1. Baseband Platforms - Architecture
Nokia Open Day 2017
Software Architecture
BTS System Architecture
Advanced BBP Architecture

2. What is baseband? Baseband Layer 3 Layer 2 Layer 1
Radio Frontend
Downlink
Core Network / Internet
Mobility, handover
etc.
Multi-connectivity, cyphering, scheduling etc,
Modulation and coding, precoding
D/A conversion etc.
Up-conversion.
Uplink
Modulation and coding, precoding
A/D conversion etc.
Down-conversion.
Power / synchronization / security / diagnostics / configuration / …
Networking / processing / memory infrastructure
Note that this illustration is highly simplified

3. Who are we? What do we do? Input: Output: Customer requests
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
Base station (BTS) architecture specification
Algorithms / System engineering
Software architecture
BTS System architecture
Technology development
Output:
Novel technology concepts, improved product solutions System architecture and algorithm specification
Technology prototypes

4. Base Station Architecture

5. 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.
Nokia BTS
Uplink
Downlink L3 L2 L1 RF
Encoder
Modulator
Decoder
Demodulator
DFE Tx
DAC
RF Tx
DFE Rx
ADC
RF Rx
RRC
NAS
MAC
RLC
PDCP IP
Power / synchronization / security / diagnostics / configuration / …
Networking / processing / memory infrastructure
What we do:
Design end-to-end architecture
Define product concepts
Create models and specifications (e.g. UML, SysML)
Promote architecture concepts cross organizations

6. Drivers for next generation of BTS products (new target architecture)
Cloud processing L3 L2 L1 RF
Bandwidth x5-100
Massive MIMO
Capacity x10
DFE Tx
DAC
RF Tx
DFE Rx
ADC
RF Rx
Downlink IP
Radio latency x0,1
Encoder
Modulator
DFE Tx
DAC
RF Tx
NAS
RRC
PDCP
RLC
MAC
Uplink
Decoder
Demodulator
DFE Rx
ADC
RF Rx IP
Non-Real Time
Real Time
RF Time

7. Technology development
New generation of products =
New concepts anf features
New requirements
New technologies
New or modified product concepts:
Hardware proof-of-concept
Component/technology/product benchmarking
Development/verification of design tools
What we do:
Technology scouting (SoCs, processors, interfaces, …)
Design of evaluation platforms (hardware design)
Prototype implementations (FPGA, embedded SW)
Collaborate with external vendors

8. Algorithms & System Engineering

9. 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
Internet of Things
LTE Slim carrier
NB-IoT 3.75 kHz
Automotive
Cities
Health
Industry
Energy
Base station architecture
LTE/5G improved fronthaul interface design

10. BBP Architecture Algorithms Team – What We Do

11. BBP Architecture Algorithms Team – Who We Work With
LTE / 5G System Design and Architecture teams
Nokia Bell Labs Research
Implementation teams (e.g. WMP FDD UL PHY)
Baseband platform architecture algorithms Wroclaw
Nokia 3GPP Delegates
Integration and verification teams
RF Engineering
System-on-chip / FPGA implementation teams
Customer interaction