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A scheme of resource allocation and stability for peer-to-peer file-sharing networks

100%

Li S., Sun W., E C.-G., Shi L.

International Journal of Applied Mathematics and Computer Science

2016

tom 26

nr 3

707-719

Peer-to-peer (P2P) networks offer a cost-effective and easily deployable framework for sharing content. However, P2P file-sharing applications face a fundamental problem of unfairness. Pricing is regarded as an effective way to provide incentives to peers to cooperate. In this paper we propose a pricing scheme to achieve reasonable resource allocation in P2P file-sharing networks, and give an interpretation for the utility maximization problem and its sub-problems from an economic point of view. We also deduce the exact expression of optimal resource allocation for each peer, and confirm it with both simulation and optimization software. In order to realize the optimum in a decentralized architecture, we present a novel price-based algorithm and discuss its stability based on Lyapunov stability theory. Simulation results confirm that the proposed algorithm can attain an optimum within reasonable convergence times.

Simultaneous routing and flow rate optimization in energy-aware computer networks

86%

Jaskóła P., Arabas P., Karbowski A.

International Journal of Applied Mathematics and Computer Science

2016

tom 26

nr 1

231-243

The issue of energy-aware traffic engineering has become prominent in telecommunications industry in the last years. This paper presents a two-criteria network optimization problem, in which routing and bandwidth allocation are determined jointly, so as to minimize the amount of energy consumed by a telecommunication infrastructure and to satisfy given demands represented by a traffic matrix. A scalarization of the criteria is proposed and the choice of model parameters is discussed in detail. The model of power dissipation as a function of carried traffic in a typical software router is introduced. Then the problem is expressed in a form suitable for the mixed integer quadratic programming (MIQP) solver. The paper is concluded with a set of small, illustrative computational examples. Computed solutions are implemented in a testbed to validate the accuracy of energy consumption models and the correctness of the proposed traffic engineering algorithm.

Ograniczanie wyników

2 International Journal of Applied Mathematics and Computer Science

1 Arabas P.

1 E C.-G.

1 Jaskóła P.

1 Karbowski A.

1 Li S.

1 Shi L.

1 Sun W.

2 2016

Wyniki wyszukiwania

A scheme of resource allocation and stability for peer-to-peer file-sharing networks

Simultaneous routing and flow rate optimization in energy-aware computer networks