基于网络效用最大化的一体化网络服务层映射模型  

Mapping Model for the Service Layer of Universal Network Based on Network Utility Maximization

作　　者：李世勇[1] 秦雅娟[1] 张宏科[1] 

机构地区：[1]北京交通大学电子信息工程学院下一代互联网互联设备国家工程实验室,北京100044

出　　处：《电子学报》2010年第2期282-289,共8页Acta Electronica Sinica

基　　金：国家973重点基础研究发展规划(No.2007CB307100);国家863高技术研究发展计划(No.2007AA01Z202);长江学者和创新团队发展计划(No.IRT0707);高等学校学科创新引智计划(111项目)(No.B08002);国家自然科学基金(No.60833002)

摘　　要：端到端多连接多路径技术能够极大地提高传输的吞吐量,增强数据传输的安全性和可靠性,因此得到了很多学者的关注.一体化网络中提出了从服务到连接和从连接到路径的映射机制,实现了并行多连接多路径的数据传输.本文研究了一体化网络服务层的映射机制,基于网络效用最大化思想,给出了从服务到连接和从连接到路径的多对多映射的数学模型.服条经连接到路径的映射过程就是如何合理有效地将路径带宽分配给各个服务,从而使得所有服务的效用之和达到最优.当网络中同时存在弹性服务与非弹性服务时,给出了映射模型的一般形式,确保了非弹性服务能够获得一定的服务质量.Technologies of end-to-end multi-connection and multi-path transmission have gained a lot of researchers＇ attention since they can improve throughput and promote security and reliability in data transmission.In the Universal Network,mapping mechanisms are presented from service to connection and from connection to path, so that data transmission with concurrent multiconnection and multi-path is also realized. This paper analyzes the mapping mechanism for the service layer of the Universal Network, and proposes the mathematical models for multi-to-multi mappings from service to connection and from connection to path based on network utility maximization. Mapping from service to path via connection is indeed how to allocate the path capacity to all services so that the aggregated utility of all services is globally optimized. General mapping models are also presented when there are inelastic services as well as elastic services in the network, so that the inelastic services can be guaranteed with certain QoS.

关 键 词：一体化网络 多连接 多路径 映射 效用 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]