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Technical Track www.odva.org 802.11n – Wireless Performance for Control? Paul Brooks, Rockwell Automation Paul Didier, Cisco.

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Presentation on theme: "Technical Track www.odva.org 802.11n – Wireless Performance for Control? Paul Brooks, Rockwell Automation Paul Didier, Cisco."— Presentation transcript:

1 Technical Track www.odva.org 802.11n – Wireless Performance for Control? Paul Brooks, Rockwell Automation Paul Didier, Cisco

2 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 2 © 2011 ODVA, Inc. All rights reserved. www.odva.org Agenda Wired – Wireless Factory Vision and Use Cases Deploying WiFi: Autonomous vs. Centralized management of Access Points 802.11N – Why its good for CIP and EtherNet/IP applications Interoperability: CCX – an industry best practice Cisco and Rockwell Automation Testing

3 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 3 © 2011 ODVA, Inc. All rights reserved. www.odva.org Agenda Wired – Wireless Factory Vision and Use Cases Deploying WiFi: Autonomous vs. Centralized management of Access Points 802.11N – Why its good for CIP and EtherNet/IP applications Interoperability: CCX – an industry best practice Cisco and Rockwell Automation Testing

4 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 4 © 2011 ODVA, Inc. All rights reserved. www.odva.org Wireless Factory Vision (Confidential – For Internal Use Only) Copyright © 2008 Rockwell Automation, Inc. All rights reserved. 4 Long Haul (SCADA) Various IP based technologies ISA-100.11a WirelessHART Wireless Infrastructure Factory Server Wireless IEEE 802.11n Access Point Process Instrumentation 802.15.4 WirelessHART and/or ISA100.11a Discrete Sensors Technology: In Research Ethernet Switch Ethernet and EtherNet/IP are becoming dominant in processing and manufacturing – WiFi will follow Process applications have needs better met by Wireless HART and ISA-100 than WiFi Long distance comms will use satellite, GPRS, 3G, WiMAX etc technologies, Internet Protocols (IP) ensures interoperability Wireless and Wired – 1 User Experience

5 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 5 © 2011 ODVA, Inc. All rights reserved. www.odva.org (Confidential – For Internal Use Only) Copyright © 2008 Rockwell Automation, Inc. All rights reserved. 5 Application Considerations Common usage today Application restrictions not relevant to CIP ? Product available space ? Latency biggest challenge Fidelity biggest challenge

6 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 6 © 2011 ODVA, Inc. All rights reserved. www.odva.org Drivers for Wireless Applications More points of visibility and control Eliminating Wires and Cables Increase Reliability Replace cables (e.g., moving machinery) Reduce Installation Cost Wireless I/O, Wireless Sensor and mesh networks Reach great distances (SCADA ) Enabling Portability and Mobility Mobile HMI (People) AGVs (Equipment) Communications (VoWLAN) Tracking Assets RFID Real-Time Location Services Remote Device Monitoring Troubleshooting / Maintenance Instrumenting existing machinery Video Surveillance Security and process monitoring Guest Access 802.11 Tag

7 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 7 © 2011 ODVA, Inc. All rights reserved. www.odva.org Wireless Use Cases/Configurations Operator moves from zone to zone around a machine Functions enabled and disabled according to location & user Display changes according to location & context Mobile equipment full automated Moves through a number of access points Remote control maintained through cycle Rotating Equipment Fixed equipment in hard to reach location Wireless connection lower cost than wired Standalone or integrated Wireless AP

8 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 8 © 2011 ODVA, Inc. All rights reserved. www.odva.org Use Case – Anode Making Moving Ramps: Hard to Reach 83 Ramps, 350 locations Moving Ramps: Hard to Reach 83 Ramps, 350 locations Cranes: Mobile equipment 1200m traverse Cranes: Mobile equipment 1200m traverse Workers: Asset Management, Enterprise Planning Voice Workers: Asset Management, Enterprise Planning Voice 4 Networks Installed!

