Hi Experts.
Nice table with Comparison of Key Radio Features and Parameters (4G vs 5G).
5G is the latest generation of mobile networks that aims to provide faster, more reliable, and more efficient mobile communication compared to its predecessors (4G and 3G). 5G networks are designed to support a wide range of new use cases, including virtual and augmented reality, autonomous vehicles, and the Internet of Things (IoT). 5G is expected to offer faster download and upload speeds, lower latency, and improved reliability compared to 4G.
Including all of 5G ,6G is expected to support new and emerging technologies, such as holographic communications, quantum computing, and brain-computer interfaces, and provide ultra-reliable network coverage, even in remote and rural areas.
What is Holographic communications : This a potential application of 6G technology that aims to enable the transmission of 3D holographic images and videos in real-time. The goal of holographic communications is to provide a more immersive communication experience by allowing users to interact with holographic images in a lifelike way.
Credits: 
5G Core Architecture Components:
- Access and Mobility Management Function (AMF): This component is responsible for managing the access and mobility of user equipment (UE) in the 5G network. It handles functions such as authentication, security, and mobility management.
- Session Management Function (SMF): The SMF manages the establishment and release of data sessions between the UE and the network. It is responsible for managing the Quality of Service (QoS) requirements of different applications and services.
- User Plane Function (UPF): The UPF is responsible for processing and forwarding user data packets in the 5G network. It is designed to be highly scalable and flexible to support different use cases and network slices.
- Network Repository Function (NRF): The NRF maintains a directory of network functions and their capabilities. It is responsible for helping network functions discover and communicate with each other.
- Network Slice Selection Function (NSSF): The NSSF is responsible for selecting the appropriate network slice for a particular UE or application based on factors such as QoS requirements, location, and available resources.
- Network Exposure Function (NEF): The NEF provides a standardized interface for third-party applications to access network data and services in a secure and controlled manner.
- Policy Control Function (PCF): The PCF is responsible for enforcing policy rules and managing QoS in the 5G network. It is designed to be more flexible and dynamic than the policy control function in 4G.
4G Architecture Components:
- Mobility Management Entity (MME): This component is responsible for handling functions such as authentication, security, and mobility management in the 4G network.
- Serving Gateway (SGW): The SGW is responsible for routing user data packets between the UE and the Packet Data Network (PDN).
- Packet Data Network Gateway (PGW): The PGW is responsible for connecting the 4G network to the internet and other networks.
- Policy and Charging Rules Function (PCRF): The PCRF is responsible for enforcing policy rules and managing QoS in the 4G network. It is less flexible and dynamic than the policy control function in 5G.
Credits: