基于多载波调制技术的混合光网络波长分配优化机制

Wavelength assignment optimization mechanism of hybrid optical networks based on multi-carrier modulation technology

为减少混合光网络波长转换器用量、波长与链路资源占用量,优化混合光网络的信息传输效果,提出一种基于多载波调制技术的混合光网络波长分配优化机制。使用离散多音调制技术,将混合光网络信道带宽细分成多个子信道;针对细分的多个子信道,利用基于改进遗传算法设计混合光网络多信道波长分配优化机制,使混合光网络在波长转换器最少的情况下,光网络承载的路由请求连接数最多的目标函数,并通过改进遗传算法获取多信道波长分配优化的最优解,实现混合光网络波长的分配优化。测试结果显示:设计机制可有效减少混合光网络波长转换器用量、波长与链路资源占用量,以期为提升混合光网络波长分配效果提供一定帮助。

In order to reduce the amount of wavelength converter,wavelength and link resources and optimize the information transmission effect of hybrid optical network,a wavelength allocation optimization mechanism of hybrid optical network based on multi carrier modulation technology is proposed in this paper.Using discrete multi tone modulation technology,the channel bandwidth of hybrid optical network is subdivided into multiple subchannels;For the subdivided multiple subchannels,the multi-channel wavelength assignment optimization mechanism of hybrid optical network is designed based on the improved genetic algorithm,so that the objective function with the largest number of routing request connections carried by the hybrid optical network under the condition of minimum wavelength converters,and the optimal solution of multi-channel wavelength assignment optimization is obtained through the improved genetic algorithm,Realize the wavelength allocation optimization of hybrid optical network.The test results show that the design mechanism can effectively reduce the consumption of wavelength converters and the consumption of wavelength and link resources in hybrid optical networks,in order to provide some help to improve the wavelength allocation effect of hybrid optical networks.