9 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 9 © 2011 ODVA, Inc. All rights reserved. www.odva.org Images from a Smelter On-machine Access Point In-cabinet Client Gateway In-cabinet Access Point

10 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 10 © 2011 ODVA, Inc. All rights reserved. www.odva.org Agenda Wired – Wireless Factory Vision and Use Cases Deploying WiFi: Autonomous vs. Centralized management of Access Points 802.11N – Why its good for CIP and EtherNet/IP applications Interoperability: CCX – an industry best practice Cisco and Rockwell Automation Testing

11 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 11 © 2011 ODVA, Inc. All rights reserved. www.odva.org WiFi Deployment Autonomous vs. Centralized Autonomous Solution Controller-Based Solution Flexible architecture for campus, branch, home, and outdoor (Mesh) Fast roaming Centralized management and troubleshooting for lowest TCO Mobility Services for voice over WLAN, guest access, context-aware and Adaptive wIPS Industry leading scale for 802.11n Small plant or factory Base level Wi-Fi functionality Limited Scalability Upgrade Path to Controller-based Access Points (autonomous) Components Access Points (lightweight) WLAN Controller Location Services Components

12 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 12 © 2011 ODVA, Inc. All rights reserved. www.odva.org CentralizedArchitecture Benefits Centralized Management Flexible /Scalable Value- Added Services Mobile /Secure Reliable Wired/Wireless Guest Access Voice over WLAN Location Service Media Ready (VideoStream) Roaming Security Policy Wireless IDS Centralized Architecture Buy as you grow licensing Appliance/Module Ease of deployment/upgrade Load Balancing to optimize per user performance Dynamic RF Spectrum Management

13 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 13 © 2011 ODVA, Inc. All rights reserved. www.odva.org Agenda Wired – Wireless Factory Vision and Use Cases Deploying WiFi: Autonomous vs. Centralized management of Access Points 802.11N – Why its good for CIP and EtherNet/IP applications Interoperability: CCX – an industry best practice Cisco and Rockwell Automation Testing

14 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 14 © 2011 ODVA, Inc. All rights reserved. www.odva.org What Painpoints Does 802.11n Solve? ThroughputUp to 6 times greater than existing networks ReliabilityFewer packet retries PredictabilityConsistent coverage and throughput CompatibilityBackwards support for 802.11a/b/g clients Future-ProofingGuaranteed Interoperability – Tested/Validated Better performance for data, voice, video, and control

15 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 15 © 2011 ODVA, Inc. All rights reserved. www.odva.org Technical Elements of 802.11n MIMO 40Mhz Channels Packet Aggregation Backward Compatibility MIMO 40Mhz Channels Packet Aggregation Backward Compatibility

16 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 16 © 2011 ODVA, Inc. All rights reserved. www.odva.org Aspects of 802.11n Performance Beam FormingSpatial MultiplexingMaximal Ratio Combining MIMO (Multiple Input, Multiple Output) MIMO 40Mhz Channels Packet Aggregation Backward Compatibility Performed by Transmitter (Talk Better) Ensures Signal Received in Phase Increases Receive Sensitivity Works with non-MIMO and MIMO Clients MIMO AP HALLWAY Without Beam Forming Transmissions Arrive out of Phase With Beam Forming Transmissions Arrive in Phase, Increasing Signal Strength

17 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 17 © 2011 ODVA, Inc. All rights reserved. www.odva.org Aspects of 802.11n Beam FormingSpatial MultiplexingMaximal Ratio Combining MIMO (Multiple Input, Multiple Output) 40Mhz Channels Packet Aggregation Backward Compatibility Performed by Receiver (Hear Better) Combines Multiple Received Signals Increases Receive Sensitivity Works with non-MIMO and MIMO Clients Performance Multiple Signals Sent; One Signal Chosen Without MRC Multiple Signals Sent and Combined at the Receiver IncreasingFidelity With MRC MIMO AP

18 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 18 © 2011 ODVA, Inc. All rights reserved. www.odva.org Aspects of 802.11n Beam FormingSpatial MultiplexingMaximal Ratio Combining MIMO (Multiple Input, Multiple Output) 40Mhz Channels Packet Aggregation Backward Compatibility Transmitter and Receiver Participate Concurrent Transmission on Same Channel Increases Bandwidth Requires MIMO Client Performance stream 1 stream 2 Information Is Split and Transmitted on Multiple Streams MIMO AP

