论文标题
网络切片针对以服务为导向的网络具有灵活的路由和保证E2E延迟
Network Slicing for Service-Oriented Networks with Flexible Routing and Guaranteed E2E Latency
论文作者
论文摘要
网络功能虚拟化是一项有前途的技术，可以同时支持在第五代及以后的网络中具有不同特征和要求的多个服务。实际上，每个服务都由一个预定的函数序列组成，称为服务功能链（SFC），在云环境上运行。为了使不同的服务切片和谐正常工作，至关重要的是，选择云节点以在SFC中部署功能并灵活地路由服务的流程，以便按顺序处理这些功能，并保证所有资源约束的端到端（E2E）延迟约束。在本文中，我们提出了上述网络切片问题的一个新的（混合二进制线性程序）公式，以优化系统的能源效率，同时共同考虑资源预算，功能实例化，流程路由和E2E延迟需求。数值结果表明，与现有配方相比，所提出的配方的优势。
Network function virtualization is a promising technology to simultaneously support multiple services with diverse characteristics and requirements in the fifth generation and beyond networks. In practice, each service consists of a predetermined sequence of functions, called service function chain (SFC), running on a cloud environment. To make different service slices work properly in harmony, it is crucial to select the cloud nodes to deploy the functions in the SFC and flexibly route the flow of the services such that these functions are processed in sequence, the end-to-end (E2E) latency constraints of all services are guaranteed, and all resource constraints are respected. In this paper, we propose a new (mixed binary linear program) formulation of the above network slicing problem that optimizes the system energy efficiency while jointly considers the resource budget, functional instantiation, flow routing, and E2E latency requirement. Numerical results show the advantage of the proposed formulation compared to the existing ones.
