2 ODN Design
Transcript of 2 ODN Design
-
8/12/2019 2 ODN Design
1/46
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
Huawei Confidential
Security Level:2014/5/30
ODN Design
Prerequisites: The design area must be provided.
The detailed survey must be complete.
-
8/12/2019 2 ODN Design
2/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 3
This course is intended for beginners of an ODN design.
After completing this course, you should be able to:
Know about types of ODN solutions
Know about the basic flow of an ODN design
Master basic methods of an ODN design
Understand key points of an ODN design
-
8/12/2019 2 ODN Design
3/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 4
ODN Solution
Prerequisites of an ODN Design
Flow of an ODN Design
Method of an ODN Design
Principles of an ODN Design
Key Point of an ODN Design
-
8/12/2019 2 ODN Design
4/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 5
ODN Solution: FTTC
Copper line
Optical fiber
GPON
Center office
Curb Home
< 1000m3- 5 km
CPE
Outdoor cabinet
ADSL2+
ADSL2+/VDSL2/
POTS
CPE
POTS
GPON
CPE
ADSL2+/VDSL2/
ADSL2+/VDSL2/
Fiber
Fiber
-
8/12/2019 2 ODN Design
5/46
-
8/12/2019 2 ODN Design
6/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 7
ODN Solution: FTTH
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
-
8/12/2019 2 ODN Design
7/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 8
ODN Solution
Prerequisites of an ODN Design
Flow of an ODN Design
Method of an ODN Design
Principles of an ODN Design
Key Point of an ODN Design
-
8/12/2019 2 ODN Design
8/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 9
Prerequisites of an ODN Design
Contents of Work:
Mainly obtains the necessary information and documents for an OND design.
Survey report
Drawings
Design standards confirmed with customer
Software for design, such as Google Earth, Auto CAD, and Microstation
-
8/12/2019 2 ODN Design
9/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 10
Prerequisites of an ODN Design
Survey report
Information about civil work
Information about buildings
User information
Drawings
General topographical map for the planned area
(government)
Sub-area division layout (government)
Communication pipe layout (customer)
Layout of data center, telecommunications rooms
of backbone node, and center offices
(customer/important)
Layout of backbone optical cables and routing
(customer)
Floor plan of the community (resident owner)
Silo and telecom riser layout (resident owner)
Diagram for integrated cable routing inside the
building (resident owner)
Drawings are hard to obtain, so a thorough
survey should be performed for obtaining more
detailed information.
-
8/12/2019 2 ODN Design
10/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 11
ODN Solution
Prerequisites of an ODN Design
Flow of an ODN Design
Method of an ODN Design
Principles of an ODN Design
Key Point of an ODN Design
-
8/12/2019 2 ODN Design
11/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 12
Input:
Survey
information
Customerrequirement
confirmation
Output:
FFTX solution
Splitting solution
Input:
Customer
requirementSolution
Civil work
routing
Output:
BOQ
Input:
Survey information
Communication with
customersOutput:
User bandwidth
Capacity estimation
Flow of an ODN Design
Solution
SelectionCustomer Requirement
ConfirmationEquipment
Selection
Input:
Survey
informationSolution
Output:
optical cables
route
Civil work route
Output
ODN topology
ODN design
drawingDocuments:
BOQ and ICMS
Route
Selection
-
8/12/2019 2 ODN Design
12/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 13
ODN Solution
Prerequisites of an ODN Design
Flow of an ODN Design
Method of an ODN Design
Principles of an ODN Design
Key Point of an ODN Design
-
8/12/2019 2 ODN Design
13/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 14
Method of an ODN DesignBandwidth
Requirements of Typical Services
VoIP, videotelephony and
videoconference
Internet Application
Additional TV channels (i.e.
2 HD DTV)
HD Digital TV
SD Digital TV
On-line Gaming
Music on demand,
multimedia contents
10 Mbps
20 Mbps
3 Mbps
1 Mbps
2 Mbps
Video
1 MbpsVoice
2 MbpsData
BandwidthService
In the above table, bandwidth requirements of the current typical services are listed. Bandwidth of each user is
determined by user type and negotiation with customers, and then by considering the survey information of
number of users, the total bandwidth (capacity) and split ratio can be determined.
http://www.consumer.philips.com/consumer/catalog/catalog.jsp?fhquery=fh_secondid%3D42pf7320a_37_us_consumer%26fh_view%3Ddetail%26fh_location%3D%2F%2Fconsumer%2Fen_US%2Fcategories%3Ccatalog_us_consumer%2Fcategories%3C%7Btv_gr_us_consumer%7D&productId=42PF7320A_37_US_CONSUMER&activeCategory=TV_GR_US_CONSUMER&fredhopperpage=detail.jsp&language=en&country=US&catalogType=CONSUMER&proxybuster=3QJMOD1LWJ0T3J0RMRESHQVHKFSEKI5P -
8/12/2019 2 ODN Design
14/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 15
Method of an ODN Design-Solution Confirmation
Solution Type Application Areas Advantages
FTTC
1. Communities and commercial buildings that are not
constructed Permission of entry to the
household need not be
obtained, and construction
risks are reduced.
