The asynchronous Transfer Mode (ATM) is the widely used packet switching and connection oriented technology that meets diverse services and performance requirements of real time applications using the broadcast . An ATM network is suitable for multimedia services with different traffic flow characteristics and quality of services (QoS ) requirements. In order to meet the required QoS of each tr...

Multi-class network is becoming a more attractive solution to provide Quality-of-Service guarantee, as more quality-demanding applications are emerging. This research considers networks that provide connection-oriented services, as in ATM and MPLS technologies, for example. A common scheme for Dynamic Bandwidth Allocation (DBA) in connection-oriented communications is to dynamically segregate b...

Due to the connection-oriented nature of the asynchronous transfer mode (ATM), one of the challenges in mobile wireless ATM (WATM) systems is the management of terminal handovers. When ATM connections are reestablished to follow terminals moving between areas covered by distinct base stations, seamless handover protocols are necessary to guarantee that ATM cells are delivered to terminals in th...

ATM supports multiple quality of service classes for different application requirements. A Quality of Service is associated with a virtual path connection. Dynamic reconfiguration can generate an optimal virtual path connection network and maintains sufficient capacity to carry the established calls in progress. We developed a tool to present information specific to the changes of virtual path ...

the aim of this study is to investigate underground water quality parameters in gorganrud river basin and their connection with aboveground conditions using gis and artificial neural networks. in order to prepare a land use map of the area, liss iii image of irs satellite of the year 2008 was used in a maximum likelihood classification. the results revealed that there was a significant correlat...

For rural ISPs and organizations, purchasing high-bandwidth, high-quality Internet connections is expensive, if such connections are even available. We propose MultiWAN, a system for loadbalancing at packet granularity across a number of low-bandwidth, low-quality wide area network links. Doing so allows us to create an aggregated connection with performance properties similar to that of a sing...

We derive an analytical end-to-end video quality prediction and control model for video streaming over IP network. This model maps the quality of service (QoS) parameters defined at the connection level to actual video presentation quality at the receiver end. Specifically, we provide an analysis on the effects of packet loss on the decoded video quality and relate the packet loss ratio, one of...

Professional paper This paper presents a research on the influence of packet loss on quality of Internet speech connection. A novel simulation method is proposed to determine time distribution of the loss impairment factor, which is one of the parameters necessary to determine connection quality according to E-model. Several examples illustrate the use of method for the analysis of links with r...