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The First End-to-End Live Trial of CBRS with Carrier Aggregation Using 3.5 GHz LTE Equipment.

  • March 2017
  • Conference: 2017 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)
  • At: Baltimore, MD, USA
Authors:
Marko Palola at Kaitotek Oy
Marko Palola
  • Kaitotek Oy
Vesa Hartikainen at Nokia
Vesa Hartikainen
Marko Mäkeläinen at Fujitsu Ltd.
Marko Mäkeläinen
Tero Kippola
Tero Kippola
Tero Kippola
  • This person is not on ResearchGate, or hasn't claimed this research yet.
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Abstract

This paper presents the first end-to-end field trial of the U.S. three-tier Citizens Broadband Radio Service (CBRS) with carrier aggregation using commercial 3.5 GHz network elements in a live LTE-A test network. The trial features an assignment of a shared spectrum to an operational LTE base station and demonstrates how it boosts the end user mobile data rate due to extended bandwidth availability. The field trial is important as it shows that a spectrum access system can be implemented utilizing existing network systems and latest technologies. The field trial allows studying the operation of a real system and comparing the performance to the relevant FCC requirements and particularly those related to different response times between the LTE-A network and CBRS.
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The First End-to-End Live Trial of CBRS with Carrier
Aggregation Using 3.5 GHz LTE Equipment
Marko Palola
VTT Technical Research Centre of Finland Ltd, Oulu, Finland
Marko.Palola@vtt.fi
CORE++ Cognitive Radio Trial Environment Project
http://core.willab.fi
Part of the Tekes 5thGear programme and 5GTNF
The First End-to-End Live Trial of CBRS with Carrier
Aggregation Using 3.5 GHz LTE Equipment
Citizens Broadband Radio Service / Spectrum Access System
Commercial Mobile Operator equipment: TD LTE-A base stations, LTE core
network and network management system (NMS)
Live trial uses licensed spectrum (10MHz) as a basic broadband service and
when available from SAS tops up with dynamical spectrum (10Mhz)
Three LTE-A base stations and 18 simulated base stations
A laptop with QoS measurement is connected over the live trial.
Citizens Broadband Radio Service /
Spectrum Access System
CBRS / SAS is defined and standardized by
the Wireless Innovation Forum (WInnF) and
the Federal Communications Commission’s
(FCC).
In CBRS, the spectrum sharing is managed by
SAS.
SAS enforces
Incumbents protected from interference/free
access to band (sensing / restrictions)
PA users protected from other PA users and
GAA users
GAAs not protected
Field trial uses 3550-3590MHz, four
10MHz channels.
3
CORE++ http://core.willab.fi/
Operator LTE Core and Management Network
Nokia, Espoo/Tampere, Finland
CBSD-2
CBSD-1
SAS Trial
Component
CBSD-3
PA
Priority Access
GAA
General Authorized
Access
VTT, Oulu, Finland
SAS
LTE-A 3.5GHz Test Network
Centria, Ylivieska, Finland
SAS Algorithm
Spectrum Optimisation
CWC, Oulu, Finland
NetAct Network Managent System
CBRS Domain Proxy Eden-Net (SON Platform)
Radar Sensing System
TUAS, Turku, Finland
Carrier Aggregation
Field trial: Architecture
CORE++ http://core.willab.fi/
CORE++ has setup a
unique live LTE test
network with commercial
4G/LTE-A
CORE++ http://core.willab.fi/
Operator LTE Core and Management Network
Nokia, Espoo/Tampere, Finland
CBSD-2
CBSD-1
SAS Trial
Component
CBSD-3
PA
Priority Access
GAA
General Authorized
Access
VTT, Oulu, Finland
SAS
LTE-A 3.5GHz Test Network
Centria, Ylivieska, Finland
SAS Algorithm
Spectrum Optimisation
CWC, Oulu, Finland
NetAct Network Managent System
CBRS Domain Proxy Eden-Net (SON Platform)
Radar Sensing System
TUAS, Turku, Finland
Carrier Aggregation
Field trial: Architecture 1) ESC determines availability of shared
spectrum based on collected occupancy
information (frequency, bandwidth, power)
2) SAS Repository gathers data about
spectrum use and base stations.
