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Mobile QoS

About: Mobile QoS is a(n) research topic. Over the lifetime, 7546 publication(s) have been published within this topic receiving 124645 citation(s).

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Papers
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Journal ArticleDOI: 10.2307/1251263
Abstract: Delivering consistently good service quality is difficult but profitable for service organizations. Understanding why it is so difficult and how it might be facilitated is the purpose of the articl...

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1,540 Citations


Open access
01 Jan 2002-
Abstract: Workflow management systems (WfMSs) have been used to support various types of business processes for more than a decade now. In workflows for e-commerce and Web service applications, suppliers and customers define a binding agreement or contract between the two parties, specifying Quality of Service (QoS) items such as products or services to be delivered, deadlines, quality of products, and cost of services. The management of QoS metrics directly impacts the success of organizations participating in e-commerce. Therefore, when services or products are created or managed using workflows, the underlying workflow system must accept the specifications and be able to estimate, monitor, and control the QoS rendered to customers. In this paper, we present a predictive QoS model that makes it possible to compute the quality of service for workflows automatically based on atomic task QoS attributes. To this end, we present a model that specifies QoS and describe an algorithm and a simulation system in order to compute, analyze and monitor workflow QoS metrics.

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Topics: Mobile QoS (66%), Workflow management system (61%), Workflow engine (59%) ...read more

976 Citations


Proceedings ArticleDOI: 10.1145/1013367.1013379
Yutu Liu1, Anne H. H. Ngu1, Liang Z. Zeng2Institutions (2)
19 May 2004-
Abstract: The emerging Service-Oriented Computing (SOC) paradigm promises to enable businesses and organizations to collaborate in an unprecedented way by means of standard web services. To support rapid and dynamic composition of services in this paradigm, web services that meet requesters' functional requirements must be able to be located and bounded dynamically from a large and constantly changing number of service providers based on their Quality of Service (QoS). In order to enable quality-driven web service selection, we need an open, fair, dynamic and secure framework to evaluate the QoS of a vast number of web services. The fair computation and enforcing of QoS of web services should have minimal overhead but yet able to achieve sufficient trust by both service requesters and providers. In this paper, we presented our open, fair and dynamic QoS computation model for web services selection through implementation of and experimentation with a QoS registry in a hypothetical phone service provisioning market place application.

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Topics: Mobile QoS (69%), Web service (66%), WS-Policy (66%) ...read more

954 Citations


Journal ArticleDOI: 10.1109/MIC.2002.1067740
Daniel A. Menascé1Institutions (1)
Abstract: Quality of service (QoS) is a combination of several qualities or properties of a service, such as: availability is the percentage of time that a service is operating; security properties include the existence and type of authentication mechanisms the service offers, confidentiality and data integrity of messages exchanged, nonrepudiation of requests or messages, and resilience to denial-of-service attacks; response time is the time a service takes to respond to various types of requests; Response time is a function of load intensity, which can be measured in terms of arrival rates (such as requests per second) or number of concurrent requests. QoS takes into account not only the average response time, but also the percentile of the response time; and throughput is the rate at which a service can process requests. QoS measures can include the maximum throughput or a function that describes how throughput varies with load intensity. The QoS measure is observed by Web services users. These users are not human beings but programs that send requests for services to Web service providers. QoS issues in Web services have to be evaluated from the perspective of the providers of Web services and from the perspective of the users of these services.

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Topics: Mobile QoS (69%), Web service (60%), WS-Policy (59%) ...read more

839 Citations


Open accessJournal ArticleDOI: 10.1016/J.WEBSEM.2004.03.001
Jorge Cardoso1, Amit P. Sheth2, John A. Miller2, Jonathan Arnold2  +1 moreInstitutions (2)
Abstract: Workflow management systems (WfMSs) have been used to support various types of business processes for more than a decade now. In workflows or Web processes for e-commerce and Web service applications, suppliers and customers define a binding agreement or contract between the two parties, specifying Quality of Service (QoS) items such as products or services to be delivered, deadlines, quality of products, and cost of services. The management of QoS metrics directly impacts the success of organizations participating in e-commerce. Therefore, when services or products are created or managed using workflows or Web processes, the underlying workflow engine must accept the specifications and be able to estimate, monitor, and control the QoS rendered to customers. In this paper, we present a predictive QoS model that makes it possible to compute the quality of service for workflows automatically based on atomic task QoS attributes. We also present the implementation of our QoS model for the METEOR workflow system. We describe the components that have been changed or added, and discuss how they interact to enable the management of QoS.

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  • Table 4 – Test Quality and FASTA initial QoS estimates
    Table 4 – Test Quality and FASTA initial QoS estimates
  • Table 1 – Task QoS for an automatic task
    Table 1 – Task QoS for an automatic task
  • Table 2 – Task QoS for a manual task
    Table 2 – Task QoS for a manual task
  • Figure 7 – Dual loop system reduction
    Figure 7 – Dual loop system reduction
  • Figure 4 - Parallel system reduction
    Figure 4 - Parallel system reduction
  • + 18

Topics: Mobile QoS (65%), Workflow management system (61%), Workflow engine (60%) ...read more

798 Citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20211
20205
20194
201823
2017171
2016284

Top Attributes

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Topic's top 5 most impactful authors

Klara Nahrstedt

18 papers, 935 citations

Abdelhakim Hafid

18 papers, 591 citations

Fangchun Yang

15 papers, 311 citations

Sajal K. Das

11 papers, 245 citations

Andrew T. Campbell

11 papers, 1K citations

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