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© Copyright 2019 Xilinx Faisal Dada Principal Architect & Director Strategic Marketing, Transport & Access Communications Converged Networks for 5G RAN and Broadband Services
© Copyright 2019 Xilinx
Faisal Dada
Principal Architect & Director Strategic Marketing,
Transport & Access Communications
Converged Networks for 5G
RAN and Broadband Services
© Copyright 2019 Xilinx>> 2
Building the Adaptable, Intelligent World5G Enabled Flexible Infrastructure & Converged Network
© Copyright 2019 Xilinx
The Evolving Mobile Network
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Deployed Distributed RAN Architecture
˃ Today most mobile sites have localized baseband processing & networking
Traditional networking gear is used (Packet Routing; OTN; Legacy Interfaces)
˃ Radio sites require power backup, environmental conditioning & large footprint
© Copyright 2019 Xilinx
Evolution to Centralized RAN Architecture
˃ DRAN Distributed Architecture with Radios and Baseband being co-located
CPRI interface is local to the site
˃ CRAN Centralizes the Baseband processing
Splits the Radio and Baseband, the CPRI interface needs to be transported to the site
CPRI Transport can use point to point gray optics; passive WDM; Muxponders etc.
DRAN CRAN
CPRI Transport:• Gray
• Passive WD
• Mux-ponding
Centralized
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Why Centralize
˃ This debate has happened over and over again but some key points are:
˃ Centralized location for Baseband networking gear:
Lower Realestate costs
Easier logistic and regulatory process
Single location for Power, Backup & Environmental concerns
Optimized Mechanical requirements
Easy upgrading & maintenance
˃ Less complexity at the tower:
More Radios at a tower
Sharing towers with other providers reduces cost
˃ Pooling of resources to redirect them to radios as load migrates
˃ ……..
>> 6
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Evolving to 5G
˃ 4G LTE Services are still centralized (CRAN)
˃ 5G NR split the PHY to reduce the transport requirements
Can use eCPRI with ORAN as an example
Allows the baseband processing to be virtualized with x86 and acceleration cards
˃ Goal: Use the existing transport fiber
Two different traffic profiles CPRI and Ethernet
Traffic is increased
>> 7
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Realistic Scenario
˃ Radio sites may already have legacy equipment that requires backhaul
˃ Access services may be delivered to the same locations
>> 8
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Converged Access Network
˃ Single network or fiber to provide all of the services to the remote locations
>> 9
Remotes Sites Telco DC
Converged Access
Network
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Converged Access Network
© Copyright 2019 Xilinx
Converged Access Networks
˃ Multiple Technologies to address Converged Networks
Rolling out more fiber & using more WDM are costly & restrictive options
Network Slicing is an alternative approach to address convergence
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Designing – Converged Access NetworksOptical Interface required for each service
• Rolling out more fiber
• Managing wavelengths and optics
• Not using the highest rates (100G etc)
Logic processing required
• Different services over one Interface (ethernet)
• Single connection gray or coloured
• Leverage existing fiber between the facilities
© Copyright 2019 Xilinx
xHaul & Converged Access Networks
˃ xHaul gateway function allows all services to be carried across a single Interface
Ethernet, FlexE, OTN
˃ High speed interfaces like 100GE eg. LR4 optics for 10kms Single Fiber Pair
˃ Use a transport network for further cost optimization >> 13
Netw
ork
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Xilinx xHaul Gateways
˃ Xilinx can provide xHaul Gateways that address multiple functions
Gateway can be adapted to the required need using programmability
>> 14
C-RAN
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Why Xilinx for Converged xHaul Networks
˃ Xilinx provides path to single Converged Gateway Function
RoE for Structure agnostic CPRI transport with LCA mode saving 20% BW compared to others
TSN with pre-emption for express traffic
High precision sub-ns accurate timestamp for 1588
˃ Xilinx provides a path to virtualize baseband processing for existing Radios
vBBU for LTE with a Option 7.2x split as defined by ORAN (O-DU for 4G LTE)
LO PHY Processing in the transport box closer to the 4G LTE Radios
Reduced Network capacity while maintaining existing radio infrastructure
˃ Multiple connectivity capabilities
Ethernet, OTN, PON, FlexE etc.
>> 15
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Converged Gateway for the Converged Network
˃ A single FPGA provides Converged Gateway function in different form factors
>> 16
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Converged Gateway
Flexible Access Infrastructure
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Addressing other Access Usecases
˃ Access technologies like PON may also be provided by service provider
˃ PON may also be used as a mechanism for providing xHaul services
>> 18
xPON AccessUsing PON
For xHAUL
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FPGA for xPON & PON based xHaul
˃ Implementation for different Access scenarios in FPGA
>> 19
Simplified xPON
Implementation on
FPGA
Transport of
xHAUL on PON
Networks
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A Highly Scalable Approach
˃ Flexible HW that adapts to deployment
>> 20
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Flexible Infrastructure
˃ Adaptable & Flexible Hardware for a evolving Intrastructure
>> 21
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Summary
© Copyright 2019 Xilinx>> 23
Building the Adaptable, Intelligent World5G Enabled Flexible Infrastructure & Converged Network
© Copyright 2019 Xilinx
Demonstrating the Flexible Network
>> 24
VC
U1
41
EXFO
1 x 100G FlexE 1 x 100G FlexE
Edge &
Core
Netw
ork
10GE
EXFO
25GE
eCPRI
10G
E
(CP
RI
RoE
)
10G
E (C
PR
IR
oE
)
25GE
xRAN
ZC
U1
02
CPRI RoE
TSN
ZC
U1
02
CPRI RoE
TSN
ZC
U1
02VOLTHA
XGSPON
OLT
ZC
U1
02
XGSPON
ONU
XGSPON
ONU
EXFO
EXFO EXFO
User Emulation
Baseband Emulation
4G LTE
RADIO Emulation
4G LTE
vBBU
Emulation
5G NR
Edge
Access
Emulation
Access
Netw
ork
s
© Copyright 2019 Xilinx
Thank You
>> 25
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Adaptable.
Intelligent.
