infotainment. The aim of technologies such as Vehicle-to-Vehicl (V2V) and Vehicle to-Every-thibg (V2X) Vehicle-to very-thing is to include models of connectivity that can be used in various application contexts by vehicles. However, the routing reliability of these ever-changing networks needs to be paid special attention. The link reliability is defined as the probability that a direct communication link between two vehicles will stay continuously available over a specified period. Furthermore, the link reliability value is accurately calculated using the location, direction and velocity information of vehicles along the road.

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