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Mobile computing research is expanding beyond the traditional approach on voice and data delivery to encompass new classes of rich mobile applications such as location based services, mobile social networks, crowd computing and sensory based applications. These classes of mobile applications have quantitative and qualitative criteria of growing importance like efficiency and performance, scalability, privacy and reliability. The next generation of mobile enterprise systems will monitor and analyze the mobile computing ecosystem and adapt their execution environments and resources accordingly. In this work I focus on orchestrating all components of such a complex system to have an optimal mobile cloud computing enterprise which meets users and providers' concerns.
The past two decades of explosive growth in wireless networking, mobile computing and web technologies has profoundly influenced society at large. Almost anyone with access to a mobile device has access to services on the Internet and has reaped the benefits of instant accessibility to Internet-enabled technologies such as social networks, media streaming applications, location-based services, instant messaging, etc. In this thesis we aim to synergistically exploit mobile and cloud computing to enable services that can enrich the experience and capabilities of mobile users in a pervasive environment. While mobile computing empowers users with anywhere, anytime access to the Internet, cloud computing harnesses the vast storage, computing, and software infrastructure resources of large organizations into a single virtualized infrastructure within reach of the general population. We argue that a tiered approach that synergistically exploits local and public clouds to achieve application QoS and scalability is a well suited architecture for the mobile cloud computing paradigm. In this thesis, we studied the problem of optimal and fair service allocation for a variety of mobile applications (single or group/collaborative mobile applications) in a mobile cloud computing paradigm. Specifically, we concentrate on three main issues: (i). Modeling of the MCC systems and formulation of the MCC service allocation problem, (ii) Service and resource provisioning algorithms, (iii) System performance testing. The first section of this dissertation develops a novel framework to model mobile applications as a location-time workflow (LTW) of tasks; here user mobility pattern are translated and mapped to mobile service usage patterns. We show that an optimal mapping of LTWs to 2-tiered cloud resources considering multiple QoS goals such application delay, device power consumption and user cost/price is an NP-hard problem for both single and group-based applications. Next, we designed a range of heuristics and approximations, in particular based on techniques such as greedy, simulated annealing and genetic algorithms to solve the formulated optimization problems. We considered the optimality of the heuristic approaches (as compared with an optimal solution) using running time and scalability as performance metrics. We also developed a MapReduce-based algorithmic model using Pig Latin to address scalable resource provisioning when the search space for optimization is large. We developed a prototype middleware platform, MAPCloud to orchestrate the components of a 2-tiered mobile cloud computing system. MAPCloud was evaluated by implementing a range of mobile applications that span compute, storage and bandwidth intensive applications. A detailed simulation study using measurements and trace data obtained from application profiling was used to further assess system performance at scale.
This book offers a systematic and practical overview of Quality of Service prediction in cloud and service computing. Intended to thoroughly prepare the reader for research in cloud performance, the book first identifies common problems in QoS prediction and proposes three QoS prediction models to address them. Then it demonstrates the benefits of QoS prediction in two QoS-aware research areas. Lastly, it collects large-scale real-world temporal QoS data and publicly releases the datasets, making it a valuable resource for the research community. The book will appeal to professionals involved in cloud computing and graduate students working on QoS-related problems.
Pervasive computing is an intuitive evolution of computing paradigms driven by the wide adoption of mobile devices and wireless networks. It introduces a novel way to support users in their everyday life based on open and dynamic environments populated with unobtrusive services able to perform user tasks on the fly. Nevertheless, supporting user tasks from a functional point of view is not enough to gain the user's satisfaction. Users instead require that their tasks meet a certain Quality of Service (QoS) level. In the context of pervasive environments, fulfilling user tasks while delivering satisfactory QoS brings about several challenges that are mainly due to the openness, dynamics, and limited underlying resources of these environments. To cope with these challenges, we present a QoS-aware service-oriented middleware for pervasive environments. The main contributions of this middleware are: (1) a semantic end-to-end QoS model that enables shared understanding of QoS in pervasive environments, (2) an efficient QoS-aware service composition approach allowing to build service compositions able to fulfill the user functional and QoS requirements, and (3) a QoS-driven adaptation approach to cope with QoS fluctuations during the execution of service compositions. The proposed contributions are implemented within a middleware platform called QASOM and their efficiency is validated based on experimental results.
As more and more of our data is stored remotely, accessing that data wherever and whenever it is needed is a critical concern. More concerning is managing the databanks and storage space necessary to enable cloud systems. Resource Management of Mobile Cloud Computing Networks and Environments reports on the latest advances in the development of computationally intensive and cloud-based applications. Covering a wide range of problems, solutions, and perspectives, this book is a scholarly resource for specialists and end-users alike making use of the latest cloud technologies.
Cyber Physical Systems: Architectures, Protocols and Applications helps you understand the basic principles and key supporting standards of CPS. It analyzes different CPS applications from the bottom up, extracting the common characters that form a vertical structure. It presents mobile sensing platforms and their applications toward interrelated p
This open access book was prepared as a Final Publication of the COST Action IC1304 “Autonomous Control for a Reliable Internet of Services (ACROSS)”. The book contains 14 chapters and constitutes a show-case of the main outcome of the Action in line with its scientific goals. It will serve as a valuable reference for undergraduate and post-graduate students, educators, faculty members, researchers, engineers, and research strategists working in this field. The explosive growth of the Internet has fundamentally changed the global society. The emergence of concepts like SOA, SaaS, PaaS, IaaS, NaaS, and Cloud Computing in general has catalyzed the migration from the information-oriented Internet into an Internet of Services (IoS). This has opened up virtually unbounded possibilities for the creation of new and innovative services that facilitate business processes and improve the quality of life. However, this also calls for new approaches to ensuring the quality and reliability of these services. The objective of this book is, by applying a systematic approach, to assess the state-of-the-art and consolidate the main research results achieved in this area.