Research On Application Of EPON In Access Network

Recently the access network solution submitted by the Provide Internet service providers is greatly different from their requirements. The local network broadband used by the end user is the opening of the bandwidth:10M and 100MB, The MAN(Metropolitan Area Network)already support 1 Gigabit Ethernet and 10 Gigabit Ethernet. But the data which are transferred between end user and MAN remain less than 1MB in most cases and even several 10KB sometimes. Access Network si still a big bottle-neck between the huge capability local network and the backbone network. In order to show the prominence and importance of the access network, many kinds of technology combined with access network is experimented, EPON is found to be the best structure which integrated with networkThe paper first introduces Ethernet Passive Optical Network (EPON). It summarizes the current FTTx technology, standards, principle, the key technical and advantage.The paper focuses on EPON application in access network. First, it analyzes the existing network solution in commercial building. Because the existing network structure is complicated, not manageable. It needs fixed room for the equipment installed and the cost is high. The paper puts forward EPON application in commercial buildings and compares the user EPON access network solution, operations, economic and other areas. It compares EPON with SDH, ADSL fiber modem etc. Paper summarizes EPON application in commercial buildings mode and analyses how to solve the problem of existing network structure in commercial buildings. Paper also analyses the application mode in residential communities, the cost of EPON or ADSL, LAN are almost the same, but the system efficiency has been improved. So it must be appropriately developed.Next paper summarizes the further design elements in the process of implementing, and explains the building address, the distance from the project of OLT, ODN, ONU. Paper cites successful application cases and experience in Beijing. The summary is helpful for the practical application. To verify EPON access network is feasible, I participated in the study of single EPON system interoperability test. It describes test environment, programs and the results. The contents of the tests include EPON and MSTP interoperability testing, Internet access tests, IAD interoperability testing which is the NGN equipment. It provides a reference and the foundation of EPON application in commercial buildings.With the price of fiber and EPON equipment falling and development of technology the advantages of EPON's high performance will be increasingly obvious. In the future, fiber access will become the main means of access.Fiber access network access is the development trend of access network. At present, EPON technology has gradually matured, the costs have been declining and its functions have been ameliorated. EPON have been widely used in domestic and abroad. EPON technology will be more and more usable.