MDP-based lightpath establishment for service differentiation in all-optical WDM networks with wavelength conversion capability |
| |
Authors: | Takuji Tachibana Izumi Koyanagi |
| |
Affiliation: | (1) Department of Computer Science and Engineering, Indian Institute of Technology, 781039 Guwahati, India;(2) Department of Computer Science and Engineering, Indian Institute of Technology, 600036 Chennai, India |
| |
Abstract: | In this paper, we propose a service differentiation method for lightpath establishment in all-optical WDM networks. The proposed
method derives the optimal lightpath establishment policy for each serve class based on a Markov Decision Process (MDP). The
optimal policy considered here is to provide service differentiation for lightpath establishment and to utilize wavelengths
effectively. Here, we focus on two cases for wavelength conversion capability; full-range wavelength conversion and limited-range
wavelength conversion. For full-range wavelength conversion, the number of lightpaths for each class is considered as a state
of MDP. On the other hand, for limited-range wavelength conversion, the service class of lightpath that has been established
with each output wavelength is considered as the state. Based on these states, we derive the optimal policy for lightpath
establishment. In both cases, we evaluate the performance of the proposed method with simulation. In numerical examples, we
show that our proposed method can provide service differentiation and use wavelengths effectively regardless of wavelength
conversion capability. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|