Network Emulator of Transmission Parameters of Data Networks

Číka, Petr; Grabovský, Štěpán; Zeman, Václav; Člupek, Vlastimil

doi:10.1109/icumt.2018.8631254

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…Knowing the differences between all these strategies is key to understand what each can offer. It should be pointed out that in the literature [14]- [17], there is no agreement with regards to the simulation and emulation definitions. Therefore, the following definitions of simulation, HIL, and emulation are used in this paper: 1) Firstly, simulation is defined as a software-based technique that is based in an analytical model, which represents the key characteristics, behaviors, and functions of the real system describing them using mathematical tools for a system virtualization in a controlled environment.…”

Section: A Testing Strategiesmentioning

confidence: 97%

“…The disadvantage of this approach is the fact that the real environment needs to be generalized to describe the real system. 2) Then, the hardware in the loop (HIL) is a technique where real hardware is present in the simulation loop, being the testing and the evaluation of the system carried out in real-time [17]. HIL is most often used in the development and testing of embedded systems when those systems cannot be tested easily, thoroughly, and repeatable in their operational environments [18].…”

Section: A Testing Strategiesmentioning

confidence: 99%

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An Overview of Current IP Network Emulators for the Validation of Railways Wireless Communications

et al. 2020

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Communication technologies are in continuous evolution and as well, the different applications making use of them. In order to succeed with the roll-out of the communication-based applications, it is required that the communications technologies are intensively tested and validated before deployment. Current strategies for testing and validation cover field tests and laboratory tests. Railways is also taking advantage of the communication technologies evolution, and therefore, there is a need for having testing and validation strategies adapted to the railway environment, especially for safety-critical applications. Field tests and laboratory tests also apply in Railways. In the frame of laboratory tests, this paper includes an overview of different network emulators existing currently in the market. Furthermore, an analysis of the gaps of the network emulators with regards to the needs of the railways environment is also included. The goal of this paper is to show that network emulators are a flexible cost-effective solution for communication technologies testing purposes. Additionally, this paper also shows that there is a need to adapt current emulators to the railway environment in order to test and validate the future railway applications based on communication technologies. INDEX TERMS IP Communication, Laboratory testing, Network Emulator, Railways, Wireless Communications I. INTRODUCTION Nowadays, communication technologies are in continuous evolution, offering a higher performance that allows getting further services. In order to adopt these new services, the communication technology in use has to be tested to ensure the required performance. However, due to the time constraints and cost of infrastructure deployment, the real performance of new communication technologies are not simple to be tested. Railways is also aiming to move forwards in this field of the communication technologies to make railways more efficient, safer and profitable [1], even if the main stakeholders interested in the deployment of these new communication technologies are mobile operators. Future railway services are pushing restrictive requirements such as large bandwidth (high data rate transmission capabilities) [2] and low latency [3]. To research these type of requirements (among others) in the railway communication field, some European projects were built, such as Shift2Rail [4] and FRMCS [5]. Shift2Rail project covers the future adaptable communications for railways, but also several different topics such as train integrity, interconnections between the different components inside the train car apart from the communication technologies. FRMCS project is also analyzing new mobile communications capabilities for railways. With regard to validation, particularly, Shift2Rail includes in its innovation program, a research activity related to the development of a new laboratory test framework, which comprises simulation tools and testing procedures for carrying out open tests with clear operational rules and simple certification ...

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Section: A Testing Strategiesmentioning

confidence: 97%

Section: A Testing Strategiesmentioning

confidence: 99%

An Overview of Current IP Network Emulators for the Validation of Railways Wireless Communications

et al. 2020

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“…and executables on the Linux kernel operating system were selected for performance analysis using Apache JMeter [34]. Apache JMeter is open-source software used to perform load testing, performance testing, and functional testing on web applications and other web services [35].…”

Section: Ii4 Tool For Testingmentioning

confidence: 99%

Single server-side and multiple virtual server-side architectures: Performance analysis on Proxmox VE for e-learning systems

Ariyanto

2023

ITEGAM

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At this time, almost all educational institutions use the e-learning system to support learning. The factor that plays the most role in the comfortable use of a system is the performance aspect. This type of single-server architecture is very commonly applied in building a system, but this system is actually less efficient because it does not pay attention to the level of availability. In this study, a server architecture was built in the form of multiple virtual servers utilizing virtualization on Proxmox by applying reverse proxy techniques and storage clustering to increase system availability in building an e-learning Moodle system. The design of multiple virtual server architectures uses prepare, plan, design, implementation, test and optimization methodologies. The results of the research on the testbed and test plan show that the multiple virtual server architecture has superior availability compared to the single server architecture. Based on the User Behavior Modeling Performance (UBMP) test results, the multiple virtual server architecture is also superior, with a maximum value of 100 concurrent users on the multiple virtual server-side architecture, where the availability level is 80.25%, while on the single server, it is lower with a value of 80 users and an availability level of 78.4%.

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Stress Tester and Network Emulator in Apache JMeter

Číka

Člupek

2019

2019 PhotonIcs &Amp; Electromagnetics Research Symposium - Spring (PIERS-Spring)

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Network Emulator of Transmission Parameters of Data Networks

Cited by 3 publications

References 13 publications

An Overview of Current IP Network Emulators for the Validation of Railways Wireless Communications

An Overview of Current IP Network Emulators for the Validation of Railways Wireless Communications

Single server-side and multiple virtual server-side architectures: Performance analysis on Proxmox VE for e-learning systems

Stress Tester and Network Emulator in Apache JMeter

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