Home Broadband Development Direction

Along with the telecommunication market competition is becoming increasingly fierce, based on Asymmetric Digital Subscriber Loop Technology Based Broadband construction mode can not adapt to the demand of future high-speed broadband business. Back into the light" as:copper network transformation and improving broadband rate effective measures. In improving the access bandwidth, enhance the support ability of network to services. Enhanced carrier core competitive ability, as access network based on Ethernet technology new technology, the passive optical network to effectively alleviate the current copper were stolen, prices rose faster, the rising cost of construction. EPON and Ethernet passive optical network technology together, their goal is to use the most simple way to achieve one point to multiple point topological structure of Gigabit Ethernet optical fiber access network, EPON belongs to IEEE Ethernet standard category, for full IP overexpression is a good choice. EPON reduces the initial cost and operating cost. Can be a large number of using Ethernet mature chip, to achieve a simple, relatively low cost, easy maintenance, easy to expand and upgrade easily.Enter since twenty-first Century, the global broadband access network into the development stage. Broadband access network of China in the past two years has been developing rapidly, the current application of the main broadband access technologies are xDSL, LAN, MSTP and traditional access line. To ADSL as the representative of the broadband access technology although basically solved the problem of data access, but rely on rental bandwidth broadband strategy, along with Internet users increased traffic (such as P2P application), operators’ broadband access and business development into the " platform ", and even the emergence of every bit of income&broadband ARPU decreased quickly, in income growth lower than cost growth cycle. For operators, only for broadband access network transformation, as well as customer segment of business transformation, to drive the broadband gain promotion,"TriplePlay" and many other business will become the new broadband operators to obtain income key.Broadband access network reform and business transformation, requires access device is based on unified network carrying multiple business capacity, and to meet the growing demand for bandwidth. DSL technology due to bandwidth and access distance limitations, has been unable to meet the demand. The PON (passive optical network) technology with high bandwidth, wide coverage, single-fiber access, abundant interface and integrated service access capacity and other advantages. PON system, can not only greatly enhance the business user access speed and integrated business ability, and can provide sufficient service quality assurance. For home users, in addition to the speed of lifting, a fiber can provide voice, video and data services. At the same time as the fiber itself is of high stability, effectively reduce operation and maintenance costs, so as to help the operator to implement access network construction "put things right once and for all".At present, the main two PON standards, one is developed by IEEE802.3ah group EthernetPON (EPON) standard, another is developed by ITU/FSAN GigabitPON (GPON) standards, their common characteristics are as follows:High access bandwidth. GPON downlink rate up to2.5Gbit/s, the up-link rate up to1.25Gbit/s, EPON uses the1.25Gbit/s downlink rate, can meet the present and future of broadband business needs.Save fiber resources. Point to multiple point (P2MP) tree broadcast network topology, from one end of the board core optical fiber, finally can branch to the32/64terminal of ONU equipment, greatly saving the feeder section fiber resource, especially for the vast region, or the original optical fiber resources limited operator, using the technology of PON network can improve resource use efficiency of optical fiber.Equipment operation and maintenance, low cost management. PON optical access technology, only local terminal (OLT) and a user side device (ONU) as the active device, wherein the optical distribution network with high stability, small volume, low cost passive optical splitter, without the need to provide power supply, air conditioning and other equipment room, does not occupy the room space, can be installed on the light junction box or cable distribution frame appropriate location, easy maintenance.