scholarly journals Realistic Model of Mobility based on Location and Route for VANET

2019 ◽  
Vol 8 (2) ◽  
pp. 5111-5116
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Packet Loss ◽  
Research Work ◽  
Realistic Model ◽  
Mobility Model ◽  
Transmission Delay ◽  
Network Simulator ◽  
Mobility Models ◽  
Optimal Solutions

In this research work, we propose two realistic mobility models named as location based realistic mobility model and route based realistic mobility model. In location based realistic mobility model speed and velocity is updating and route based realistic mobility model implies how many routes are available. With these models the targeted position is set and vehicles are moving according to the same position. Hence the problem of routing is resolved which is encountered in existing realistic mobility model. For implementation of our models, we use open source software named as network simulator NS-3 and traffic simulator MOVE with SUMO. We also compare our models with the existing realistic models in terms of performance matrices: packet loss, throughput and transmission delay. Since the vehicles are moving according to targeted position, so as application aspects we predict accidents and lots of traffic and with the help of prediction we will choose some optimal solutions.

scholarly journals A Comprehensive Open-Source Simulation Framework for LiFi Communication

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2485
Author(s):  
Shakir Ullah ◽  
Saeed Ur Rehman ◽  
Peter Han Joo Chong
Keyword(s):  
Open Source ◽  
Hybrid System ◽  
Resource Sharing ◽  
Optical Gain ◽  
Packet Delay ◽  
Mobility Model ◽  
Network Simulator ◽  
Simulation Framework ◽  
Light Spectrum ◽  
Seamless Integration

Light Fidelity (LiFi) is a new candidate for wireless networking that utilizes the visible light spectrum and exploits the existing lighting infrastructure in the form of light-emitting diodes (LEDs). It provides point-to-point and point-to-multipoint communication on a bidirectional channel at very high data rates. However, the LiFi has small coverage, and its optical gain is closely related to the receiver’s directionality vis-à-vis the transmitter, therefore it can experience frequent service outages. To provide reliable coverage, the LiFi is integrated with other networking technologies such as wireless fidelity (WiFi) thus forming a hybrid system. The hybrid LiFi/WiFi system faces many challenges including but not limited to seamless integration with the WiFi, support for mobility, handover management, resource sharing, and load balancing. The existing literature has addressed one or the other aspect of the issues facing LiFi systems. There are limited free source tools available to holistically address these challenges in a scalable manner. To this end, we have developed an open-source simulation framework based on the network simulator 3 (ns-3), which realizes critical aspects of the LiFi wireless network. Our developed ns-3 LiFi framework provides a fully functional AP equipped with the physical layer and medium access control (MAC), a mobility model for the user device, and integration between LiFi and WiFi with a handover facility. Simulation results are produced to demonstrate the mobility and handover capabilities, and the performance gains from the LiFi-WiFi hybrid system in terms of packet delay, throughput, packet drop ratio (PDR), and fairness between users. The source code of the framework is made available for the use of the research community.

Prospects of Open Source Software for Maximizing the User Expectations in Heterogeneous Network

2021 ◽  
pp. 257-271
Author(s):  
Pushpa Singh ◽  
Rajeev Agrawal
Keyword(s):  
Machine Learning ◽  
Open Source ◽  
Real Time ◽  
Open Source Software ◽  
Heterogeneous Networks ◽  
Heterogeneous Network ◽  
Research Work ◽  
Software Tool ◽  
Knn Classifier ◽  
User Expectations

This article focuses on the prospects of open source software and tools for maximizing the user expectations in heterogeneous networks. The open source software Python is used as a software tool in this research work for implementing machine learning technique for the categorization of the types of user in a heterogeneous network (HN). The KNN classifier available in Python defines the type of user category in real time to predict the available users in a particular category for maximizing profit for a business organization.

scholarly journals OPEN SOURCE CLOUD-BASED TECHNOLOGIES FOR BIM

2018 ◽  
Vol XLII-2 ◽  
pp. 607-614 ◽  
Author(s):  
S. Logothetis ◽  
E. Karachaliou ◽  
E. Valari ◽  
E. Stylianidis
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Research Work ◽  
3D Models ◽  
Web Interface ◽  
Multiple Stakeholders ◽  
Architectural Engineering ◽  
Starting Point ◽  
Cloud Technologies ◽  
Survey Approach

This paper presents a Cloud-based open source system for storing and processing data from a 3D survey approach. More specifically, we provide an online service for viewing, storing and analysing BIM. Cloud technologies were used to develop a web interface as a BIM data centre, which can handle large BIM data using a server. The server can be accessed by many users through various electronic devices anytime and anywhere so they can view online 3D models using browsers. Nowadays, the Cloud computing is engaged progressively in facilitating BIM-based collaboration between the multiple stakeholders and disciplinary groups for complicated Architectural, Engineering and Construction (AEC) projects. Besides, the development of Open Source Software (OSS) has been rapidly growing and their use tends to be united. Although BIM and Cloud technologies are extensively known and used, there is a lack of integrated open source Cloud-based platforms able to support all stages of BIM processes. The present research aims to create an open source Cloud-based BIM system that is able to handle geospatial data. In this effort, only open source tools will be used; from the starting point of creating the 3D model with FreeCAD to its online presentation through BIMserver. Python plug-ins will be developed to link the two software which will be distributed and freely available to a large community of professional for their use. The research work will be completed by benchmarking four Cloud-based BIM systems: Autodesk BIM 360, BIMserver, Graphisoft BIMcloud and Onuma System, which present remarkable results.