2. Certain new communities
3. Certain communities with multi-story building that
have been constructed
FTTB
1. Commercial buildings and government buildings 1. Permission of entry to the
household need not be
obtained.
2. CAPEX is reduced.2. Apartments with rich copper line resources
FTTH
1. Communities with multi-story buildings (areas where
permission of entry to the household is easy to obtain)
The real FTTH is achieved.2. Commercial buildings and high-rise apartments with
deficient copper line resources.
3. Majority of villas
A proper solution is determined after taking into consideration the construction difficulty (including obtaining the
permission of entry to the household) and investment budget of customers.
-
8/12/2019 2 ODN Design
15/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 16
CO
Centralized splitting
Method of an ODN Design-Splitting Solution
Confirmation
Optical splitter
Optical splitter
Distributed splitting
CO
This optical cable is alternative in
straight through or splitting once
before.
-
8/12/2019 2 ODN Design
16/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 17
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.
-
8/12/2019 2 ODN Design
17/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 18
Method of an ODN Design-Protection Scheme
Type A feeder cable protection
IFpon
IFpon
IFpon
1:N optical splitterOLT
ONU#1
ONU#NBackup opticalcable
Protection area
Type B OLT ports backup
IFpon
IFpon
IFpon
2:N optical splitterOLT
ONU#1
ONU#NIFpon
Protection area
Type A
The equipment is not configured with
the backup function.
If the backbone optical fiber is faulty,switch to the backup optical fiber
manually.
Services are interrupted, and the
interrupt duration is determined by the
cable recovery duration.
If the cable to the user is faulty,
services are interrupted and backup
operation cannot be performed.
Type B
The OLT provides two GPON ports.
Protection is implemented only in the
case that the system automatically
switches to the standby system when
the backbone optical fiber is faulty. This
implements the protection for the
backbone optical fiber.
Only the optical fiber between the OLT
and the ONU, and the OLT board
hardware are protected.
-
8/12/2019 2 ODN Design
18/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 19
Method of an ODN Design-Protection Scheme
IFpon
IFpon
IFpon
2:N optical splitterOLT
ONU#
1
ONU#
N
Type C full protection
IFpon
IFpon
IFpon2:N optical
splitter
Full protection
IFpon
IFpon
IFpon
2:N optical
splitterOL
T
ONU
#1
ONU
#N
Type D hybrid
protection
IFpon
IFpon
2:N optical
splitter
1:2 optical
splitter
1:2 optical
splitter
Full protection
Type C
Protection is the type of the optical fiber
switchover on the entire network. Two different
routes exist between the OLT and the ONU. This
ensures line recovery from various faults.
When the ONUs active PON port or the
subscriber line is faulty, the ONU automatically
switches services to the standby PON port. Then,
services are transmitted through the standby line
and the OLTs standby port. In this manner,
services are not interrupted.
Type D
The OLT provides two ports. The ONU can
use either of the PON ports.
Two routes exist between the OLT and the
ONU to protect the entire network, and
services can automatically be switched to the
backup route in case of a fault.
This protection scheme is difficult to
implement and is of high cost.
-
8/12/2019 2 ODN Design
19/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 20
Method of an ODN Design-Dual-homing Protection
Mode for the OLT
ONT #1
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
-
8/12/2019 2 ODN Design
20/46
-
8/12/2019 2 ODN Design
21/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 22
Method of an ODN Design-Routing Selection
(Without Use of the Existing Pipes)
FTTX solution
Splitting solution Optical cable
routing
Survey information
Survey information
Civil work routing
Routing design should take the following into account: whether itfacilitates (special topography such as a river or a bridge)
construction; whether it is easy to obtain the construction
permission; whether the existing pipes can be re-used; whether
pipes need to be leased.
-
8/12/2019 2 ODN Design
22/46
f O S
-
8/12/2019 2 ODN Design
23/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 24
Method of an ODN Design-Equipment Selection
FATseries
Cable/Closure
series
Connector
series
FDT
ATB
FDT
series
Optical
spl i t ter
series
Indoor Wall-mounted Outdoor Splitter
Indoor FAT
Indoor Rack-mounted
Outdoor FAT
TB/ATB
seriesTB
Optical cable
Splice Unit
Closure
Pigtail Adapter Patch cord Mechanical splicer FA connector
Flexible optical
cable
ODFODF
series
Integrated Splice &
Termination UnitODF
FDT FDT
Modular Splitter
Integrated splicing
and termination
unit
Cabling unitcable entry unit Base
Principles of selecting a device: reserve certain margin for future capacity expansion
Huawei's
ODN
products
-
8/12/2019 2 ODN Design
24/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 25
Method of an ODN Design-Equipment SelectionTo select a device, consider the following:
Equipment functions Equipment features (such as humidity and temperature)
Customers may not purchase Huawei's equipment. In this case, equipment is selected
according to ODN design.
