Impacting Wireless Avionics

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Nov 18, 2013 (3 years and 8 months ago)

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Aerospace Vehicle Systems Institute


Update on WRC
-
12 Issues
Impacting Wireless Avionics
Intra
-
Communications (WAIC)


ITU
-
R Working Party 5B

and Future Regulatory

Considerations


Joe Cramer

September 2010

Aerospace Vehicle Systems Institute

Agenda


AVSI and WAIC


Importance of WAIC


WRC
-
12 Agenda Items Impacting WAIC


AI 1.11


AI 1.12


ITU
-
R Working Party 5B Update


Issues Discussed and Documents


Potential Future WRC Agenda Item


ICAO and Future Course of Action


ICAO and ITU
-
R Support

Aerospace Vehicle Systems Institute


What is the Aerospace Vehicle Systems Institute (AVSI)


Aerospace Vehicle System Institute

-

A cooperative of companies, academia and
government agencies. Members include Airbus, BAE Systems, Boeing,
Bombardier, Embraer, Goodrich, Gulfstream, GE Aviation, Honeywell, NASA,
United Technologies.


Focus on developing improved aerospace vehicles.


Creates an environment for collaboration on research and development projects;
investigates emerging technologies; and influences standards and policies to
promote cost effective systems development and certification.


What is Wireless Avionics Intra Communications (WAIC)


Radiocommunication between two or more points on a
single

aircraft.


Includes integrated wireless components and/or installed components.


Part of a closed, exclusive network required for operation of the aircraft.


Does not provide air
-
to
-
ground, air to satellite, or air
-
to
-
air communications.


Only safety related applications are being contemplated.


AVSI and WAIC

Aerospace Vehicle Systems Institute

WAIC Technical Characteristics


WAIC is based on short range radio technology (< 100m)


WAIC operates with low transmission power (< 10 mW)


Main application area is internal, within fuselage/cabin


External transmission via directive antennas (e.g. landing gear,
wings)


WAIC is to be classified as AM(R)S because: (cf. RR Article 1.33)


communication in WAIC systems takes place between aircraft stations


communication in WAIC systems is related to safety and regularity of flight


WAIC systems will be installed primarily onboard civil aircraft operated
along national or international civil air routes


Aerospace Vehicle Systems Institute


Environmental Benefits


Less wiring will reduce aircraft weight, enabling less fuel burn.



Increased Reliability


Fewer connector pins/failures, cracked insulation, & broken conductors


Mesh networks could provide redundancy



Safety Improvements
:


Wireless links can provide redundancy


Reduce amount of aging wiring and associated malfunction issues


fewer connector pins/failures, lower risk of cracked insulation & broken
conductors


Importance of WAIC to Aviation Industry

Aerospace Vehicle Systems Institute


Operational Efficiency Improvements


Ability to obtain more data from aircraft surfaces


Easier and more reliable access to maintenance data, particularly for
rotating and moving parts (e.g. wheel wells, actuators, etc.)


Less wire maintenance to remediate chafing conditions


Simplify and reduce life
-
cycle cost of airplane wiring


Reduced weight should save fuel costs



Importance of WAIC to the Aviation Industry

Aerospace Vehicle Systems Institute

Communications between Aircraft and Ground

Satellite

Communication

Communications
between aircraft

Airport

Satellite

PAX Connectivity

September 2010

Wireless Avionics Intra
-
Communications (WAIC)

Machine

-
to
-

Machine

Cabin Crew

Flight Deck Crew

Mobile Phone

Live
-
IP

Radio, TV,
IFE

Scope of WAIC

Cabin crew
voice/data

Flight deck crew
voice/data

Video
surveillance

Cabin Control

Sensors

Structural sensors

Cargo data

Aerospace Vehicle Systems Institute

Examples of Potential WAIC Applications

Low Data Rate, Interior Applications:


Sensors:

Cabin Pressure
-

Smoke Detection
-

Fuel Tank/Line
-

Proximity
-





Temperature
-

EMI Incident Detection
-

Structural Health Monitoring
-




Humidity/Corrosion Detection


Controls:

Emergency Lighting
-

Cabin Functions

Low Data Rate, Outside Applications:


Sensors:

Ice Detection
-

Landing Gear Position Feedback
-

Brake Temperature
-



Tire Pressure
-

Wheel Speed
-

Steering Feedback
-



Flight Controls Position Feedback
-

Door Proximity
-

Engine Sensors
-



Cargo Compartment
-

Structural Sensors

High Data Rate, Interior Applications:


