Status, Next Steps and Call to Action May 2005 doc.: IEEE 802.11-05/378r0 May 2005 Status, Next Steps and Call to Action Date: 2005-05-12 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>. C. Wright, Azimuth Systems C. Wright, Azimuth Systems

May 2005 doc.: IEEE 802.11-05/378r0 May 2005 Abstract This is a summary of progress within TGT. It closes with a call to action. C. Wright, Azimuth Systems C. Wright, Azimuth Systems

Current Status Created draft 0.1 of our output document! May 2005 Current Status Created draft 0.1 of our output document! Available on 802.11 web site in members area Contains some definitions that have had substantial discussion Approved guidelines document in Atlanta meeting 11-04/1553r3 Discussed document structure several times Most recent is 11-05/296r0 Developed a test template document Most recent is 11-04/1540r1 C. Wright, Azimuth Systems

What else have we done? Discussed a framework for methodology May 2005 What else have we done? Discussed a framework for methodology Most recent: 11-05/177r0 Discussed various metrics See list in later slide Lots and lots of discussion about test environments C. Wright, Azimuth Systems

May 2005 What affects wireless performance? Have we discussed metrics for all these effects? C. Wright, Azimuth Systems

Presentations that have discussed metrics relevant to TGT May 2005 Presentations that have discussed metrics relevant to TGT Layer 2 metrics (11-04/1226r1, 11-05/033r0) Throughput, forwarding rate, loss, latency, jitter, others Rate vs. Range (11-04/1397, 11-05/033r0) Or other link layer parameters vs. range Rate adaptation (11-04/1466r1) BSS transition time (11-04/989r1) AKA “roaming time” Adjacent Channel Interference (11-04/215r0) Diversity (11-05/194r0) Antenna performance (11-04/092r1? 11-04/1402r0?) C. Wright, Azimuth Systems

Correlation among Test Environments May 2005 Correlation among Test Environments Lots of discussion on the various possible test environments Isolated, conducted, controlled, over-the-air, “real-world”, etc… Still some disagreement on the various names for these environments Haven’t been able to quantify a correlation between them Should we simply describe test methodologies to be used in each test environment? This would enable test engineers to perform the correlation C. Wright, Azimuth Systems

Correlation with Application Performance May 2005 Correlation with Application Performance Voice application We’ve seen several presentations discussing this Do we have agreement on use of E model as voice quality measure that drives wireless metrics? Video application Have had one presentation on the subject No discussion of an objective quality measure – fertile ground for a literature search Data application What are the measures relevant to a data application? Presumably throughput, anything else? Would be good to have some theoretical backing here Other applications, or other metrics specific to wireless that impact the applications? C. Wright, Azimuth Systems

Call to Action We need further development of the metrics May 2005 Call to Action We need further development of the metrics Let’s have proposals that describe the test methodology with the proposer giving the environment that is needed Further discussion will tell whether other test environments are pertinant or important I would like to get volunteers to “own” various metrics Please write a proposal! C. Wright, Azimuth Systems