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Regulatory Impact on 802.11 Deployment in the United States - or - Non-commercial deployment of un-licensed radio networks will be more successful than commercial Tim Pozar BAWUG. 1] I am not a lawyer. 2] I am a co-founder of a community wireless network. Disclaimer:. Objectives.

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  1. Regulatory Impact on 802.11 Deployment in the United States- or -Non-commercial deployment of un-licensed radio networks will be more successful than commercialTim PozarBAWUG

  2. 1] I am not a lawyer. 2] I am a co-founder of a community wireless network. Disclaimer:

  3. Objectives • What are the US regulatory issues on deploying 802.11 large scale wireless networks? • What can be done to mitigate the issues? • What future developments that can impact a wireless network? • Does not cover the technical scaling issues of 802.11 protocols or spectrum and power limitations.

  4. FCC's Equipment Labeling Requirements... Typically the only way an end-user is introduced to the FCC... “This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.” - FCC Part 15.19

  5. Biggest Issue • This label touches on the biggest impediment to large investments in 802.11 deployment. • FCC Part 15.5 defines the priority of part 15 devices to other users of the band and how part 15 devices need to correct interference with them and other users.

  6. FCC Rules & Regulations - Part 15.5(b) “Operation of an intentional, unintentional, or incidental radiator is subject to the conditions that no harmful interference is caused and that interference must be accepted that may be caused by the operation of an authorized radio station, by another intentional or unintentional radiator, by industrial, scientific and medical (ISM) equipment, or by an incidental radiator.” - FCC Part 15.5(b)

  7. The Impact of Part 15.5: • Owners of wireless networks covered by 15.5 have no legal standing under FCC's rules to require interfering devices to shut down. One could deploy hundreds of thousands of dollars of wireless equipment that can be rendered ineffective if an other user of the band starts to transmit. • Owners and operators of part 15 networks must shut down immeaditly (15.5(c)) once contacted by a representative of the FCC and stay off the air until the problem is corrected.

  8. Interference with other 802.11b Channels as they overlap... • Internal frequency coordination is required.

  9. Other users of 2.4 Ghz... • Part 18 – Industrial, Scientific and Medical • Part 74 – Broadcast Auxiliary • Part 90 – Land Mobile Radio Service • Part 97 – Amateur Radio • Part 101 – Fixed Microwave Services • Federal Usage – NTIA/IRAC

  10. Equipment Certification • Part 15 equipment is designed to be used by the general public. • Equipment is certified as a "system" can not be mixed and matched with other equipment • Possible to re-certify equipment for your configuration

  11. A Possible Option to Certification • Special Temporary Authority (STA) • Experimental License • Used for temporary experimentation • Narrow range of uses

  12. Human Exposure of Radio Frequency Radiation • Pseudo-scientific groups may be a factor. • As you become more "visible" you will get on their "RADAR". • The FCC will enforce RFR exposures by requiring RFR studies before licensing • The standards that the FCC has accepted allows exposures to "staff" and "general public".

  13. The Future - "Good and Bad News" • New standards will help with interference. • 802.11h; 802.15; 802.16 • RF Lighting • Made by Fusion Lighting Inc. www.fusionlighting.com • Sirius' FCC Application • Limit out-of-band signals (2320-2345MHz) to 8.6microvolts/meter at 3 meters. • Retracted but doesn't mean others will try.

  14. The Future (cont...) • Who else may be gunning for you? • ARRL • NTIA/IRAC has some concern. Likely they have abandoned the channels except for high power applications. • 3G license holders • Any users can affect you through the FCC's R&R

  15. Conclusions • Expensive network deployment based on 802.11 can be risky as you have no rights or priorities. • Coordinate with other users. • A properly designed network will survive longer. • Other issues can affect you like FCC Rules changes or pressure to get the FCC to enforce. Be active in watching and changing the FCC's Rules!

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