A Review on Fog Computing: Architecture, Fog with IoT, Algorithms and Research Challenges

Connecting your company to the cloud, you get access to the above-mentioned services from any location and via different devices. Moreover, there is no need to maintain local servers and worry about downtimes — the vendor supports everything for you, saving you money. Currently, she is a Professor and Doctoral Supervisor with the College of Computer Science and Electronic Engineering, Hunan University, Changsha. She is also the Director with the Department of Network and Information Security, Hunan University. From 2008 to 2009, she was a Visiting Scholar with the University of California at Irvine, Irvine, CA, USA. She has authored/coauthored more than 40 papers.

fog computing architecture

A carefully researched forecast by the same statistical analysis company says that the world will see approximately 29.42 billion active IoT devices by 2030. Manufacturing and financial companies need to make instant decisions using analytics data. They can benefit from fogging with its speedy transfer of real-time data. Your IoT systems are collecting too much data, and you do not need all this data.

Fog computing in enabling 5G-driven emerging technologies for development of sustainable smart city infrastructures

Edge computing sets up computing servers at the gateway of the network while fog computing brings compute servers into the LAN. On the other hand, fog is the way to bring cloud capabilities to the edge of the network . The difference between fog computing and edge computing is only implement performance. To explain the capabilities of the computing technologies, in presents a performance comparison of computing technologies as in Table 1.

fog computing architecture

Thus, the Fog computing paradigm that allows applications to perform computing operations in-between the cloud and the end devices has emerged. In Fog architecture, IoT devices and sensors are connected to the Fog devices which are located in close proximity to the users and it is also responsible for intermediate computation and storage. Most computations will be done on the edge by eliminating full dependencies on the cloud resources.

Advantages of Cloud for IoT

These are indeed just examples, i.e., in a particular fog computing system, the specific elements can be different . However, the presented dimensions—device, system, and functionality—play an important fog vs cloud computing role in all fog computing systems. Fog networking supports the Internet of Things concept, in which most of the devices used by humans on a daily basis will be connected to each other.

  • IoT can provide alert against any possible intruders in a school or college with the use of laser sensors, alarms and others and even the teachers may have access to alert buttons which can help them take actions in those situations .
  • However, MEC may be under different workloads from the IoT and this may not have the required amount of resources to efficiently handle the workflows.
  • Fog and edge computing, at least in industrial and manufacturing applications, are systems that attempt to collect and process data from local assets/devices more efficiently than traditional cloud architectures.
  • As shown fog is intermediate layer between cloud and devices which generate the data as shown.

The goal of fog computing is to use the cloud only for long-term and resource-intensive analytics. These devices at the ‘edge’ of the cloud, i.e., where the organization’s system interacts with the outside world, take care of short-term and time-critical analytics such as fault alerts, alarm status, etc. Fog computing is a decentralized infrastructure that places storage and processing components at the edge of the cloud, where data sources such as application users and sensors exist.

A P4-assisted task offloading scheme for Fog networks: An intelligent transportation system scenario

To address the second objective, we have employed two methods for selection of the best frequency. We then compare signal coverage for Wi-Fi bands with each other to finally select the possibly best https://globalcloudteam.com/ frequency. Simulation results show that newly introduced Wi-Fi Halow operating at sub 1GHz has relatively better coverage which is also cross-verified by the theoretical bijective soft-set approach.

An effective offloading strategy is an inevitable requirement and one of the most significant challenges for real-time fog-IoHT applications. History demonstrated that the evolution of humanity goes hand in hand with the development and application of science and technology in the field of medicine and healthcare. Decades ago, information technology applications in the medical area were invented to collect, monitor and control the patient status remotely, decision-making treatment for patients .

Challenges and future research directions

They are intended to support resource-intensive IoT apps that require low latency. I wonder what the ramifications will be in certain industries that are tied to traditional data centers and cloud deployment models. I understood cloud computing, but fog was something I was not familiar with.

fog computing architecture

Experiment results demonstrated the efficiency of the proposed solution compared to existing related approaches. The integration of fog computing into healthcare IoT applications aim to make these real-time eHealth applications is the inevitable trend. To solve this problem, Zhang et al. proposed an efficient offloading schema for fog servers in real-time eHealth systems. Realizing the limitations of healthcare IoT applications based on the Cloud, Awaisi et al. proposed an efficient healthcare IoT based on fog computing to enhance efficiency and security. Specifically, they proposed an efficient healthcare IoT architecture based on fog computing.

The application of internet of things in healthcare: a systematic literature review and classification

It is important to note that these components must be governed by an abstraction layer that exposes a common interface and a common set of protocols for communication. Since fog components directly interact with raw data sources, security must be built into the system even at the ground level. Some processors are intelligent enough to fill the information based on historical data if one or more sensors fail. This data explosion has, however, left organizations questioning the quality and quantity of data that they store in the cloud. Cloud costs are notorious for escalating quickly, and sifting through petabytes of data makes real-time response difficult.

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