An Efficient Transport Protocol for delivery of Multimedia An Efficient Transport Protocol for delivery of Multimedia Content in Wireless Grids

A grid computing system is designed for solving complicated scientific and commercial problems effectively,whereas mobile computing is a traditional distributed system having computing capability with mobility and adopting wireless communications. Media and Entertainment fields can take advantage from both paradigms by applying its usage in gaming applications and multimedia data management. Multimedia data has to be stored and retrieved in an efficient and effective manner to put it in use. In this paper, we proposed an application layer protocol for delivery of multimedia data in wireless girds i.e. multimedia grid protocol (MMGP). To make streaming efficient a new video compression algorithm called dWave is designed and embedded in the proposed protocol. This protocol will provide faster, reliable access and render an imperceptible QoS in delivering multimedia in wireless grid environment and tackles the challenging issues such as i) intermittent connectivity, ii) device heterogeneity, iii) weak security and iv) device mobility.Comment: 20 pages, 15 figures, Peer Reviewed Journa

Feedback credibility issues in trust management systems

The following topics are dealt with: soft computing in intelligent multimedia; grid and pervasive computing security; interactive multimedia &amp; intelligent services in mobile and ubiquitous computing; data management in ubiquitous computing; smart living space; software effectiveness and efficiency.<br /

Exploring a Quality of Service (QoS) Mechanism to Enhance Multimedia Database Query Processing in Wireless Mobile Environments.

Among the challenges of multimedia computing and mobile computing, a mechanism for data retrieval in multimedia databases under wireless mobile environments seems to be the most difficult issue. The problem is that sizes of images in a multimedia DBMS queried by mobile clients through wireless networks are different and unpredictable. Current Quality of Service (QoS) framework has no answer for it because all the QoS principles are based on users’ pre-requirements. However, the issue is that in multimedia applications, it is difficult to know the size of targeted retrieval object. There should be new mechanism of QoS to participate in query processing and provide an efficient theme around which mobile multimedia database applications can b practicably realized. In this thesis we focus on extending QoS management in wireless mobile environments to specify a range of acceptable QoS for multimedia query processing rather than trying either to guarantee specific values or to stop the querying. Through the investigation of current research approaches, we conclude that the statistical or empirical resource utilizations in query processing are the dominant methods to solve the problems. All proposals choose stopping query if the required QoS conditions can not meet the related statistical or empirical resources utilizations. To address QoS in mobile multimedia DBMS issues, we explore an approach to execute query processing based on real time QoS conditions all coming from client, network, and server. We propose a QoS-based matrix to support query processing of object-relational multimedia databases in the context of wireless mobile environments. The proposed QoS-based Querying Processing Precision Matrix (QQPPM) is based on (1) real-time QoS conditions in wireless networks; (2) multimedia database’s object properties; and (3) Mobile client-site data processing capability. We study related technologies as the foundations to support multimedia query processing in wireless mobile environments. Moreover, we conduct OPNET simulations, and the results indicate that our assumption is reasonable and practicable

MIS 830 Problems in Management Information Systems

Course syllabus for MIS 830A Problems in Management Information Systems Course description: Studies the role and application of computers in modern organizations. Discusses appropriate strategies for the effective utilization of computerized environment to improve productivity and efficiency of organizations, especially planning and control functions. Major thrust of the course is focused on the following concepts/assumptions: Information systems can provide competitive advantage to organizations and this recognition is important in corporate strategy formulation/implementation. Development and widespread corporate use of databases, Al/expert systems and client server technology have changed the nature and role of information systems. Recent technological advances (microcomputers, distributed systems, end user computing, local area networks, micro mainframe linkages, fourth generation software, multimedia computing, object-oriented programming, mobile computing, data warehousing, etc.) have made qualitative changes in the way information is acquired, processed, and used by organizations. Topics covered include the following: Conceptual Frameworks of MIS and DSS; Information Systems for Strategic Planning vs Operations Control; Prototyping Methodology; Use of Models in a Computerized Environment; Centralization vs Decentralization; Distributed Information Systems; Assessment of Information Requirements; Expert Systems and AI Applications; Executive Support Systems; Multimedia Computing; Mobile Computing; Client Server Technology; Imaging Systems, Data Warehousing, Feasibility, Design and Implementation of DSS; etc. The course attempts to provide an overview of modern technological and managerial developments in MIS and their impacts on corporate management and organizational structure. Case discussion will be used as the primary instructional format. The instructor will present selected MIS topics in a lecture format in each class session. Each student is required to prepare one or more assigned papers. A seminar approach will be used to examine the contents/significance of the assigned papers

Dynamic edge-caching for mobile users: minimising inter-AS traffic by moving cloud services and VMs

