31/Aug/2007 Session VI: Network Technology Trends Industrial Ethernet architectures to provide QoS...

31/Aug/2007Session VI: Network Technology Trends

Industrial Ethernet architectures to provide QoS and add a convergent prospect for ‘extended-home’ High Definition Multimedia services distribution

Subject:


• Organization Profile

• Issues facing the Digital Home

• The alternative calle Industrial Ethernet

• A wide bouquet where user can choose

• The need for a suitable playground

• Description of Digital Innovation

• Competitive Advantages

• Conclusions

Agenda:


Created in 1974, in the heart of MCC (Mondragón Corporación Cooperativa). www.mcc.es

MCC is the 6th largest Spanish Corporation with more than 84.000 employees.

Fouder member of the IK4 alliance. www.ik4.es

Technology scanning.

Assimilation and generation of knowledge.

Transfer of state-of-the-art technology to companies, mainly small and medium-

sized enterprises (SME).

Organization profile: IKERLAN


The goal of the Communications Knowledge Area is customised

integration of communications elements in final products.

Staff: 50 engineers in Communications Department (with CEIT- Alliance)

250 ~Ikerlan

1.000 ~ IK4

84.000 ~ MCC

Organization profile: IKERLAN









• Conclusions

Agenda:


-AM TV (analogue terrestrial television): VHF, UHF

8 MHz per analogue TV channel.

+

TDT (COFDM-TV)

“Triple Play”

+ Ambient Intelligence

- AM, OM, FM radio

-FM TV (analogue satellite television)

Became popular in the 90’s.

-DVB-C (64-QAM-TV)

Fibre+HFC. Owner of the network until the PAU is reached. -XDSL (imagenio, ADSL

line), DVB-IP

- DVB-S (QPSK-TV)

Issues facing the Digital Home


ResidentialGateway

TR-69 and OSGi enabled

Access Network

Wi-FiPC STB

Ethernet

AccessPoint

IEEE 1394

SAT tuner

PVR

DV Cam

White goods

Home automation bus(PLC…)

Sensors andmetering



Use of Industrial buses to redistribute high

constraints data traffic:

MULTIMEDIA

Ethernet + QoS = INDUSTRIAL ETHERNET

HDTV Ambient Intelligence QoS Home Backbone



Ethe

rnet

IEEE-1

394

PLC

Indu

strial

Et

hern

et

A convergent architecture for the home and extended-home backbone, with the union

of different backbone technologies over different physical media.

A new actor appears to become the main spine of the ubiquitous

home backbone, The industrial Ethernet or Real-Time Ethernet, in

order to redistribute new High Definition services and introduce an

innovative time-constraints compliant architecture.

Response to the Maturation

of HDTV and irruption of

Ambient Intelligence

services.


UW

B

IP









• Conclusions

Agenda:


Multimedia contentAnd Services,

Broadcaster

Telecom Operator

Service Provider

LightningDevices

Audio/VideoEquipment

SecurityDevices

Home Appliances Controllers

(PDA, TV, PC)

TelephonyServices

Industrial Ethernet(Real-Time Ethernet)

Backbone

Multimedia inputs

Management

The alternative called Industrial Ethernet









• Conclusions

Agenda:


During all the Project

Importance of actualizing the State

of the Art

INDUSTRIAL PROFILES Evolution

14 candidates

of INDUSTRIAL ETHERNET

A wide bouquet where user can choose

Evolution of Fieldbus Technology…


How much they differ from standard Ethernet (802.3)?



How to obtain a deterministic time:

TIME-SLOT MECHANISM

Super-imposes the Time-Slot to the CSMA/CD


Differentiates isochronous traffic from asinchronous one.

Special switches are used to connect devices (Vs standard hubs used by EPL)

100 Mbps

Special ASIC or FPGA

TIME-SLOT MECHANISM



PHY and message -> ETHERNET

Existing mechanisms -> SERCOS

Neither Switches nor Hubs

Special ASIC or FPGA


TIME-SLOT MECHANISM


ETHERNET frame structure, but a very different operative mode:

Each cycle time, only one frame travels over the bus.

