Improving the Quality of Service in Multiservice Networks by Integrating Technologies IP / MPLS and DWDM

B.M. Strykhalyuk, P.O. Huskov, V.S. Andrushchak, V.Ye Murak, S.M. Redchuk

Lviv Polytechnic National University

Abstract: 
IP traffic is growing and seting new tasks for improving the quality of telecommunications services. To resolve this problem in this paper has been proposed IP over OTN over DWDM network architecture, which peculiarity is OTN level that separates the logical and physical topology in IP / MPLS and DWDM networks with MPLS control plane. In the proposed architecture IP / MPLS routers has been connected to multyservice optical transport platforms. In this paper has been defined three basic classes of traffic that will simplify the process of analysis and incoming flows. The first class is real-time traffic. It can be divided into two types: signaling - its required for access and interoperability transmitted through the signal wavelength - and real-time traffic (broadcast and video). The second class is streaming traffic. He is not very responsive to delays, but is responsive to jitter and loss. The third class is elastic traffic, which bandwidth changes has no effect on quality of service. Elastic traffic belongs to class of traffic that is responsive to losses, inresponsive to delay and noresponsive to jitter. For example, its the e-mail traffic, data transfer, web-based applications. Based on the three-level architecture IP / MPLS over OTN over DWDM, and methods for classification of traffic has been improved pattern edge router that provides a more efficient use of optical resources and adapts to explosive IP traffic. Based on the proposed algorithm incoming traffic aggregation were built simulation model that allows to estimate its effectiveness. The simulation results showed that the efficiency of use network node resources has increased by 25%, which leads to lower workload of hardware resources.
Received: 
Friday, May 15, 2015
Accepted: 
Wednesday, September 16, 2015