Service Function Chain Deployment for 5G Delay-Sensitive Network Slicing

In recent years, Industrial Internet of Things (IIoT) has been at a high-speed development stage. However, the diversity of services and technical standards in the Industrial Internet of Things and vertical industries makes it impossible for the existing communication technologies to use the same physical network to meet different needs of services. To tackle this problem, Network Slicing (NS) is proposed and has become the key enabling technology of the fifth generation mobile communication (5G) network. Network Slicing is a logical network running on the physical or virtual infrastructure, which can divide the network into multiple logical networks with different configurations according to different requirements. Each slice is isolated from each other and does not affect each other, which can meet the needs of different application scenarios in IIoT. In this paper, a delay optimization oriented Service Function Chain (SFC) deployment model is proposed and a two-stage collaborative deployment algorithm called DSFC is designed. Simulations validate that the proposed method can reduce the delay while ensuring the reliability of SFC deployment.