Andy Gowans Private Business Systems Unit Radiocommunications Agency

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Andy GowansPrivate Business Systems
UnitRadiocommunications Agency

andy.gowans_at_ra.gsi.gov.uk
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Structure of the presentation

• UK Sharing activities update
• Existing Users in 5.8GHz Band
• Results of Sharing Analysis So far
• Effect UK VNS
• CEPT SE38
• TOR SE 38
• UK Preparation
• membership requirements
• 5GHz Band C Next Steps

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WLAN Advisory Group (WAG) Sharing Activities
update
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Tasks

• Produce a report of FWA sharing with other
  services in band C.
• Produce draft UK contributions (to be processed
  through the normal RA committees) for potential
  CEPT sharing studies
• Develop a strategy on how to promote the findings
  of the sharing study.
• Identify bottlenecks and propose resolutions
  concerning the finalisation of DFS parameters /
  values / implementation etc...

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Priorities

• Sharing (Incumbent Users)
• Radar
• FSS
• RTTT
• ENG/OB

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Sharing with Radar

• Similar situation to band B
• DFS
• -67dBm for devices greater than 1 W
• could change...
• Sharing is possible
• MOD have asked for exclusion zones around
  operational sites (less than 10).

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Sharing with FSS

• Need to limit the numbers of FWA or the EIRP
  towards the satellite
• So far sharing seems feasible for a 2W EIRP TPC
  FWA transmitter
• We are expecting more sharing work for higher
  power systems
• EIRP spectral density mask to be defined
• TPC
• at least 12dB dynamic range

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Sharing with RTTT

• Need to protect the Road Side Unit
• more work is required
• Very low threshold detection required and will
  need to be looked at
• TPC
• Notch out the RTTT band (20MHz) simple solution

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Sharing with ENG/OB

• there is a need to protect some receiving sites.
• Do we need to protect all 3 channels at each
  site.
• Is DFS useful for protecting P-P FDD systems
• effect of TPC on results

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Sharing with SRDs

• more work is required taking into account
• indoor only SRD use
• effect of TPC
• SRD parameters taken from UK IR 2030-EN 300 440

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Impact on UK VNS

• DFS needed
• TPC required
• EIRP spectral density mask required to protect
  satellites (final mask still under debate)
• Exclusion zones needed for MOD/ENG OB
• channel plan?
• MAX E.I.R.P. or PSD?

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Next...

• Draft report to be completed shortly which will
  give initial results.
• more sharing work expected
• on whether Higher power with more directional
  antenna possible
• alternative EIRP spectral density mask
• ENG/OB and RTTT
• SRDs
• Need to provide recommendations into UK Voluntary
  National Specification
• Need to provide results and analysis to UK
  preparation for SE 38

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UK Preparation for SE38
Written by Steve BondRA1 / International Policy
UnitRadiocommunications Agency
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Terms of reference for SE38Compatibility studies
between the licence exempt Fixed Wireless Access
(HIPERMAN) system and other radio services

• Chairman Tony Buckley, Ireland
• Any output document of SE38 will not be issued
  outside WGSE until after July 2003

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• Under WGSE, SE38 shall carryout compatibility
  studies in the band 5725-5875MHz between the
  Fixed Wireless Access systems (as described by
  the SRDoc provided by ETSI TR10279) and other
  services such as
• The Radiolocation Service
• RTTT
• Fixed Service (Point to Point Links)
• Fixed Satellite Service
• General SRDs introduced within Recommendation
  70-03
• Amateur service and amateur satellite service

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UK preparation for SE38

• A UK briefing group is to be created, chaired by
  Steve Bond, who will lead the UK delegation in
  SE38
• UK SE38 is open to participation from UK
  registered companies with a substantial UK
  presence
• SE 38 participation is open to any ETSI members
  (observers only)

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UK SE38 duties

• Preparation of UK contributions to SE38. It is
  expected that this will mostly consist of the
  sharing studies on which UK policy has been based
• Preparing a UK view for SE38 meetings, taking
  account of other relevant UK groups
• Reports to UK WG SE, including proposing the UK
  line to be taken in WG SE on SE38 issues

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Work of UK SE38

• The first meeting of UK SE38 will be shortly
  before the first SE38 meeting
• Subsequent work will be conducted by
  correspondence, as far as is possible
• For more information please contact
• Steve Bond, stephenbond1_at_compuserve.com

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5GHz Band C next steps

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In order to obtain final clearance to use band C
for FWA in the UK sharing analysis needs to be
completed on existing services. There will be
conditions.
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Conditions for FWA use of Band C

• MoD approval essential
• Concerns over Road Transport and Traffic
  Telematics to be addressed
• Continued access to useful spectrum for ENG-OB to
  be addressed
• FWA/FSS sharing issues addressed,
• Introduction of light Licensing regime essential
  in the beginning.

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MoD Approval

• Exclusion zones around MoD installations
• Maximum EIRP of 2 Watts
• Mandatory use of DFS and TPC
• Access to spectrum is regulated by means of a
  licensing scheme

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Other services

• Studies so far indicate that some of the
  technical measures proposed will satisfy the most
  requirements of RTTT, FSS and ENG-OB users of
  the band.
• But there may be some operational restrictions on
  all the services involved needed.

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E-licensing

• Looking to open this band for Fixed services on a
  light licensing basis
• Working towards a fully electronic interface with
  as near immediate approval as possible
• Interface will be simple and will allow batch
  processing
• May have instructions on how to licence systems
  as mandatory in equipment.

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Next steps

• Obtain final approval for FWA in this band
• Complete UK VNS and send to European Commission
  for 3 month standstill process
• Complete the e-licensing interface
• Hold final 28 day consultation on the whole
  package
• Open band C for Fixed Services

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Questions?

• See RA Website for latest info on 5GHz bands and
  update on WAG activities
• www.radio.gov.uk