tailieunhanh - Báo cáo " Về giải pháp tối ưu hoá tài nguyên và định tuyến trên cơ sở chất lượng dịch vụ đối với mạng IP đa dịch vụ"

Về giải pháp tối ưu hoá tài nguyên và định tuyến trên cơ sở chất lượng dịch vụ đối với mạng IP đa dịch vụ | TẠP CHÍ KHOA HỌC VÀ CÔNG NGHỆ Tập 47 số 1 2009 Tr. 1-10 ON QoS-BASED ROUTING AND RESOURCE OPTIMIZATION IN IP-BASED MULTI-SERVICE NETWORKS LE HUU LAP HOANG MINH ABSTRACT Technology and service convergence is current trend of telecommunication and the guarantee quality of service QoS for each application while retaining the best usage of resources is an important criterion for a such network. This leads to a QoS-based optimization process for routing QoSR and different aspects with respect to the said are briefly mentioned in this paper as follows Basis of QoSR technique ll Bandwith-based QoSR problem 111 A proposed QoSR on MPLS-DiffServ architecture model TV Discussions and conclusions with respect to the proposed model V . 1. INTRODUCTION The QoS-based routing problem has been recently approached from the IP routing technology QoS Architectures and Mechanisms and MPLS 1 3 4 In this paper a model is considered and solutions for traffic routing from the basis of available bandwidth in IP MPLS network are reported. 2. BASIS OF QoS-BASED ROUTING QoSR TECHNIQUE . A brief on requirements of QoSR QoSR is an adaptive dynamic routing technique attaining the following targets Selected routes satisfy QoS requirements of all users. Network resources are optimally shared among them. Traffic load is balanced in the whole network. Routing process gains precision stability flexibility and shortest time for convergence. Routing algorithms are simple feasible and extendable. Routing operation is suited and compatible with existing network. QoSR is sensitive to updated information and traffic bursty. Routes selected are effective only in a short duration due to property of traffic variation. . On mechanism of QoSR Metric methodology 6 - 8 Route selection and packet forwarding in a network using QoSR take place in the following order QoS requirements from user and network resources state are mapped to metrics used as criteria for route selection . Metrics are exchanged and .

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