March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [IEEE 802.15.4f Key User and Technical Requirements]Date Submitted: [12 March 2009]

Source: [Mike McInnis] Company [The Boeing Company] Address [P.O. Box 3707, Mail Code 7M-CA, Seattle, WA 98124-2207, USA.] E-Mail:[michael.d.mcinnis@boeing.com]Re : []Abstract: [Key Requirements derived by IEEE 802.15.4f Task Group March 2009 ]Purpose:[TG4f Working Document pertaining to Key User and Technical Requirements]

Notice :This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.Release:The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Draft

Key User and Technical Requirements Summary

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Active RFID Tag Definition

• An Active RFID tag is a device which is typically attached to an asset or person with a unique identification and the ability to produce its own radio signal not derived from an external radio signal. Active RFID tag applications include wireless sensor telemetry, control, and location determination. To generate a radio signal, Active RFID tags must employ some source of power. Traditionally this has been accomplished by integrated batteries, although designs exist for such devices that harvest ambient energy from the surrounding environment.

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

802.15.4f User Requirements Summary

• Must have optional capability to provide another unique ID• Regulatory compatibility

– Regional– Global

• Tag location capability– Precision– Presence– Portal, Choke point, sign post

• Baseline tag with capability to add optional features• Tag power management

– Methods to conserve battery energy (low energy use)• Option to control tag• Indoor and outdoor use

– Including extreme RF environments• Sensor integration requirement (optional)• High tag density

– Per reader• Minimum cost tag (baseline)

– Tag does not require every optional feature and functionality• Real Time

– Low latency between when the event occurs and when it is recognized on the other end• Mobility (roaming between readers) • Total Cost of Ownership (TCO)• Range

– Line of Sight (LOS)– Non-Line of Sight (NLOS)

• Electromagnetic non-interference with other electronic devices– Example: implantable devices

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

802.15.4f Technical Requirements Summary

Utilize 802.15.4 MAC Every tag/device has a 64 bit MAC address

– Must have optional capability to provide another unique ID Regulatory compatibility

– Regional– Global

Tag location capability– Precision– Presence– Portal, Choke point, sign post

Baseline tag with capability to add optional features Tag power management

– Methods to conserve battery energy (low energy use) Option to control tag (covered under baseline tag options and optional two-way communications) Indoor and outdoor use

– Including extreme RF environments Sensor integration requirement (optional) (covered under baseline tag options and ability to support a

unique ID)– Variable Packet Data Unit payload size (capable of between x to y bytes of information)

High tag density– Per reader

Minimum cost tag (baseline)– Tag does not require every optional feature and functionality

Real Time– Low latency between when the event occurs and when it is recognized on the other end

Mobility (roaming between readers) (changed to 802.15.4 MAC Requirements) Range (changed to Maximum Transmitter Power in lieu of discussing ‘range’)

– Line of Sight (LOS)– Non-Line of Sight (NLOS)

Electromagnetic non-interference with other electronic devices

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Utilize 802.15.4 MAC

• Starting point• Make changes necessary to the

802.15.4 MAC required to support new PHY(s)

• Desire is to avoid making, or to make only minimum, changes to the MAC

• Compatibility with IEEE 802 hierarchy 802.1(?)

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Capability to provide unique ID

• Optional

• Variable up to 35 characters - Maximum– 35 characters x 6 bits (largest known to

date per a NATO STANAG)

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Regulatory Compatibility• Indoor or/and outdoor

• UWB Band– Korea*

• Korea Communications Commission 2008-033– Japan*– China – draft state– Europe*

• ETSI EN302.500 (location std for ETSI)– Australia– United States*

• 15.250 (U.S. Wideband regulations)• 15.519 (U.S. Handheld UWB regulations)• 15.517 (U.S. indoor UWB regulations)

