HLP (hub location problem) tries to find locations of hub facilities and assignment of nodes to extended facilities. Hubs are facilities to collect, arrange, and distribute commodities in telecommunication networks, cargo delivery systems, etc. Hubs are very crucial and their inaccessibility impresses on network whole levels. In this paper, first, total reliability of the network is defined bas...

In this paper, we defined the dynamic model to treat the problem of evaluation of reliability measures of a telecommunication network. We used two approaches, the first is based on the factoring method when the second is based on discrete events simulation techniques. We give some numerical results on the telecommunication network of Bejaia town.

This paper presents a reliability analysis of Local Exchange Carrier telecommunication switches in the United States, based upon empirical data. Telecommunication switch outage statistics are analyzed for a multiyear period, allowing examination into switch failure frequency, causes, and trends. Failure categories are created by reported outage cause codes, including human error, design error, ...

Telecommunication networks, oil platforms, chemical plants and airplanes consist of a great number of subsystems and components that are all subject to failure. Reliability theory studies the failure behavior of such systems in relation to the failure behavior of their components, which is often easier to analyze. However, even for the most basic reliability models, the overall reliability of t...

Networks reliability analysis consists of determining the probability of correct operations of a system. Generally, the network is modeled as a connected graph and formally approached as a stochastic coherent binary system (SCBS). It represents the functioning of a system such as telecommunication and transportation networks, or simply hardware/software devices. Real networks model could be ver...

T paper presents a biobjective genetic algorithm (GA) to design reliable two-node connected telecommunication networks. Because the exact calculation of the reliability of a network is NP-hard, network designers have been reluctant to use network reliability as a design criterion; however, it is clearly an important aspect. Herein, three methods of reliability assessment are developed: an exact...

In this work a discrete and a dynamic model for evaluating the reliability of telecommunication networks, are defined, in the case where the set of terminals K is arbitrary. Three methods are presented. The first one is exact type called generalized method of Ahmad, while the two others are approximate and simulation-based type. The three methods are compared by an application to the Bejaia di...

Telecommunication networks of known reliability are frequently upgraded as traffic patterns change. In this paper we will present theorems and an algorithm which could be used to solve the problem of adding a single link of known failure probability to a network such that the marginal increase in 2-terminal reliability is maximized. The theorems presented will subsequently be used to derive upp...