19 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 19 © 2011 ODVA, Inc. All rights reserved. www.odva.org Aspects of 802.11n 40Mhz ChannelsPacket Aggregation 40Mhz Channels Packet Aggregation MIMO Backward Compatibility Carpooling Is More Efficient Than Driving Alone Without Packet Aggregation Data Unit Packet 802.11n Overhead Data Unit Packet 802.11n Overhead Data Unit Packet 802.11n Overhead With Packet Aggregation Data Unit Packet 802.11n Overhead Packet

20 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 20 © 2011 ODVA, Inc. All rights reserved. www.odva.org Packet AggregationBackward Compatibility Aspects of 802.11n Packet Aggregation Backward Compatibility MIMO40Mhz Channels 2.4GHz5GHz 802.11ABG Clients Interoperate with 11n AND Experience Performance Improvements 11n Operates in Both Frequencies

21 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 21 © 2011 ODVA, Inc. All rights reserved. www.odva.org 802.11n Its About a Whole Lot More Than Speed ThroughputReliabilityPredictability 802.11a/g with AP1240 802.11a/g with AP1250 802.11n with AP1250 IDEAL 6092 130 2x Predictability of Throughput Standard Deviation of Packet Retries Mbps Throughput 11a/g – AP1240 11a/g – AP1250 11n – AP1250 Average Packet Retries 2x Enhanced file transfer and download speeds for large files Lower latencyMore consistent coverage and throughput for mobile applications >5x 5x more throughput 2x more reliable 2x more predictable

22 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 22 © 2011 ODVA, Inc. All rights reserved. www.odva.org Agenda Wired – Wireless Factory Vision and Use Cases Deploying WiFi: Autonomous vs. Centralized management of Access Points 802.11N – Why its good for CIP and EtherNet/IP applications Interoperability: CCX – an industry best practice Cisco and Rockwell Automation Testing

23 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 23 © 2011 ODVA, Inc. All rights reserved. www.odva.org Standards and Implementation Process 802.11CiscoWiFi Standards GroupCompanyIndustry Group The nature of engineers and the design by committee environment mean the IEEE often defines overly feature rich standards with many options The industry bodies role is remove much of the bloat introduced as features into the IEEE standards, often by people not even selling equipment Cisco adds differentiating features to the minimal set defined by WiFi. In the past, this has included better security. Features are licensed to RF chip vendors under CCX program Feature BloatDifferentiated Features Minimal Features How are WLAN standards created? - Roles

24 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 24 © 2011 ODVA, Inc. All rights reserved. www.odva.org CCX Overview Open Mobility Services Architecture Standard based innovation Tested interoperability Open Mobility Services Architecture Standard based innovation Tested interoperability Innovative and reliable applications Consistent delivery of services across access networks Innovative and reliable applications Consistent delivery of services across access networks Industry Mobility Solutions Application Infrastructure Secured and robust Mobile foundations Tested interoperability Platform for reliable and high value mobile applications Secured and robust Mobile foundations Tested interoperability Platform for reliable and high value mobile applications Silicon - Device Addressing wave of devices Managing disparate networks Deploying applications Accelerating innovation while maintaining interoperability A partnership program to drive accelerated innovation and deliver value to mobile users Wireless Controller Mesh AP Lightweight AP Generic AP

25 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 25 © 2011 ODVA, Inc. All rights reserved. www.odva.org Christophe Servais CCX – Industry Standard Over 120 vendors participants 70% of all features developed in the program have since achieved standard 90% of WiFi silicon is CCX certified. Services platform for reliable and high value mobility solutions Fast addressing customer pain points through accelerated innovation Flexible approach for optimum match of Service and Device function Commitment to Standards Delivering Mobile Services across transport layer Tested interoperability (Network, Device, OS) Services platform for reliable and high value mobility solutions Fast addressing customer pain points through accelerated innovation Flexible approach for optimum match of Service and Device function Commitment to Standards Delivering Mobile Services across transport layer Tested interoperability (Network, Device, OS) Supplementing Wi-Fi certification with innovative and tested capabilities

26 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 26 © 2011 ODVA, Inc. All rights reserved. www.odva.org Christophe Servais CCX Services CCX services Robust and secure Connectivity Seamless connectivity 802.11 Future Media Future media Foundation Location Future Services Context Aware Voice - Video Future Services Collaboration Management Reliable and Accurate location Voice ready devices Voice quality monitoring Congestion management Remote diagnostic of mobile devices Building robust and secured Mobile foundations

