Дослідження механізмів керування трафіком у мережах NGN на основі MPLS

Актуальність полягає у тому однією з головних проблем, що виникають при переході від спеціалізованих мереж до єдиної мультисервісної комунікаційної мережі, є забезпечення необхідної якості обслуговування різних сервісів і додатків. Розробка механізмів забезпечення якості послуг у мультисервісних мережах є однією з центральних проблем. У зв'язку з цим все більше уваги приділяється засобам керування трафіком, реалізованим на мережевому рівні мереж наступного покоління. Вище названими причинами обумовлена актуальність теми дослідження механізмів керування трафіком у мережах NGN на основі MPLS. Метою роботи є пошук шляхів підвищення продуктивності мереж NGN за допомогою більш ефективного розподілу ресурсів пропускної спроможності за допомогою багатопротокольної комутації за мітками. Вирішення задачі управління трафіком в мережі NGN. Об’єктом дослідження є механізми управління трафіком мереж наступного покоління з ядром на основі IP/MPLS . Предметом дослідження є комплекс питань пов’язаних з забезпечення необхідної якості обслуговування за рахунок оптимального використання мережевих ресурсів мережі наступного покоління. В дані роботі розглядаються особливості механізмів управління трафіком сучасних мультисервісних мережах побудованих на основі технології багатопротокольної комутації за мітками. В роботі проведено моделювання мультисервісної мережі та вирішення задачі управління для цієї мережі.The relevance of the field is that one of the main problems arises from the transition from specialized fences to a single multiservice community network is to ensure the maintenance of the necessary maintenance services. The purpose of the work is to find ways to increase the productivity of NGN networks by means of more efficient allocation of bandwidth resources under various topology. Solving the problem of traffic management in the NGN network. The development of mechanisms to ensure the quality of services in multiservice networks is one of the central problems. In this regard, more and more attention is paid to traffic management tools implemented at the network level of next generation networks. The above reasons are due to the relevance of the research topic of traffic management mechanisms in NGN networks based on MPLS. The aim of the work is to find ways to increase the productivity of NGN networks by more efficient allocation of bandwidth resources across different topologies. Solving the problem of traffic management in the NGN network. The object of the study is the traffic engineering mechanisms of a next generation networks with a core based on IP / MPLS. The subject of the study is a set of issues related to ensuring the required quality of service through the optimal use of network resources of the next generation network. These work examines the peculiarities of traffic management mechanisms of modern multiservice networks built on the basis of multi-protocol switching technology by tags. The simulation of the multiservice network and solving the management problem for this network are carried out

IPTV deployment - Trigger for advanced network services!

C

Quality of service assurance for the next generation Internet

The provisioning for multimedia applications has been of increasing interest among researchers and Internet Service Providers. Through the migration from resource-based to service-driven networks, it has become evident that the Internet model should be enhanced to provide support for a variety of differentiated services that match applications and customer requirements, and not stay limited under the flat best-effort service that is currently provided. In this paper, we describe and critically appraise the major achievements of the efforts to introduce Quality of Service (QoS) assurance and provisioning within the Internet model. We then propose a research path for the creation of a network services management architecture, through which we can move towards a QoS-enabled network environment, offering support for a variety of different services, based on traffic characteristics and user expectations

Design and Implementation of a Measurement-Based Policy-Driven Resource Management Framework For Converged Networks

This paper presents the design and implementation of a measurement-based QoS and resource management framework, CNQF (Converged Networks QoS Management Framework). CNQF is designed to provide unified, scalable QoS control and resource management through the use of a policy-based network management paradigm. It achieves this via distributed functional entities that are deployed to co-ordinate the resources of the transport network through centralized policy-driven decisions supported by measurement-based control architecture. We present the CNQF architecture, implementation of the prototype and validation of various inbuilt QoS control mechanisms using real traffic flows on a Linux-based experimental test bed.Comment: in Ictact Journal On Communication Technology: Special Issue On Next Generation Wireless Networks And Applications, June 2011, Volume 2, Issue 2, Issn: 2229-6948(Online

Ethernet - a survey on its fields of application

During the last decades, Ethernet progressively became the most widely used local area networking (LAN) technology. Apart from LAN installations, Ethernet became also attractive for many other fields of application, ranging from industry to avionics, telecommunication, and multimedia. The expanded application of this technology is mainly due to its significant assets like reduced cost, backward-compatibility, flexibility, and expandability. However, this new trend raises some problems concerning the services of the protocol and the requirements for each application. Therefore, specific adaptations prove essential to integrate this communication technology in each field of application. Our primary objective is to show how Ethernet has been enhanced to comply with the specific requirements of several application fields, particularly in transport, embedded and multimedia contexts. The paper first describes the common Ethernet LAN technology and highlights its main features. It reviews the most important specific Ethernet versions with respect to each application field’s requirements. Finally, we compare these different fields of application and we particularly focus on the fundamental concepts and the quality of service capabilities of each proposal

Multicast broadcast services support in OFDMA-based WiMAX systems [Advances in mobile multimedia]

Multimedia stream service provided by broadband wireless networks has emerged as an important technology and has attracted much attention. An all-IP network architecture with reliable high-throughput air interface makes orthogonal frequency division multiplexing access (OFDMA)-based mobile worldwide interoperability for microwave access (mobile WiMAX) a viable technology for wireless multimedia services, such as voice over IP (VoIP), mobile TV, and so on. One of the main features in a WiMAX MAC layer is that it can provide'differentiated services among different traffic categories with individual QoS requirements. In this article, we first give an overview of the key aspects of WiMAX and describe multimedia broadcast multicast service (MBMS) architecture of the 3GPP. Then, we propose a multicast and broadcast service (MBS) architecture for WiMAX that is based on MBMS. Moreover, we enhance the MBS architecture for mobile WiMAX to overcome the shortcoming of limited video broadcast performance over the baseline MBS model. We also give examples to demonstrate that the proposed architecture can support better mobility and offer higher power efficiency