In recent years, Cloud technology has revolutionized the way services are delivered to end-users. The advent of truly mobile computing in the form of smart phones and tablets has also driven the demand for Cloud resources in order to compensate for the inherent lack of local resources on these devices. Furthermore, modern mobile devices are equipped with multiple network interfaces and in combination with the rapid deployment of wireless networks, it is expected that they will always have Internet connectivity and access to Cloud resources. In this paper we will focus on traffic management for interactive multimedia services accessed by a mobile user by means of dynamic migration of a Virtual Machine. Network performance measurements are taken from a network of virtualization-enabled hosts that perform live migrations of a Virtual Machine which hosts multimedia content. The data is used as input to an equation that determines whether a migration would be beneficial in terms of traffic localization based on a user's mobility characteristics and network usage patterns. The contribution of this paper lies in the proposed mechanism of managing traffic for interactive services in the context of mobile cloud computing. This helps alleviate the increased network costs introduced by dynamic migrations driven by Quality of Service parameters and may result in increased network traffic for the benefit of improved QoS

A pricing proposal for a QoS enabled UMTS network

ArticleThird generation networks e.g. the Universal Mobile Telecommunications System (UMTS) provide higher data transfer rates which enables the transport of real-time multimedia traffic e.g. streaming video. The cost of Internet access over mobile networks remains high yet user demand for mobile services is increasing rapidly. In order for mobile computing to become viable, the deployment of charging schemes that would see the cost of communication reflect the utilization of resources on the network is necessary. A dynamic charging scheme is an attractive solution. When prices change, users need to indicate their willingness to continue using the service especially when a price increase is beyond the level they anticipated. In this paper we propose a charging scheme that relies on the congestion at the RNC of the UMTS to calculate pricing coefficients, which are in turn used in determining the charge incurred for using the network. The use of user profiles and network agents in the management of the charging scheme is also explored.Third generation networks e.g. the Universal Mobile Telecommunications System (UMTS) provide higher data transfer rates which enables the transport of real-time multimedia traffic e.g. streaming video. The cost of Internet access over mobile networks remains high yet user demand for mobile services is increasing rapidly. In order for mobile computing to become viable, the deployment of charging schemes that would see the cost of communication reflect the utilization of resources on the network is necessary. A dynamic charging scheme is an attractive solution. When prices change, users need to indicate their willingness to continue using the service especially when a price increase is beyond the level they anticipated. In this paper we propose a charging scheme that relies on the congestion at the RNC of the UMTS to calculate pricing coefficients, which are in turn used in determining the charge incurred for using the network. The use of user profiles and network agents in the management of the charging scheme is also explored

Performance Evaluation of Distributed Mobility Management Protocols: Limitations and Solutions for Future Mobile Networks

Mobile Internet data traffic has experienced an exponential growth over the last few years due to the rise of demanding multimedia content and the increasing number of mobile devices. Seamless mobility support at the IP level is envisioned as a key architectural requirement in order to deal with the ever-increasing demand for data and to efficiently utilize a plethora of different wireless access networks. Current efforts from both industry and academia aim to evolve the mobility management protocols towards a more distributed operation to tackle shortcomings of fully centralized approaches. However, distributed solutions face several challenges that can result in lower performance which might affect real-time and multimedia applications. In this paper, we conduct an analytical and simulated evaluation of the main centralized and proposed Distributed Mobility Management (DMM) solutions. Our results show that, in some scenarios, when users move at high speed and/or when the mobile node is running long-lasting applications, the DMM approaches incur high signaling cost and long handover latency.This work was supported by the Government of Extremadura under Grant no. GR15099 and by the European Regional Development Fund Programme (2014–2020) and the Regional Fund, through Computing and Advanced Technologies Foundation of Extremadura (COMPUTAEX)

The Design of a System Architecture for Mobile Multimedia Computers

This chapter discusses the system architecture of a portable computer, called Mobile Digital Companion, which provides support for handling multimedia applications energy efficiently. Because battery life is limited and battery weight is an important factor for the size and the weight of the Mobile Digital Companion, energy management plays a crucial role in the architecture. As the Companion must remain usable in a variety of environments, it has to be flexible and adaptable to various operating conditions. The Mobile Digital Companion has an unconventional architecture that saves energy by using system decomposition at different levels of the architecture and exploits locality of reference with dedicated, optimised modules. The approach is based on dedicated functionality and the extensive use of energy reduction techniques at all levels of system design. The system has an architecture with a general-purpose processor accompanied by a set of heterogeneous autonomous programmable modules, each providing an energy efficient implementation of dedicated tasks. A reconfigurable internal communication network switch exploits locality of reference and eliminates wasteful data copies

Octopus - an energy-efficient architecture for wireless multimedia systems

Multimedia computing and mobile computing are two trends that will lead to a new application domain in the near future. However, the technological challenges to establishing this paradigm of computing are non-trivial. Personal mobile computing offers a vision of the future with a much richer and more exciting set of architecture research challenges than extrapolations of the current desktop architectures. In particular, these devices will have limited battery resources, will handle diverse data types, and will operate in environments that are insecure, dynamic and which vary significantly in time and location. The approach we made to achieve such a system is to use autonomous, adaptable modules, interconnected by a switch rather than by a bus, and to offload as much as work as possible from the CPU to programmable modules that is placed in the data streams. A reconfigurable internal communication network switch called Octopus exploits locality of reference and eliminates wasteful data copies