For example, customers require a device (similar to Huawei's FDT) that has the following
functions :
Fusion splicing and distribution cables functions.
More than 500 lines.
Adaptation to the environment higher than 40C.
The cabinet can be opened and closed 1000 times.
According to above requirements, request customers to specify an equipment vendor to
check whether there is a device meeting these requirements.If there is no such a device,
check whether there are similar devices. If the similar devices do not exist, check whether
such a device can be customized (involving price) or modify the ODN design.
Generally, the equipment vendor can
provide the required devices and the
ODN design need not be modified.
-
8/12/2019 2 ODN Design
25/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 26
ODN Solution
Prerequisites of an ODN Design
Flow of an ODN Design
Method of an ODN Design
Principles of an ODN Design
Key Point of an ODN Design
-
8/12/2019 2 ODN Design
26/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 27
Principles of an ODN Design
The ODN design is mainly used to instruct construction. Therefore, the obtainment
of permission of road rights and entry to the household is very important, which
affects construction process and cost.
A major principle of an ODN design is to easily obtain construction permission or to
try not to involve the construction permission in designing a route.
Easy to obtain construction permission
How much is the investment? ---According to customers' budget, design different
ODN solutions.
How long does the construction last? ---Customers require the construction is
complete as quick as possible and then services can be provisioned for profits.
Therefore, construction difficulties should be considered in designing an ODN
solution.
Meets customers' requirements
-
8/12/2019 2 ODN Design
27/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 28
ODN Solution
Prerequisites of an ODN Design
Flow of an ODN Design
Method of an ODN Design
Principles of an ODN Design
Key Point of an ODN Design
-
8/12/2019 2 ODN Design
28/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 29
Key Points of an ODN Design- Link Loss
ITU-T G984.2 defines the range of class B+ link loss from the OLT to the ONU as 13 dB to 28 dB.
The actual power budget is 24.05 dB to 32.5dB.
In the link budget, 4 dB to 5 dB are reserved for future maintenance.
Sometimes
0.3 or 0.4Name Average Loss (dB)
Connection Point Adapter 0.2
Mechanical splicer 0.2
Fusion splicing point 0.1
Optical splitter 1:64 19.7
1:32 16.5
1:16 13.5
1:8 10.5
1:4 7.2
1:2 3.2
Optical cable (G.652) 1310 nm 0.35/km
1490 nm 0.25/km
1550 nm 0.21/km
-
8/12/2019 2 ODN Design
29/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 30
Key Points of an ODN Design-Link Loss
Splitter
Splitter unit
Patch
cord CableCable
FDT frame
Integrated splicing &
termination unitIntegrated splicing &
termination unit
Pigtail
PigtailPatchcord
Splitter
Splitter unit
PigtailCable
Integrated splicing & termination unitOLT
Patch cordPatch Cord
Cabling unitCable entry unit
Adapter
Splicing JointAdapter Patch cord Pigtail cord
The left figure shows
the connection from
the OLT to the ODF.
Here, the ODF
contains an optical
splitter.
The left figure shows
the connection from
the optical cable to
the FDT. Here, the
FDT contains anoptical splitter.
-
8/12/2019 2 ODN Design
30/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 31
Key Points of an ODN Design-Link Loss
Connection from the optical
cable to the FAT
Cable
SpliceCable
FAT
Cable
TB
Connection from the
optical cable to the TB
Cable
ATBONU
Splicing JointAdapter Patch cord Pigtail cord
Connection from the optical cable
to the ATB and to the ONU
-
8/12/2019 2 ODN Design
31/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 32
Key Points of an ODN Design-Link Loss
Loss Type Quantity Average Loss
(dB)
Total Average Loss (dB)
1:64 1:32 1:16 1:8 1:4 1:2
Optical cable (G.652)(km) 20 0.35 7 7 7 7 7 7
Adapter 9 0.2 1.8 1.8 1.8 1.8 1.8 1.8
Mechanical splicer 0 0.2 0 0 0 0 0 0
Fusion splicer 6 0.1 0.6 0.6 0.6 0.6 0.6 0.6
Opticalsplitter
1:64 1 19.7 19.7
1:32 1 16.5 16.5
1:16 1 13.5 13.5
1:8 1 10.5 10.5
1:4 1 7.2 7.2
1:2 1 3.2 3.2
Total average loss of different branch (dB) 29.1 25.9 22.9 19.9 16.6 12.6
This table presents the calculation of link loss with 1-level optical splitting (splitting at FDT). In
the link, no mechanical splicing is used for cable connection.