3) Domain Proxy and stand-alone base
station connect to CBSD Manager for
shared spectrum access (REST API).
4) SAS Algorithm for channel allocations
nd optimizations
5) DP uses NMS to configure the base
station accordingly.
6) End user device detects Carrier
Aggregation
CORE++ http://core.willab.fi/
Four views are shown in the demonstration
CBRS visualisation
Domain Proxy
End user QoS view
Radar Sensing system
Demonstration
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
The First End-to-End Live Trial of CBRS
with Carrier Aggregation Using 3.5 GHz
LTE Equipment
CBRS Visualisation
CORE++ Cognitive Radio Trial Environment Project
http://core.willab.fi
Part of the Tekes 5thGear programme and 5GTNF
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
The SAS Demo features
three PAL channels
and GAA channel The map shows both live
and simulated base
stations (SAS Users).
All are small cells with
360 degree antennas
The state of three live
TD-LTE base stations is
shown here.
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
CBDS-2 uses 10MHz
licensed band and 10
MHz SAS band for
carrier aggregation.
All three commercial
TD LTE-A base stations
are on-air, two are GAA
SAS users
Carrier Aggregation is
enabled, the mobile
user transfers data at
63Mbps based on live
measurement
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
The three commercial
live LTE-A CBRS users
are in the middle
Grey small cells are 18
simulated SAS PA and
GAA users in neighbour
census tracts
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
The First End-to-End Live Trial of CBRS
with Carrier Aggregation Using 3.5 GHz
LTE Equipment
DOMAIN PROXY
CORE++ Cognitive Radio Trial Environment Project
http://core.willab.fi
Part of the Tekes 5thGear programme and 5GTNF
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
CBSD-2 cell with carrier
aggregation is shown
as deplyed and
authorized cell.
The Domain Proxy is
developed on Network
Management System
as a SON module.
The licenced band cell
of CBSD-2 is not under
DP control. The another
sector depicts CBSD-1
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
The First End-to-End Live Trial of CBRS
with Carrier Aggregation Using 3.5 GHz
LTE Equipment
RADAR SENSING SYSTEM
CORE++ Cognitive Radio Trial Environment Project
http://core.willab.fi
Part of the Tekes 5thGear programme and 5GTNF
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
Occupancy scanner is
used to detect
presence of signal in
SAS band
On positive detection
we communicate an
ESC Alert to SAS
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
Signal generator is on
PAL 1 channel
(3551MHz)
•Pulse repetition
frequency 1 kHz
•Pulse width 0.9 µs
•Antenna scan rate 15
RPM
•Antenna beam width
1.8 degrees
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
The First End-to-End Live Trial of CBRS
with Carrier Aggregation Using 3.5 GHz
LTE Equipment
Mobile user QoS and LTE-A CA Cell
CORE++ Cognitive Radio Trial Environment Project
http://core.willab.fi
Part of the Tekes 5thGear programme and 5GTNF
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
Live performance
measurement in the
LTE-A test network
Mobile user data
connection is measured
over TD LTE-A access
(CBSD-2)
VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD
CBSD-2 provides
Carrier Aggregation to
Mobile User
Live measurement
shows details about the
LTE connection
Evolution of the Spectrum Sharing Trials
in the CORE, CORE+ and CORE++ projects
The First End-to-End Live Trial of
CBRS with Carrier Aggregation Using
3.5 GHz LTE Equipment
For further information, please visit
the CORE++ project website:
http://core.willab.fi
Project Manager: Pekka.Aho@vtt.fi
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  • Apr 2022
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