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

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MCS Rate ChartSHARKFEST ‘10 | Stanford University | June 14 –17, 2010
MAC layer improvementsFrame Aggregation MechanismsAggregate-MAC Service Data Unit (A-MSDU) wrapsmultiple Ethernet frames in a .11n frame up to 8KBAggregate-MAC Protocol Data Unit (A-MPDU) allowsbursting 802.11 frames up to 64KBA-MPDU is performed in the software whereasA-MSDU is performed in the hardwareBlock AcknowledgementBlock ACK effectively eliminates the need to initiatea new transfer for every MPDUSHARKFEST ‘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 and 6: PHY layer improvementsModified OFDM
Page 7 and 8: Channel Bonding (Channel 6 & 10)Rec
Page 9 and 10: Channel Bonding (configuration)802.
Page 11 and 12: Multi-Streaming Modulation802.11a/g
Page 13: MCS Configuration1 spatial stream 2
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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