Earticle

초록

영어

Due to the characteristics of wireless mobile networks (e.g., node mobility, request fluctuation, poor quality of service), operators as well as service and content providers must cooperate to satisfy their customers. One of the solutions is the dynamic reconfiguration of service platforms, which is a real-time operation made on an initial configuration to improve the QoS parameters of the platform. Reconfiguration can be done by software means, and it can be material or logical, meaning that it may affect the physical or software components of the platform, the physical links, or also the transmitted information, without deteriorating the SLAs contracts signed between customers and operators. Several works have been already published in this direction but they fail in presenting a global view and a generic solution for the problem. This work is articulated in the form of a synthesis of the various solutions of reconfiguration which take place with coherence on the various levels of intervention. To this purpose, a model of a platform has been first developed; traffic and mobility models have been also injected to predict the movement and the demand pattern of the users. Moreover, several scenarios of reconfiguration were proposed for the change or the migration of software components, for the management network, the information routing, and the adaptation of the data. In a first part, we address the reconfiguration problem as a mono-objective optimization problem subjected to several constraints. We propose a mathematical model to deal with this situation. However, we found that finding rigorous solutions for this problem may have a huge computational cost. Hence, we also propose an alternative method introducing flow deviation and heuristics in the genetic algorithm. In the second part of our work, we deal with the behavioural aspect of the problem. It consists in considering the different metrics simultaneously and to seek a whole solution configuration representing various interesting compromises between the resources networks and the classes of services and users.

목차

Abstract
 1. Introduction
 2. State-of-the-art of self-configuration mechanisms in wireles snetworks
  2.1 Telecom Services: Context, Adaptation and Reconfiguration
  2.2 Modeling reconfigurable systems
  2.3 Optimal routing approaches in NGNs
 3. Modeling the architecture of the radio-based multimedia service platform
  3.1 Modeling service platform
  3.2 Trafic and mobility models
 4. Proposed self-configuration models
  4.1 Material and logicial Reconfiguration
  4.2. Logic Reconfiguration logique by routing optimization: Experiment Techniques
  4.3 Logic Reconfiguration by routing optimisation: Formal Techniques
  4.4. Logic Reconfiguration by Adaptation and Filtring: Comportemental study
 5. Simulation and results
  5.1 User Distribution per area and time crenels
  5.2 Evaluation of empiric technique
  5.3 Evaluation of formal technique
  5.4 Evaluation of hybrid resolution
  5.5 Evaluation of behavioral methods
 6. Conclusions
 References

키워드

저자

• Asma Ben Letaifa [ Ecole Supérieure des Communications de Tunis (SUPCOM) ]
• Sami Tabbane Mediatron [ Ecole Supérieure des Communications de Tunis (SUPCOM) ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Advanced Science and Technology

• 간기

  월간

• pISSN

  2005-4238

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605