What are the key performance metrics for evaluating network slicing in the 5G Core network?

Network slicing is a key feature in 5G networks that allows the creation of multiple virtual networks on a shared physical infrastructure. Each network slice is tailored to meet specific requirements, such as latency, bandwidth, and reliability, catering to diverse use cases and applications. Evaluating the performance of network slicing in the 5G Core network involves monitoring several key metrics. Here are some of the technical details for key performance metrics:

1. Latency:
   • Round-Trip Time (RTT): Measures the time it takes for a packet to travel from the source to the destination and back. Low latency is crucial for applications like augmented reality, autonomous vehicles, and real-time communication.
   • One-Way Delay: Focuses on the time it takes for a packet to travel from the source to the destination without considering the return journey. Some applications, like voice over IP (VoIP) or video streaming, are sensitive to one-way delay.
2. Reliability:
   • Packet Loss: Measures the percentage of packets that do not reach their destination. Low packet loss is critical for applications requiring reliable data transfer, such as remote surgery or critical infrastructure control.
   • Error Rate: Examines the number of erroneous bits in a transmitted data stream. This metric is important for ensuring the integrity of the transmitted data, particularly in applications like industrial automation.
3. Bandwidth:
   • Throughput: Measures the amount of data that can be transmitted over the network in a given time period. High throughput is essential for applications like high-definition video streaming, virtual reality, and massive IoT deployments.
   • Capacity: Evaluates the maximum number of connections or users that a network slice can support simultaneously. Capacity planning is crucial for ensuring that the network can handle the expected load.
4. Resource Utilization:
   • CPU and Memory Usage: Monitors the utilization of computing resources within the network slice. Efficient resource allocation is essential to ensure optimal performance and avoid resource contention.
   • Network Resource Utilization: Examines the usage of network resources such as routers, switches, and links. This helps in identifying potential bottlenecks and optimizing resource allocation.
5. Security:
   • Security Incidents: Tracks the number and types of security incidents within a network slice. This includes detecting and mitigating potential threats, ensuring the confidentiality, integrity, and availability of data.
   • Authentication and Authorization Time: Measures the time it takes to authenticate and authorize users or devices within the network slice. Rapid and secure authentication is crucial for user access control.
6. Scalability:
   • Vertical Scalability: Examines the ability of a network slice to handle an increasing load by adding more resources (e.g., increasing the capacity of virtual machines).
   • Horizontal Scalability: Evaluates the capability to scale by adding more instances of the same resource (e.g., adding more virtual machines).