454022781-ODN-Planning-and-Design-Suggestions-TLF.pdf

2. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Contents 1. Deployment Scenarios Design 2. ODN Topology Design 3. ODN Protection Design 4. ODN Splitting Strategy 5. ODN Equipment site location 6. ODN Link Loss Budget Page2

3. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Optical Distribution Network (ODN) for FTTx FTTH FTTB Building Telephone Room (FAT) Manhole Distribution Cable Drop cable Fibre Distribution Point Fibre Distribution Point Feeder Cable OLT FTTC Underground Manhole Manhole CO Building Riser Duct Customer Access Point Customer Access Point Pole Mounted FAT or TB ONT Roadside cabinet (FDT) Indoor

4. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. ODN Solution: FTTH Page 4 Center office Home GPON GPON ONT PC TV Phone Feeder optical cable Distribution optical cable Drop cable 3-5 km < 300 m Fiber P2P P2P PC TV Phone PC Phone

7. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. CO CO Star (Tree & Branch) Cable Topology • The CO is located at the nominal central part • Cable sizes are tapered down into smaller from CO • Diversity can only be fed by a separate cable/star

8. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Ring (Loop) Cable Topology  The CO is located at a point of the ring  Same cable size throughout the ring  Diversity can be fed from either sides of the ring F e a t u r e s

9. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Bus Topology Page9 CO CO CO CO • The cable links to two COs that are not far apart • Fibres can be used for both local & junction applications • Diversity can only be fed by separate COs

10. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Sector Consumer Sector Business Sector Customer Type Private individual Teleworker SOHO SME Enterprise, Hospitality Route Type Residential & Scattered Business Routes Dense Business Routes Suggested Topology Star (Tree & Branch) Ring or Bus Design of ODN Cable Network Topology Buildings Residential Buildings Commercial Buildings Urban Landscape Single-Dwelling Unit (SDU) Areas •Villa-type dwellings •Row-housing Multi-Dwelling Unit (MDU) Areas •Apartments •Public Housing Scattered Commercial •Multi-tenant •Malls •Shops, Offices Dense Business Areas •Commercial Complex •Down town urban area

12. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Type A -fiber backup Page12 Main features There is no backup on devices. When the primary fiber fails, the services on the fiber are transferred to the secondary fiber. Service interruption occurs, and the interruption duration depends on the time of line recovery. When disconnection occurs on the line from splitter to ONT, service interruption will occur and no backup happens.

13. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Type B - OLT interface backup Page13 OLT provides two GPON interfaces. This type protects the primary fiber. When the primary fiber fails, the services on the fiber are transferred to the secondary fiber. The protected objects are restricted to the fiber from the OLT to the ONT and boards of the OLT. For the faults that occur on other parts, no protection is provided. With potential security problems, it cannot satisfy the customer requirements. Fault locating fails. Main features

14. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Type C - all backup Page14 This type is a type of whole-network protection. Two routes are provided between OLT and ONT, ensuring recovery of various faults. It is complex to realize this solution and it is not cost-effective. Main features

15. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Type D - whole link protection Page15 It supports the usage of mixed ONTs in the network. ONTs either with a single PON port or with two PON ports can be used. Users can select ONTs based on the actual needs. It is complex to realize this solution and it is not cost-effective. Main features

16. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Page 16 Method of an ODN Design-Dual-homing Protection Mode for the OLT EMS ONT #N … OLT A OLT B ONT #2 Optical splitter Working interface Standby interface launching No launching ONT #1 EMS ONT #N … OLT A OLT B ONT #2 Optical splitter launching Alarm to EMS Open the standby interface  The EMS configures the GPON working interface and standby interface.  The working interface works but the standby interface does not work.  If the working interface is powered off, an alarm is generated.  Then, the standby interface works as the working interface under the control of the EMS. Working interface Standby interface ONT #1

17. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Page 17 Method of an ODN Design-Solution Selection Protection Scheme Advantage Disadvantage Type A Optical cables are protected at the feeder cable section. No protection against other faults Type B (recommended) 1. Optical cables are protected at the feeder cable section. 2. The OLT board is protected. No protection against other faults Type C The entire network is protected. High investment and hard to implement Type D The entire network is protected. High investment and hard to implement Dual homing (P2P) Loop protection formed by different COs. Very high investment and hard to implement

19. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitting Strategy Considerations  In deciding the number of stages of optical splitting to be used, ODN Designer should take into account these factors :  customer density,  distribution of customers  utilization of the splitter’s output ports. Page19

20. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Centralized Optical Splitting  In general one-stage optical splitting can be used for all FTTx architectures. For FTTH, it is suitable for commercial building, medium rise building and villas. Page20 Optical splitter OLT 1- Stage Optical Splitting ONU ONU

21. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Centralized Optical Splitting in FTTH Page21 FTTH for Medium Rise Buildings (< 10 storey) Splitter in the Telephone Room of the building  Centralized optical splitting is also suitable for FTTH for medium rise MDU. With households not more than 50 per customer building, ODN designer can deploy a 1:32 optical splitter to serve the whole customer building.

22. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Optical splitter in customer building ODF 1- Stage Optical Splitting ONU ONU ONU OLT Feeder Cable Primary Distribution Cable Secondary Distribution Cable Primary FDT FAT Secondary FDT Location of Centralized Optical Splitter  Indoor Environment  In centralized telecom room of small community area.  In Telecom/ ELV room of customer building. Page22  On wall-mounted fibre Terminal Box (TB) in the riser duct of the customer building.

23. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. ODF 1- Stage Optical Splitting ONU ONU ONU OLT Feeder Cable Primary Distribution Cable Secondary Distribution Cable Primary FDT Secondary FDT Closure Optical splitter housed in outdoor environment ( In FDT/Splice Closure) Location of Centralized Optical Splitter  Outdoor Environment  At the Primary Fibre Distribution Terminal (FDT)  At the Secondary Fibre Distribution Terminal Page23  At the Fibre Splice closure in the manhole or on telephone pole.

24. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Cascaded Optical Splitting Page24 OLT 2-Stages Optical Splitting ONU Optical splitter Optical splitter Optical splitter ONU ONU ONU 1st Stage Optical Splitter 2nd Stage Optical Splitter

25. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Location of Cascaded Optical Splitter  Splitter at Exchange and FAT  This design is suitable for area where most of the customers are living in houses ( Single Dwelling Unit, SDU) and that Multiple Dwelling Units (MDU) are few. Page25 ODF 2-Stages Optical Splitting ONU ONU ONU ONU 2nd Stage Optical Splitter at FAT OLT 1st stage splitter at the Exchange

26. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. ODF OLT ONU ONU ONU ONU ONU ONU 1st stage optical splitter at the FAT 2nd stage optical splitter at TB 2- Stage Optical Splitting Location of Cascaded Optical Splitter  Two-Stages Splitting at Customer Building Page26  This design is suitable for area where the customers are densely populated and live in high rise buildings (MDU). This design is widely adopted in Korea and Hong Kong.

27. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. 2- Stage Optical Splitting ODF OLT ONU ONU ONU ONU 1st stage optical splitter at the FDT 2nd stage optical splitter at FAT FDT Drop cable Location of Cascaded Optical Splitter  Two Stages Optical Splitting at FDT & FAT Page27  This design is particularly suitable for scattered SDUs in the rural areas. It is also suitable for rural community where the Network Operator wants to upgrade the performance of her broadband network.

28. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Page 28 Method of an ODN Design-Splitting Solution Confirmation Splitting Mode Concept Advantage Disadvantage Centralized splitting Splitters are placed in a centralized manner. Generally, in centralized splitting, 1-level splitting is adopted. Centralized management, less splices, less link loss, low maintenance cost Hard to expand the capacity Distributed splitting Splitters are widely distributed, and splitting close to the user end is installed in closure. Distributed splitting may not necessarily be 2- level splitting. 1. Easy for future expansion 2. Relatively small investment 1. Hard for management 2. High maintenance cost ★Huawei recommends centralized splitting; however, for customers with limited investment, distributed splitting is recommended.

29. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Configuration Criteria of Optical Splitting  The overall ratio of the optical splitting shall be based on the bandwidth requirement of the customers and also its total link loss.  ITU-T G.984-1—Gigabit-capable Passive Optical Networks (GPON) recommended that for GPON, the total splitting of an ODN is 1:64.  It also recommended that for GPON, the physical reach- the maximum physical distance between the ONU and the OLT, should not be more than 20km. Page29

30. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solutions Type Splitting Ratio GPON bandwidth Typical application Centralized splitting 1: 8 156M/312M For Mobile Backhaul 1:16 78M/156M For Enterprise/Office, VIP 1:32 39M/78M For Resident, VIP, Enterprise 1:64 19M/39M For Resident Cascading Splitting 1:2 + 1:8 78M/156M For Enterprise/Office, VIP 1:2+1:16 39M/78M For Resident, VIP, Enterprise 1:4+1:8 39M/78M For Resident, VIP, Enterprise 1:4+1:16 19M/39M For Resident 1:8+1:8 19M/39M For Resident 1:2+1:32 19M/39M For Resident Typical GPON: Upstream 1.25Gbps/Downstream 2.5Gbps 03/30/20

31. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page31 Scenario 1 : High-Medium Rise Building characteristic : 1 ） More than 64 units 2 ） With Telecom Equipment Room (TER) at G/F and cable riser Solution 1 One-stage centralized splitting Splitter in ODF at TER Drop wire connected from the splitter port and link to the ATB in the customer premises

32. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page32 Scenario 1 : High-Medium Rise Building Characteristic : 1)More than 64 units 2)With Telecom Equipment Room (TER) at G/F 3)With cable riser Solution 2 One-stage centralized splitting Splitter in ODF at TER Provide vertical blockwiring with fibre division box at appropriate floor Drop wire connected from the fibre division box and link to the ATB in the customer premises

33. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page33 Scenario 1 : High-Medium Rise Building Characteristic : 1)More than 64 units 2)With Telecom Equipment Room at G/F 3)With cable riser Solution 3 Scattered splitting Wall mounted splitter units located at appropriate floors Drop wire connected from the splitter ports and link to the ATB in the customer premises

34. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page34 Scenario 2 : Low rise building Characteristic : 1)Less than 64 units 2)Without Telecom Equipment Room and cable riser Solution Centralized splitting at FDT Provide fibre division box at appropriate floor Fibre cable connected from FDT to each fibre division box Drop wire connected from the division box and link to the ATB in the customer premises

35. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page35 Scenario 3 : Villa Type Houses Characteristic 1)Single Dwelling Unit 2)Without Telecom Equipment Room and cable riser 3)Customers are scattered and no U/G duct route Solution 1 One-stage centralized splitting at FDT FAT installed on aerial pole Use aerial drop wire from FAT connect to SDU

36. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page36 Scenario 3 : Villa Type Houses Characteristic 1)Single Dwelling Unit 2)Without Telecom Equipment Room and cable riser 3)Customers are scattered and no U/G duct route Solution 2 2-stage splitting 1st stage in FDT and 2nd stage in FAT FAT installed on aerial pole Use aerial drop wire from FAT connect to SDU

37. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page37 Scenario 4 : Large nos. of Villa Type Houses + small nos. of low-rise building Solution 1: Install FDT with splitters For SDU, one-stage splitting at FDT For low-rise building, 1st stage splitting at FDT and 2nd stage splitting at FAT inside the building

38. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Splitter solution Page38 Scenario 4 : Large nos. of Villa Type Houses + small nos. of low-rise building Solution 2: Install FDT with splitters For SDU, one-stage splitting at FDT For low-rise building, one-stage splitting at FAT inside the building

40. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Where to Locate OLT?  Different OLT location has different advantages and disadvantages, location selection depends on the reasonable cost of network construction and network development requirements of the operator .  Utilize the long distance coverage feature of PON (20Km) as much as possible. S1: Aggregation site Adv. •Longer distance coverage •Easy for operation and maintenance Disadv. •Need more optical cables S2: CO site Adv. •Medium distance coverage •Easy for management maintenance •Balance between capacity and resources occupation (Plant ,cable and duct) Aggregation layer Outdoor Cabinet CO S3: Outdoor Cabinet Adv. •Save optical cables Disadv. •Difficult for management and maintenance •Shorter distance coverage •Power supply required 03/30/20

41. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Where to Locate the Splitter? Outdoor Cabinet C O S1: Splitter in CO site Adv. •Easy for management maintenance Disadv. •Lots of fiber are needed •Lack of network flexibility •Higher deployment cost S3: Splitter in Outdoor Cabinet Adv. •Good at Network flexibility •Low cost in residential distribution network •Higher utilization rate Disadv. •Need more drop cables Res,CO S4: Splitter in basement Adv. •Save optical cables Disadv. •Network is Complicated •Non-efficient utilization of PON ports •Suitable for high density building S2: Splitter in Res. CO site Adv. •Centralized, easy/flexible to mount •Network is Simplified •Cost saving in density scenario. 03/30/20

42. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Page 42 Where to Locate ODF, FDT,FAT and Closure Abide by the following principles when installing devices such as ODF, FDH, and closure:  Ensure that the selected installation position is available. (Permission from local government and resident owners must be obtained, and the ambient environment must not affect the normal running of devices installed.)  Use as few optical fibers as possible to minimize the overall cost (including the construction cost and maintenance cost).  Ensure that the coverage radius and the maximum differential distance (20 km) meet the requirements. ODF FDT Closure FAT

43. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Page 43 Method of an ODN Design-Equipment Selection FAT series Cable/Closure series Connector series FDT ATB FDT series Optical splitter series Indoor Wall-mounted Outdoor Splitter Indoor FAT Indoor Rack-mounted Outdoor FAT TB/ATB series TB Optical cable Splice Unit Closure Pigtail Adapter Patch cord Mechanical splicer FA connector Flexible optical cable ODF ODF series Integrated Splice & Termination Unit ODF FDT FDT Modular Splitter Integrated splicing and termination unit Cabling unit cable entry unit Base Principles of selecting a device: reserve certain margin for future capacity expansion Huawei's ODN pro ducts

45. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Optical Power Budget Page45 Note:  End to End fiber link loss budget calculation  Class B+ is used for Huawei OLT and ONT product, standard spec as shown in table  Normally 3 db is spare for maintenance margin Table G.984.2 – Classes for optical path loss Class A Class B Class B ＋ Class C Minimum loss 5 dB 10 dB 13 dB 15 dB Maximum loss 20 dB 25 dB 28 dB 30 dB Items Unit Single fibre OLT OLT Mean launched power MIN dBm +1.5 Mean launched power MAX dBm 5 Minimum sensitivity dBm -28 Minimum overload dBm -8 ONU ONU Mean launched power MIN dBm 0.5 Mean launched power MAX dBm 5 Minimum sensitivity dBm -27 Minimum overload dBm -8

46. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Optical Power Budget Total loss of an ODN = fiber attenuation × (length of cable) + splitter attenuation + splice attenuation × (number of splices) + connector attenuation × (number of connectors) + safety margin Page46 Optical Power Budget Fiber Fiber Attenuatio Attenuatio n n Splitter Splitter Attenuatio Attenuatio n n Splice Splice Attenuatio Attenuatio n n Connector Connector Attenuatio Attenuatio n n

48. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Optical Power Calculation Case Study Page48 Optical power attenuation in ODN link No Item Description Optical power attenuation (dB) remark 1 Fiber optical cable (G.652) 1310 nm optical cable (db/km) 0.35 5 1490 nm optical cable (db/km) 0.25 2 Connecting point Fusion splicing point 0.1 12 Adapter connector 0.2 7 FA connector 0.5 0 Mechanical splicing point 0.3 0 3 Splitter unit 1:64 splitter 19.7 0 4 1:32 splitter 17 0 5 1:16 splitter 13.5 0 6 1:8 splitter 10.2 2 7 1:4 splitter 7.2 0 8 1:2 splitter 3.5 0 9 Redundancy redundancy loss 3 E2E Link attenuation ＝ 5×0.35 ＋ 12×0.1 ＋ 7×0.2 ＋ 10.2×2 =24.75dB Attenuation Calculation Mode OLT ODF Closure & 1:8 splitter FAT & 1:8 splitter ATB ONT 0.2 0.2+0.1 0.1+0.2+10.2+0.2+0.1 0.1+0.2 0.2 closure 0.1 0.1+10.2+0.1 0.1+0.2+0.1 TB closure closure closure 0.1 0.1 0.1 Legend adapter connecter splicing Fiber core

51. Copyright © 2013 Huawei Technologies Co., Ltd. All rights reserved. Glossary  FTTx : Fibre to the X  FTTH : Fibre to the Home  FTTO : Fibre to the Office  FTTB : Fibre to the Building  FTTC : Fibre to the Curb  MDU : Multi Dwelling Unit  SDU : Single Dwelling Unit  OLT : Optical Line Terminal Page51  ODN : Optical Fibre Distribution Network  ONU : Optical Network Unit  ODF : Optical Distribution Frame  MSAN : Multi Service Access Network  ITU_T : International Telecom Union-Telecom Sector

52. Thank you www.huawei.com

454022781-ODN-Planning-and-Design-Suggestions-TLF.pdf

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454022781-ODN-Planning-and-Design-Suggestions-TLF.pdf