– Singapore*– Other

• 2.4 GHz Band– 15.247 (U.S. ISM regulations)– Other

• Sub-GHz Band (433.92 MHz ?)– 15.231– 15.209 – Other

• Other frequency bands

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Tag location capability

• Position– Defined in 2 or 3 dimensions

– Precision of tag position – Sub 1 meter– Sub 3 meter– Sub 10 meter

• Presence (Reader location) – A tag within the read range or coverage zone of at

least one reader

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Tag Features• Baseline

– MAC (see MAC slide)

– Transmitter

– Coexistence with IEEE 802 family• Depending on the transmitter PHY utilized, a receiver function may be required• Definition:

– "A state of acceptable co-channel and/or adjacent channel operation of two or more radio systems (possibly using different wireless access technologies) within the same geographical area."

– Ability to produce its own radio signal not derived from an external radio signal

• Optional features– Two-way communications

– Example payloads supported– E.g. Unique ID, Battery status, Sensor, Event occurrence, etc

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Tag power management

• Low energy use– Examples

• Sleep mode• Duty Cycle• Low blink rate• Variable packet data frame size• Variable transmitter power• Etc.

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Maximum Transmitter Power

• IN LIEU OF THE DISCUSSION ON RANGE REQUIREMENTS

• Per spectrum regulations for each country

• A variety of RF transmitter powers are acceptable and may result in various class types to accommodate.

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Device Classification

• Multiple class vs single class of devices?

• Do we want to have ‘classes’ of devices?– If so What attributes define a class of device?– Solicit through CFP?

• RF transmitter power• Energy consumption (battery life)• Baseline Tag• Data rate• Uni-directional or bi-directional communication• Frequency band• Modulation• Regional vs global devices

– Common PHY and channel for global devices?• Indoor or/and outdoor• Realtime

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Electromagnetic non-interference with other electronic devices

• Must meet IEEE 802 coexistence requirements– An IEEE 802 coexistence document/exhibit

is required from 802.15.4f to 802.19.

• Must meet in-country regulatory requirements

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

802.15.4 MAC Requirements

• Define and resolve any issues with 802.15.4 MAC– Tag Multicast / Broadcast

• Simultaneous reception and processing of tag transmissions by multiple readers is not currently supported in the 802.15.4 MAC.

– Data Payload Indicator• Indication whether data payload is present

– If a data payload is indicated then;• Variable data payload size capability

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Indoor and Outdoor Use

• Including extreme RF environments– Outdoor

• Weather rain, fog, snow, (moisture) and PHY selection• Multipath

– Review currently available channel models

– Indoor• Multipath

– Review currently available channel models

• Seamless tag handover between indoor and outdoor systems– Same PHY to same PHY– One PHY to another PHY

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

High Tag Density Per Reader

– Number of tag transactions per second per reader

– Uni-directional– Bi-directional– Data rate– Beacon rate– Modulation scheme– PHY frame size

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Real Time• Low latency between when the event occurs

and when it is recognized on the other end.– Data rate– Packet size

• MAC layer overhead

• How frequently the tag transmits or communicates– Beacon rate

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Misc.

– Tag motion and speed• Doppler affects the PHY modulation selection

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

PHY(s) Parameters

• Operating band(s) (band/channel plan)• Modulation and Coding Scheme(s)• Sync Header (preamble, SFD, length, codes)

– Suggestions• Short header• Short preamble

• Synchronization and Timing • Bit Rate, Symbol Rate, Chip Rate (as appropriate)• Transmitter characteristics

– Power Spectral Density Mask (in band, out of band)– Transmit Power

• RSSI and/or Link Quality Indicator methods• Reliability enhancing features/methods• Co-existence mechanisms

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Defined Terms List

• Synchronization

March 2009

IEEE 802.15.4f Working Document

doc.: IEEE 802.15-09-203-03-004f

Submission

Differentiation of PHY Characteristicsfrom other IEEE 802 PHYs

• Can take advantage of PHY channel bandwidths which are narrower or wider than current defined 802 PHYs

• Very low energy consumption (enable energy harvesting)

• Very high number of devices• Can take advantage of minimal IEEE

802.15.4 MAC features