1| FCC Model City Workshop | MMB |April 15, 2014COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED.

Technologies for 3.5 GHz Shared SpectrumMilind M. Buddhikot Wireless ResearchAlcatel-Lucent Bell Labs

Because expressing how dumb that was in words just doesn’t work

COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED | FCC Model City Workshop | MMB | 2

End-to-End Architecture for 3.5 GHz

Small Cellwith Spectrum Sensor and Operting

in PAL and GAAbut no licensed band support

Location 12

Location 83

Location 3 2Location 47

Other Fiber, CableOperators

Federal Xmitters

2

Federal SAS

12-Way APIWith Information

Obfuscation

Commercial SAS Federal SecureNetwork

Loc5 Loc6Loc7

Domain SAS Proxy

Small Cellwith Spectrum Sensor and Operting

in PAL and GAAwith or without

licensed band support

Buildingswith Small Cells

T1 T2Spatial map SensorSamples

OperatorRAN SON Server

Sensing information Sharing API

3

Location 1

Macro Cell

Small Cellwith Spectrum Sensor

and Operting in PAL and GAA Location 2

Location 5

Location 3Location 4

Sensor samples@ Location 5

Cellular OperatorCore

4

Internet

3 | | FCC Model City Workshop | MMB || COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED.

Alcatel-Lucent 3.5 GHz Network Platform for Research and Testbed

NetworkALU Single BoxvEPC (LTE-in-a-Box)

Bell Labs Dynamic SASPrototype

X

X

3.5 GHz PrototypeSmall Cell 11ac Wi-Fi

in 3.5 GHz

TD-LTE inin 3.5 GHz

TD-LTE3.5 GHz PAL

3.5 GHzWi-Fi GAA

US NAVY

Naval Radar

ALU BL PTASS Protocol

PTASS = Protocol for Tiered Access to Shared Spectrum

4 | | FCC Model City Workshop | MMB || COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED.

Demo System: Bell Labs 3.5 GHz SAS Architecture

C-SAS Server(Ubuntu Linux)F-SAS Server

Emulator(Java App)

CBSD Emulator(Java App)

Internet

CBSD Emulator(Java App)

- Integrate with OpenStack for system scalability (Open Source Cloud Operation System)

- Manage CBSDs and Incumbents- Handle requests from CBSDs- Allocate shared spectrum dynamically

CBSD 3.5 GHz

Prototype

Signaling PTASS

Signaling PTASS

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Notes

Our SAS supports

­ Activation of exclusion zone for a spectrum chunk

­ Vacating of CBSDs operating in an interrupted spectrum chunk

­ Reassignment of channels to CBSDs

­ Tiered access

­ Aggregation of sensing data

Our testbed supports novel band aggregation to achieve high capacity

Support for DTV (470-700 MHz whitespace) and other bands feasible

6 | | FCC Model City Workshop | MMB || COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED.

Conclusions

Alcatel-Lucent Bell Labs has developed an end-to-end platform and testbed for shared spectrum use in future wireless networks

­ Demonstrates sharing and aggregation of spectrum bands

At-scale explorations are critical to proving how well spectrum sharing will work in federal spectrum

­ Such proof essential for incumbents to be reassured of protection and for a viable business case for secondary network

­ Needs joint exploration with incumbent

­ Alcatel-Lucent Bell Labs can be a key partner in such exploration