Reliability Estimation of Fault-Tolerant Wireless and Mobile Networks

2010 ◽  
Author(s):  
Chandreyee Chowdhury ◽  
Sarmistha Neogy
Keyword(s):  
Mobile Networks ◽  
Fault Tolerant ◽  
Reliability Estimation

scholarly journals Reliability Assessment of a Fault-Tolerant PV Multistring Inverter

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6525
Author(s):  
Hugues Renaudineau ◽  
Pol Paradell-Solà ◽  
Lluís Trilla ◽  
Alber Filba-Martinez ◽  
David Cardoner ◽  
...  
Keyword(s):  
Fault Tolerant ◽  
Cost Effective ◽  
Power Converter ◽  
Reliability Estimation ◽  
Time To Failure ◽  
Pv Systems ◽  
Conventional Structure ◽  
Power Electronics Converter ◽  
Mean Time ◽  
Design Power

In photovoltaic (PV) systems, the reliability of the system components, especially the power converters, is a major concern in obtaining cost effective solutions. In order to guarantee service continuity in the case of failure of elements of the PV converter, in particular, semiconductor switching devices, a solution is to design power converter with fault-tolerance capability. This can be realized by aggregating hardware redundancy on an existing converter, providing the possibility of replacement of faulty elements. This paper evaluates the reliability of a fault-tolerant power electronics converter for PV multistring application. The considered fault-tolerant design includes a single redundant switching leg, which is used in order to reconfigure the structure in case of a switch failure either on DC-AC or DC-DC stages. This paper details the reliability estimation of the considered PV multistring fault-tolerant converter. Furthermore, a comparison with a conventional structure without fault-tolerant capability is provided. The results show that the introduction of a single redundant leg allows for improving the converter mean time to failure by a factor of almost two and it reduces, by half, the power loss due to system-failure shutdowns in PV applications, while only increasing the converter cost by 2–3%.

A Fuzzy-Based Dynamic Load Decision Making Scheme in Cloud Computing

2013 ◽  
Vol 718-720 ◽  
pp. 2191-2196
Author(s):  
Yi Chun Chang ◽  
Yao Tien Wang
Keyword(s):  
Cloud Computing ◽  
Mobile Networks ◽  
Service Provision ◽  
Message Passing ◽  
Fault Tolerant ◽  
Dynamic Resource Allocation ◽  
Unstable System ◽  
Service Type ◽  
Dynamic Resource ◽  
Resource Allocation Scheme

In this paper, a fuzzy-based dynamic resource allocation scheme for load balancing in cloud computing (FDLB) is presented to growth of the service type and user number in the mobile networks of the higher performance is required in service provision and throughput. Besides, the estimation of workload is difficult and time consuming, and the result causes an unstable system and unnecessary message passing overhead. The structure of the FDLB is composed of the design the load distributed agent (LDA). It is observed that the FDLB exhibits better adaptability, robustness, and fault-tolerant capability, thus yielding better performances compared to other existing algorithms.

scholarly journals Fault Tolerant Scheduling Methods in Cloud Based 5G Networks

2019 ◽  
Vol 8 (10) ◽  
pp. 619-623
Keyword(s):  
Mobile Networks ◽  
High Performance ◽  
High Efficiency ◽  
Service Providers ◽  
Fault Tolerant ◽  
Main Idea ◽  
Scheduling Algorithms ◽  
Cloud Service ◽  
Research Field ◽  
System Failure

Cloud computing is one of the emerging technology in the field of business and also in the research field. High performance and high efficiency for 5G systems can be provided by the cloud radio access networks(C-RAN). There is also requirement of higher efficiency and also for the low latency for the 5G mobile networks. Sometimes there is probability of entire system failure due to the fault in some part of the hardware or the software. Hence by developing some of the fault tolerant methods these kind of issues can be avoided. Fault tolerance methods can also increase the use of cloud based services. The main idea of fault tolerant scheduling methods is to involve redundancy , so that all the tasks can be performed even when the system fails. But this may cause overhead for the cloud service providers. Hence various scheduling algorithms can be used to overcome this problem. In this paper, the different kinds of fault tolerant scheduling algorithms are discussed. Hence the suitable methods can be used according to the requirement of the user. This should also lead to increase in the efficiency, performance of the tasks and avoid the system failure in case of minute faults in the system.

scholarly journals A Pointer Forwarding Scheme for Fault-tolerant Location Management in Mobile Networks

2004 ◽  
Vol 11C (3) ◽  
pp. 387-394
Author(s):  
Kyung-Sook Lee ◽  
Sook-Jeong Ha ◽  
Sung-Kwang Chun ◽  
Ihn-Han Bae
Keyword(s):  
Mobile Networks ◽  
Fault Tolerant ◽  
Location Management
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