5G Core description
5G Core network is the lowest layer of the 5G protocol stack and provides the essential network functions for communication, such as scheduling and transmission of user data, radio resource management, information flow control, and so on. As a key component of 5G networks, the 5G Core network has to meet diverse requirements for specific vertical industries in terms of high throughput, low latency, reliability, security, and more. The 5G Core network is the core network (CN) of the 5th generation (5G). It will consist of Evolved Packet Core (EPC), Evolved UTRAN, and E-UTRAN, and also support legacy radio access technologies such as LTE. 5G Core network is a new concept. It is a virtualized LTE/5G core network based on the Open Source Project. It provides the end-to-end solution for 5G NR, including EPC (Evolved Packet Core), OSS (Operations Support System), and ancillary services (MANO). The 5G Core is built with a set of open-source projects developed worldwide, from hardware platforms to applications and business solutions. 5G Core is next-generation wireless communication technology. 5G Core enhances current 4G LTE and Wi-Fi networks by offering greater network capacity and speed, higher data transfer rates, ultra-low latency, and massive machine connectivity. The 5G Core network provides a new foundation for the intelligent connected devices and services that will power the future of mobile broadband. It is based on a global architecture built with flexible building blocks and standardized interfaces, providing the ability to easily adapt to different access technologies, spectrum bands, and deployment scenarios.
The 5G Core network is a fundamental part of the 5G Ecosystem that follows the requirements and specifications defined by standards bodies. It includes core functions, such as transport and routing of user plane traffic, control plane traffic and management signaling, AAA services for access, charging and security policy enforcement, support for multiple access technologies, and radio resource allocation. With 5G Core, users will be able to stream TV in 4K and VR, download movies, connect at near-instantaneous speeds, and use virtual assistants to control their homes. The 5G core is connecting the first commercial 5G customers and is a step towards a unified 5G core architecture. 5G Core network is the core network from which 5G radio access networks (5G RAN) will be derived.
5G Core network aims to be the cornerstone of future 5G services by providing a reliable, flexible, and scalable foundation for next-generation networks and supporting massive connectivity requirements of users with ultra-high data rates in diverse deployment scenarios. The initial 5G Core network is used to connect end-user devices in a local area. The 5G Core network is non-standalone and requires LTE or another mobile as backhaul. 5G Core is an architectural proposal for the next-generation wireless access network that allows mobile users to take advantage of 5G services within the commercially available frequency bands (3.7 – 6 GHz). It supports the achievement of the 5G goals, such as Massive MIMO, enhanced mobile broadband, and network slicing. 5G Core refers to the set of system interfaces and functionalities that is required by the UE in order to communicate with the EPC and to use 5G-provided services over a network. 5G Core includes providing an interface between the UE and EPC; overall information management; control plane between UE and EPC for 5G services such as authentication, attach/detach, paging, and so on; mobility management including handover, tracking area update (TAU) management and tracking area list (TAL) management; radio resource allocation such as PC5 measurement, PC5 measurement reporting, radio bearer establishment, and radio bearer release; user level mobility management including user-level TAU, user-level handover, URL transfer.
