Baseband Platforms
- Architecture
Nokia Open Day 2017
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Software Architecture
BTS System Architecture
Advanced BBP Architecture
© 2017 Nokia
What is baseband?
Baseband
Uplink
Core
Network /
Internet
Downlink
Layer 3
Layer 2
Mobility,
handover
etc.
Layer 1
Multiconnectivity,
cyphering,
scheduling
etc,
Radio Frontend
Modulation
and coding,
precoding
D/A
conversion
etc.
Upconversion
.
Modulation
and coding,
precoding
A/D
conversion
etc.
Downconversion
.
Power / synchronization / security / diagnostics / configuration / …
Networking / processing / memory infrastructure
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© 2017 Nokia
Note that this illustration is highly simplified
Who are we? What do we do?
Baseband Platform (BBP) Architecture is resposible for creating concepts and solutions for Nokia’s
future base station (BTS) products. We are at the front of new product creation, defining goals and
coordinating efforts of multiple other teams.
Input:
• Customer
requests
• Technology
development
• Corporate /
product strategy
• Standardization
• Disruptive
concepts from
Nokia Bell Labs
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© 2017 Nokia
Base station (BTS) architecture specification
Software
architecture
Algorithms /
System engineering
BTS System
architecture
Technology
development
Output:
• Novel technology
concepts,
improved product
solutions System
architecture and
algorithm
specification
• Technology
prototypes
Base Station Architecture
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© 2017 Nokia
What is BTS system architecture?
BTS is not a standalone device. It is part of a telecom system.
It also has rich internal structure.
Purpose of the BTS System Architecture is to
manage the BTS design sutch that it deliveres the
external and internal functions with respect to the
defined requirements and network concepts.
RF Tx
RF Rx
ADC
DFE
Rx
Demodulator
• Design end-to-end architecture
• Define product concepts
• Create models and specifications (e.g. UML, SysML)
Power / synchronization / security / diagnostics / configuration / …
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DAC
DFE
Tx
Modulator
What we do:
MAC
RLC
PDCP
RRC
Encoder
RF
Decoder
IP
Uplink
L1
IP
L2
NAS
Downlin
k
L3
Nokia BTS
© 2017 Nokia Networking / processing / memory infrastructure
• Promote architecture concepts cross organizations
Drivers for next generation of BTS products (new target architecture)
RF Time
RF Tx
RF Tx
RF Tx
RF Tx
DAC
DAC
DAC
DAC
Massive MIMO
RF Rx
RF Rx
RF Rx
RF Rx
ADC
ADC
ADC
ADC
DFE Rx
DFE Rx
DFE Rx
DFE Rx
Demodulator
Radio latency x0,1
Decoder
Real Time
Modulator
Encoder
MAC
RLC
PDCP
IP
© 2017 Nokia
RF
Bandwidth x5-100
DFE Tx
DFE Tx
DFE Tx
DFE Tx
L1
Capacity x10
RRC
NAS
Downlink
Uplink
Non-Real Time
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L2
IP
L3
Cloud processing
Technology development
New generation of products =
New or modified product concepts:
+
+
+
•
•
•
New concepts anf features
New requirements
New technologies
What we do:
• Technology scouting (SoCs, processors, interfaces, …)
• Design of evaluation platforms (hardware design)
• Prototype implementations (FPGA, embedded SW)
• Collaborate with external vendors
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© 2017 Nokia
Hardware proof-of-concept
Component/technology/product benchmarking
Development/verification of design tools
Algorithms &
System
Engineering
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© 2017 Nokia
BBP Architecture Algorithms Team – Key Topics Covered
5G MAC solutions for
interference management
in dynamic TDD
• Multi-cell RRM
• Multi-cell rank
adaptation,
interference
cancelation etc.
Massive MIMO
• Channel estimation
• Channel feedback
• UL/DL
beamforming
Automotive
Health
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Cities
Industry
© Nokia 2015
Internet of Things
• LTE Slim
carrier
• NB-IoT 3.75
kHz
Energy
Nokia CONFIDENTIAL
Base station
architecture
LTE/5G improved
fronthaul
interface design
BBP Architecture Algorithms Team – What We Do
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© Nokia 2015
Nokia CONFIDENTIAL
BBP Architecture Algorithms Team – Who We Work With
Nokia Bell Labs
Research
LTE / 5G System
Design and
Architecture
teams
Baseband platform
architecture
algorithms Wroclaw
Nokia 3GPP
Delegates
RF Engineering
Customer
interaction
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© Nokia 2015
Nokia CONFIDENTIAL
Implementation
teams (e.g. WMP
FDD UL PHY)
Integration and
verification teams
System-on-chip /
FPGA
implementation
teams