Contact: Heejin Choi
Email: hjchoi2@etri.re.kr
Phone: +82. 42. 860. 4946
PON(Passive Optical
Network) System
For radio wire optical access network
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TECHNOLOGY BRIEF
▣ Technology Overview
PON(Passive Optical Network) System
Core technology of optical access network for build mobile communication back
haul/ front haul and wire access network by using optical fiber. This 25G-EPON
MAC optical transceiver technology, real time OFDM-PON modem technology,
CPRI data compression technology for front haul section’s transmission capacity
reduction allows maximum 25Gb/s of transmission speed.
25G-EPON, MAC, Optical Transceiver, OFDM Optical Modem,
CPRI, Data Compression
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□ Keywords
□ TRL
Technology Classification Code
Sector
Sub Sector
Industry
Network
System
Access Network
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TECHNOLOGY BRIEF
PON(Passive Optical Network) System
▶ Technical details
• 25G-EPON technology : As a technology of 25G-EPON OLT/ONU MAC and
optical transceiver, provides minimum data transfer speed of 25.78125Gb/s
and maximum of 10.3125Gb/s
• OFDM optical modem : Supply OFDM modem and optical transceiver
technology which perform physical layer function in OLT of OFDM-PON
system and ONU
• CPRI compress FPGA technology : Supply VHDL coding type and operations
control technology for EVM board. It allows Up-down Sampling
compression, Non-linear Quantization compression, Block Scaling
compression and Partial-bit Sampling compression technology to realize in
FPGA.
▶ General/Business/Back haul/Front haul network
• Apply to mobile communication network such as mobile communication
back haul/front haul
• Apply to a wide area access, business subscriber and optical transmission
field in data center
• Apply to separated base station using CPRI interface
• Apply to separated base station using OBSAI interface
• Apply to digital optical repeater section
▣ Technology Description
▣ Application Fields
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▶ Advantages and features of this technology
- OFDM optical modem technology is OFDM FPGA technology that allows high-
speed signal processing. It has high spectrum efficiency by using high-speed
parallel technology and 64QAM OFDM signal modem processing technology
that enables 10Gb/s real time processing.
- CPRI compression technology includes Block Scaling technology, known as IQ
compression technology among CPRI data, Non-linear Quantization technology
and self-developed Partial-bit Sampling technology. It provides Up-Down
sampling by compression technology.
- Below the 0.1% EVM for 20km transmit, under 5µsec for additional delay time
▶ Predominance of this technology
- Block Scaling compression technology
- Non-linear Quantization technology
- EVM & additional delay characteristics using FPGA logic
- Use as core technology for increase capacity and distance of next generation
optical access network.
- It can reduce OPEX/CAPEX investment cost and is needed for increase of
LTE/LTE-A traffic.
▣ Outstanding Features
▣ IPR Status
Apply 2 case of domestic patent
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• In 2014, ETRI developed optic
module and MAC technology for
NG-PON2 optical access network.
This technology accommodates 4
channels with speed of 10Gbps,
and its system capacity is 40Gbps.
• In Jun 2014, SKT developed CPRI
compression technology with
Ericsson. This technology reduced
mobile front haul transfer
capacity between DU-RU to 50%.
• In Dec, 2014, regardless of
existing CPRI compression
technology, SKT separated mobile
access PHY function to RU and
DU section with NOKIA-SIEMENS.
It reduced transfer capacity of
mobile front haul to 25%.
• By researching digital signal
process function realization
technology which is core factor of
OFDMA-PON since 2009, Bangor
University in England realized
optical modem of 11.25Gb/s
OFDM for the first time.
• ETSI ORI legislated the standard
including requirements and IQ
data algorithm about CPRI
compression technology in Octm
2014.
• Denmark Comcores realized IQ
data compression technology that
specified at ORI release 4 and sold
in IP form.
- Technology standardization of NG-EPON, a next generation EPON
technology, was started at IEEE802.3 since 2015, research of associated
candidate technologies are in its beginning stages.
- ITU-T completed NG-PON2 standardization, and modulation systems
such as OFDM are debated to increase transfer speed and distance per
wavelength as a next generation optical access network.
- Heavy increase of data between separated base station because of
LTE/LTE-A traffic capacity increase.
- ETSI ORI(Open Radio equipment Interface), international standard,
standardized CPRI data compression technology.
□ Korea
□ Global
▣ Technology Trend
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기술수요
적용처
Application
Industry
PON based optical
access network
business or equipment
development business
FTTH network, mobile
back haul/front haul
▶ International Vendors
• Huawei, ZTE, ALU, Ericsson
- Transfer speed of optical access network transceiver is showing tenfold
increase of speed over ten years.
- GPON and EPON evolved into XG-PON and 10G-EPON respectively, and
also are under standadization to NG-PON2 and 100G-EPON.
- While Ericsson comprises 1st position in mobile communication
equipment market based on 2014, Chinese vendors are recording
comparable sales with Ericsson.
▶ Domestic Vendors
• DASAN Networks, Ubiquoss, HFR
▣ M arket Trend
□ Market Leaders
□ Technology Demand
Year
2015
2016
2017
2018
2019
Market size
2,726
3,107
3,580
4,097
4,702
▶ Global market size of PON equipment and wireless back haul
equipment (unit: billion dollars)
▶ Major vendors and market trend
• Currently DASAN Networks, Ubiquoss and Tellion are producing optical
subscriber equipment, but the global market share is less than 5 percent.
• Since 2013, tellion is pushing ahead the development of NG-PON2 system.
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•
25G-EPON MAC/optical transceiver technology
- 25G-EPON OLT MAC FPGA technology
- 25G_EPON ONU MAC FPGA technology
- 25G-EPON optical transceiver technology
- Source code, detailed design description, other technical documents
•
10Gb/s real time process OFDM optical modem FPGA technology
- HDL source and development environment for realization of OFDM optical modem
function
- circuit design technology of 10Gb/s real time process OFDM optical modem
- Source code, detailed design description, other technical documents
•
CPRI compression FPGA technology
- CPRI compression technology requirement definition
- CPRI compression technology structure specification
- CPRI compression technology FPGA realization manual
- CPRI compression technology test procedure and results
- CPRI compression technology MATLAB file and MATLAB development environment fie
- CPRI compression technology VHDL file and Xilinx development environment file
•
CPRI compression technology chip management, control technology
- Xilinx development environment file and VHDL file for CPRI Framer/Deframer matching
- CPRI compression technology chip management, control C file and SDK development
environment file
▶ Expected application products
• 100G-EPON system
• OFDM-PON system
• DU-RU separated base station equipment
• Digital optical repeater equipment
▶ Expected effects
• Apply to broadband mobile communication infra(back haul, front haul)
providing technology
• Provide high-speed internet service(more than 10Gb/s speed per cable) to
subscriber
• Improve competitiveness of domestic system price and get import-
substituting effect by CPRI compression technology that can be used to
domestic mobile communication equipment company
• Since it includes worldwide standard technology, domestic companies can try
overseas expansion by localization
▣ Applications and Effects
▣ Scope of Technology Transfer
