华为-PON

HUAWEI TECHNOLOGIES CO., LTD.2009-6-8Maximize your network valueFrom Bandwidth Focus to FullService OrientedContentsThe past, present & future of PONtechnologiesFull service to be the engine of the sustainable revolution of opticalaccess networkContributions of Huawei to the industryWhy we choose PON technologies in Access Network?lIn 1980’s, BT invented the concept of PON. At the beginning, PON was viewed as a means of saving fiber and optoelectronic resources (very costly at that time)l We ’ve seen huge price-reduction of fibers and components, so why still PON today? lPON retains the following advantages over the competing systemsp Reduction in fiber count, which is key for reducing the CAPEX and the OPEX of the fixed network p Reduction in CO optics, equipment, and fiber terminations, key to reducing CO space requirement p Avoids active electronics in the access network, avoiding many economic and practical issues.p Allows the dynamic sharing of a single large pool of bandwidth, rather than a small fixed amount pSupport of broadcast and multicast services in a natural and simple waylFor these reasons, most network operators choose PON as their fiber access solutionEquipment BuildingDistribution DropWhat would be the best PON technology?l The larger split ratio and the longer transmission distance, the better…l However, a “super PON”does bring some new problemsp A larger split ratio will cause the fewer bandwidth per user;n We can increase the data rate, but that costs money for better optic-electronics;p The insertion loss of the splitter requires higher optic budget;it will lead to more costly optics-electronics and equipmentl PON technology is all about tradeoff: bandwidth, split ratio and distance p Fully making use of the mature optic-electronics, enlarging the split ratio as possible, and lessening the tension between bandwidth and split ratiop Offering the lowest bandwidth cost for users, and making sure that it can also meet the service demand in some future yearsTwo mainstreams –GPON and EPONn As different featured they are, both GPON and EPON show quite the similar balance among bandwidth, split ratio and transmission distance.Operators来源:Informa Telecoms & Media,2009Vendorsn Traditional broadband DSLAM vendors are able to provide GPON product n Either for GPON or for EPON, the industrial chain is ready.LeadingSystem vendorsMajor chip vendorsThe evolution of NG PONn The potential next generation PON candidates are 10GEPON, 10G-GPON and WDM PON n There’s still a long way to go before the commercial usage of next generation PON.ContentsThe past, present & future of PONtechnologiesFull service to be the engine of the sustainable revolution of opticalaccess networkContributions of Huawei to the industryHUAWEI TECHNOLOGIES CO., LTD.Page 10Huawei ConfidentialThe convergence of networks and full service accessOLTSplitterPON PONFTTB住宅用户lNetworks are now transitioning from the traditional service-segregated to the full servicesintegrated access. Thanks to the optic access technique, the convergence of business, wireless and residence uses is possiblel The service integration and the device unification facilitate the progress of FTTx networkslThe key synergy here is that network nodes are greatly reduced, the original hierarchy network is delayered, and the total cost of ownership (TCO) is reducedTransforming of OLT: From Access to AggregationØIn a converged network, the OLT becomes the unified single platform for residential FTTx access, DSLAM aggregation, business private line and femto-cellØOLT could be viewed as a combination of access node and aggregation nodeBRASBRASPico/Femtocel lOLT --larger, fewer officesuser Module office End office COl one single OLT can cover larger areas：p Reduce the physical space and lessens the maintenance work p Reduce the constructing cost and set-up costkeys for larger volume OLT technique (1)–higher split ratio, longer distance and more bandwidth lWith a 1:128 splitting ratio, Class B+ cannot afford transmission over 5km.lHowever, Class C+ could provide such an ability to support ~10km transmissionwith a 1:128 ratioClass C+: 33dB loss budget33dB--Total2dB -2dB reserved 24.5dB 73.5 dB/per splitting splitter 3.5dB 10km 0.35 dB/km Fiber 2.5dB 50.5 dB/per unit connect orPower budgetunit Opticalattenuation (worst case)elementl More than 100 PON slotsl Large volume switch, 10GE per slot l n ×10GE@uplinklEnhanced Uplink protection and PON protection1：64～128Large size OLTkeys for larger volume OLT technique (2) –service modelsØTraffic model ：a converged layer 2 non-router distributed model ØUNI side: multiple traffic flows model based on users ØNNI side: multiple traffic flows model based on servicesBRASNNI sideUNI side VLAN based VLAN based onserviceVOIP Video HSI VLAN based onContentsThe past, present and future of PONtechnologiesFull service to be the engine of the sustainable revolution of opticalaccess networkContributions of Huawei to the industryHuawei ’s achievements in PON standard organizationsn As actively involved in ITU-T, FSAN, IEEE and some other standard organizations, Huawei has beenassigned 5 chairs and editors.n Huawei has served as the liaison between IEEE 802.3and ITU-T. Also Huawei has been assigned leader of two study groups .n From 2006 to 2008, Huawei contributed the most in ITU-T, FSAN and IEEE, among all the vendors; herein 13 technical contributions from Huawei has been accepted and consented and put into international standard.n Huawei is also heavily devoting into CCSA standardization works, with the goal of facilitatingthe maturity and application of the standardHua wei（个）Huawei’s PON products now spread all over the worldn In Chinese EPON market, Huawei takes the biggest market sharen Except for the North America region, Huawei wins the biggest portion in the world GPON market: 4 million users in all. Huawei has contracted to build the biggest GPON FTTH network, the biggest GPON FTTB commercialized network and the first GPON network for wireless backhauling.Huawei is the first one of releasing the whole solution of next generation PON systemn The Terabit all optic access platform, MA5680T，provides the largest switching capacity in the world. By being equipped with the10G EPON or 10G GPON or WDM PON interface cards, it can smoothly upgrade to the next generation PONn The second generation of slotted MxU ONU, is designed with non-blocking bus bandwidth and forwarding capacity. Once the uplink interface card changes, it can support the 10G EPON or 10G GPON or WDM PON system; the ODN remains untouched.Thank you 。