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This paper aims at the development of a cloud services provisioning framework by developing a dynamic priority job scheduler cum load-balancer for the cloud. The main motive of this paper is to provide a means of managing the job requests in a flexible and cost-effective way, both for the customer and the cloud service provider. In order to make the cloud scalable and adaptable to the changing needs...
Usage of the Internet has been changed over the past decade. Current tightly-coupled network architecture limits innovative actions. Besides, companies desire to provide better service while keeping their costs low. Software Defined Networking (SDN) is a new approach that provides abstract, programmable and open networking. It is brought up to address these issues. In this study1, we present the design,...
In order to reduce high construction cost and energy consumption of distributed base stations in cellular networks, the centralized radio access Cellular network infrastructure with a Super BS(CSBS) architecture has been proposed in which the centralized processing resource can be flexibly organized. However, there is sill the problem of low processing resource efficiency in protocol processing. In...
SeDAX is a publish/subscribe information-centric networking architecture where publishers send messages to the appropriate message broker over a Delaunay-triangulated overlay network. Resilient data forwarding and data redundancy enable a high level of reliability. Overlay nodes and topics are addressed via geo-coordinates. A topic is stored on primary and secondary nodes, those nodes closest and...
In wireless cellular network, resource constraint has become a critical and important issue. Users always and everywhere expect telecommunication systems with the best quality. They also need visual and multimedia communication. So, an intelligent wireless network that has the ability to adapt to environment in different network traffics is needed. The intelligent network has the capability to decide...
An inter-system adapter design is described which links the web service based DR NEP and WebSimP simulation platforms. The adapter enables the PSS Sincal electrical simulator to share results with the DR NEP which coordinates the data exchange among interdependent simulators. In this paper, we describe an adapter which supports decision makers involved in natural crisis management by calculating constraints...
In the LTE networks, the multicast services can be transmitted by single frequency network (SFN) mode and point-to-multipoint (PTM) mode, and the unicast services are delivered with point-to-point (PTP) mode. To avoid the network congestion in the LTE networks with the multicast and unicast mixed services, an analytic hierarchy process (AHP) in load balancing is proposed to minimize the demanded radio...
FTT-CORBA is a middleware architecture aimed at synchronizing the task activations of a distributed system according to a plan that may be changed in run-time. In this architecture tasks are wrapped as CORBA methods that are activated by a central node, the Orchestrator. FTT-CORBA allows loading and managing distributed applications in run-time by means of an open interface. It also allows monitoring...
The complexity of cloud systems poses new infrastructure and application management challenges. One of the common goals of the research community, practitioners and vendors is to design self-adaptable solutions capable to react to unpredictable workload fluctuations and changing utility principles. This paper analyzes the problem from the perspective of an application service provider that uses a...
In this paper, we develop a microscopic, agent-based simulation tool, called SIGMA-SPECTRUM to study the dynamics of the primary wireless spectrum market. A detailed, synthetic demand model, is used to produce disaggregated spectrum demand profiles that vary spatially and temporally for each individual in the population. We implement a truthful and efficient auction mechanism, proposed by Ausubel,...
To cope with rapidly increasing Internet usage nowadays, providing Internet services using multiple servers has become a necessity. To ensure sufficient service quality and server utilization at the same time, effective methods are needed to spread load among servers properly. Existing load balancing methods often assume servers are homogeneous and consider only one type of resource, such as CPU....
For academic computer architecture research, a large number of publicly available simulators make use of relatively simple abstractions for the microarchitecture of the processor pipeline. For some types of studies, such as those for multi-core cache coherence designs, a simple pipeline model may suffice. For detailed microarchitecture research, such as those that are sensitive to the exact behavior...
Increasing bandwidth demand from mobile Internet applications and the existence of 2G, 3G and soon 4G equipment in operators' networks forces them to implement an efficient resource management over all available radio access technologies. While such a multi-radio management will certainly improve resource utilization and allows reducing local hot spots, it comes at the cost of additional signaling...
This paper focuses on how to design a store buffer (STB) well suited to first-level multibanked data caches. The goal is to forward data from in-flight stores into dependent loads within the latency of a cache bank. Taking into account the store lifetime in the processor pipeline and the data forwarding behavior, we propose a particular two-level STB design in which forwarding is done speculatively...
Federate migration is a fundamental mechanism for large-scale distributed simulations. It provides the means for simulation load-balancing and thus improves the simulation's overall performance. Given its importance for simulations, several federate migration approaches have been proposed in the literature. Some approaches freeze the entire simulation, others use third-party mechanisms to transport...
Building on the extensive research in Virtual Reality (VR), we are proposing a new dynamic prototype for modelling and simulating carbon emissions in a virtual village called VIRVIL. VIRVIL is a simulated settlement for the assessment of the impact of low and zero carbon technologies and measures in the built environment. The prototype will focus on the impact on the community as a whole, as well...
More and more users subscribing to wireless broadband services are seeking to have access to both WLAN and UMTS networks. We study individually optimal user-network association in an integrated WLAN and UMTS hybrid cell. The association problem is formulated within a non-cooperative game framework. In the formulation, mobile arrivals are assumed to follow the Poisson process and each mobile considers...
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