Collaborative Control and Optimization of QoS in 5G and Industrial SDN Heterogeneous Networks for Smart Factory

The 5th generation mobile communication system (5G) and industrial Software Defined Network (SDN) heterogeneous network architecture is the main networking method for the production management network of smart factories in the future. High data rate, low latency and mobility are the characteristics of those production management applications accessed by 5G. This paper analyzes the problems of QoS guarantee in heterogeneous networks of 5G and industrial SDN, and proposes a QoS collaborative control architecture for heterogeneous networks. The new architecture introduces the Flow QoS-coordinator functional entity, and defines the QoS collaborative control process among the entity, application systems,5G and industrial SDN networks. This paper introduces the network slicing capability in industrial SDN network, and constructs a traffic flow path network model. Considering the sensitivity of data transmission delay in industrial production management applications, the SDN flow path planning and global dynamic optimization method based on the dual parameters of communication rate and transmission delay are given. The scheme improves the real-time performance of flow path planning for new access services, and ensures the QoS of these existing services. Establishing QoS flows dynamically for application services avoids reserving too much bandwidth for these highly mobile and high-speed services, which can reduce the cost of network construction.