scholarly journals Anonymous, Fault-Tolerant Distributed Queries for Smart Devices

2019 ◽  
Vol 3 (2) ◽  
pp. 1-29
Author(s):  
Edward Tremel ◽  
Ken Birman ◽  
Robert Kleinberg ◽  
Márk Jelasity
Keyword(s):  
Fault Tolerant ◽  
Smart Devices ◽  
Distributed Queries

scholarly journals Enhancing the Reliability of Cellular Internet of Things through Agreement

2020 ◽  
Vol 10 (21) ◽  
pp. 7699
Author(s):  
Shin-Hung Pan ◽  
Shu-Ching Wang
Keyword(s):  
Internet Of Things ◽  
Large Scale ◽  
Fault Tolerant ◽  
Smart Cities ◽  
Smart Devices ◽  
The Internet ◽  
Smart Transportation ◽  
Fifth Generation ◽  
Smart Healthcare ◽  
Wide Range

Because the Internet of Things (IoT) can provide a global service network through various smart devices, the IoT has been widely used in smart transportation, smart cities, smart healthcare, and factory automation through the Internet connection. With the large-scale establishment and 5G (fifth generation) wireless networks, the cellular Internet of Things (CIoT) will continue to be developed and applied to a wide range of applications. In order to provide a reliable application of CIoT, a safe and reliable network topology MECIoT is proposed in this study. To improve the reliability and fault-tolerant capability of the network proposed, the problem of reaching agreement should be revisited. Therefore, the applications in the system can still be performed correctly even if some processing units (PUs) in the system have failed. In this study, a new protocol is proposed to allow all normal PUs in MECIoT to reach an agreement with the minimum amount of data exchanges required and the maximum number of failed PUs allowed in MECIoT. In the end, the optimality of the protocol has been proven by mathematical method.

scholarly journals Proactive Fault Tolerance Policy for Virtual Machine Management in Private Cloud Environment

2019 ◽  
Vol 8 (4) ◽  
pp. 2793-2796
Keyword(s):  
Cloud Computing ◽  
Fault Tolerant ◽  
Cloud Model ◽  
Internet Technology ◽  
Smart Devices ◽  
Delivery Model ◽  
Innovative Methods ◽  
Recent Advancement ◽  
Tremendous Amount ◽  
Proactive Fault Tolerance

Cloud computing being a new delivery model has many research challenges. It opens the door to great amount of innovative methods and practices. Many researchers have come-up with novel and efficient fault tolerant solutions for the cloud. With the rapid advancement in internet technology, usage of smart devices and social networking are giving rise to tremendous amount of data and demands resources like never before. Cloud computing delivery model provides solution to the need of the day. The recent advancement in IoT, Edge computing etc, has expanded the scope of visualizing cloud computing with a different perspective. There is a need for re-provisioning the existing components of the cloud model. Most of the research on fault tolerant algorithms, mechanisms and techniques are focused on datacenters. In this paper we propose fault detection and prevention policies for VM creation lifecycle derived from cloud computing patterns

scholarly journals Practical Byzantine Consensus for Internet-of-Things

2021 ◽  
Author(s):  
Himanshu Goyal ◽  
Sudipta Saha
Keyword(s):  
Fault Tolerance ◽  
Fault Tolerant ◽  
Synchronous Communication ◽  
Smart Devices ◽  
Byzantine Fault Tolerance ◽  
Smart Systems ◽  
Byzantine Fault ◽  
Consensus Strategy ◽  
High Chance ◽  
Decentralised System

Use of IoT/WSN assisted smart-systems in the current age is making our living much more easier. However, components of such systems bear a high chance of getting compromised which may result in a substantial damage or loss. Use of fault tolerant consensus protocols provides a way towards solving this problem. Existing solutions for IoT/WSN systems mostly assume simple non-Byzantine node failures which is not enough to solve the problem. To combat the presence of smart devices with malicious intention, Byzantine fault tolerance support is highly essential in building trustworthy decentralised system. Byzantine fault tolerance has not been addressed much in the context of IoT/WSN because of its inherent requirement of extensive data sharing among the nodes. In this work, we approach to bring a solution to the problem using synchronous communication. In particular, we recast the well-known \textit{Practical Byzantine Fault Tolerant} (PBFT) consensus strategy to an efficient form that is suitable for use in IoT/WSN systems. We demonstrate that our proposed design can work upto 80% faster and consume upto 82% lesser energy compared to a naive implementation of the strategy in publicly available IoT/WSN testbed having 45 nodes.<br>

scholarly journals QoS-aware CR-BM-based hybrid framework to improve the fault tolerance of fog devices

2021 ◽  
Vol 19 (1) ◽  
pp. 66-76
Author(s):  
P. Sharma ◽  
P. K. Gupta
Keyword(s):  
Fault Tolerance ◽  
Performance Metrics ◽  
Fault Tolerant ◽  
Optimal Placement ◽  
Smart Devices ◽  
Computation Cost ◽  
Hybrid Framework ◽  
Iot Devices ◽  
And Storage ◽  
The Internet Of Things

With the evolution of the Internet of Things (IoT), the use of smart devices has completely changed the day-to-day life of the human being. IoT devices are of flexible use which is implemented to sense the environment and data efficiently. However, these devices have some constrained capabilities concerning fault tolerance, computation cost, and storage. This requires an improved framework and algorithms for performing effective operations. In this paper, a hybrid framework is proposed, which incorporates the various IoT devices in fog environments to enhance fault tolerance. The proposed framework implements a novel QoS-aware technique based on the combination of checkpoints and replication (CR) for diagnosing faults and the bee-mutation (BM) algorithm for optimal placement of service. A fog service monitor is established to observe the performance of fog nodes. Both the CR module and BM module access the service monitor to ensure that the proposed hybrid framework is fault-tolerant. Furthermore, the proposed CR-BM-based hybrid framework has been evaluated for its performance by using various performance metrics. In the comparative analysis, it is observed that the proposed hybrid framework outperforms the existing genetic algorithm-based framework.

scholarly journals Practical Byzantine Consensus for Internet-of-Things

2021 ◽  
Author(s):  
Himanshu Goyal ◽  
Sudipta Saha
Keyword(s):  
Fault Tolerance ◽  
Fault Tolerant ◽  
Synchronous Communication ◽  
Smart Devices ◽  
Byzantine Fault Tolerance ◽  
Smart Systems ◽  
Byzantine Fault ◽  
Consensus Strategy ◽  
High Chance ◽  
Decentralised System

Use of IoT/WSN assisted smart-systems in the current age is making our living much more easier. However, components of such systems bear a high chance of getting compromised which may result in a substantial damage or loss. Use of fault tolerant consensus protocols provides a way towards solving this problem. Existing solutions for IoT/WSN systems mostly assume simple non-Byzantine node failures which is not enough to solve the problem. To combat the presence of smart devices with malicious intention, Byzantine fault tolerance support is highly essential in building trustworthy decentralised system. Byzantine fault tolerance has not been addressed much in the context of IoT/WSN because of its inherent requirement of extensive data sharing among the nodes. In this work, we approach to bring a solution to the problem using synchronous communication. In particular, we recast the well-known \textit{Practical Byzantine Fault Tolerant} (PBFT) consensus strategy to an efficient form that is suitable for use in IoT/WSN systems. We demonstrate that our proposed design can work upto 80% faster and consume upto 82% lesser energy compared to a naive implementation of the strategy in publicly available IoT/WSN testbed having 45 nodes.<br>

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