Description of 5G Core Network Architecture
The 5G Core network architecture is based on existing wired and wireless access networks. It interworks with the existing core network elements (CN) in terms of transport, application server and database services, while at the same time it supports high throughput and low latency data communications between mobile devices and their applications. The 5G core network architecture dictates the system design principles that will be implemented in the radio access network (RAN), core network and other key networks, such as the cloud computing, software-defined networking and network slicing technologies.
5G network Architecture
It represents the technical standards required to achieve fast and agile communication services with a high level of flexibility and scalability. These specifications need to be followed when designing 5G core network architecture. 5G core network architecture allows both centralized and distributed approaches to evolve. All 5G NR deployments will be based on a new packet-switched air interface as well as new core network features, including orchestration, control, and management plane functions that support heterogeneous networks (HetNets). These networks are specified through the Control Plane Architecture for Next Generation Mobile Networks (C-plane) and User Plane Architecture for Next Generation Mobile Networks (UPlane).
5G System Service based Architecture
The 5G core network will be designed to meet the requirements of mobile technology, and also provide maximum support for new services such as Internet of Things (IoT), Ultra-broadband (5G-based 4K video), and High Efficiency Video Coding (HEVC). 5G is the latest generation of cellular communication. It delivers significantly improved data rates and network capacity, as well as other important capabilities such as reliable low-latency communications, massive device connectivity and the ability for devices to act on their own behalf. To realize these benefits, 5G architectures must be drastically different from those used today. For example, 5G networks must support both centralized and distributed approaches to network control and composition, including localized edge computing elements that can locally process data from sensors or smartphones on its own using a minimum amount of energy and then send selected information back to a central cloud component that can coordinate with other such components to perform analytics and rapid decision making. The 5G Core Network Architecture (5GCNA) enables the deployment of 5G networks and wireless access technologies in a cost effective manner, taking into account the cost for devices, femto cells and C-RAN elements such as radio and core network. Based on a flexible modular architecture, the 5GCNA provides a variety of options to operators on how they can select functionality to fit their business model while also supporting evolution of technologies in a timely manner. The 5G Core Network Architecture is a proposed cellular network architecture for the radio interface of a 5G mobile telecommunication system. It provides an overview of the key building blocks and concepts in a 5G core network including its high-level architecture, key functionalities, and key assumptions. The document also specifies its interfaces with other wireless systems such as LTE, WiMAX and DECT. The 5G Core Network Architecture is structured into different functional areas in order to efficiently support a variety of service requirements. To ensure stability and functionality, the different functional areas must be designed and optimized as a whole instead of individual parts. The 5G core network architecture therefore consists of four main components: the Evolved Packet Core (EPC), the Access Stratum (AS), the Access Stratum Home Subscriptions Server (AS-HSS), and Media Gateways (MGW).
