Design And Implementation Of Management And Control Module Of GPON ONU Based On Embedsystem

With the development of communication technology, backbone network and local area network have made enormous development. However, the access network which connects the subscribers and backbone network has become the bottleneck of the information highway. In the field of wired solutions, passive optical network(PON)has good market prospects because of its bandwith capacity. As a broadband access network with the purpose of achieving full service access, GPON has greater advantage in bandwith capacity, security and manageability compared to other PON technologies. GPONhas been considered as one of the best solution to the broadband access network.As the core module of GPON system oriented users, the implementation technology and cost of ONU affect the affordability of users directly,and also affect the development and application prospects of GPON technology, so it is meaningful to study ONU system-This jarticle first introduces some popular kind of fiber aceess techniques and the development of PON.lt deseribes the composing, work theory, advantages and protocol of GPON.The article puts forward the whole configuration of ONU.It is emphasis on the management and control module.According to G984.X, the article studies themanagement and control of ONU system, and designs the hardware and software of management and control modules of ONU.The article is emphasis on processing information of OMCI frame. It achieves the function of how to send and receive OMCI frame and so on. At the last of this thesis,the debugging process of ONU system is analysed, and confirm the Linux serial port results.