scholarly journals A Novel Group Mobility Model for Software Defined Future Mobile Networks

2021 ◽  
Author(s):  
Sureshkumar A ◽  
Surendran D
Keyword(s):  
Mobile Networks ◽  
Packet Loss ◽  
Transition Probabilities ◽  
Research Work ◽  
Mobility Model ◽  
Mathematical Framework ◽  
Mobile Nodes ◽  
Network Efficiency ◽  
Group Mobility ◽  
Signaling Cost

Abstract Nowadays, a massive amount of data leads to cause network traffic and inflexible mobility in future mobile networks. A new Group Mobility Model (GMM) named MoMo is introduced that addresses the issue of the aforementioned problems. Even though, software defined network (SDN) is functional with network-rooted mobility protocols that enhance the network efficiency. Some existing network-rooted mobility administration methods still undergo handover delay, packet loss, and high signaling cost through handover processing. In this research work, SDN-based fast handover for GMM is proposed. Here, the neighbor number of evolving node transition probabilities of the mobile node (MN) and their obtainable resource probabilities are estimated. This makes a mathematical framework to decide the preeminent number of the evolving nodes and then allot these to mobile nodes virtually with all associations finished by the exploit of Open-Flow tables. The performance examination demonstrates that the proposed SDN rooted GMM technique has the enhanced performance than the conventional handover process and further technique by handover latency, signaling cost, network throughput, and packet loss.

Investigation of random waypoint and steady state random waypoint mobility models in NS-3 using AODV

2020 ◽  
Vol 26 (4) ◽  
pp. 267-274
Author(s):  
Alok Singh ◽  
Saurabh Sharma ◽  
Rajneesh K. Srivastava
Keyword(s):  
Steady State ◽  
Mobility Model ◽  
Transition Phase ◽  
Network Simulator ◽  
Mobility Models ◽  
Mobile Nodes ◽  
Warm Up ◽  
High Level ◽  
Simulation Time ◽  
Random Waypoint

NS-3 has been one of the popular network simulator software for many years especially in research related to Mobile Adhoc Networks (MANETs). In NS-3, there is provision of several mobility models including Random Waypoint (RWP) mobility model and Steady State Random Waypoint (SSRWP) mobility model. RWP mobility model suffers from the transition phase related imperfection. SSRWP mobility model overcomes this limitation of RWP mobility by allowing the steady state initialization states of nodes in terms of position, speed and pause time of mobile nodes right from the beginning of the simulation. As SSRWP mobility model avoids any requirement of warm-up (cut-off) phase of RWP mobility model, it saves a significant amount of time of warm-up (cut-off) phase as well as establishes a high level of confidence in results obtained due to absence of any subjective guess. In the present work, RWP and SSRWP mobility models have been investigated using AODV routing protocol and it has been found that a way to mitigate the misleading effect of the transition phase of RWP mobility model is to have a sufficiently large simulation time which results, to a good extent, in convergence of performance of RWP mobility model toward that of SSRWP mobility model.

scholarly journals Enhancing Mobility Based on Realistic Models for Vehicular Ad Hoc Networks

2021 ◽  
Vol 10 (4) ◽  
pp. 220-227
Author(s):  
Hariharasudhan V. ◽  
Vetrivelan P*
Keyword(s):  
Real Time ◽  
Vehicular Ad Hoc Networks ◽  
Network Reliability ◽  
Realistic Model ◽  
Mobility Model ◽  
Communication Link ◽  
Communication Model ◽  
Mobility Models ◽  
Traffic Demand ◽  
The Real

Creation and maintaining of the one-to-one communication link between the nodes in Vehicular Adhoc Networks are challenging. The model which is very much efficient for one particular scenario will not work at the same level of efficiency for another environment. The mobility of the nodes in the network plays a crucial role in establishing a reliable communication model in the VANETs. Analyzing the nature of mobility inside a particular network based on logical and historical data paves an efficient way in the routing of packets by predicting the best route and improve the quality of the network, reliability, and other performance in terms of serviceability. This paper aims to analyze the drawbacks of existing mobility models utilizing various network quality parameters by classifying them into microscopic and macroscopic mobility models. With the insight gained from the analysis, we propose two methodologies where the realistic model for the VANETs can be established. The models are architected with the help of the information provided by the Geographic information system. The conventional mobility models include excessive details such as road and street layouts, intersection with traffic signals, acceleration and deceleration, building, and other obstacles in a realistic mobility model, that requires prolonged time to design and optimize, it should complicate the simulation. Designing an effective, realistic mobility model is crucial. The key objectives of this proposal are to architect realistic VANETs mobility models by taking into account the real-time road environment and actual data according to the traffic demand and improving the real-time performance of VANETs

