RRTAG Liaison Report IEEE 802.18 802.22

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RR-TAG Liaison ReportIEEE 802.18 - 802.22
2008-05-15
Authors

• gt.

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IMT-Advanced

• Call for IMT-Advanced/Next Generation Networks
  Technology Proposals from IEEE 802 Working Groups
• See 11-08-0624-00-0000-call-for-IMT-Advanced-techn
  ology-proposals.doc

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UWB

• IEEE L802.16-08/030d1- Public consultation on
  Draft ECC Report 120 (Technical requirements for
  UWB DAA (Detect And Avoid) devices to ensure the
  protection of radiolocation in the bands 3.1-3.4
  GHz and 8.5-9 GHz and BWA terminals in the band
  3.4-4.2 GHz)
• This document was approved by 802.18 for
  transmission to the ECC

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Hearing Aids

• 15-08-0356-00 presentation was made on Hearing
  Aids by Starkey Laboratories Joel Solum on their
  need to have 15.247(a)(2) section modified by
  rule making. Currently there is a Waiver on this
  section for 902-928 MHz.

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60 GHz conference calls 802.19 April 2008

• Joel T. Johnson from IEEE Geoscience and Remote
  Sensing Society (FARS committee) and Ohio State
  University raised concern regarding potential for
  interference from 60 GHz 802 devices to passive
  microwave systems on earth observing satellites
  conducting meteorological observations
• https//mentor.ieee.org/802.19/file/08/19-08-0013-
  00-0000-coexistence-issues-for-passive-earch-sensi
  ng.ppt
• In initial coexistence analysis he showed that
  the satellite can only tolerate one device per
  square kilometer transmitting with EIRP of 1 Watt
• Comments on the call included
• Satellite measurement bandwidth is 100 MHz, where
  as 802.15.3c is 2GHz. Difference in bandwidth
  needs to be accounted for
• Calculation assumed device on the ground pointing
  directly up to satellite, need to adjust for gain
  in the direction of the satellite
• Calculation assumed device on the ground has 100
  duty cycle
• There was no account for attenuation from indoor
  to outdoor
• Whether this is a regulatory issue or standards
  issue

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60 GHz conference calls 802.19 May 2008

• Minutes from the 2008 conference calls are
  contained in https//mentor.ieee.org/802.19/file/0
  8/19-08-0014-01-0000-60ghz-conference-call-minutes
  .doc
• Follow up presentation on May 8th
• https//mentor.ieee.org/802.19/file/08/19-08-0013-
  01-0000-coexistence-issues-for-passive-earch-sensi
  ng.ppt
• Corrected a significant equation error satellite
  can tolerate 1000 devices per square kilometer
  transmitting with EIRP of 1 Watt
• Modified equations to include parameters for
• difference in bandwidth between transmitter and
  satellite passive receiver tolerable density
  becomes 20000
• expected transmit antenna properties as well as
  through wall-attenuation, roofing, scattering