Wireless Interface Options for 1451 Mike Moore Steve Smith Oak Ridge National Laboratory Presented at Sensors Expo San Jose, CA May 20, 2002

Presentation Sections  Key Goals of Standard  Other Standards That Can be Leveraged –IEEE 802 IT Architecture –Various PHY components  Variety of Nodes –Sensor, Network, Repeater, etc.

Key Elements of Sensor Standard  TEDS (Transducer Electronic Data Sheet)  Synchronization of Data Sampling  Unique Identification of Transducer  Accessibility to Networks (e.g. Internet)  Plug-and-Play Sensor Connections

 Use IEEE 802 Family As a Model  Use TEDS features from IEEE 1451.x (esp..3)  Look at PHY options from other standards – IEEE – IEEE – RTLS, others  Use Unique ID functionality based on the MIT AutoID’s ePC program. Candidate 1451 MAC/PHY From Other Wireless Standards

OFDM =Orthogonal Frequency Division Multiplex FHSS = Frequency Hopping Spread-Spectrum DSSS = Direct-Sequence Spread-Spectrum

Existing IEEE 802 Wireless Projects  IEEE – (Bluetooth) – (Compatibility) – DSSS PHY longer-range, lower-power option  IEEE Clause ,2 Mbps FHSS LAN MAC for 2.4 GHz Clause ,2 Mbps DSSS LAN for 2.4 GHz –IEEE a Adds Clause 17 -  54 Mbps OFDM LAN for 5 GHz –IEEE b Adds Clause and 11 Mbps DSSS for 2.4 GHz  IEEE b (Task group 4) Wireless High-Speed Unlicensed Metropolitan Area Network (Wireless HUMAN) MAC: IEEE PHY: IEEE a; ETSI BRAN HIPERLAN/2

The Layered 802 Family Architecture Provides a Good Framework for Organizing the 1451 Family of Standards

IEEE P Should Accommodate the Rapidly Changing Wireless Arena Object Model Tblock MAC/ TII Tblock MAC/ HPNA Tblock MAC/ MMI Tblock MAC/ Wire- less 1451 Data Link Layer PHY App Layer a ( ) b ( ) RTLSOther

Replies to “What user need(s) does RTLS solve?”   ne air interface  Wireless telemetry  Global license-free frequency (e.g., FCC Part 15)  Non-interfering / non-susceptible to interference from wireless LANs  X, y, and possibly z axis  Battery-life (if required) (standard test methods)  Resolution (standard test methods)  Range (standard test methods)  Safety (intrinsic)  Security (authentication, non-repudiation, encryption, authorization)  No additional wireless infrastructures to manage  Refresh rate  Tag density  Data standards for common interface between components and host systems output data stream From: Minutes NCITS T20 RTLS 21 August 2001 Bolded/Underlined Items May Overlap with P Real-Time Locating System (RTLS) user community is seeking a generally similar solution to IEEE P1451.5

 Use the ePC (electronic version of the UPC; having 64 or 96-bits) for the TBC, TBIM and transducer UUID's [additional TEDS, compact TEDS and metaTEDS could still be stored on the devices if desired].  An NCAP F-block would send the ePC to the object name server (ONS -- analogous to DNS) which returns a URL for detailed information on the device.  TEDS and additional information could be available at the referenced URL all described using PML which uses the same format and structure as the eXtensible Markup Language (XML).  Software (The SAVANT by MIT) will be available later this year to implement ePC/ONS/PML transactions. MITs AutoID Program Provides World-wide Unique ID Functionality in the Form of an Electronic Product Code (ePC).

Wireless Work Leverages Other 1451 Projects Smart Transducer Object Model from Basic TEDS Concept from Synch and XML TEDS from P Compact TEDS and Transducer Interface from P1451.4

The Architecture Needs to Accommodate Various Types of Nodes Courtesy of Axonn L.L.C.

P SG Is Considering Several Types of System Nodes  Transducer Nodes – Bidirectional (Synchronous) – Transmit-Only (Asynchronous) – Mobility Capable  Network Nodes – Bidirectional – Receive-Only – Mobility-Capable  Repeater Node  Compute Node  Display Node

Path Ahead for Future Growth A Well-Planned Architecture for Enables the Quick Incorporation of...  Emerging Wireless Technologies  Data Security (as described in IEEE 1363)  Mobile Ad-Hoc Networking  Other Useful Features

Conclusion A New Wireless Transducer Interface, IEEE P1451.5, is currently being studied that will ideally...  Efficiently Leverage Sensor Networking Capabilities From the Other IEEE 1451 Projects  Include Multiple Robust MAC/PHY Combinations  Use the IEEE 802 Family-of-Standards Approach as a Model  Have a Layered Architecture – Enabling Rapid Ramp-Up Utilizing Existing Products – Enabling Flexible Future Growth