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

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

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

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

5. WAVE Channel Modeling and The Midamble Insertion Effects
September 2008
doc.: IEEE /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

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

7. Security in Wireless Networks: using PHY resources to do better
September 2008
doc.: IEEE /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
v AE?
addressing unique challenges/opportunities of wireless
Key generation
Location/localization based techniques …
Stephen McCann, Roke
Stephen McCann, Roke

8. SlyFi: Enhancing 802.11 Privacy by Concealing Link Layer Identifiers
September 2008
doc.: IEEE /1146r0
September 2008
SlyFi: Enhancing 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

9. No specific actions or outputs
September 2008
doc.: IEEE /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