How do you slice and virtualize a 5G network?

1 What is network slicing?

Network slicing is the process of dividing a 5G network into multiple independent and customized slices, each with its own resources, functions, and policies. A network slice can support a specific use case, such as enhanced mobile broadband, massive IoT, or ultra-reliable low-latency communication. For example, a network slice for autonomous vehicles may require high bandwidth, low latency, and strong security, while a network slice for smart meters may need low power consumption, long range, and high availability. Network slicing allows 5G networks to optimize their performance, efficiency, and flexibility for different scenarios and customers.

2 What is network virtualization?

Network virtualization is the process of abstracting the physical network resources, such as routers, switches, and servers, and creating virtual network elements, such as virtual machines, containers, and software-defined networks. Network virtualization enables 5G networks to dynamically allocate and configure the virtual network elements according to the demand and requirements of the network slices. Network virtualization also reduces the cost and complexity of deploying and managing 5G networks, as it reduces the need for dedicated hardware and manual intervention.

3 How are network slicing and virtualization related?

Network slicing and virtualization are closely related, as they both aim to create and manage multiple logical networks on the same physical infrastructure. However, they are not the same thing. Network slicing is a higher-level concept that defines the end-to-end functionality and performance of a network slice, while network virtualization is a lower-level technique that implements the network slice by using virtual network elements. Network slicing and virtualization work together to enable 5G networks to provide customized and differentiated services to various applications and customers.

4 What are the benefits of network slicing and virtualization?

Network slicing and virtualization offer several benefits for 5G networks, such as improved customer experience, increased network efficiency, and enhanced network flexibility. For instance, a network slice can provide guaranteed quality of service, security, and privacy for a critical application. Additionally, it can scale up or down its resources based on the traffic load or user behavior. Furthermore, a network slice can be created or deleted in minutes or hours, rather than days or weeks. All of this enables 5G networks to tailor their services to the specific needs and preferences of different customers and adapt to the changing and diverse requirements of the 5G ecosystem.

5 What are the challenges of network slicing and virtualization?

Network slicing and virtualization pose several challenges for 5G networks, such as increased complexity due to the involvement of multiple layers, domains, and stakeholders. This requires effective coordination and integration among the various entities and interfaces. Additionally, these technologies increase the security risks of 5G networks, as they expose more attack surfaces and vulnerabilities. Furthermore, network slicing and virtualization demand more automation, orchestration, and monitoring capabilities. For example, a network slice may need to be automatically provisioned, configured, and managed by a network slice manager. Moreover, a network slice may need to be continuously monitored and analyzed by a network slice assurance system that uses big data or analytics tools.

6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?