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Wireless Performance Predictions & Variables Discussion

Explore system, radio, and transmission variables for wireless networks. Analyze device ratings, application benchmarks, and client performance. Join the teleconference to discuss WPP agenda.

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Wireless Performance Predictions & Variables Discussion

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  1. WPP SG Telecon Agendafor26 Feb 2004 Charles R. WrightAzimuth Systems charles_wright@azimuthsystems.com C. Wright, Azimuth Systems

  2. Agenda • Appointment of telecon secretary • Approval of minutes from 19 Feb telecon • Results of email reflector poll • Discussion of “Slide 7” (now slide 4 :-) C. Wright, Azimuth Systems

  3. Results of Reflector Poll C. Wright, Azimuth Systems

  4. Scope and Purpose of WPP? We must choose some subset of the whole spectrum, or we’ll never finish • Overall system performance predictions • Coverage • Capacity • System Level Network Variables • AP throughput, forwarding rate under load • Usage context, application • System performance in failover siutations • Association speed… • Client/AP Device Level Network Variables • Single client forwarding rate, latency performance • Roaming time, others… • Device Ratings • Consumer product ratings • Application benchmarks, e.g., VoIP, video… • Transmission Variables • RF path loss • Multipath/fading • EM environment noise • Interference • Radio Variables • Antenna loading • Environmental • Host EMC, power variation • Device Specifications • Receiver sensitivity • Transmitter power • Antenna pattern • DC power consumption • Host CPU utilization * An incomplete listing of potential parameters and metrics C. Wright, Azimuth Systems

  5. Transmission Variables • Discussion C. Wright, Azimuth Systems

  6. Radio Variables • Discussion C. Wright, Azimuth Systems

  7. Client/AP Device Level Network Variables • Discussion C. Wright, Azimuth Systems

  8. System Level Network Variables • Discussion C. Wright, Azimuth Systems

  9. WPP Document List C. Wright, Azimuth Systems

  10. Docs presented in Telecons(19 Feb 04 to 11 Mar 04) • 11-04-0187-00-0wpp-telecon-agenda-19-feb-04.ppt • 11-04-0213-00-0wpp-telecon-agenda-26-feb-04.ppt C. Wright, Azimuth Systems

  11. Jan 2004 802.11 Meeting (Vancouver) Presentations • 11-04-0038-00-0wpp-ieee-802-11-study-group-overview-2004.ppt • 11-04-0091-00-0wpp-wpp-project-background-&-roadmap.ppt • 11-04-0072-01-0wpp-optimization-parallels-with-cdma-cellular-pcs-industry.ppt • 11-04-0092-00-0wpp-ctia-over-air-test-standard.ppt • 11-03-0928-00-0wng-wpp-approaches-to-issue.ppt • 11-03-0930-00-0wng-wpp-user-experience.ppt C. Wright, Azimuth Systems

  12. Nov 2003 802.11 (Albuquerque) Presentations • Presented within the Wireless Next Generation standing committee • 11-03-0927-00-0wng-wpp-introduction-&-overview.ppt • 11-03-0928-00-0wng-wpp-approaches-to-issue.ppt • 11-03-0929-00-0wng-wpp-summary-work-plan-&-proposal.ppt • 11-03-0930-00-0wng-wpp-user-experience.ppt • 11-03-0931-00-0wng-wpp-simulating-field-performance.ppt • 11-03-0933-00-0wng-rf-performance-testing.ppt C. Wright, Azimuth Systems

  13. Early WPP Telecon Presentations • These presentations were made prior to the formation of the 802.11 WPP SG, and can be found on EMC Society WPP web site, maintained by S. Berger: • Factors Affecting Performance, F. Mlinarsky • Standard Methods for Predicting Wireless Performance, P. Canaan, P. Ellis • CTIA Standard for Over-The-Air Testing of Wireless Devices and Field Map Movies, M. Foegelle • RDI's Approach to Performance Prediction, K. Britain • Azimuth Test Configuration, F. Mlinarsky • Test Methodology, F. Mlinarsky C. Wright, Azimuth Systems

  14. Backup Information C. Wright, Azimuth Systems

  15. Teleconference Info • Date: February 26, 2004 • Time: 11 AM Eastern time (1600 UT) • Duration: 1 hour • Phone #  1-877-842-9288 • International: +1-847-597-8068 • Passcode: 827 235 • Next: February 26, 2004 C. Wright, Azimuth Systems

  16. Email Reflector • Original reflector: stds-wpp@ieee.org • Set up under aegis of EMC Society (S. Berger) • 802.11 reflector: stds-802-11@ieee.org • Requires 802.11 membership to send to it • Can be monitored through 802.11 web site • 802.11 rules require all SG communication to be through reflector • This presents a problem for many of original WPP participants • I encourage people to join 802.11! C. Wright, Azimuth Systems

  17. References for 802.11 Newcomers (1 of 2) • Web site: • http://grouper.ieee.org/groups/802/11/ • Document server: • http://www.802wirelessworld.com/ • Sign up for an account • No need to be an 802.11 member to get an account • Once logged in, “join” 802.11: • Click on “802.11 WLAN WG” on left • In center window, choose to become a new member • Click again on “802.11 WLAN WG” • An additional subitem called “Documents” will be revealed – click on it • You’ve reached the document server! C. Wright, Azimuth Systems

  18. References for 802.11 Newcomers (2 of 2) • Document numbering scheme • WG-YY-NNNN-RR-gggg-English-document-title.ext • WG = 802 working group number, e.g. “11” as in 802.11 • YY = two digits of year • NNNN = document number • RR = document revision number • gggg = 802.11 group to which the document pertains • Example: • 11-04-0187-00-0wpp-telecon-agenda-19-feb-04.ppt C. Wright, Azimuth Systems

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