27 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 27 © 2011 ODVA, Inc. All rights reserved. www.odva.org Christophe Servais Making the RF link more secure Cisco Unified Network and CCX Mobile devices encrypt all management packets exchanged EAP-FAST natively provided on all CCX devices Cisco Unified Network and CCX Mobile devices encrypt all management packets exchanged EAP-FAST natively provided on all CCX devices Radio interface is composed of Data and Management traffic. How to ensure both traffics are secured? 802.11 Future Media Future media Foundation Location Future Services Context Aware Voice Future Services Collaboration Management MFP allows protection from DOS attacks and quick detection of Man in the Middle and other Management Frame attacks highest security made available at no additional cost Benefits : highest security made available at no additional cost

28 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 28 © 2011 ODVA, Inc. All rights reserved. www.odva.org Christophe Servais Ensuring fastest roaming with 802.1x Ciscos Centralized Key Management (CCKM) is a Key management protocol that enables fast 802.1x reauthentication. CCKM allows active AP and CCX Mobile device to derive new encryption key before re-association to accelerate the secure roaming process. Ciscos Centralized Key Management (CCKM) is a Key management protocol that enables fast 802.1x reauthentication. CCKM allows active AP and CCX Mobile device to derive new encryption key before re-association to accelerate the secure roaming process. Encryption Keys are re-calculated at every association and re-association, delaying the roaming process. How to accelerate securely the management of keys when the mobile device roams ? 802.11 Future Media Future media Foundation Location Future Services Context Aware Voice Future Services Collaboration Management Ensures fastest secure roaming for optimum user experience Benefits : Ensures fastest secure roaming for optimum user experience

29 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 29 © 2011 ODVA, Inc. All rights reserved. www.odva.org How CCX Works

30 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 30 © 2011 ODVA, Inc. All rights reserved. www.odva.org Agenda Wired – Wireless Factory Vision and Use Cases Deploying WiFi: Autonomous vs. Centralized management of Access Points 802.11N – Why its good for CIP and EtherNet/IP applications Interoperability: CCX – an industry best practice Cisco and Rockwell Automation Testing

31 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 31 © 2011 ODVA, Inc. All rights reserved. www.odva.org Unicast I/O Control Connections V18 Enables a Logix controller to communicate to other EtherNet/IP devices via unicast Applies to standard I/O* and standard produced/consumed tags Unicast support for safety produced/consumed tags and safety I/O will be added at a later release Enhancements making Logix Wireless Ready

32 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 32 © 2011 ODVA, Inc. All rights reserved. www.odva.org Enhanced Testing – Point to Multi-Point Test Configuration LoadQTYID 5.67k pps32ms1-3 43ms4-7 RPIQTYms 20ms7Min Latency0.921 Ave Latency1.075 Max. Latency3.797 1756-ENBT Maximum recommended 4,000 pps Wireless Performance Matches Wired for I/O Control with 1 Scanner

33 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 33 © 2011 ODVA, Inc. All rights reserved. www.odva.org Enhanced Testing – Packet Aggregation Test Configuration InterfaceLoadQTY ENBT #15000 pps52ms ENBT #25000 pps52ms EN2T9000 pps92ms Device limits are more significant than network limits

34 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 34 © 2011 ODVA, Inc. All rights reserved. www.odva.org Wireless-N A Step Change in Technology (Confidential – For Internal Use Only) Copyright © 2008 Rockwell Automation, Inc. All rights reserved. The step from Wireless-G to Wireless-N is as dramatic as the step from 10MBps Ethernet with Hubs to 100MBps Ethernet with Switches Making Mainstream Control Possible The step from Wireless-G to Wireless-N is as dramatic as the step from 10MBps Ethernet with Hubs to 100MBps Ethernet with Switches Making Mainstream Control Possible

35 Technical Track2011 ODVA Industry Conference & 14 th Annual Meetingpage 35 © 2011 ODVA, Inc. All rights reserved. www.odva.org Summary – Key Takeaways 802.11n is right technology Ratified Already in use in process critical applications Unicast for control over wireless Active spectrum management is critical And it is a human responsibility Architecture options – Autonomous / controller based Autonomous – small localized point applications Controller based – scalable, multi-application, lower TCO Technology proven and deployed for Human mobility in the plant Mobile equipment


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