The Internet Protocol Network Design Problem with Reliability and Routing Constraints (IPRR) can be shortly stated as follows. A telecommunication network is given in terms of a set of nodes and a set of traffic demands; we want to define the minimum cost capacity reservation such that all the traffic is routed even under fault scenarios. Capacity is provided by reserving some already installed...

Abstract Telecommunication network owners and operators have for half a century been well aware of the potential loss of revenue if a major trunk is damaged, thus dependability at high cost has been implemented. A simple, effective and common dependability scheme is 1:1 protection with 100% capacity redundancy in the network. A growing number of applications in need of dependable connections wi...

Network throughput and energy conservation are two conflicting important performance metrics for wireless sensor networks. Since these two objectives are in conflict with each other, it is difficult to achieve them simultaneously. In this paper, a joint duty cycle scheduling and energy aware routing approach is proposed based on evolutionary game theory which is called DREG. Making a trade-off ...

This paper reviews some basic concepts about network management and introduces a new approach for the management of telecommunication networks, using SIS (System for the Integration of Supervision). The approach is based on the gradual integration of the existing proprietary management systems, while simultaneously moving towards the new ITU-T network management standards, namely TMN.

In this paper we address the problem of load balancing optimization of telecommunication networks based on multiple spanning tree routing. We focus on two objectives – minimization of the maximum link load and minimization of the network utilization imposing a worst case load value – and we propose two sets of mixed integer programming models defining the optimization problems (where one set is...

In this paper we study the problem of supporting quality-of service (QoS) parameters during a handover event, from the view of the wired network. The future network concepts of the most significant telecommunication companies have three common aspects: a unified IP/ATM backbone, many different kinds of access technologies and QoS support. We propose a new handover supporting routing method, whi...

This paper describes new experiments for the classification of recorded operator assistance telephone utterances. The experimental work focused on three techniques: support vector machines (SVM), simple recurrent networks (SRN) and finite-state transducers (FST) using a large, unique telecommunication corpus of spontaneous spoken language. A comparison is made of the performance of these classi...

In this paper, we consider the network loading problem under demand uncertainties with static routing, i.e, a single routing scheme based on the fraction of the demands has to be determined. We generalize the class of metric inequalities to the Γ-robust setting and show that they yield a formulation in the capacity space. We describe a polynomial time exact algorithm to separate violated robust...

As the number and complexity of space missions increases, space communications enter a new era, where internetworking gradually replaces or assists traditional telecommunication protocols. The Delay Tolerant Network (DTN) architecture has recently emerged as a communication system for challenged networks, originally designed for the Interplanetary Internet. In the context of our project with ES...