Dynamic Multi Level RF Power Month Year doc.: IEEE 802.11-yy/xxxxr0 10 Nov 05 Dynamic Multi Level RF Power Date: 2005-11-10 Authors: Notice: This document has been prepared to assist IEEE 802.11. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <stuart.kerry@philips.com> as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Roger Durand, AutoCell Labs John Doe, Some Company

Month Year doc.: IEEE 802.11-yy/xxxxr0 10 Nov 05 Abstract Dynamic Multi Level RF transmitter power enables optimal power capabilities specifically to increase network capacity thru frequency re-use in adjacent or near adjacent cells. Radio Sensitivity Threshold enables a capability that can be used to increase network capacity by setting the threshold to an optimal level so the physical sensing mechanism will not false detect noise, fringe interference, fringe transmitters for valid packets inside the serving cell. Roger Durand, AutoCell Labs John Doe, Some Company

10 Nov 05 Legacy Power Shaping Usually static/fixed: Capacity at the expense of Coverage All packets at the same back off power, +10dBm actual output (+20dBm capable) No Coverage, no connection Roger Durand, AutoCell Labs

Usually static/fixed: Coverage at the expense of Capacity 10 Nov 05 Usually static/fixed: Coverage at the expense of Capacity All packets at Max power, +20dBm capable Coverage, reduced capacity Roger Durand, AutoCell Labs

Overlapping RF Coverage areas 10 Nov 05 Overlapping RF Coverage areas Ideally an AP would like to set its coverage area only as far as its neighbors AP on the same channel. This is impractical in real world deployments and creates coverage holes Coverage initially is based on management frames Capacity is usually limited by data frames Ideally an AP would like to provide a win-win scenario where it can provide both coverage and increased data capacity APs can sense each other and their clients above the noise floor and can determine in real-time a near optimal power control for its data frames. Roger Durand, AutoCell Labs

Station Aware Power Shaping 10 Nov 05 Station Aware Power Shaping Dynamic power: Pre-association graphic Management +20dBm, Data, +10 dBm both cells Range of Management frames Range of Data frames Coverage, may connect or roam Roger Durand, AutoCell Labs

Station Aware Power Shaping 10 Nov 05 Station Aware Power Shaping Dynamic power: Post association graphic Management +20dBm, Data +20 dBm cell 1, Data +10 dBm cell 2 Cell 1 Cell 2 Coverage, connected Roger Durand, AutoCell Labs

Radio Sensitivity Threshold 10 Nov 05 Radio Sensitivity Threshold Scenario : Power Management +20dBm, Data +15dBm Interferer degrades noise floor 5 dB Interferer Roger Durand, AutoCell Labs

Radio Sensitivity Threshold 10 Nov 05 Radio Sensitivity Threshold Increase sensitivity threshold by 5 dB, to “de-sensitize the receiver” Interferer Decreased receiver coverage zone by 5 dB (physics is dominant) Roger Durand, AutoCell Labs

Radio Sensitivity Threshold 10 Nov 05 Radio Sensitivity Threshold Increase sensitivity threshold by 5 dB, to “de-sensitize the receiver” And Increase Data Power by 5 dB Interferers Decreased receiver coverage by 5 dB Roger Durand, AutoCell Labs

Radio Sensitivity Threshold 10 Nov 05 Radio Sensitivity Threshold Different types of interferers cause different levels of degradation and also have different countermeasures Interferers Roger Durand, AutoCell Labs

10 Nov 05 Motion Motion: “The substantive text IEEE 802/11_05_ 1068r1 MultiRFPower addresses objectives: transmit power control, dynamic multilevel power coordination, energy detection threshold, overlapping RF coverage areas, access point coordination, degradations caused by contention or other issues, advertisement and neighbor learning process is worthy of inclusion in the base draft” Merge= No= Abstain= Roger Durand, AutoCell Labs