Open source software for library systems – 2

2016 ◽  
Vol 33 (9) ◽  
pp. 10-13
Author(s):  
Adetoun A. Oyelude
Keyword(s):  
Operating System ◽  
Open Source ◽  
Open Source Software ◽  
Design Methodology ◽  
Information Science ◽  
Research Work ◽  
Informed Decision Making ◽  
Software Library ◽  
Content Type ◽  
Library Management

Purpose This paper aims to concentrate on reviewing articles on open source software (OSS), found on the internet, that were published in the year 2016. Design/methodology/approach A critical look is taken at OSS generally as found in the literature and also on the commonly used OSS in libraries and information science work or research work. Findings It is hoped that this review will assist in pointing out the trends and aid in informed decision-making, as it concerns OSS. Social implications Akintomide (2016) described OSS as a part of human existence which is exhibited in mobile devices that run on the android operating system, to computers, laptops and servers that run on the Linux operating system, to other software (Library management software inclusive) that are open access. Originality/value The openness of it makes the users (libraries and scholars) leave documentation that steers how the open software technologies are implemented and by whom. They are free, have used communities, are vetted by users and are constantly in development.

Issues and Aspects of Open Source Software Usage and Adoption in the Public Sector

2009 ◽  
pp. 1577-1591
Author(s):  
Gabor Laszlo
Keyword(s):  
Public Sector ◽  
Open Source ◽  
Open Source Software ◽  
Research Work ◽  
Complex Model ◽  
Primary Objective ◽  
Public Authorities ◽  
The Public ◽  
Proposed Model ◽  
To Come

This chapter introduces L-PEST model as the proposed tool for better understanding the fields are influenced by motivations and adaptation policy on FLOSS of public authorities and governments. Software usage in the public sector is a highly complex topic. In the confines of this chapter the selected case studies will show consideration to the vastly different needs and capacities and the different approaches and motivations towards the utilization of FLOSS by governments and/or local authorities. The primary objective of this chapter is to identify and describe the actors associated to the usage of FLOSS within and by the public sector. This chapter has made an attempt to fill this research gap and place the different actors into one complex model. It is hoped the proposed model assists better clarifying the intricate relationship between relevant factors. Nevertheless, much more research work is needed in the years to come. According to Michel Sapin, French Minister in charge of Public Administration and e-Government (2001), “The next generation e-government has two requirements: interoperability and transparency. These are the two strengths of open source software. Therefore, I am taking little risk when I predict that open source software will take a crucial part in the development of e- Government in the years to come.”

Prospects of Open Source Software for Maximizing the User Expectations in Heterogeneous Network

2018 ◽  
Vol 9 (3) ◽  
pp. 1-14 ◽  
Author(s):  
Pushpa Singh ◽  
Rajeev Agrawal
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Heterogeneous Network ◽  
Research Work ◽  
Software Tool ◽  
Business Organization ◽  
Machine Learning Technique ◽  
Knn Classifier ◽  
Learning Technique ◽  
User Expectations

This article focuses on the prospects of open source software and tools for maximizing the user expectations in heterogeneous networks. The open source software Python is used as a software tool in this research work for implementing machine learning technique for the categorization of the types of user in a heterogeneous network (HN). The KNN classifier available in Python defines the type of user category in real time to predict the available users in a particular category for maximizing profit for a business organization.

Issues and Aspects of Open Source Software Usage and Adoption in the Public Sector

2011 ◽  
pp. 445-459
Author(s):  
Gabor Laszlo
Keyword(s):  
Public Sector ◽  
Open Source ◽  
Open Source Software ◽  
Research Work ◽  
Complex Model ◽  
Primary Objective ◽  
Public Authorities ◽  
The Public ◽  
Proposed Model ◽  
To Come

This chapter introduces L-PEST model as the proposed tool for better understanding the fi elds are influenced by motivations and adaptation policy on FLOSS of public authorities and governments. Software usage in the public sector is a highly complex topic. In the confines of this chapter the selected case studies will show consideration to the vastly different needs and capacities and the different approaches and motivations towards the utilization of FLOSS by governments and/or local authorities. The primary objective of this chapter is to identify and describe the actors associated to the usage of FLOSS within and by the public sector. This chapter has made an attempt to fill this research gap and place the different actors into one complex model. It is hoped the proposed model assists better clarifying the intricate relationship between relevant factors. Nevertheless, much more research work is needed in the years to come. According to Michel Sapin, French Minister in charge of Public Administration and e-Government (2001), “The next generation e-government has two requirements: interoperability and transparency. These are the two strengths of open source software. Therefore, I am taking little risk when I predict that open source software will take a crucial part in the development of e-Government in the years to come.”

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