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In this paper we address the problem of creating a remote testbed for distance learning. The area we focused on is the study of the problems involved in managing quality of service in networks for real-time applications, like those to be found in a factory, testing various ways of handling traffic in routers and controlling congestion. The testbed incorporates various operating modes that the user...
OPC-XML defines a standard method for accessing automation data in the industry field. This protocol relies on Web service communications allowing a great compatibility and a software/hardware independent definition. Nevertheless, this underlying protocol does not take into account temporal Quality of Service. Therefore, when a contract is defined between the client and the server, its execution has...
This paper presents an architecture to build distributed embedded real-time systems in the RTLinux-GPL platform. The architecture (built in a layered fashion) has being built around open source projects ranging from Ethernet drivers to a CORBA environment. The paper focuses on those layers that give support for QoS and real-time networking over Ethernet networks. The main ideas are: to accomplish...
For supporting applications with different timing constraints, a PLC (power line communication) system must provide differentiated QoS (quality of service). In this paper a traffic dispatching policy is specified and implemented which guarantees both required periodic data update and short end-to-end delay of aperiodic data request services. This policy is compared with the classic dual-priority one...
Power awareness and quality of service (QoS) integration in wireless systems are two of the main research activities in wireless systems today. As frameworks are developed to handle dynamic reconfiguration, the need for a power optimization methodology to investigate alternative cross-layer configurations is imposed as critical. However, as networks become more complex and energy savings become critical,...
Generally speaking, information usually just gains significance only when it is being processed in the context of own experience and being linked to other information. This article describes the development of a generic model for an IT service catalog which could for instance be adapted and utilized by an IT provider in the field of a service management project. The fundamental idea for developing...
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