Funksystem für industrielle Anwendungen – HiFlecs Zukunft der Netze Lübeck, 28.-29. September 2017

Frank Bittner TZI – Universität Bremen

§  Collaborativemanufacturing networks

Industry 4.0 Vision - highly flexible, work-sharing, geographically distributed production

Horizontal Integration Vertical Integration

§  Machines communicate with each other

Source: HP 2

Vertical Integration: Industrial Radio Requirements

Manufacturing Process Automation

Augmented Reality

Latency < 1ms 100 ms 10 ms

Jitter < 1us - -

Reliability (PER) 1e-9 1e-5 1e-5

Data Rate Kbit/s – Mbit/s Kbit/s Mbit/s-Gbit/s

Packet size short short long

Range 10m - 100 m 100 m- 1km 10m - 100m

Massive communications

middle yes no

Determinism strong middle no

Todayswirelesstechnologiesfailtomeetrequirements3

Different BMBF Research Programmes

„reliable wireless communication in industry“

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Reliable wireless communication in industry (ZDKI)

Wesentliche Merkmale Overview of research projects

§  8 autonomous projects for wireless communication

§  Simultaneous accompanying research project

§  Research grant ~ 40. Mio. €

§  Very diverse composition of consortia:

•  Industrial SMEs and corporations

•  Relevant research institutions

•  renowned Applied Universities/Universities

BZKI

PRO WILAN

SBDist

ParSec

Kol

Treu Funk

OWI CELLS

HiFlecs

DEAL

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„Hochperformante, sichere Funktechnologien und deren Systemintegration in zukünftige industrielle Closed-Loop Automatisierungslösungen“

§  Extremely low latency (< 1ms)

§  Extremely high availability and reliability

HiFlecs: Design of an Industrial Radio System

Coordination: Prof. Dr. Armin Dekorsy, University of Bremen

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Requirement Profiles - HiFlecs

Profile A •  Driverless transport of large

goods •  Marriage in vehicle assembly •  Shuttle vehicles in packaging

machines

Profile B •  Industrial plant with

decentralized drive technology

•  Robot cell with product feed and removal of the peripheral axes

•  Storage and retrieval machines or shuttle systems

Profile C •  High bay warehouse •  Robot cells with

interchangeable tools

Parameter A B C Transmission time [ms] 0,15 1,00 0,50 Update time [ms] 5,00 1,00 1,50 Data length [Bit] 1024 400 1600 Packet Loss Rate 5 * 10-7 N/A N/A Consecutive Losses 2 N/A 2 No. of devices 32 1000 100

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Core Technologies

Adaptive PHY/MAC technologies Integrated information security

Coexistence-Management Mapping of distributed application functionality

§  Plug & Trust §  Physical layer security §  Latency optimized encryption

§  Interface between application and radio

§  Dynamic, distributed object model

§  Cognitive spectrum sensing §  Self-regulated coexistence-

management

§  Scalable latency and resource usage §  Use of multicast/broadcast-properties §  Dynamically reconfigurable hardware

HiFlecs Radio

System

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System Architecture, Interfaces, and Channels

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HiFlecs - Controller

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Coexistence Management

Challenge:

•  Fast and reliable classification of active wireless systems in a shared frequencies

Approach:

•  Compressed Sensing based spectrum sensing

•  Multi-layer convolutional neural network

•  100% classification down to -5 dB SNR

HiFlecs

Multi-layer convolutional neural network

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Air Interface

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Challenge: Treating real-time and best-effort traffic efficiently

Desirable: Inherent Broadcast/Multicast support

Idea: Utilization of Hybrid MAC technique, i.e. combination of contention and reservation based MAC techniques

HiFlecs

Quasi Orthogonal Spreading Sequences (QOSS)

Orthogonal Variable Spreading Factor (OVSF)

Air Interface

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HiFlecs - New Waveform

Challenge Problematic scenarios (OFDM): §  Inefficient spectrum usages

(High Out-of-band Emissions) §  Low cost device with low-end power

amplifiers (High PAPR) §  Large CP overhead under channels

with large delay spread

Approach Generalized Frequency Division Multiplexing §  Non-orthogonal

Low PAPR

-40 -30 -20 -10 Center Freq. 10 20 30 40-140

-120

-100

-80

-60

-40

-20

0

20

Frequencies (MHz)PS

D (d

B)

OFDM configuration in 20 MHz modelGFDM w. time domain window

-40 dBr

IEEE 802.11ac spectrum mask

for 20MHz

0 dBr

-20 dBr -28 dBr

Low Out-of-Band Emissions

§  Beneficial for higher order modulation schemes

•  Higher spectral efficiency §  Lower inter-channel interference §  More usable spectrum

GFDM Evaluation

Quelle: proWiLAN

•  GFDM waveform •  Low-complexity GFDM modulator/demodulator •  Improved Schmidl&Cox synchronization

•  Polar Codes •  State-of-the-Art high throughput implementation

Latency optimized SDR Baseband Implementation

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Encryption and Message Authentication

•  Tight integration of encryption (AES) and authentication (CMAC) with baseband

•  Low Latency Cipher Implementation

Physical-Layer Security based message authentication

•  Avoids CMAC overhead, leads to reduced latency

•  Promising authentication accuracy

Security

AES-128Encryption

AES-128Encryption

256BitPayload

256Bit

320Bit

256BitPayload

256Bit

AES-128CMAC(64Bittrunc.)

PHY/MAC&Channel

AES-128CMACCheck

PHYSECAuth.Check

AES-128Decryption

AES-128Decryption

PHY/MAC&Channel

320Bit

256Bit

256Bit

256BitPayload

256BitPayload

256Bit

CSI

HiFlecs

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Transmodul line of a packing machine

•  Wireless data transmission between control module (SPS) and transport modules by HiFlecs

•  Synchronization with delta-robot and linear measurement system via HiFlecs (cycle time 1ms)

Implementation and Demonstration

HiFlecs

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HiFlecs within existing infrastructure

Extension / replacement of wired systems

ZDKI

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ZDKI and 5G – our own view

Task: Extension / replacement of wired systems

5. Mobile Radio Generation (5G)

ZDKI

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TACNET 4.0Hochzuverlässige und echtzeitfähige 5G Vernetzung für Industrie 4.0

5G Vernetzung für die Digitalisierung der IndustrieProduktion, Robotik, Internet der Dinge

20.06.2017 1

Volumen10,33 Mio. EUR (60% Förderanteil)

Laufzeit04/2017 - 03/2020

Verbundkoordinatoren

DFKI, Kaiserslautern Prof. Dr. Hans D. Schotten

und

Nokia Bell Labs, MünchenDr. Peter Rost

Thank you!