1. RFeye Distributed Spectrum Intelligence Networks
Key
RFeye node operating with or without an internet
connection:
- Mobile
- Fixed
Legal
Transmitter Any type of RF transmitter:
- Legal (e.g. GSM)
- Illegal (e.g. GPS jammer)
- Whitespace (Requires channel etiquette/permission)
Whitespace CRFS Servers:
Transmitter - Long term fixed data storage
- Long term mobile data storage
Illegal - Spectrum License information updates with nodes
- Customer spectrum analysis and management
Transmitter
- Transmitter Active Geo location services
IP connection over cellular network
IP connection over wired network
Technology - RFeye NCP Protocol over IP Networks
Nodes sharing spectrum
RFeye uses a powerful multi user node control protocol (NCP) intelligence
that runs on the nodes internal Linux operating system.
This protocol allows multiple users to run multiple tasks on
each of the RFeye nodes in the distributed network. The RFeye
nodes can also run tasks on and from each other creating a
truly scalable and intelligent RF spectrum intelligence system.
NCP is designed to be secure, fast and efficient at transporting
commands and data across the most challenging of network
deployments that may have high latency and low overall
bandwidth.
Multiple users running multiple
tasks on the same or multiple
Nodes.

2. Usage Scenario 1 – Distributed Real Time Spectrum Manager
cb259tl.rfeye.com Transmitter A
Transmitter A requests occupancy data directly from the node in the area by
simply knowing the postcode and creating the URL. This data can be over any
frequency band and occupancy time period:
cb287zh.rfeye.com
cb259tl.rfeye.com:9998/log/scans/470_860/opns/occ_15_min_-90dBm/data?parse=1&json=1
Local DB update
The RFeye nodes are directly addressable via DNS using names – [postcode].rfeye.com Data
Request
The data returned is a JSON packet that the transmitter can process and (based on
the band etiquette) decide whether to transmit or not on the given frequency.
All band etiquette and frequency regulations loaded and updated directly or via CRFS servers.
Usage Scenario 2 – Distributed Real Time Spectrum Broker
Winning bid license
Transmitter A and B use the RFeye node to broker for spectrum usage with a
Transmitter A
regular automated auction to see who is willing to use the frequency band. Highest cb259tl.rfeye.com
bid has the license for a given time period or whatever metrics the band dictates.
cb259tl.rfeye.com:9998/bid/470_860/bid_56_00
Transmitter B
The license key data is then returned to the transmitter that won the auction and Bid
used as per the end use license agreement.
The RFeye network can geo locate illegal transmitter use if the license system is Bid
being abused.
.

3. Usage Scenario 3 – Geo-Location of Transmitters
A number of geo location techniques (AOA, POS and TDOA)
are used in the RFeye network to geo-locate any RF transmissions.
Any PC or device can access the RFeye nodes to run geo location
services directly or via the CRFS servers web portal.
RFeye Site geo location output
Usage Scenario 4 – Spectrum Database Portal
The CRFS servers collect data from the RFeye nodes on a regular schedule and store the data
in a database using the same type of data requests as in previous scenarios
cb259tl.rfeye.com:9998/log/scans/470_860/opns/occ_15_min_-90dBm/data?parse=1&json=1
This data is stored and can be accessed via the RFeye server web portal. See below:
Data
Transfers

4. Usage Scenario 5 – “live access” while all scenarios run simultaneously
The NCP server running on each RFeye node allows multiple users to run multiple task and mission scenarios on the
network. It also allows the nodes to share information using the same protocols as user applications between each
other.
The use of NCP results in a truly scalable distributed network solution that can run multiple missions and services that
are relevant to individual stakeholders that have access to CRFS RFeye networks. This allows users to run many
usage scenarios overlaid over the same network simultaneously thus maximising network capacity.
Illegal
Multiple nodes
transmitter
AOA direction
geo-location
finding arrays
Nodes sharing
spectrum
intelligence
Multiple users running
multiple tasks on the
same or multiple
nodes.
Mobile user accessing
mobile RFeye node data.
Mobile user
accessing
database. Whitespace
transmitters
bidding for
license