K P i t f ODN D i D t i i
-
8/12/2019 2 ODN Design
32/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 33
Key Points of an ODN Design-Determining
Optical Fiber Cores (OFCs)The number of OFCs is mainly determined by the subscriber quantity.
The OFC of the drop cable is determined by the subscriber quantity of each
apartment (house).
The OFC of the distribution cable is determined by the subscriber quantity in an
area or building.
The OFC of the feeder cable is determined by the total subscriber cables in the
planned area.
OFC Selection Guide:
-
8/12/2019 2 ODN Design
33/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 34
FDT can be located
here.
The mainstream FDT of Huawei supports 512 subscribers. In the planning, one FDT is
planned to cover 350 to 450 subscribers, with certain margin left for future capacity
expansion.
The FDT is located outdoors; therefore, the position of FDT installation is to choose that
there is no need or it is easy to gain permission for FDT installation, and also FDT
installation does not affect ambient traffic.
The FDT is preferred to be installed beside the
original copper distribution terminal.
Key Points of an ODN Design-Determining FDT
Location
-
8/12/2019 2 ODN Design
34/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 35
Example-ODN Design for Customer A
Context
1. Customer A provides an area of 2.4 km2(marked in red).
2. Customer A provides the POP point (CO).
3. No pipe resources are available.
In this context, Huawei needs to provide an ODN design.
Design Input Survey Information (Subscriber Model)
-
8/12/2019 2 ODN Design
35/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 36
Design Input-Survey Information (Subscriber Model)
No. Subscriber TypeBuilding
Quantity
Subscriber
Quantity per
Building
Terminal
Quantity per
Building
Terminal
QuantityChosen ONT
1 Hotel 6 - 1 6 SRG
2 Bank 2 - 1 2 SRG
3 Hospital 1 - 1 1 SRG
4 School building 12 - 1 12 MA5620G
5 MALL 9 90 2 18 OT928
6 Apartment (FTTH) 15 30 30 450 HG810/HG850
7 Business building (FTTH) 17 8 8 136 OT928/OT925
8Mixed business building
(FTTH)17 90+30 32 544
HG850a/HG866 for
residential;
MA5620G for business
9 Apartment (FTTB) 16 30 1 16 MA5651
10Mixed business building
(FTTB for the residential)63 90+30 3 189
MA5651for residential;
MA5620G for business
Total 158 - - 1,374 -
-
8/12/2019 2 ODN Design
36/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 37
Subscriber/Service Type
Service type
Voice
Data
IPTV
Subscriber type
Residential subscribers
Business subscribers
VIP subscribersFor details, see page 14. Assuming thatsubscriber services are provisioned at the
same time, the 26 Mbit/s bandwidth is
required. Therefore, 1:64 split ratio meets
the service requirements.
-
8/12/2019 2 ODN Design
37/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 38
Sub-FDT Division
Part 1 Part 2 Part 3 Part 4
Subscriber
Quantity261 489 434 190
FDT No. FDT-1 FDT-2 FDT-3 FDT-4
According to the survey information about future service expectation, four
sub-FDT areas are divided.
-
8/12/2019 2 ODN Design
38/46
-
8/12/2019 2 ODN Design
39/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 40
Compared with solution 1 (adopting one optical cable), solution 2
(adopting two feeder optical cables) requires higher cost (doubled
feeder cables and pipes) but has no obvious advantage.
Dual-homing Protection (Solution 2)
Closure
FDT
48-core feeder cable
24-core optical cable
ODF
(S )
-
8/12/2019 2 ODN Design
40/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 41
In this solution, the cost is higher, as the optical cables, pipes,
and trenches are doubled.
Protect the feeder cable and PON ports
Dual-homing Protection (Solution 3)
Closure
FDT
48-core feeder cable
24-core optical cable
ODF
-
8/12/2019 2 ODN Design
41/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 42
Example-ODN Topology
This figure shows the
ODN topology
designed in the initial
planning, without
considering the dual-
homing protection.
-
8/12/2019 2 ODN Design
42/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 43
Example-drawing of ODN Design
Note: This drawing shows the routing of pipes, feeder cables, and distribution
cables of FDT1, and does not show the routing of the other three FDTs.
-
8/12/2019 2 ODN Design
43/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 44
Example-drawing of ODN Design
-
8/12/2019 2 ODN Design
44/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 45
Example-BOQ
The bill of quantity
(BOQ) template can be
slightly changed
according to different
customer' requirements.
-
8/12/2019 2 ODN Design
45/46
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 46
Example-ICMS
The integrated customer management system (ICMS)
is an ODN routing table from the CO to the ONU.
-
8/12/2019 2 ODN Design
46/46
Thanks!
www. Huawei. com