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 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.

Field trial: Architecture CORE++ http://core.willab.fi/ CORE++ http://core.willab.fi/ CORE++ has setup a unique live LTE test network with commercial 4G/LTE-A

Field trial: Architecture CORE++ http://core.willab.fi/ CORE++ http://core.willab.fi/ ESC determines availability of shared spectrum based on collected occupancy information (frequency, bandwidth, power) SAS Repository gathers data about spectrum use and base stations. Domain Proxy and stand-alone base station connect to CBSD Manager for shared spectrum access (REST API). SAS Algorithm for channel allocations nd optimizations DP uses NMS to configure the base station accordingly. End user device detects Carrier Aggregation

Demonstration Four views are shown in the demonstration CBRS visualisation Domain Proxy End user QoS view Radar Sensing system

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

The state of three live TD-LTE base stations is shown here. 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

are on-air, two are GAA SAS users 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

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

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

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

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

On positive detection we communicate an ESC Alert to SAS Occupancy scanner is used to detect presence of signal in SAS band

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

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

Live performance measurement in the LTE-A test network Mobile user data connection is measured over TD LTE-A access (CBSD-2)

Live measurement shows details about the LTE connection CBSD-2 provides Carrier Aggregation to Mobile User

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