Wyniki wyszukiwania - BazTech

1

Traffic type influence on performance of OSPF QoS routing

Czarkowski M., Kaczmarek S., Wolff M.

Journal of Telecommunications and Information Technology

|

2013

|

nr 3

19--28

EN

Feasibility studies with QoS routing proved that the network traffic type has influence on routing performance. In this work influence of self-similar traffic for network with DiffServ architecture and OSPF QoS routing has been verified. Analysis has been done for three traffic classes. Multiplexed On-Off model was used for self-similar traffic generation. Comparison of simulation results was presented using both relative and non-relative measures for three traffic classes. Results were commented and analyzed. The basic conclusion is that performance for streaming and best-effort class for self-similar traffic is higher than performance for the same class with exponential traffic (Poisson). The other important conclusion is relation between performance differences and offered traffic amount.

2

Evaluation of a method for enumerating the most probable packet arrangements

Szcześniak I.

Scientific Issues of Jan Długosz University in Częstochowa. Mathematics

|

2011

|

Vol. 16

147--152

EN

The problem of calculating routing probabilities in packet synchronous networks, such as optically-switched packet networks, involves enumerating packet arrangements. Previously we published a method for enumerating the most probable packet arrangements, and in this article we present its novel graph interpretation and evaluate the method for several stop conditions and for the Poisson and geometric probability distributions of arriving packets.

3

A new heuristic algorithm for multicast connections in packet networks

Zwierzykowski P., Piechowiak M., Żódź A.

Poznan University of Technology Academic Journals. Electrical Engineering

|

2007

|

No 54

213-220

EN

There have been many heuristic algorithms determining multicast connection trees proposed over the past few years. However, the proposed methods are only approximations of the most favourable solutions and thus, a necessity of finding a better and more suitable algorithm is still topical and up-to-date. The present article aims at presenting the attempts of finding a constrain algorithm that would be more effective than those presented in relevant literature so far.

4

Rozwiązania Lucent Technologies dla łączności ruchomej następnych generacji

Zięcina K.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

|

2000

|

nr 5

382-387

PL

Opisano rozwiązania Lucent Technologies dla sieci GPRS i UMTS ze szczególnym uwzględnieniem płynnego ich rozwoju od obecnych wąskopasmowych sieci GSM do szerokopasmowych sieci UMTS.

EN

In this paper Lucent Technologies solutions for GPRS and UMTS networks have been described with a focus on upgrade from existing narrowband GSM networks to broadband UMTS networks.

5

Kierunki rozwoju sieci aktywnych

Calvert K., Bhattacharjee S., Zegura E., Sterbenz J.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

|

1999

|

nr 1

9-15

PL

Sieci aktywne stanowią znaczący krok w rozwoju sieci z komutacją pakietów, od tradycyjnych sieci z prostymi węzłami pakietowymi do systemów umożliwiających dynamiczne sterowanie i modyfikację zasad działania sieci. W artykule wprowadzono model i terminologię niezbędne do dyskusji na temat sieci aktywnych, opisano niektóre potencjalne sposoby stosowania tej terminologii oraz przedstawiono różne aspekty architektury opracowanej w ramach programu sieci aktywnych sponsorowanego przez amerykańską agencję DARPA. Przedstawiono potencjalne zastosowania sieci aktywnych wraz z wyzwaniami, którym należy sprostać aby wprowadzić te sieci do eksploatacji.

EN

Active networks represent a significant step in the evolution of packet-switched networks, from traditional packet-forwarding engines to more general functionality supporting dynamic control and modification on the network behavior. However, the phrase 'active network' means different things to different people.This article introduces a model and nomenclature for talking about active networks, describes some possible approaches in terms of that nomenclature, and presents various aspects of the architecture being developed in the DARPA-funded active networks program. Potential applications of active networks are highlighted, along with some of the challenges that must be overcome to make them a reality.