Introduction to Successful Cases of BDCOM EPON (FTTX)

Overview – What is EPON?

EPON (EthernetPassive Optical Network) is based on IEEE 802.3 modified to support Point-toMultipoint (P2MP) connectivity. IEEE802.3 defines two basic modes of Ethernet. Inthe first mode, Carrier Sense Multiple Access with Collision Detection(CSMA/CD) is applied in the shared medium; in the second mode, each site is connected bythe switch through the full-duplex point to point link. Ethernet MAC can workin two modes: CSMA/CD mode and full-duplex mode.

Theessence of EPON medium is the combination of shared medium and point-to-pointnetwork. In the downstream, it has the connectivity of the shared medium, whilein the upstream it is characterized by point-to-point network.

EPONtechnology is standardized by IEEE802.3EFM Working Group. In June, 2004,IEEE802.3EFM Working Group proposed EPON standard — IEEE802.3ah (It has beenincluded in IEEE802.3-2005 standard). The standard combines Ethernet and PONtechnology and defines a new Ethernet data link layer protocol applied to thephysical layer (mainly optical interface) norms and expansion of EPON system,which realizes TDM access of the Ethernet frame in the point-to-multipoint PON.Besides, it also defines an Operation Administration and Maintenance (OAM)mechanism.

In thephysical layer, IEEE 802.3-2005 defines to adopt Frequency Division Multiplexingtechnology (downlink 1490 nm, uplink 1310 nm) to realize bidirectionaltransmission in the single fiber. It also defines to adopt 1000 BASE-PX-10 U/Dand 1000 BASE-PX-20 U/D optical slots,which respectively support the maximumtransmission distance to 10 km and 20km. In the physical coding sub-layer, theEPON system adopts the original standard of Gigabit:  8B/10B channel coding and standard symmetricuplink/downlink 1Gbps PON transmission rate (1.25 Gbit/s wire speed).

In thedata link layer, the MPCP specifies mechanism between an OLT and ONUs connectedto a Point-to-Multipoint (P2MP) Pon segment to allow efficient transmission ofdata in the upstream direction. MPCP functions mainly in three aspects: provide timing reference tosynchronize ONUs, control auto discovery process and assign bandwidth/timeslotto ONUs.

By way of the transmissionmode of its downstream broadcast, EPON defines broadcast LLID (LLID=0xFF) asits SCB, which can be used for efficiently transmitting its downlink broadcast/multicast service. EPON also provides an optional OAM function. Besides, IEEE802.3-2005 defines an special institution expansion mechanism,whichis used to realize the OAM expanded function and remote management and controlin other link layer and higher layer application.

BDCOM Core EPON OLT S8500 Series

Status quo – Where is the Market Potential?

It hasbeen widely recognized that the optical fiber access is now emerging while the cableaccess is fading. The optical access technology is expected to be the maintechnology of the access network in the next generation. Operators all over theworld strives to secure a bigger piece of share in the GPON and EPON market.The battle becomes as tough and competitive as ever with more and more chipmanufacturers join in, from PMC, TK and Cortina in the early time to Broadcomand Qualcomm now.

It hasbecome increasingly clear that for keeping their regularly users and attractingnew users, operators in every walk of life must enhance their services. Forinstance, traditional telecom operators have to enhance their bandwidths; emergingoperators must also provide with large bandwidths and value-added service andbroadcast and TV operators have to turn their role from traditional TV programproviders to ISP. Other industries including the security industry, the smartbuilding construction project and the e-commerce area are actively applying PONproducts.

This paper introduces two successful cases BDCOMEPON products applied in broadcast and TV operators and Telecom operators.

Success Cases

Case 1 — A Successful Case in China

Key word: Next Generation Broadcasting Network (NGB)

NGB is organized by Ministry of Science andTechnology and The State Administration of Radio Film and Television. It isbased on cable network digital transformation and CMMB and propped up by theself-innovative “High Performance Broadband Information Network". It aimsfor constructing a new generation broadcasting network with Triple Play Services.

BDCOM's Contribution to NGB

BDCOM, asa member of NGB tech-team, has participated in drafting the NGB technologysolution.

Ø The Pioneer Organization of Shanghai Broadband Technology and ApplicationResearch Center

Ø Participators include BDCOM, HUAWEI Lucent Technologies, etc. As theprovider of OCN, BDCOM takes part in Shanghai NGB pilot network construction.

Ø BDCOM has actively participated and finished the NGE network test.

Ø In 2009, BDCOM has won the bid of NGB Shanghai 500,000 family userdemonstration project and become project's sole supplier of the core switch.

Ø In 2009, BDCOM core EPON-OLT products have applied in the NGB trialnetworks in 16 cities of east China.

Ø In 2010, BDCOM won the bid again of the NGB pilot project and become theprovider of 2/3 Core EPON-OLT products.

In NGBpilot construction, BDCOM high-end products have set a good example and becomea pioneer in the NGB network construction. BDCOM will always provide qualifiedproducts and selective service for the nationwide NGB construction, quickeningthe triple play services.

BDCOM “EPON+EoC” Access Solution

The“EPON+EoC” access solution is applicable to be applied in some maturecommunities. OLT lies in the sub-front-end or the regional machine room, whilethe optical splitter is located at the machine room of the community. As toONU, it can be allocated in each community. The existing corridor HFC'scoaxical cable resources and the EOC technology for the last 100m user accesswill be used in this access solution so that rewiring need not be conducted incommunity’s corridors and network upgrade is hence simpler and faster.

EPON+EOC Solution Characteristics

1. Fit for old residential area upgrade

2. Low upgrade cost

3. Coaxial-cable to the home

4. Convenient service opening

5. Comprehensive resources

Relevant Products







Case 2 — A Successful Case in Ukraine

Key word: FTTH

FTTH is fiberto the home. An ONU will be installed in the user’s house, when he subscribesan internet service. FTTH is the key true broadband telecom access technique tothe end-users. It is lately gaining a practical high interest as enablingtechnological limitations are being solved, in a cost-effective way. Whileaccess network deployment based on fiber is becoming comparable in cost tocompeting technologies (and even cheaper in some scenarios), the greatdifference on performances and future-proof technology, makes today the fiberan attractive choice.

BDCOM's Contribution to UkraineMarket

In 2009 BDCOM has introduced our EPON to UkraineMarket and won benchmarking cases successfully. Since 2010 BDCOM has developedcooperation with many Ukraine operators and undertook many large EPON FTTHprojects in Ukraine.


Advantages of FTTH

1. Triple Play

2. Fitfor Telecom and Cable operator

3. Highbandwidth

4. Highreliability

5. PureIP digital signals

6.One-line to the home, multiservice expansion

Relevant Products







Differences between EPON and GPON

Thedifference between EPON and GPON is shown in the following table:

For More Information

For more information about the BDCOM EPON, please contact your local BDCOM accountrepresentative.

Shanghai Baud Data Communication Co., LTD.

No.123,Juli Road,

PudongZhangjiang High-Tech Park,

Shanghai201203, P.R.China



Copyright ©Shanghai Baud Data Communication Co., LTD.2014. All Rights Reserved.

Thisdocument is BDCOM Public Information.

BDCOM reserves the right toalter, update and otherwise change the information contained in the document fromtime to time without notice.