A lot of attention has been devoted to flow routing in networks by the past. Usually, each commodity to be routed is characterized by a single deterministic traffic value. However, many real-life application contexts require to consider stochastic flows. This is the case, for instance, in telecommunication networks. The current paper revisits usual network routing and dimensioning models, in co...

Ž . The ATM Asynchronous Transfer Mode network is regarded as effective for a multimedia telecommunication environment that enables high-speed and broadband communication. This paper reports on the system architecture and Ž . design concept of the FETEX-150 ESP Enhanced Switching Platform which has been designed as an ATM switch in a public broadband network. To track the latest ATM standards a...

The Convergence of various classes of traffic in modern Telecommunication networks has significantly increased the complexity of performance analysis of such networks. Exact solutions being computationally intractable, it is of importance to have analytical approximations that can be used in various key aspects of such networks such as control of traffic and optimization of resources. This pape...

This paper presents a load balancing method to improve network utilization when static routing algorithms are employed. Static routing algorithms can generally be reduced to a path assignment problem with the aim of minimizing a cost function: i.e., maximizing network revenues. Unfortunately the problem, when multiple constraints such as different QoS traffic classes are present, is computation...

In telecommunication networks, a common measure is the maximum congestion (i.e., utilisation) on edge capacity. As traffic demands are often known with a degree of uncertainty, network management techniques must take into account traffic variability. The oblivious performance of a routing is a measure of how congested the network may get, in the worst case, for one of a set of possible traffic ...

Recent advances in telecommunication networks have allowed WDM to emerge as a viable solution to the ever-increasing demands of the Internet. Because these networks carry large amounts of traffic, alternate routing methods are designed in order to allow traffic to be properly re-routed from source to destination in the event of certain events, such as link blocking or failure. In this paper, we...

The new telecommunication networks scenario is characterised by a very rapid increase of the volume of traffic, and also very variable and unpredictable traffic demands. In this context, all-optical packet switching is emerging as the most promising technology for covering such new requirements. In this paper, we deal with the performance analysis of an optical packet switch with a feedback del...

Celland packet-oriented broadband telecommunication networks such as Asynchronous Transfer Mode (ATM) differ substantially from weIl known telephony networks. The data rates in the synchronous digital hierarchy (SDH) are much higher than in the plesiochronous hierarchy (PDH), and with the rise of new applications and access technologies the traffic profiles have changed. Furthermore, the intell...

We present algorithms for the drawing of survivable telecommunication networks. The visualization of telecommunication networks is a very important problem. For some specific rings in a network, we may have a high traffic. The network designers may decide to add more equipment to the nodes (sites) of these rings in order to increase the performance of the network. Therefore, one of the most imp...