基于蚁群算法的WSON域间路由联合优化

he trend of service diversification and high-bandth of next generation telecommunication application challenges the WDM based transport network in terms of efficiency and service quality. At the same time, the introduction of intelligent control plane in the WDM network (WSON, Wavelength Switched Optical Network) has become a consensus in the industry. While, in WSON based optical network, control plane has many special problems to be faced and resolved, including how to consider the routing constraints and physical layer parameters constraints in RWA (Routing and Wavelength Assignment); futhermore, how to further improve the network survivability draws a lot of attention of the industry. This paper presents a inter-domain routing algorithm for WSON to jointly optimize the working and protecting resources through improving the traditional ant colony algorithm, with the consideration of maximizing the searching of working and protecting route pair; traffic grooming and physical impairment performance is enhanced as well.