Dear community friends, today I would like to share content related to 5G network slicing.
What Is Network Slicing?
Network slicing enables multiple end-to-end networks to be virtualized based on one common hardware by using the slicing technology. Each network has different network functions and adapts to different service requirements.
Figure 1 Network slice diagram
The preceding figure shows the 5G network slicing architecture. After purchasing physical resources, operators use physical resources to virtualize an eMMB slicing network for users' Internet access services. Then, operators can meet the smart meter reading requirements of some vendors in vertical industries. Physical resources are used to virtualize an mMTC slice network, and the two-slice networks respectively provide services for different service scenarios.
Why does 5G require network slicing?
Figure 2 Schematic diagram of 5G network slices
As shown in the preceding figure, network slicing must be used to meet various new service requirements
How to implement network slicing?
Figure 3 Schematic diagram of network slice implementation
A network slice is an end-to-end complete logical network. Each network slice includes a radio network sub-slice, a transport network sub-slice, and a core network sub-slice, and is logically isolated from the radio network to the bearer network and then to the core network.
Network slicing features on-demand customization, end-to-end, and isolation. Network slicing supports end-to-end dynamic on-demand deployment of network services and ensures independent lifecycle management of slices without affecting each other.
Wireless Slicing
Wireless Slicing ensures services through QoS scheduling or RB reservation.
Figure 4 Schematic diagram of Wireless Slicing
Core network slicing
Microservices are flexibly orchestrated based on service requirements. Different microservice functions are deployed for different slices. Sliced microservices can be flexibly deployed at different locations on the network.
Figure 5 Schematic diagram of Core network slicing
Bearer network slicing
The bearer network can implement VPN-based soft slicing and FlexE-based hard slicing.
Figure 6 Schematic diagram of Bearer network slicing
In terms of network slicing, a pipe slicing is constructed based on FlexE. Because FlexE uses a TDM-based timeslot allocation manner, services can be completely isolated, and E2E hard pipe slicing can be implemented. Each slice network corresponds to the same or similar requirement. In each slice, different users can be isolated using VPN and QoS mechanisms. At the management and control layers, each shard also has an independent view and resource allocation.
From the preceding content, you should understand that network slicing is indispensable for 5G networks.
That's what I want to share about 5G network slicing. Welcome to read.
