1. Importance of Overlapped BSS issue in 802.11ac
Month Year
doc.: IEEE yy/xxxxr0
May 14th, 2009
Importance of Overlapped BSS issue in ac
Authors:
Names
John Doe, Some Company

2. Abstract of doc.:IEEE802.11-09/0565r0
Month Year
doc.: IEEE yy/xxxxr0
May 14th, 2009
Abstract of doc.:IEEE /0565r0
Two possible attractive services are shown, i.e. IPTV and VoIP.
Higher throughput is expected for IPTV while large number of ac devices is expected for VoIP.
80MHz BW is likely to be used in 11ac.
Compared to n, we anticipate
- Larger number of BSSs
- Smaller number of frequency channels
OBSS is more likely to happen in ac compared to n.
Names
John Doe, Some Company

3. Month Year
doc.: IEEE yy/xxxxr0
May 14th, 2009
FTTH service in Japan
Number of FTTH subscribers is around 15 million and it is larger than that of ADSL subscribers. 35
FWA 30
CATV 25
DSL
FTTH 20
Number of subscribers (million) 15 10 5
2002
2003
2004
2005
2006
2007
2008
Year
Names
John Doe, Some Company

4. Expected IPTV Market in Japan
May 14th, 2009
Rapid increase in the number of IPTV subscribers is expected. There is a prediction that there will be more than 3 million IPTV subscribers in 2012. 1 2 3
2008
2009
2010
2011
2012
Number of subscribers (million)
Year
Source：ROA Group, Dec. 2008
Names

5. May 14th, 2009
Difference between currently provided services and future IPTV services TV
Ethernet: wired
Router
ONU
Network
STB
High throughput services usually assumes wired connection so far.
Throughput evaluation of Ethernet is not necessary. .
802.11n/ac TV
Router
ONU
Network
STB
Wireless connection should be assumed even for high throughput services.
Throughput evaluation is needed to select WLAN for router.
How to evaluate the throughput performance at wireless connection part?
Names

6. How ac is used at home
May 14th, 2009
High quality IPTV services are provided by wireless.
We can expect large number of subscribers.
WLAN equipments, which attain stable and high throughput in OBSS, are expected. AP
802.11ac AP
Names

7. Month Year
doc.: IEEE yy/xxxxr0
May 14th, 2009
Conclusions
High quality IPTV service is one of the attractive ones provided by ac devices.
Many people will start to use WLAN for future network services.
Service providers / operators need to evaluate real throughput to choose WLANs for their routers.
Throughput evaluation in OBSS is needed to select WLANs for their routers.
Names
John Doe, Some Company

8. Questions ? May 14th, 2009 Month Year doc.: IEEE 802.11-yy/xxxxr0
Names
John Doe, Some Company

9. Month Year
doc.: IEEE yy/xxxxr0
March 2009
May 14th, 2009
Straw Poll
Do you think that it is important to see how 11ac devices behave in OBSS?
Yes :
No :
Abstain :
Slide 9
Minho Cheong, ETRI and Peter Loc, Ralink
Names
John Doe, Some Company