Research On MAC Layer Mechanism Of HINOC 10 Gigabit Coaxial Access System

During the 13th Five-Year Plan period,SARFT(The State Administration of Radio Film and Television)promoted the implementation of key technologies such as big data,cloud computing,and 4K/8K ultra-clear video.As a high-performance coaxial broadband access technology independently developed by our country,HINOC utilizes the underutilized bandwidth and high-quality transmission capacity of coaxial cables in the implementation of 4K/8K ultra-clear video technology.In the 100-meter scenario,users are provided with a high-speed,low-latency broadband access experience.In order to respond to the 14 th FiveYear Science and Technology Development Plan of the SARFT and promote the implementation of 5G+8K ultra-clear video technology,we are conducting research on the HINOC 10 Gigabit coaxial access system.The main work of this paper can be divided into three parts: designing the MAC channel allocation mechanism and data transmission mechanism according to the functional requirements and performance indicators;simulating the function and performance of the MAC layer mechanism designed in this paper based on the HINOC MAC layer simulation platform designed by us and combining the simulation results and theoretical derivation to verify the correctness and rationality of the MAC layer mechanism;designing a solution for HINOC time synchronization in 5G small cells after verifying the correctness of the MAC layer mechanism.Firstly,the design requirements of HINOC 10 Gigabit coaxial access MAC layer mechanism are studied.And then,we draw out the channel allocation and data transmission mechanism that this paper needs to design.Then,the HINOC2.0,HINOC3.0 system and PHY layer are introduced and used as the basis for the design.Next,we analyze the design principles that channel allocation mechanism and data transmission mechanism need to follow from the functions and performance indicators.Secondly,the channel allocation mechanism of the MAC layer is studied.Several Pd cycles and flexible MAP cycle structure schemes proposed in this paper are introduced,and an efficient allocation structure is selected according to the design principles,which is used to realize the channel time Periodic allocation of slots.On this basis,the allocation methods of MAP cycle in the 10 G access network and the hybrid network are designed respectively.In order to support the requirements of efficient notification of channel planning and userdifferentiated channel bandwidth,a flexible MAP frame structure and multi-channel bonding mechanism are designed in this paper,a user balanced access method is proposed for channel selection of users in the channel bonding process.Then,the data transmission mechanism of the MAC layer is studied.The data frame structure that supports carrying multiple service flows is designed firstly.In order to realize the bearer transmission of EMAC frames and the Qo S guarantee of upper-layer services,we design a framing and de-framing method,a priority mapping mechanism and a data frame reordering mechanism.After that,the data transmission process of various services is designed for different services such as unicast,multicast and broadcast.Next,we describe the HINOC MAC layer simulation platform based on discrete events and the discrete event operation process designed to verify the MAC layer mechanism.The function and performance of the MAC layer mechanism designed in this paper are simulated on the HINOC MAC layer simulation platform.The functional aspects include the simulation of core functions such as multi-channel bonding mechanism,user equalization access algorithm,MAP frame channel planning and data transmission,which proves the feasibility and correctness of the MAC layer mechanism.On this basis,the theoretical derivation and simulation analysis of the performance of the MAC layer mechanism are carried out,which proves that the MAC layer mechanism designed in this paper can achieve the performance indicators such as throughput,delay and bandwidth allocation granularity in the design requirements.Finally,in order to develop the scenario of HINOC in the 5G era,it is proposed to use HINOC as the last hundred meters of wired backhaul access for 5G small cell time synchronization in this paper.Then we describe a detailed study of two synchronization solutions and compares the advantages and disadvantages of each solution and its implementation feasibility.