一种基于种族分类进化的QoS异构组播路由机制

随着新型网络应用的大量涌现,传统的网络技术已无法满足当前应用在带宽、延迟及出错率等方面的需求,IP over DWDM光互联网以其独特性能优势成为研究热点。基于种族分类进化算法,提出了一种IP over DWDM光互联网服务质量QoS异构组播路由机制。具体地,利用概率论方法处理网络状态参数信息的不确定性;引入模糊数学方法,确定用户对QoS的需求并提供柔性QoS支持;综合考虑网络提供方和用户方的利益,设计公平的带宽定价方法。仿真结果表明,该路由机制获得了良好的综合性能指标,可以有效地解决IP over DWDM光互联网中的柔性QoS异构组播路由选择问题。

A QoS heterogeneous multicast routing mechanism based on species evolutionary algorithm

With the emergence of a large number of new network applications, traditional network technologies cannot meet the requirements of current applications on bandwidth, latency, error rate and etc. In this case, IP over DWDM optical Internet has become a research hotspot with unique characteristics and advantages. In this paper, we put forward a heterogeneous multicast routing mechanism for IP over DWDM optical Internet based on the species evolutionary algorithm. The scheme employs the theory of probability to solve the uncertainty problem of networks’state parameters information. We adopt the fuzzy method to support flexible QoS and design a bandwidth pricing method which considers the benefits of both users and network service providers. Simulation results show that the proposed mechanism can achieve good comprehensive performance indexes and effectively solve the QoS heterogeneous multicast routing problem in the IP over DWDM optical Internet.