Coexistence Issues within IEEE in 5GHz Band

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Coexistence Issues within IEEE in 5GHz Band
Jim Lansford Chair, IEEE 802 Coexistence Study
Group Jim.Lansford_at_mobilian.com [phone]
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Background

• WLAN (802.11a) and BWA (802.16b/TG4) share the
  unlicensed 5GHz spectrum
• Both use OFDM, but could possibly have different
  modem parameters
• Low U-NII band is indoor only (5.15-5.25GHz)
• Regulations generally allow both WLAN and BWA to
  operate in other bands
• Currently no etiquette in US for band sharing
• In Europe, DFS helps in principle
• No official IEEE position on coexistence of these

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Discussion

• Does DFS in 802.11h solve this problem for WLAN?
• Does 802.16b incorporate a plan to do WLAN sense?
• IEEE needs to have clarity and consensus on band
  sharing so Regulatory can focus on WRC 2003 with
  a single IEEE voice.