Simulation and Emulation Tools for Fog Computing

Author(s):  
Simar Preet Singh ◽  
Rajesh Kumar ◽  
Anju Sharma ◽  
S. Raji Reddy ◽  
Priyanka Vashisht

Background: Fog computing paradigm has recently emerged and gained higher attention in present era of Internet of Things. The growth of large number of devices all around, leads to the situation of flow of packets everywhere on the Internet. To overcome this situation and to provide computations at network edge, fog computing is the need of present time that enhances traffic management and avoids critical situations of jam, congestion etc. Methods: For research purposes, there are many methods to implement the scenarios of fog computing i.e. real-time implementation, implementation using emulators, implementation using simulators etc. The present study aims to describe the various simulation and emulation tools for implementing fog computing scenarios. Results: Review shows that iFogSim is the simulator that most of the researchers use in their research work. Among emulators, EmuFog is being used at higher pace than other available emulators. This might be due to ease of implementation and user-friendly nature of these tools and language these tools are based upon. The use of such tools enhance better research experience and leads to improved quality of service parameters (like bandwidth, network, security etc.). Conclusion: There are many fog computing simulators/emulators based on many different platforms that uses different programming languages. The paper concludes that the two main simulation and emulation tools in the area of fog computing are iFogSim and EmuFog. Accessibility of these simulation/emulation tools enhance better research experience and leads to improved quality of service parameters along with the ease of their usage.

2021 ◽  
Vol 29 (04) ◽  
pp. 56-75
Author(s):  
Narpat Asia ◽  
◽  
Pramod Paliwal ◽  

Purpose: Using the SERVQUAL model in the Natural Gas Distribution business context, the research paper examines and compares the quality of service parameters of two City Gas Distribution (CGD) companies engaged in Piped Natural Gas (PNG) distribution- one from public and other from the private sector. Research Design/Approach: Mapping of various activities pertaining to domestic (household) PNG service on the SERVQUAL dimensions was undertaken. Based on the mapping, a relevant data collection tool was deployed to collect the data on PNG service quality parameters from the respondents, who were current consumers of these companies. Hypotheses regarding various components of SERVQUAL model were tested towards the comparison of service quality of these companies. Data were analyzed by employing an appropriate statistical tool. Findings: Statistical results reveal a significant difference between the companies in terms of the quality of services offered by them. Interpretation of study results, managerial implications and suggestions have been discussed in the paper. Practical Implications: The study shall help in designing and implementing the quality of service parameters and subsequently devising or revising Service Level Agreements (SLA) for the domestic PNG customers of CGD companies. Originality/Value: Not much relevant research work on service quality issues has been undertaken in the CGD Sector in general and in the domestic Piped Natural Gas (PNG) sub-sector in particular. One of the outcomes of the study is also the mapping of various activities pertaining to domestic PNG service on the SERVQUAL dimensions.


2015 ◽  
Vol 14 (6) ◽  
pp. 5809-5813
Author(s):  
Abhishek Prabhakar ◽  
Amod Tiwari ◽  
Vinay Kumar Pathak

Wireless security is the prevention of unauthorized access to computers using wireless networks .The trends in wireless networks over the last few years is same as growth of internet. Wireless networks have reduced the human intervention for accessing data at various sites .It is achieved by replacing wired infrastructure with wireless infrastructure. Some of the key challenges in wireless networks are Signal weakening, movement, increase data rate, minimizing size and cost, security of user and QoS (Quality of service) parameters... The goal of this paper is to minimize challenges that are in way of our understanding of wireless network and wireless network performance.


Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1400
Author(s):  
Muhammad Adnan ◽  
Jawaid Iqbal ◽  
Abdul Waheed ◽  
Noor Ul Amin ◽  
Mahdi Zareei ◽  
...  

Modern vehicles are equipped with various sensors, onboard units, and devices such as Application Unit (AU) that support routing and communication. In VANETs, traffic management and Quality of Service (QoS) are the main research dimensions to be considered while designing VANETs architectures. To cope with the issues of QoS faced by the VANETs, we design an efficient SDN-based architecture where we focus on the QoS of VANETs. In this paper, QoS is achieved by a priority-based scheduling algorithm in which we prioritize traffic flow messages in the safety queue and non-safety queue. In the safety queue, the messages are prioritized based on deadline and size using the New Deadline and Size of data method (NDS) with constrained location and deadline. In contrast, the non-safety queue is prioritized based on First Come First Serve (FCFS) method. For the simulation of our proposed scheduling algorithm, we use a well-known cloud computing framework CloudSim toolkit. The simulation results of safety messages show better performance than non-safety messages in terms of execution time.


2020 ◽  
Vol 33 (8) ◽  
pp. e4340 ◽  
Author(s):  
Mostafa Haghi Kashani ◽  
Amir Masoud Rahmani ◽  
Nima Jafari Navimipour

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