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In this paper, we propose a dynamic route construction method based on measured characteristics of radio propagation in a real environment. Our method first measures characteristics of radio propagation for each link, and determines a communication route from every node to the sink node and its transmission power based on the measured characteristics. While operating the system, our method dynamically...
This paper presents a new routing protocol named RACE (network conditions Aware geographical forwarding protocol for real-time applications in mobile wireless sensor networks) that was developed to address the challenges found while using WSNs in a running competition scenario: QoS, mobility, and high workload. RACE aims to provide QoS requirements to the application layer by giving priority to real-time...
Data Grids provide services and infrastructure for distributed data-intensive applications accessing massive geographically distributed datasets. An important technique to speed access in Data Grids is replication, which provides nearby data access. Much of the work on the replica placement problem has focused on average system performance and ignored quality assurance issues. In a data grid environment,...
This paper discusses some of the research done in the area of communities of Web services. A community allows Web services offering similar functionalities to be grouped together. One challenge that arises as a result of this grouping concerns the assessment of the level of service of the community. We refer to this level of service as Quality of Community (QoC). The QoC is important as it permits...
In this paper we present a network resource management framework, based on an home network model, that ensures the QoS (Quality of Service) of distributed multimedia applications. The latter are deployed, on the user demand, on the heterogeneous devices and the heterogeneous communication links of the home network. The resource management framework contains dedicated components to estimate the required...
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