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In this paper, we introduce an IP Multimedia Subsystem (IMS) based testbed which provides a platform for service innovations. This open-source based testbed is built on the principle of Service Oriented Architecture (SOA), whereby system functionalities such as bandwidth management and video streaming are packaged as interoperable services, so that service providers can combine and reuse them through...
The emergence and success of IP networks make the development of new services like voice, multimedia or web services possible. One of the major problem of these type of application is that IP networks is not designed to provide Quality of Service (QoS) in an end to end architecture. Thus the performance evaluation of these applications is important to guarantee a high level of QoS. We focus in this...
This paper proposes a network traffic simulation model for BACnet Web service (BACnet/WS) object access of building facility monitoring systems to evaluate the communication performance. The simulation model was verified by experiments using a network traffic emulator. In our simulation study, access times of BACnet/WS for 1000 objects are approximately 5 to 20 times longer than those of BACnet/IP...
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