CBRS ACTUAL FINALS QUESTIONS AND ANSWERS
SURE A+
✔✔What is the main responsibility of the CPI? - ✔✔To make sure that all CBRS
transmitting equipment is correctly registered with the SAS and that all information
being sent to the SAS is accurate.
✔✔What are the 4 main incumbents and what frequency do they operate at? -
✔✔Military ship-borne radar - 3550 to 3650
Military ground based radar - 3550 to 3700
Fixed satellite service earth stations - 3600 to 3700
Wireless broadband services - 3650 to 3700
✔✔What does a PAL cover? - ✔✔a PAL covers a single county with CBRS transmitting
devices in it, over a 10 MHz channel.
✔✔What information does the SAS gather from individual devices? - ✔✔Location and
Transmitting Information
✔✔CBSD - ✔✔CBRS Device
✔✔How does the SAS make sure each device is transmitting without interference? -
✔✔Each CBSD has to contact the SAS in order to obtain permission to transmit. The
SAS uses the information that it gathers from all CBSD's to determine if transmitting will
cause any harmful interference to higher priority users, and grants permission to
transmit once it is sure that no harm will come.
✔✔DP - ✔✔Domain Proxy
✔✔What is a domain proxy? - ✔✔A domain proxy can be used between CBSDs and the
SAS in order to aggregate multiple CBSD messages or form a bridge between the SAS
and devices that normally would not be able to communicate with the SAS.
, ✔✔EUD - ✔✔End User Device
✔✔Is the SAS a single device? - ✔✔The SAS is a paid cloud service that is provided by
multiple different providers known as SAS Administrators
✔✔ESC - ✔✔Environmental Sensing Capability
✔✔How does the military take priority of bandwidth and notify the SAS? - ✔✔ESC
devices along the coastline notify the SAS when the military is using the spectrum and
the SAS adjusts transmitting information on other devices to account for the military
use.
✔✔What tier are ESC devices considered? - ✔✔ESCs are considered to be tier 1
devices along with the rest of the military transmitting devices.
✔✔TPA - ✔✔Training Program Administrator
✔✔What happens if someone reports that you (the CPI) have made an error in
reporting information to the SAS? - ✔✔Your TPA is obligated to launch an investigation
on the report and can revoke your certification if they feel it is necessary.
✔✔What should you do if you feel that your certification is at danger unjustly? - ✔✔You
can submit an appeal to WinnForum, who has the overall decision of whether your
appeal is just or not.
✔✔WinnForum - ✔✔The industry group in charge of setting standards and protocols for
using the CBRS band.
✔✔Who defines what happens in CBRS? - ✔✔the FCC, WinnForum and CBRS-A
✔✔CBRS-A - ✔✔CBRS Alliance. industry led group supporting LTE interests in CBRS
and leading the OnGo certification program.
✔✔Where are the general rules for CBRS defined? - ✔✔FCC Rules - Part 96
✔✔How does the SAS communicate with CBSDs? - ✔✔The CBSD sends a request to
the SAS and the SAS responds with a response code.
✔✔What is a registration request? - ✔✔This is the message sent from a CBSD to the
SAS in order to obtain registration in CBRS.
✔✔What is included in the registration request? - ✔✔Installation and transmitting
parameters for the CBSD.
SURE A+
✔✔What is the main responsibility of the CPI? - ✔✔To make sure that all CBRS
transmitting equipment is correctly registered with the SAS and that all information
being sent to the SAS is accurate.
✔✔What are the 4 main incumbents and what frequency do they operate at? -
✔✔Military ship-borne radar - 3550 to 3650
Military ground based radar - 3550 to 3700
Fixed satellite service earth stations - 3600 to 3700
Wireless broadband services - 3650 to 3700
✔✔What does a PAL cover? - ✔✔a PAL covers a single county with CBRS transmitting
devices in it, over a 10 MHz channel.
✔✔What information does the SAS gather from individual devices? - ✔✔Location and
Transmitting Information
✔✔CBSD - ✔✔CBRS Device
✔✔How does the SAS make sure each device is transmitting without interference? -
✔✔Each CBSD has to contact the SAS in order to obtain permission to transmit. The
SAS uses the information that it gathers from all CBSD's to determine if transmitting will
cause any harmful interference to higher priority users, and grants permission to
transmit once it is sure that no harm will come.
✔✔DP - ✔✔Domain Proxy
✔✔What is a domain proxy? - ✔✔A domain proxy can be used between CBSDs and the
SAS in order to aggregate multiple CBSD messages or form a bridge between the SAS
and devices that normally would not be able to communicate with the SAS.
, ✔✔EUD - ✔✔End User Device
✔✔Is the SAS a single device? - ✔✔The SAS is a paid cloud service that is provided by
multiple different providers known as SAS Administrators
✔✔ESC - ✔✔Environmental Sensing Capability
✔✔How does the military take priority of bandwidth and notify the SAS? - ✔✔ESC
devices along the coastline notify the SAS when the military is using the spectrum and
the SAS adjusts transmitting information on other devices to account for the military
use.
✔✔What tier are ESC devices considered? - ✔✔ESCs are considered to be tier 1
devices along with the rest of the military transmitting devices.
✔✔TPA - ✔✔Training Program Administrator
✔✔What happens if someone reports that you (the CPI) have made an error in
reporting information to the SAS? - ✔✔Your TPA is obligated to launch an investigation
on the report and can revoke your certification if they feel it is necessary.
✔✔What should you do if you feel that your certification is at danger unjustly? - ✔✔You
can submit an appeal to WinnForum, who has the overall decision of whether your
appeal is just or not.
✔✔WinnForum - ✔✔The industry group in charge of setting standards and protocols for
using the CBRS band.
✔✔Who defines what happens in CBRS? - ✔✔the FCC, WinnForum and CBRS-A
✔✔CBRS-A - ✔✔CBRS Alliance. industry led group supporting LTE interests in CBRS
and leading the OnGo certification program.
✔✔Where are the general rules for CBRS defined? - ✔✔FCC Rules - Part 96
✔✔How does the SAS communicate with CBSDs? - ✔✔The CBSD sends a request to
the SAS and the SAS responds with a response code.
✔✔What is a registration request? - ✔✔This is the message sent from a CBSD to the
SAS in order to obtain registration in CBRS.
✔✔What is included in the registration request? - ✔✔Installation and transmitting
parameters for the CBSD.
