Cloud IMS, based on the NFV architecture, can be deployed on the general COTS hardware and supports seamless roaming among 2G, 3G, 4G, and WiFi networks, as well as fixed-mobile convergence (FMC). Cloud IMS adopts low coupling and stateless layered design; it separates public modules from service logics and make them general components; and separates the service control plane from the user plane and thus making the deployment more flexible. Cloud IMS introduces micro-services, network slicing, DevOps, and other innovative technologies and ideas, facilitating smooth evolution to the future Cloud Native network.
ZTE's IMS portfolio has already been cloudified and can be deployed together with the legacy IMS network to ensure smooth network upgrade. By miniaturizing and deploying Cloud IMS on the public cloud, carriers can fast verify and construct a cloud-based network at a low cost.