Special ASIC or FPGA for the slaves.

HW Processing -> “On The Fly”



Doesn’t work with cyclic times, but it takes into account a timing system.

UDP + QoS + IEEE1588

+ faster, + simple than TCP

+ priority over real time SWITCHES

Synchronization of high accuracy



Organization Response Time (for 100 axles)

Jitter Tx speed

Ethernet/IP CIPSync ODVA

1ms(aprox.) <1ms 100Mbps

Ethernet Powerlink EPSG

<1ms <1ms 100Mbps

Profinet-IRT PNO

<1ms <1ms 100Mbps

Sercos III IGS

<0.5ms <0.1ms 100Mbps

EtherCAT ETG

0.1ms(aprox.) <0.1ms 100Mbps

Tendency:

Slaves made with ASIC or FPGA. Better timing characteristics.










• Conclusions

Agenda:


A way to provide an isochronous bus

technology with low delay and jitter

rates provided.

High efficiency

Low jitter

Low cost FPGA.

Hardware processing: On-The-Fly

The need for a suitable playground


The need for a suitable playground

Standard 802.3 Ethernet Frame.

Registered Ethertype (IEEE): 0x88a4

Implemented also over UDP









• Conclusions

Agenda:


NETWORK MONITORING TOOL

Created for this demonstration

Network statistics -> RTP sessions

Perturbing traffic generator.

DEVELOPED BY THE POLICIES OF QUALITY OF IKERLAN

PRAGMA

Description of Digital Innovation


Description of Digital Innovation“Testing scenario”


JITTER ETHERNET

( ) 10812 3687 ( 3562) ( 3663) ( 1687) ( 3337) 1462jitter s A B C AB AC BC

A: NeMo perturbing

B: Bit rate C: Rx PC’s characteristics



( ) 103 1 ( 74) ( 85) 0 ( 1) 75jitter s A B C AB AC BC A: NeMo perturbing

B: cycle time C: CPU Limit %


JITTER ETHERCAT


EtherCAT Vs Ethernet

Jitter EtherCAT < 100 us

Imperceptible perturbation on EtherCAT

Error 5-10%




Low Delay.

Low Jitter.

No disturbance due to the inserted perturbing traffic.

On-The-Fly frame processing.

IEEE-1588 synchronization.

Specific ASIC or FPGA.









• Conclusions

Agenda:


Competitive Advantages

Proposed communications infrastructure provides an important added value from both

technological and social point of view:

Technological Opportunities:

Ethernet is well-known as the most succesfull communications technology ever, and

associated HW and wiring has reached mass market price. New Medium Access

Mechanisms added making it useless for the audiovisual real-time distribution.

Social Impact:

Evolution towards Ambient Intelligent services and incoming High Definition leaded

technological wave. An increasing social demand for implementing an extended-

home backbone in a low cost that will allow the easy technological adoption from

end user.









• Conclusions

Agenda:


Convergence between legacy services’ needs and low jitter requiring applications,

thanks to the embedded Ethernet standard nature of EtherCAT.

It has been demostrated the validity of the implementation of segments of the home

backbone based on Industrial Ethernet (EtherCAT).

Scientifical contribution’s added value has been introduced with the innovative

comparison between standard Ethernet and EtherCAT buses based on specific

methodologies.

Conclusions


IKERLAN

Technological Research Centre

(IK4 Research Alliance)

Pº J.M. Arizmendiarrieta, 220500 Arrasate – Mondragón

(Gipuzkoa)

Tel.: int (+34) 943 71 24 00Fax: int (+34) 943 79 69 44

Josu Bilbao UgaldeTelecommunication Engineer

Communications Knowledge Area, IKERLAN

{[email protected]}

www.ikerlan.es ; www.mcc.es ; www.ik4.es

Personal Contact details:

31/Aug/2007 Session VI: Network Technology Trends Industrial Ethernet architectures to provide QoS...

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