Research And Implementation Of Real-time Network Bandwidth Resource Reconstruction Mechanism Based On TSN And FlexE

The three major application scenarios of 5G have different requirements for data transmission delay,network bandwidth,communication reliability and number of business connections.As a basic network,the bearer network must be able to provide differentiated network services for different application scenarios to meet Diverse requirements for bearer networks in different application scenarios.The continuous improvement and enhancement of Ethernet technology makes it more and more important in the bearer network,but this technology still cannot fully meet the requirements of new services for the bearer network.In view of this problem,this paper proposes a real-time network bandwidth resource reconstruction mechanism that can enhance the carrying capacity of Ethernet,combining time-sensitive network technology(TSN)and flex Ethernet technology(Flex E).In this paper,firstly,the related protocols of the time-sensitive network and the core mechanism of flex Ethernet are studied in detail and the mechanism of the time-sensitive network 802.1QAV protocol to ensure real-time service transmission and the method of flex Ethernet to divide the underlying bandwidth of the network are introduced in detail;Then on this basis,the defects of the flex Ethernet core mechanism were optimized,and the application scenarios of flex Ethernet were further expanded;Finally,according to the new requirements of 5G new services for the bearer network,combining the advantages of timesensitive networks and flex Ethernet technologies,a real-time network bandwidth resource reconstruction mechanism is proposed.This mechanism can flexibly allocate the bandwidth resources at the bottom of the network while reducing the data transmission delay,which greatly improves the bearing capacity of Ethernet for new 5G services.In order to test the ability of the real-time network bandwidth resource reconstruction mechanism to reduce data transmission delay and reconstruct the underlying network bandwidth,we set up a real-time network bandwidth resource reconstruction experiment system on the FPGA platform,and performed delay and bandwidth on the system.Assignment test.The comprehensive analysis of the test results shows that the real-time network bandwidth resource reconstruction mechanism proposed in this paper can not only effectively reduce the transmission delay of data on Ethernet,but also can flexibly allocate the underlying bandwidth of the network.The advantage has achieved the expected effect,has potential application value,and is worthy of in-depth research.