WNG SC Closing Report Date: 2008-09-10 Authors: September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 WNG SC Closing Report Date: 2008-09-10 Authors: Stephen McCann, Roke Stephen McCann, Roke

September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 Abstract WNG Standing Committee (SC) closing report for September 2008, Waikoloa, Big Island, Hawaii, USA. Stephen McCann, Roke Stephen McCann, Roke

WNG SC Closing Report 5 Presentations this week: September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 WNG SC Closing Report 5 Presentations this week: 11-08-1086r0: "IEEE 802.21 Broadcast Handovers Study Group“ also see 21-08-0258-00-bcst-indoor-coverage-of-dvb.ppt 11-08-1046r0: "WAVE Channel Modeling and The Midamble Insertion Effects“ 11-08-1020r1: "WLAN field trial in high speed moving environment“ 11-08-0973r0: "Security in Wireless Networks: using PHY resources to do better" 11-08-1022r0: "SlyFi: Enhancing 802.11 Privacy by Concealing Link Layer Identifiers" Stephen McCann, Roke Stephen McCann, Roke

IEEE 802.21 Broadcast Handovers Study Group September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 IEEE 802.21 Broadcast Handovers Study Group Target is to use WLAN indoors and enable handovers between 802.11 and DVB IEEE 802.11aa Problem areas Synchronization No IEEE problem, but studies going on... Coexistence ??? (delays) Stephen McCann, Roke Stephen McCann, Roke

WAVE Channel Modeling and The Midamble Insertion Effects September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 WAVE Channel Modeling and The Midamble Insertion Effects WAVE channel modeling Three V2I channels & Three V2V channels Consist of WAVE fading generator & TDL (Tapped delay line) Well matched with the measured data Performance analysis: the effect of midamble inserting rate Midamble channel estimation guarantees the performance enhancement As the modulation size increases As the packet size increases Midamble insertion effect is more critical  Trade-off between the midamble rate & Modulation size/packet size Stephen McCann, Roke Stephen McCann, Roke

WLAN field trial in high speed moving environment September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 WLAN field trial in high speed moving environment IEEE802.11 PHY can be used in high speed moving environment. (> 200km/h) Doppler effect can be ignored. But…. IEEE802.11 MAC has some issues in high speed moving environment especially on handover. (So we used MIS protocol instead of IEEE802.11 MAC.) Stephen McCann, Roke Stephen McCann, Roke

Security in Wireless Networks: using PHY resources to do better September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 Security in Wireless Networks: using PHY resources to do better Amend measurement/management/control to support enhanced low-layer security techniques Detailed information about the channel Additional PHY/MAC control Management communication support Basic algorithm/policy set be defined 802.11 v. 802.1AE? addressing unique challenges/opportunities of wireless Key generation Location/localization based techniques … Stephen McCann, Roke Stephen McCann, Roke

SlyFi: Enhancing 802.11 Privacy by Concealing Link Layer Identifiers September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 SlyFi: Enhancing 802.11 Privacy by Concealing Link Layer Identifiers Wireless devices are becoming personal and pervasive Best practices don’t protect users from simple attacks Long-term linking: tracking, profiling, inventorying Short-term linking: side-channel attacks We need a protocol enhancement to defend against these attacks That removes all identifying bits Stephen McCann, Roke Stephen McCann, Roke

No specific actions or outputs September 2008 doc.: IEEE 802.11-08/1146r0 September 2008 Actions No specific actions or outputs Several presenters will return for the next meeting in November 2008 Stephen McCann, Roke Stephen McCann, Roke