Wyniki wyszukiwania - BazTech

1

Tuchola County Broadband Network (TCBN)

Zabłudowski A., Dubalski B., Zabłudowski Ł., Pedersen J. M.

Image Processing & Communications

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2012

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Vol. 17, no. 3

7--20

EN

In the paper the designing project (plan) of Tuchola City broadband IP optical network has been presented. The extended version of network plan constitute technical part of network Feasibility Study, that it is expected to be implemented in Tuchola and be financed from European Regional Development Funds. The network plan presented in the paper contains both topological structure of fiber optic network as well as the active equipment for the network. In the project described in the paper it has been suggested to use Modular Cable System - MCS for passive infrastructure and Metro Ethernet technology for active equipment. The presented solution provides low cost of construction (CAPEX), ease of implementation of the network and low operating cost (OPEX). Moreover the parameters of installed Metro Ethernet switches in the network guarantee the scalability of the network for at least 10 years.

2

A Survey on Chordal Rings, N2R and Other Related Topologies

Pedersen J. M., Zabłudowski A., Gutierrez J., Ledziński D., Dubalski B.

Image Processing & Communications

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2012

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Vol. 17, no. 3

63--70

EN

In this short paper we summarize the main results of 10 years of research on network topologies carried out jointly at Aalborg University (AAU), Aalborg, Denmark, and University of Life Science (UTP), Bydgoszcz, Poland. The starting points are the Chordal Rings, which were mainly studied in UTP, and the N2R which were studied at AAU. From here the universities have collaborated intensely, and studied a number of alternatives and variations of the original topologies, based on methodologies developed both independently and jointly over time. This paper gives an overview of the work done, and provides appropriate references to the work for further details. The paper is presented as a tribute to Professor and Dean Antoni Zabłudowski who passed away during 2012.

3

An analysis of the applicatiblity of "Hot-Potato" routing in wireless sensor networks used in energy consumption monitoring systems

Dubalski B., Kiedrowski P., Pedersen J. M.

Zeszyty Naukowe. Elektrotechnika / Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy

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2010

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z. 15

5-24

EN

The subject of this paper is analysis of possibility of application "Hot-Potato" protocol in the Wireless Sensor Networks (WSN), which can be used to collect, store and process data obtained from the media consumption meters. Authors propose to use this protocol on account of its low energy emission and small memory capacity while ensuring the high reliability. To perform this analysis the elements of graph theory were used.

PL

Przedmiotem niniejszego artykułu jest analiza możliwości zastosowania protokołu "Hot-Potato" w bezprzewodowych sieciach sensorowych (WSN), których zadaniem jest zbieranie, przechowywanie i obróbka danych otrzymywanych z liczników monitorujących zużycie mediów. Autorzy proponują zastosowanie tego protokołu ze względu na niską jego emisyjność i niewielką pojemność zastosowanych pamięci przy równoczesnym zachowaniu odpowiedniej niezawodności. W celu dokonania tej analizy wykorzystano elementy teorii grafów.

4

Making FTTH happen: the Danish experience

Pedersen J. M., Jensen M., Nielsen R., Riaz T., Gutierrez J., Madsen O.

Image Processing & Communications

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2009

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Vol. 14, no 1

7-12

EN

The deployment of Fiber To The Home (FTTH) in Denmark has accelerated over the previous years, and made Denmark one of the countries in Europe with the highest FTTH deployment rate. This development has been largely driven by the consumer-owned utilities and with almost no interference from government institutions and the incumbent operator, which makes the Danish FTTH evolution quite unique. In this paper we analyze the Danish FTTH deployment, and highlight some of the main drivers and challenges. A main conclusion is that FTTH can actually be deployed, even in rural areas. On the other hand the fast development in Denmark would probably not have happened without the special organization of electricity companies, and the traditions of these. In addition to technical challenges, ranging from system integration problems to handling of the physical fibers, it has been a significant challenge to actually attract customers: The development of speed and availability of xDSL solutions has increased the need for "killer" applications which take full advantage of the speeds offered by FTTH. The main contribution of this short paper is the analysis of the Danish FTTH experiences, which is valuable when developing technologies and services for FTTH, or when taking initiatives for supporting FTTH deployment in other countries.

5

Analysis of regular structures third degree based on chordal rings

Bujnowski S., Dubalski B., Pedersen J. M., Zabłudowski A.

Image Processing & Communications

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2009

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Vol. 14, no 1

13-24

EN

This paper presents an analysis of modified chordal rings third degree (CR3m) and modified double ring structure (N2Rm), which can be used as models of real networks. The proposed solutions are novel and different from the ones currently used since they have two chords of different lengths. In the first part of paper, formulas for the basic parameters diameter and average path length were derived using optimal/ideal graphs, and used for indicating transmission properties of the structures. These analytical results were confirmed by comparison to a large number of computations on real graphs. In the second part, these parameters were compared to the parameters of standard topologies, showing that the distances are shorter when having two different chord lengths.