IEEE 802.15.3c

1
Project IEEE P802.15 Working Group for Wireless
Personal Area Networks (WPANs) Submission Title
Response to SG3c CFA Proposed PHY Layer Date
Submitted July 15, 2004 Source Abbie
Mathew Company Newlans, Inc. Address 238
Littleton Road, Westford, MA 01886,
USA Voice617-283-1363, E-Mailamathew_at_newlans
.com Re Doc. 04/240r2 IEEE P802.15.SG3c Call
for Applications AbstractProposed Market
Drivers Purpose Use as one of the sets of
criteria for establishing the Alternative PHY
standard for IEEE 802.15.SG3c 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.
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Selected Literature Survey
Authors Environment Summary
Maraitis and Constantino, 2002 Corridor 44 x 2.2 x 2.7 m Brick and plasterboard walls. Antenna BW 15o x 28o. No diffractions Reflections from walls 3 to 6 dB below LOS wave Delay spread was 7 ns at 30 m
Smulders, Herben, and George, 2001 Office room 8.75 x 4.9 x 3.1 m. Plastered concrete walls. Antenna BW 12o x 70o. Gain 16.5 dB Received power dynamic range of 35 dB from as range was varied between 1 and 8 m RMS delay spread from 10 to 120 ns Loss through 15 cm concrete 35 dB
Xu and Rappaport, 2002 Virginia Tech campus buildings Reflected power from side walls varied 0 to -20 dB relative to LOS signal Room-to-room attenuation was 35 dB Concrete attenuation was 74 dB within one week of concreting and 28 dB after 14 months Angular spread in Az was larger for NLOS that in LOS situations
.. Continued ..
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Selected Literature Survey
Authors Environment Summary
Anderson and Rappaport, 2002 Virginia Tech campus buildings. Attenuation measured for various building components. Attenuation of 6 dB for 2.5 cm drywall, 9.6 dB for 1.9 cm office whiteboard, 3.6 dB for 3 mm clear glass, 10.2 dB for 3 mm mesh glass. Path loss exponent 2.1, Standard deviation 7.9 dB
Sato, 1997 Reflection coefficients and transmission coefficients measured for various multilayered walls Circular polarization reflections much less than linear polarizations LOS links RMS spread was 12 ns to 60 ns for ranges less than 100m. For room-room LOS links the delay spread was 17 ns. For hallway-room links, the delay spread was less than 22 ns.
Sato and Manabe, 1998 Office room 8 x 10 m with desks (0.7 x 1.4 x 0.7 m). Human height 1.8 m, base station height 2.6 m, terminal station height 1 m Human body loss 18 to 20 dB 70 visibility out to 8 m with one base station 95 visibility out to 8 m with two base stations Visibility greater than 98 for population density half of the desk density
Flament, 1999 18 x 10 m large office with 3 m hallway, 20x40 m shopping mall area. RMS delay spread approximately 18-20 ns.
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Effects of Linear Polarization
Horizontal Polarization
Vertical Polarization
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Effects of Circular Polarization
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Frequency Allocation Data Rate

• 1 GHz wide channel
• Initially offer 1 Gbps/channel
• Migrate to 2 Gbps/channel
• Channel space TBD
• Four channels in US band plan
• Four channels in Japanese band plan

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Duplexing Scheme
TDD

• More available channels
• Supports symmetric and asymmetric traffic
• Enables prioritization of stations/subscribers
  and traffic
• Highly effectively for busty traffic as well as
  voice
• Enables advanced technologies such as mesh and
  adaptive antennas
• Proven technology

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802.15.3 Traffic Types
Priority Traffic Type Traffic Type Application Comments
0 (Default) Best Effort BE Asynchronous data Default piconet traffic
1 Background BK Asynchronous data -
2 Excellent Effort EE Isochronous data Service for valued customer
3 Controlled Load CL Isochronous data Traffic conformed to some higher protocol layer admission control
4 Video VI Isochronous data lt 100 ms delay jitter
5 Voice VO Isochronous data lt 10 ms delay and jitter
7 Network Control NC Isochronous data -
Important that we identify emerging applications
and traffic types in 2006 2011 time frame
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Typical Spec For Residential Ethernet
Application Data/Time Guarantee Maximum Latency
Multi-room synchronous audio playback Required 500 µs
Jam Session (live performance) Required 500 µs
A/V Conferencing Required 100 ms round trip including application layer
Source Residential Ethernet, IEEE802.3 Call For
Interest at IEEE Portland Plenary, July 13 04
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FCC Rules

• Average power density 9 µW/cm2 at 3 m
• Peak power density 18 µW/cm2 at 3 m
• Total peak transmitter output power cannot exceed
  500 mW (27 dBm)
• Spur emission specifications
• 960 MHz to 40 GHz 50 µV/m at 3 meters
• 40 GHz to 57 GHz 90 pW/cm2 at 3 meters
• 64 GHz to 200 GHz 90 pW/cm2 at 3 meters

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FCC Rules

• Power density 1 mW/cm2 on the general
  population for 30 minutes averaging
• Transmitter Identification
• Within any one second interval of transmission, a
  transmitter with a peak output power equal to or
  greater than 0.1 mW or a peak power density equal
  to or greater than 3 nW/cm2 at 3 meters, must
  transmit a transmitter identification at least
  once
• FCC Identifier
• Manufacturers serial number
• 24 bytes field programmable data (information to
  assist contacting the operator)