The technology of network slicing, as the most characteristic feature of the fifth generation (5G) wireless networks, manages the resources and network functions in heterogeneous and logically isolated slices on the top of a shared physical infrastructure, where every slice can be independently customized to fulfill the specific requirements of its devoted service type. It enables a new paradigm of multi-tenancy networking, where the network slices can be leased by the mobile network operator (MNO) to tenants in form of public cloud computing service, known as Slice-asa- Service (SlaaS). Similar to classical cloud computing scenarios, SlaaS benefits from overbooking its resources to numerous tenants, taking advantage of the resource elasticity and diversity, at a price of risking overloading network resources and violating the service-level agreements (SLAs), which stipulate the quality of service (QoS) that shall be guaranteed to the network slices. Thus, it becomes a critical challenge to the MNOs, accurately estimating the resource overload risk - especially under the sophisticated network dynamics - for monitoring and enhancing the reliability of SlaaS business.
翻译:网络切片技术是第五代(5G)无线网络的最典型特征,它管理在共享有形基础设施顶部的多种和逻辑上孤立的切片的资源和网络功能,每个切片都可以独立定制,以满足其专用服务类型的具体要求;它使多租赁网络的新范式得以实现,即网络切片可以由移动网络运营商(MNO)以公共云计算服务(称为Slice-asa-Service(SlaaS))的形式租赁给租户。与古老的云计算假设类似,SlaaS利用资源弹性和多样性,将资源过度预订给许多租户,从而以风险使网络资源超负荷并违反服务级协议(SLAs)为代价,其中规定网络切片的服务质量。因此,网络切片对Mnos公司构成一个重大挑战,准确估计资源超负荷风险,特别是在复杂的网络动态下,以监测和提高SlaaS业务的可靠性。