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Wyświetlanie 1-6 z 6
Tytuł:
Fair resource allocation schemes and network dimensioning problems
Autorzy:
Ogryczak, W.
Śliwiński, T.
Wierzbicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/307704.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
sieci telekomunikacyjne
telecommunication networks
network dimensioning
resource allocation
fairness
Opis:
Resource allocation problems are concerned with the allocation of limited resources among competing activities so as to achieve the best overall performances of the system but providing fair treatment of all the competitors. Telecommunication networks are facing the increasing demand for Internet services. Therefore, a problem of network dimensioning with elastic traffic arises which requires to allocate bandwidth to maximize service flows with fair treatment of all the services. In such applications, the so-called max-min fairness (MMF) solution concept is widely used to formulate the resource allocation scheme. This guarantees the fairness but may lead to significant losses in the overall throughput of the network. In this paper we show how multiple criteria optimization concepts can be used to generate various fair resource allocation schemes. The solution concepts are tested on the network dimensioning problem and their abilities to model various preferences are demonstrated.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 3; 34-42
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Network Dimensioning with Maximum Revenue Efficiency for the Fairness Index
Autorzy:
Zalewski, G.
Ogryczak, W.
Powiązania:
https://bibliotekanauki.pl/articles/307749.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
allocation problem
decision problems
dimensioning networks
fair-optimization
linear programming
maximization
multi-criteria
Opis:
Network dimensioning is a specific kind of the resource allocation problem. One of the tasks in the network optimization is to maximize the total flow on given pairs of nodes (so-called demands or paths between source and target). The task can be more complicated when different revenue/profit gained from each unit of traffic stream allocated on each demand is taken into account. When the total revenue is maximized the problem of starvation of less attractive paths can appear. Therefore, it is important to include some fairness criteria to preserve connections between all the demands on a given degree of quality, also for the least attractive paths. In this paper, a new bicriteria ratio optimization method which takes into account both, the revenue and the fairness is proposed. Mathematical model is built in a form of linear programming. The solutions are analyzed with some statistical measures to evaluate their quality, with respect to fairness and efficiency. In particular, the Gini’s coefficient is used for this purpose.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 4; 15-21
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Dimensioning and Routing in the IP QoS System
Autorzy:
Góralski, W.
Pyda, P.
Dalecki, T.
Mongay Batalla, J.
Śliwiński, J.
Latoszek, W.
Gut, H.
Powiązania:
https://bibliotekanauki.pl/articles/307866.pdf
Data publikacji:
2011
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
IP QoS System
resource dimensioning
routing
Opis:
This article presents dimensioning and routing solutions in IP QoS System designed during the implementation of the PBZ project: "Next Generation Services and Networks - technical, application and market aspects: Traffic management - IP QoS System". The paper presents the functional architecture together to the description of the functions and methods implemented in the system.
Źródło:
Journal of Telecommunications and Information Technology; 2011, 3; 21-28
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Path Diversity Protection in Two-Layer Networks
Autorzy:
Dzida, M.
Śliwiński, T.
Zagożdżon, M.
Ogryczak, W.
Pióro, M.
Powiązania:
https://bibliotekanauki.pl/articles/308914.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
link dimensioning
path diversity
resilient routing
two-layer network optimization
Opis:
The paper addresses an optimization problem related to dimensioning links in a resilient two-layer network. A particular version of the problem which assumes that links of the upper layer are supported by unique paths in the lower layer is considered. Two mixed-integer programming formulations of this problem are presented and discussed. Direct resolving of these formulations requirespre-selection of "good" candidate paths in the upper layer of the network. Thus, the paper presents an alternative approach which is based on decomposing the resolution process into two phases, resolved iteratively. The first phase subproblem is related to designing lower layer path flows that provide the capacities for the logical links of the upper layer. The second phase is related to designing the flow patterns in the upper layer with protection assured through diversity of paths. In this phase we take into account the failures of the logical links that result from the failures of the lower layer links (so called shared risk link groups).
Źródło:
Journal of Telecommunications and Information Technology; 2009, 3; 14-19
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the system with vacations under poissonian input stream and constant service times
Autorzy:
Sosnowski, M.
Burakowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/309584.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
approximation analysis
buffer dimensioning
mean waiting times
system with vacations
Opis:
In the paper approximate formulas for the mean waiting times and the buffer dimensioning in the system with vacations fed by the stream of Poissonian type with constant service times is shown. Furthermore, in the considered system the time intervals of the availability/notavailability of the service are constant and are run alternately according to the assumed cycle. More precisely, presented approach begin with derivation of the mean waiting times and, on the basis of this, the required buffer size for guaranteeing the losses less than predefined value is estimated. The accuracy of the presented analytical formulas is on a satisfactory level. The formulas were used for the System IIP dimensioning.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 3; 3-8
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fair and efficient network dimensioning with the reference point methodology
Autorzy:
Goryczak, W.
Wierzbicki, A.
Milewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/308918.pdf
Data publikacji:
2006
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
multiple criteria optimization
efficiency
fairness
equity
reference point method
teleconsultations
network design
elastic traffic
Opis:
The dimensioning of telecommunication networks that carry elastic traffic requires the fulfillment of two conflicting goals: maximizing the total network throughput and providing fairness to all flows. Fairness in telecommunication network design is usually provided using the so-called max-min fairness (MMF) approach. However, this approach maximizes the performance of the worst (most expensive) flows which may cause a large worsening of the overall throughput of the network. In this paper we show how the concepts of multiple criteria equitable optimization can be effectively used to generate various fair and efficient allocation schemes. We introduce a multiple criteria model equivalent to equitable optimization and we develop a corresponding reference point procedure for fair and efficient network dimensioning for elastic flows. The procedure is tested on a sample network dimensioning problem for elastic traffic and its abilities to model various preferences are demonstrated.
Źródło:
Journal of Telecommunications and Information Technology; 2006, 4; 21-30
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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