A-10 (Leutert) WLAN 802.11n MIMO Analysis - Sharkfest - Wireshark

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PHY layer improvements (cont.)Shorter Guard Interval (GI)The GI between OFDM symbols is reduced from800ns to 400ns and increases throughput from65 to 72.2 MbpsChannel BondingDoubling channel bandwidth from 20 to 40 MHzslightly more than doubles rate from 72.2 to 150 MbpsSpatial multiplexingSupport of up to four spatial streams (MIMO)increases throughput up to 4 times 150 to 600 MbpsSHARKFEST ‘10 | Stanford University | June 14 –17, 2010
Channel Bonding (Channel 6 & 10)Recorded with Wi-Spy® from MetaGeekSHARKFEST ‘10 | Stanford University | June 14 –17, 2010
Page 1 and 2: WLAN 802.11n MIMO AnalysisJune 17,
Page 3 and 4: Design Goals for 802.11n• IEEE 80
Page 5: PHY layer improvementsModified OFDM
Page 9 and 10: Channel Bonding (configuration)802.
Page 11 and 12: Multi-Streaming Modulation802.11a/g
Page 13 and 14: MCS Configuration1 spatial stream 2
Page 15 and 16: MAC layer improvementsFrame Aggrega
Page 17: A-MSDU AnalysisAll trace files made
Page 20 and 21: Block-ACK MechanismRather than send
Page 22 and 23: Block-ACK Bitmap AnalysisSHARKFEST
Page 24 and 25: Block-ACK negotiation/activationThe
Page 26 and 27: New HT Capabilities in Beacon Frame
Page 28 and 29: Per-Packet Information Header (cont
Page 30 and 31: AirPcap Nx and WiresharkAirPcap Nx
Page 32 and 33: Analysing ‘Bad BAR’ problemSHAR
Page 34 and 35: Analysing ‘Deadlock’ problemPro
Page 36 and 37: Analysing ‘Deadlock’ problem (c
Page 38 and 39: Backwards compatibility to a/b/gPre
Page 40 and 41: Backwards compatibility to a/b/g (c
Page 42 and 43: Future of 802.11nStandard has been

A-10 (Leutert) WLAN 802.11n MIMO Analysis - Sharkfest - Wireshark

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