Research On Key Technologies Of HINOC System Supporting 10 Gigabit Access

With the basic completion of fiber-optic backbone network in China,broadband access technology has become a key factor limiting the development of wired broadband network.In many broadband access media,coaxial cable not only has many technical advantages,but also has been widely laid in China.Therefore,the development of coaxial access technology can not only meet the needs of high-performance broadband access,but also conform to China's national conditions,and reduce the deployment cost.HINOC(High performance Network Over Coax)technology is a coaxial broadband access technology with complete independent intellectual property rights,which is developed according to the characteristics of China's wired coaxial network.At present,it can provide Gigabit access rate.Based on domestic chips,it has the conditions for large-scale deployment.With the increasing demand of users for broadband access performance and the development of foreign related technologies,HINOC technology is bound to evolve to 10 Gigabit,so our group has conducted in-depth research on the key technologies of 10 Gigabit coaxial access technology.The main contents of this thesis are as follows: aiming at the problem of multicast transmission and node acceptance in HINOC3.0 network,a solution of multicast transmission mechanism in 10 gigabit coaxial broadband access system is proposed,and an acceptance signaling protocol is designed for HINOC terminal devices to join HINOC network under multi-channel condition.Then the corresponding simulation environment is built to realize the simulation of multicast transmission mechanism and admission mechanism.The simulation results verify the feasibility and effectiveness of the proposed multicast transmission mechanism and admission mechanism.In the design of multicast transmission mechanism,firstly this thesis analyzes the design requirements of multicast transmission mechanism in the 10 gigabit coaxial broadband access system and puts forward the corresponding design ideas.Then,the multicast transmission mechanism is designed,including: multicast frame format,multicast related table items,channel selection algorithm in general scenarios,channel selection algorithm in shunt scenarios,and multicast forwarding mechanism.Finally,based on the above design,the simulation of multicast transmission mechanism is realized based on the MAC layer protocol simulation platform of our group.According to the analysis of the simulation results,the correctness and effectiveness of the multicast transmission mechanism are verified.In the design of node admission mechanism,aiming at the characteristics of HINOC3.0and the shortcomings of HINOC2.0,this thesis analyzes the design requirements of the two parts of the admission mechanism,and makes a detailed design.Firstly,aiming at the shortcomings of the existing static competition mechanism,a dynamic competition mechanism is designed,which can dynamically select the optimal competition strategy in different scenarios.Then,according to the design requirements of HINOC3.0 admission signaling protocol,a parallel processing idea is proposed.Aiming at this idea,a general state analysis method is proposed,and the HINOC3.0 admission signaling protocol is designed by using this method,which ensures the feasibility of the protocol.Finally,the static contention,dynamic contention,HINOC3.0 admission signaling protocol and the whole admission mechanism are simulated respectively.The performance of different algorithms and protocols is compared,and the correctness and effectiveness of the proposed dynamic contention mechanism and HINOC3.0 admission signaling protocol are verified.