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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
In Situ Frame Size Measurements
March, 2015
Slide 1
Date: 2015-02-26
Name Affiliations Address email Chuck Lukaszewski Aruba Networks 1344 Crossman Avenue
Sunnyvale, CA, 94089 USA
Liang Li
Authors:
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Abstract
• Several contributions to SGhew and TGax [1] [2] [3] [4] and papers in the literature [5][6] have shown that small frames dominate 802.11 traffic for normal use
• This contribution adds in situ measurements of an enterprise office, 70K seat stadium, and IEEE Jan Interim meeting in Atlanta
• Payload size requirements of 802.11 MAC design to exceed >50% of airtime in a TXOP are dangerously unrealistic.
March, 2015
Slide 2
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Tech Company Admin Building
• Date/Time/Duration• 300 people work in building. 40 people within 30 meters
• 02/11/2015, 30 minutes, Wednesday 03:30 pm – 04:00 pm
• Network Configuration• VHT40 on 36+, 44+, 132+, 161+
• Jumbo frames not enabled
• Capture Equipiment• MacBook Pro Retina (3x3 11ac) – Wireless Diagnostics Tool
March, 2015
Slide 3
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Size Distribution by Channels Enterprise Office
(frame size in logarithmic scale)
March, 2015
Slide 4
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Type Distribution by ChannelsEnterprise Office
March, 2015
Slide 5
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
American NFL Football Game
• Date/Time/Duration• Outdoor stadium, 68.5K
• December, 2015
• Capture @ 1PM before gates open, @7:40PM middle of 3rd Quarter
• 13,700 peak concurrent users, 20,100 unique users
• Network Configuration• VHT20 on 36, 52, 100, 108, 149, 165
• Jumbo frames not enabled
• Capture Equipiment• MacBook Pro Retina (3x3 11ac) – Wireless Diagnostics Tool
March, 2015
Slide 6
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Size Distribution by Channels Empty Stadium
(frame size in logarithmic scale)
March, 2015
Slide 7
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Type Distribution by ChannelsEmpty stadium
March, 2015
Slide 8
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Size Distribution by ChannelsIn Game
(frame size in logarithmic scale)
March, 2015
Slide 9
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Type Distribution by ChannelsIn Game
March, 2015
Slide 10
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Jan 2015 IEEE Plenary - Atlanta
• 2 sessions• TGax Day 1 PM1 – 5-GHz
• Midweek Plenary – 5-GHz & 2.4-GHz
• 10 minute captures
• Network Configuration• HT40 on 36+, 44+, 149+, 157+
• Capture Equipment • Windows Laptop, Omnipeek 8.0, NetGear A6210 2x2 11ac USB
March, 2015
Slide 11
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Atlanta Meeting Wi-Fi
March, 2015
Slide 12
• SSID “Hyatt Regency Meeting”
• 2.4-GHz Channels• 1• 11
• 5-GHz Channels• 36+• 44+• 149+• 157+• 165
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Size Distribution by ChannelsTGax Day 1 – 5 GHz
(frame size in logarithmic scale)
March, 2015
Slide 13
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Type Distribution by ChannelsTGax Day 1 – 5 GHz
March, 2015
Slide 14
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Size Distribution by ChannelsDay 3 Midweek Plenary – 2.4 GHz & 5 GHz
(frame size in logarithmic scale)
March, 2015
Slide 15
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
Frame Type Distribution by ChannelsDay 3 Midweek Plenary – 2.4 GHz & 5 GHz
March, 2015
Slide 16
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Submission
doc.: IEEE 802.11-15/0343r0
Chuck Lukaszewski, Aruba Networks
References
[1] 13/1438r0, “Traffic Observation and Study on Virtual Desktop Infrastructure”, L Yingpei, P Barber et al (Huawei), Nov 2013
[2] 14/1144r1, “Simplified Traffic Model Based On Aggregated Network Statistics”, W Carney, K Agardh et al (Sony, Ericsson), Sep 2013
[3] 14/1232r1 “On MU Aggreggation Mechanism for 11ax”, R Hedayat Y Kwon et all (Newracom), Sep 2014
[4] 14/546r1, “Packet Traffic Measurements Around Boulder, Colorado”, J Lansford (CSR), May 2014
[5] “Anatomy of WiFi Access Traffic of Smartphones and Implications for Energy Saving Techniques”, International Journal of Energy, Information and Communication (IJEIC), 3(1):1-16. February, 2012.
[6] “A First Look at Traffic on Smartphones”, IMC '10 Proceedings of the 10th ACM SIGCOMM conference on Internet measurement
March, 2015
Slide 17