Exploiting Information-centric Networking to Federate Spatial Databases

This paper explores the methodologies, challenges, and expected advantages related to the use of the information-centric network (ICN) technology for federating spatial databases. ICN services allow simplifying the design of federation procedures, improving their performance, and providing so-called data-centric security. In this work, we present an architecture that is able to federate spatial databases and evaluate its performance using a real data set coming from OpenStreetMap within a heterogeneous federation formed by MongoDB and CouchBase spatial database systems

Design and analysis of stream scheduling algorithms in distributed reservation-based multimedia systems

Ph.DDOCTOR OF PHILOSOPH

On distributed mobile edge computing

Mobile Cloud Computing (MCC) has been proposed to offload the workloads of mobile applications from mobile devices to the cloud in order to not only reduce energy consumption of mobile devices but also accelerate the execution of mobile applications. Owing to the long End-to-End (E2E) delay between mobile devices and the cloud, offloading the workloads of many interactive mobile applications to the cloud may not be suitable. That is, these mobile applications require a huge amount of computing resources to process their workloads as well as a low E2E delay between mobile devices and computing resources, which cannot be satisfied by the current MCC technology. In order to reduce the E2E delay, a novel cloudlet network architecture is proposed to bring the computing and storage resources from the remote cloud to the mobile edge. In the cloudlet network, each mobile user is associated with a specific Avatar (i.e., a dedicated Virtual Machine (VM) providing computing and storage resources to its mobile user) in the nearby cloudlet via its associated Base Station (BS). Thus, mobile users can offload their workloads to their Avatars with low E2E delay (i.e., one wireless hop). However, mobile users may roam among BSs in the mobile network, and so the E2E delay between mobile users and their Avatars may become worse if the Avatars remain in their original cloudlets. Thus, Avatar handoff is proposed to migrate an Avatar from one cloudlet into another to reduce the E2E delay between the Avatar and its mobile user. The LatEncy aware Avatar handDoff (LEAD) algorithm is designed to determine the location of each mobile user\u27s Avatar in each time slot in order to minimize the average E2E delay among all the mobile users and their Avatars. The performance of LEAD is demonstrated via extensive simulations. The cloudlet network architecture not only facilitates mobile users in offloading their computational tasks but also empowers Internet of Things (IoT). Popular IoT resources are proposed to be cached in nearby brokers, which are considered as application layer middleware nodes hosted by cloudlets in the cloudlet network, to reduce the energy consumption of servers. In addition, an Energy Aware and latency guaranteed dynamic reSourcE caching (EASE) strategy is proposed to enable each broker to cache suitable popular resources such that the energy consumption from the servers is minimized and the average delay of delivering the contents of the resources to the corresponding clients is guaranteed. The performance of EASE is demonstrated via extensive simulations. The future work comprises two parts. First, caching popular IoT resources in nearby brokers may incur unbalanced traffic loads among brokers, thus increasing the average delay of delivering the contents of the resources. Thus, how to balance the traffic loads among brokers to speed up IoT content delivery process requires further investigation. Second, drone assisted mobile access network architecture will be briefly investigated to accelerate communications between mobile users and their Avatars

Satellite Networks: Architectures, Applications, and Technologies

Since global satellite networks are moving to the forefront in enhancing the national and global information infrastructures due to communication satellites' unique networking characteristics, a workshop was organized to assess the progress made to date and chart the future. This workshop provided the forum to assess the current state-of-the-art, identify key issues, and highlight the emerging trends in the next-generation architectures, data protocol development, communication interoperability, and applications. Presentations on overview, state-of-the-art in research, development, deployment and applications and future trends on satellite networks are assembled

When Channel Surfers Flip to the Web: Copyright Liability for Internet Broadcasting

Digital streaming capabilities have enabled real-time Internet transmission of video signals. The advent of Webcasting will potentially change the way in which programming reaches audiences-increasing diversity in content as well as customer choice. Currently, cable and satellite systems secure retransmission rights to broadcast programming through statutory copyrights, and debate has ensued over whether online retransmitters should benefit from the same. This Article describes the evolution of streaming video over the Internet and examines the economic exploitation of such technology. After offering an overview of the compulsory copyright system, the Article analyzes the applicability of statutory licenses to Internet retransmissions of broadcast video signals. It concludes that compulsory copyrights and attendant regulatory restrictions should extend to real-time secondary transmissions of over-the-air broadcast programming (Internet TV). However, a free market system of negotiation would be more appropriate for Webcasting in a pay-per-view video library model

The Rising Preference to Real-Time Broadcasting Effects upon Traditional Multi-Media Broadcasting Solutions

Originally the Internet was a research-based arena but today the applications available are greatly diversified and extremely advanced. Media broadcasting on a real time basis is that which characterizes many providers business base in service, applications, soft and hardware needs. Today\u27s engineers are driven toward making provisions of new and superior applications to make the Internet stronger and more serviceable. Along with the new dimension of today\u27s Internet come new challenges. Videoconferencing and video broadcasting are mainstream entrant applications. These applications specifically those of videoconferencing and broadcasting place previously unheard of demands on the response-load of the network effecting data in terms of efficiency and effectiveness in data delivery. The new analog type delivery used today has opened the Internet up for new usefulness. This work explores the changes and the new technologies unleashed as well as observing how other advantages in IP networks still need to be realized, making determination of the roadblocks in achieving a competitive advantage in IP networks and evaluate the developments in broadcasting; determining other resources that need to be realized and identifying the chances that traditional broadcasting technology will revolutionize and catch up with IP broadcasting. Finally this work will assess what it would take to achieve the development of broadcasting technologies