信息中心网络元模块承载的差异化服务模型

针对信息中心网络提供面向业务类型的差异化服务的问题，该文提出一种元模块承载的差异化服务模型(DSM3)。DSM3定义了基础网络控制功能单元元模块，通过匹配不同的元模块组合串实例来承载不同特征需求的业务类型；并将元模块组合过程视为业务策略实例组合串业务承载路径的二级映射问题，重点设计了针对实时业务、非实时流媒体业务和用户自产生业务的路由计算类元模块实例。仿真表明，DSM3通过少量额外控制开销，降低了上述3种业务的平均响应时延，提高了网络节点缓存命中率，实现了对于差异化服务需求的支持。

Differentiated Service Model Based on Meta Module inInformation Centric Networking

In order to provide differentiated services in information centric networking, a Differentiated Service Model based on Meta Module (DSM3) is proposed. DSM3 defines the basic network control unit as meta module, and matches different meta module combination cases to carry different business with various demand characteristics. The meta module combination process is deduced as the secondary mapping problem of business policycase combination stringsbusiness path. Then, the meta module cases of route calculation for real-time service, non-real time streaming media and user generated content are designed. Simulation results show that through a small amount of additional control overhead, DSM3 reduces the average response delay of the three kinds of business above, improves the network average cache hit rate, and supports differentiated services.