A-10 (Leutert) WLAN 802.11n MIMO Analysis - Sharkfest - Wireshark
A-10 (Leutert) WLAN 802.11n MIMO Analysis - Sharkfest - Wireshark A-10 (Leutert) WLAN 802.11n MIMO Analysis - Sharkfest - Wireshark
Session Agenda• Design Goals for 802.11n• IEEE 802.11n physical layer improvements• IEEE 802.11n MAC layer improvements• Per-Packet Information Header• Analysing ‘Bad BAR’ and ‘Deadlock’ problem• Bandwidth Measurement• Backwards compatibility to a/b/g• Future of 802.11nSHARKFEST ‘10 | Stanford University | June 14 –17, 2010
Design Goals for 802.11n• IEEE 802.11n is a proposed amendment to the IEEE802.11-2007 wireless networking standard• Significantly improve PHY layer transmission rateover previous standards, such as 802.11a and802.11b/g with ‘High Throughput’ (HT) options• Increasing the MAC layer transfer rate to achieve aminimum of 100 Mbps data throughput• Maintain backward compatibility with existing IEEEWLAN legacy solutions (802.11a/b/g)SHARKFEST ‘10 | Stanford University | June 14 –17, 2010
- Page 1: WLAN 802.11n MIMO AnalysisJune 17,
- 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 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
Session Agenda• Design Goals for <strong>802.11n</strong>• IEEE <strong>802.11n</strong> physical layer improvements• IEEE <strong>802.11n</strong> MAC layer improvements• Per-Packet Information Header• Analysing ‘Bad BAR’ and ‘Deadlock’ problem• Bandwidth Measurement• Backwards compatibility to a/b/g• Future of <strong>802.11n</strong>SHARKFEST ‘<strong>10</strong> | Stanford University | June 14 –17, 20<strong>10</strong>
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