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IEEE 802.11 Regulatory Updates

IEEE 802.11 Regulatory Updates. Date: 2009-09-21. Authors:. Abstract. This presentation is to provide updates on some of the IEE 802.11 regulatory issues. Agenda. Regulatory summaries North America European Union Asia Input to ERM TG11 on EN 300 328 v1.8.1.

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IEEE 802.11 Regulatory Updates

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  1. IEEE 802.11 Regulatory Updates Date: 2009-09-21 Authors: Rich Kennedy, Research In Motion

  2. Abstract This presentation is to provide updates on some of the IEE 802.11 regulatory issues. Rich Kennedy, Research In Motion

  3. Agenda • Regulatory summaries • North America • European Union • Asia • Input to ERM TG11 on EN 300 328 v1.8.1 Rich Kennedy, Research In Motion

  4. Regulatory Summary – North America • US – Meeting with Julius Knapp • Nationwide Broadband Plan • Primary focus of OET • Multiple NOIs active • Defining “Broadband” • SmartGrid Technology • Fostering Innovation and Investment in the Wireless Communications Market • The TV White Spaces • Next phase of database definition will open end of September, start of October • Response to reconsideration petitions – early 2010 • DFS certification – waiting for new test profile from NTIA • Canada • Mexico Rich Kennedy, Research In Motion

  5. Regulatory Summary – European Union • ERM TG11 - EN 300 328 revision • EU Digital Dividend Consultation (Closed September 4th) • WG SE21 - Radar Spurious Emissions • EUMETNET asking for relaxation of -100dBc requirement to -60dBc • Edgard presented WFA position that EUMETNET request be rejected • SE21Chair accepted the input; indicated that the project closes in Sept 2010 • WG SE24 - 5GHz RLANs OBA • RLAN community has offered to block 5600 – 5650MHz band OBA • Final report indicates 5600 – 5650MHz OBA only should be blocked • No position taken on terrestrial WLANs in this band Rich Kennedy, Research In Motion

  6. Regulatory Summary - Asia • No updates at this time Rich Kennedy, Research In Motion

  7. Proposal for TG11 • For operation under EN 300 328 rules: A technology neutral limit, based on the maximum average transmitted energy during a busy second, and assuming that peak transmit power limits are unchanged • 10m W operation under EN 300 440 still allowed Rich Kennedy, Research In Motion

  8. Existing Proposal • RLAN manufacturers present during the last TG11 meeting clearly stated that the MU approach only works if duty cycle is further restricted in terms of maximum Tx-on time, minimum Tx-off time, max averaging period, etc… as otherwise a single Duty Cycled system can cause continuous interference into an 802.11 RLAN system. • In order for 802.11 devices to benefit from duty cycled systems, the following should be respected: • Max. Tx-on time: 0.4 mSec • Min. Tx-off time: 0.1 mSec • Averaging time: 4.0 mSec • Maximum duty cycle: 10% Rich Kennedy, Research In Motion

  9. Shortcomings of the Proposal • While the proposed elements of duty cycle may facilitate sharing with 802.11 devices, it may still be incompatible with other technologies, especially those with modulations that do not use constant transmit power, e.g., W-CDMA systems. • Current applications in 2.4 GHz use a wide range of different technologies, each having their own needs w.r.t. maximum Tx-on time and minimum Tx-off time making it impossible to agree on a single set of values that could be beneficial for all technologies. Rich Kennedy, Research In Motion

  10. Alternate Approach • We should offer a variation of the current formula that we believe will suit not only the short range devices, but also protect devices, like 802.11 devices, that have optimized active sharing mechanism • Medium Utilization = Energy in millijoules measured over any 1 second of the complete duty cycle; the limit is • MU < 4 millijoules • Examples • 100 mW for 100 milliseconds (out of 1 second) = 10 millijoules • 10 mW for 1 second (DC – 100%) = 10 millijoules • Compared to the current agreement, the 4 Millijoules represents a lower threshold, but on the other hand, apart from the measuring period of 1 second, no further restrictions are applied on modulation e.g. the Tx-on time and Tx-off time • Joules preferred over ‘Power x Time’ to allow non-constant envelope modulations, or technologies that operate at variable power to benefit from those transmissions where they do not operate at full power. Rich Kennedy, Research In Motion

  11. Conclusions • We believe that this alternative will enable the provisions of Paragraph 4.3.5 Spectrum Sharing Mechanisms to allow SRDs to operate at higher power limits than the current limits of EN 300 440 without causing unacceptable interference into Wideband Transmission Systems that have depended on EN 300 328 for market access for many years. Rich Kennedy, Research In Motion

  12. ERM TG11 Response Timeline Rich Kennedy, Research In Motion

  13. References • FCC 09-31 Notice of Inquiry (http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-09-31A1.pdf) • http://www.broadband.gov/ • FCC 08-260 Second Report and Order and Memorandum and Order (http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-01-260A1.pdf) • 18-09-0091-00-0000-ofcom-update-on-the-digital-dividend-cognitive • 18-09-0089-00-0000-ofcom-update-on-ddr-cleared-award • "Transforming the digital dividend opportunity into social benefits and economic growth in Europe“ (http://ec.europa.eu/information_society/policy/ecomm/radio_spectrum/_document_storage/consultations/2009_digitaldividend/2009_0710_0904_digitaldividendconsultation.pdf ) Rich Kennedy, Research In Motion

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