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Dave Wright
Advanced Technologies
Update on Unlicensed Spectrum and Wi-Fi
2 CommsDay Summit 2015
Looks can be Deceiving
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Unleashed Access
“Wi-Fi has cemented its position as the dominant wireless access
technology, with cellular playing a vital yet supporting role.” Mike Roberts,
Practice Leader OVUM
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13.8
4219.2
25
Leading in Service Provider Wi-Fi
Ruckus
Vendor Market Share
Cisco
HP
Others
24.4
34.7
11.7
29.2
Ruckus
Cisco
Ericsson
Others
4
10.7
Unit ShipmentsMFG Revenue
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Some of our Operator Deployments
MNO Cable/Fiber Operator Large MSP/WISP
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Simply Better Wireless
THEM US 1.Stronger Wi-Fi signals at longer ranges
2.Adapts automatically to environmental changes
3.More concurrent users per access point
4.Stable connections at higher data rates
5.Unmatched scalability
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A Perfect Storm − Carrier Wi-Fi
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The Value of Unlicensed Spectrumo Wi-Fi has seen unprecedented success o Simple integration – over 10 Billion Wi-Fi enabled devices
o Widespread adoption across virtually every market segment
o Massive scale with ~$140B/year economic impact in US
o LTE is jumping into 5 GHz spectrumo LTE-U, LTE-LAA, LWA
o Fair sharing is the future
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The Future of Spectrumo Spectrum Sharing highly favored by regulatory agencies
o Sharing regimes can provide:o Access Flexibility: e.g. 3.5 GHz Incumbent, priority, and general authorized
o Frequency Flexibility: e.g. Priority access to 10 MHz paired in various areas
o Time Flexibility: e.g. Long-term, short-term, or on-demand
o Sharing regimes require careful coordination
o 3.5 GHz is a high priority for shared access, dense deployments
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LTE in Unlicensed Spectrumo Fair Access is critical to protecting Wi-Fi users and services
o Listen before talk (LBT) is not supported in pre-standard LTE-U proposals
o CSAT is an optional best effort technique
o LBT must be mandatory to ensure fair sharing for LTE-LAA
o Wi-Fi community will lobby for LBT as part of 3GPP standard
o LWA utilizes 802.11 CSMA/CA for medium access
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Digging Deeper
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OPTIONLayer 2
TransportWi-Fi
CoexistenceUnlicensed
BandsStandards
BodyUnlicensedData Boost
UnlicensedRAN Node
LTE-ULTE
E-UTRADuty Cycle(e.g. CSAT)
5 GHz
3.5 GHz?None
Downlink
(SDL)
LTE-U
Capable eNB
LTE-LAALTE
E-UTRALBT
(specifics TBD)
5 GHz
3.5 GHz?
3GPP
(Rel 13 SI)
Rel13 Downlink
Future +Uplink
LAA
Capable eNB
LWA 802.11802.11
CSMA-CA
5 GHz
2.4 GHz*
3GPP
(Rel 13 SI)
Downlink
and Uplink
Wi-Fi AP
with LWA
Common Characteristics
o A Licensed Spectrum “Anchor”
o Unlicensed/Licensed integration is
at the RAN, standard EPC interfaces
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Additional Resources
o Blog Series on proposals for LTE in Unlicensedo www.theruckusroom.net
o FierceWireless webinar on LTE in Unlicensed featuring Ruckus COO Dan Rabinovitsj and Qualcomm Engineering VP Mingxi Fano http://www.fiercewireless.com/offer/april?source=listing
oUpcoming Wireless Broadband Alliance webinar on LTE in Unlicensed featuring speakers from Ruckus and CableLabso http://www.wballiance.com/events/webinars/
