Hardware Design And Implementation Of Broadband Multiservice Access Network Switches

WANG QIANG (Computer Application Technology) Directed by: FANG GUI MINGBroadband multiservice access network can provide several kinds of services within a single platform. It is more economic and flexible compare to multi platform. Operation, maintenance, administration and network construction expense could also be reduced.There will probably be 3 stages in the evolution of access network. The first stage may be high-speed data access network. The second stage may be video voice data converged access network. The last stage may be full-service access network in the form of FTTH. The second stage, multiservice converged access network, will start soon. FTTB/FTTC plus Ethernet would be a practicable choice.It is practicable to build broadband multiservice access network using multilayer Ethernet switch supporting lots of QoS functions. In this paper, the hardware design and implementation procedure of three switches is expounded by function modules. The requirement analysis is introduced. Debugging and testing method and some instructions of high-speed digital system design are also discussed in brief.This paper consists of six chapters. The first chapter is an overview of current condition and trends of broadband access technology. The second chapter is a brief introduction of the residential broadband multiservice network system. The third chapter includes requirement analysis, system specification and platform choice. The fourth chapter introduces the design and implementation of SW1200, SW200 and SW100 by function modules, essentials and difficulty is discussed. The fifth chapter introduces the steps and methods of debugging and testing. The sixth chapter summarizes the paper, points out potential improvements of current implementation.