虚拟网络映射的电信级优化问题研究

Study on Carrier-Level Optimization of Virtual Network Embedding

网络虚拟化技术是解决当前网络僵化问题的有效手段之一,虚拟网络映射是其中关键技术。文中采用一致的优化模型综合分析网络资源分配的现有技术方法,包括成本优化、收益优化、剩余资源优化、网络能耗优化。进一步针对电信级运营,分析了业务等级违约最小化、跨网络分域部署策略和博弈机制设计方案,论述了动态拓扑适应、接纳和可靠性控制的方法,以及采用比例计算节能的优化问题建模。

Network virtualization （NV） promises a most effective measure to overcome the ossifications of conventional Internet.Virtual network embedding （VNE） is one of key issues in NV development.This paper presents a summary by using a consistent optimal formulation over the current technologies of network resource allocation,including cost minimization,revenue maximization,residential resource maximization and energy saving maximization.The problems such as Service-Level-Agreement violation,intra-domain distribution and game mechanism design,are discussed aiming at a carrier-level VNE solution.The paper provides in the further the method for dynamic topology adaptation,access and reliability control,and a modeling means for energy savings by using the proportional computing techniques.