Transcript
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So#bank WiFi
Ryuji Wakikawa Deputy Director, Network Division, So4bank
Director, Wireline Engineering, Sprint
Available
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FY2010 FY2011 FY2012 FY2013 Public
Home
FY2014
20k APs (ADSL)
200k APs (HSDPA)
450k APs (HSDPA+TD-LTE)
The Number of WiFi AP
Residential Wi-Fi Residential AP
Made by FON
Uplink ・Ether(RJ45) Wi-Fi ・2.4GHz(802.11b/g/n)
Wi-Fi
Fast! Slow.. 3G/LTE
FTTP ADSL CATV
Internet
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Public WiFi
1.7G/ 2.1GHz
1.5GHz 2.5GHz
1.7G/2.1GHz 1.5GHz 2.5GHz 1.7G/2.1GHz 1.5GHz 2.5GHz
Wi-‐Fi Wi-‐Fi
1.7G/ 2.1GHz
1.5GHz 2.5GHz
Traffic Load-‐balancing
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Wi-‐Fi Usage outside Pubic Hotspots
@home Residential Wi-Fi
DaytimeMorning Evening
<3G Traffic Pattern>
outside
@home
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• Higher Speed to compete with LTE
• Higher Quality to improve UX
• More Efficiency to save costs 8
Recent WiFi ObjecLves
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Faster WiFi APs OLD NEW
ResidenLal • 802.11 b/g/n • 2.4GHz • 1x1 MIMO
• 802.11 a/b/g/n/ac • 2.4G/5G • 2x2 MIMO
Short-‐Range • 802.11 a/b/g/n • 2.4G/5Ghz • 2x2 MIMO
• 802.11 a/b/g/n/ac • 2.4G/5G • 2x2 MIMO
Long Range • 802.11 a/b/g/n • 2.4G/5Ghz • 2x2 MIMO
• 802.11 a/b/g/n/ac • 2.4G/5G • 3x3 MIMO
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HSDPA TD-LTE +
HSDPA
Optical Fiber
High UsageLow Usage
High SpeedLow Speed
802.11ac(5GHz) 802.11n(5GHz) 802.11n(2.4GHz)
WiFi Backhaul EvoluLon
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Beacon Adjustment Kickout FilterAssociation Filter
(Wi-Fi Signal Level)
Unstable Unstable
Switch to Cellular Wi-‐Fi a4er stable quality
SoftbankTypical
3G/LTE 3G/LTE WiFi
Typical
So#Bank
Quality Control at WiFi Edge
Web auth
SIM auth (So#bank)
10-‐16 sec
2-‐4sec
Auth Auth
0001so4bank
0002so4bank
No setup required and Transparent connecUvity
Faster AuthenLcaLon (EAP SIM)
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VLAN1 VLAN2 VLAN3
VLAN1 Reduce Handover Ume
VLAN1 VLAN1
10.1.1.1 10.2.2.2 10.3.3.3
10.1.1.1
Random VLAN
Organized VLAN
(So4bank)
10-‐16sec
2-‐4sec
Seamless connecLvity (VLAN)
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EAP SIM
Web auth
Web auth
IntroducUon of EAP-‐SIM Client Access Control @AP
Web auth EAP
SIM EAP-SIM +New AC
EAP-‐SIM & New Controller
Better 81%
Much Better 11%
Much Worse 4% Worse 4%
③User QuesLonnaire Result
92% posiUve answer out of those who felt changes
①Hand-‐over Time
②Offload Traffic
Result of Improvement
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So#bank: Network CoordinaLon
900Mhz
1.7Ghz
2.5Ghz
WiFi
CoordinaLon WiFi Scabering
Today’s So4Bank
WiFi is deployed only where needed.
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Wireless BB with surplus LTE Capacity
TD-‐LTE
LTE-‐CPE • Unlimited • Speed 110Mbps • 4980Yen
So#bank Air
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• How to moneUze our WiFi networks (460K Public, 4.01M ResidenUal)
• Big Data: Time, Space, and Context Analysis • Mobile MarkeLng and AdverLsing
• PotenUal Services • LocaUon Based Service • Traffic Flow Analysis • Venue Analysis • WiFi Data Management PF
WiFi as Services
1. Increase 5GHz Spectrum for Wi-‐Fi: 455MHz > 775MHz 2. Enforce Security for WiFi Spots: User registraUon,
authenUcaUon, and access 3. Variety of Services on best-‐in-‐class WiFi Networks
Towards Tokyo Olympics 2020
LocaLon Based Services Cashless Payment & TickeLng MulL-‐language Support
So#Bank Proposals
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