Sensors:

Air Data
-

Engine Prognostic
-



Flight Deck/Cabin Crew Still Imagery / Video



Comm.:

Avionics Communications Bus
-

FADEC Aircraft Interface
-



Flight Deck/Cabin Crew Audio / Video (safety
-
related)
-



Flight
-
Operations related Digital Data (e.g. EFOS…)

High Data Rate, Outside Applications:


Sensors:

Structural Health Monitoring
-

Imaging Sensors (Still and Video)


Controls:

Active Vibration Control


Comm.:

Avionics Communications Bus

Aerospace Vehicle Systems Institute

WRC
-
12 Agenda Items Impacting WAIC


Agenda Item 1.12


Seeks to determine if the aeronautical mobile service should not be
permitted in the 37
-
38 GHz band


No current aviation systems in this band.


Until 2008, no aviation systems were considered in this band.


However, WAIC might be able to use this band


ICAO Position


To oppose excluding aeronautical use of the existing mobile service
allocation in the band 37
-

38 GHz. To support the use of technical
protection limits to ensure that any future AMS system in the band 37
-

38 GHz will be compatible with other co
-
primary services.



Aerospace Vehicle Systems Institute

WRC
-
12 Agenda Items Impacting WAIC


Agenda Item 1.12


CITEL Draft Position


Consistent with ICAO Position


CEPT Position


Eliminate Aeronautical Mobile Service


APT Position


S
upport the sharing studies


ASMG Position


Support sharing studies & eliminate AMS if
studies show sharing is not possible


ATU Position


TBD


Aerospace Industry wants to protect Space Research Service


Not likely that Fixed applications will intersect with aircraft.


WP 5B provided preliminary technical information to WP 7B and
to 5C (responsible groups)


WP 5B asked 7B if any WAIC classifications are acceptable.


No response

Aerospace Vehicle Systems Institute

WRC
-
12 Agenda Items Impacting WAIC


Agenda Item 1.11


Seeks to permit the Space Research Service in the 22.55
-
23.15 GHz
band.


Liaison statement to WP 7B sent that states WAIC will not
consider this band.

Aerospace Vehicle Systems Institute

ITU
-
R Working Party 5B
-

Update

WP5B is lead ITU
-
R Group

WAIC Draft New Report


Inputs from CEPT, US, Brazil and Canada


Technical Characteristics and Operational Objectives of WAIC Systems


Sent to Study Group 5 for approval at November Meeting

Aerospace Vehicle Systems Institute

ICAO and Future Course of Action


Likely Future WRC Agenda Item for WAIC


Draft Proposals being circulated in US, Brazil, Germany
(possibly CEPT or multi
-
country), and possibly Canada.


World
-
wide allocation(s) must be obtained


Spectrum usage must fall within ICAO Convention in order to
obtain benefits for equipment certification.


No bands being proposed in Drafts


Aerospace Vehicle Systems Institute

ICAO and ITU
-
R Regional Support


If an Agenda Item is approved, then support from ASMG, ATU
and ICAO is required


Because WAIC will provide safety benefits, how should it be
incorporated into the ITU
-
R Regulations?


AM(R)S?


Mobile Service with Footnote providing priority?


Other?


The Service Definition chosen for WAIC requires support


Need to consider how to meet ITU and ICAO requirements:


Obtaining AM(R)S spectrum will be extremely difficult given the fact
WAIC will have to share band with incumbent service.


Aerospace Vehicle Systems Institute

Classic AM(R)S/AMS(R)S

Ground Station


Aeronautical Mobile (Route) Service (AMS)
-

example:


HF Voice


(2
-

30 MHz)


VHF Voice


(117.975
-
137 MHz)


Satellite


Aeronautical Mobile Satellite Service

Aerospace Vehicle Systems Institute

ICAO and ITU
-
R Regional Support


WAIC could be classified as AM(R)S
-

it complies with RR Article 1.33


1.83
aircraft station:
A mobile station in the aeronautical mobile service,
other
than a
survival craft station, located on board an aircraft.


A WAIC transmitter can be considered an “aircraft station” because it is
located on an aircraft.


1.32
aeronautical mobile service:
A mobile service between aeronautical
stations
and
aircraft stations, or
between aircraft stations
, …


Communication between WAIC transmitters conforms with the
requirement “between aircraft stations”.


1.33
aeronautical mobile (R)* service:
An aeronautical mobile service
reserved
for
communications relating to safety and regularity of flight
,
primarily along national or international civil air routes.


WAIC applications are defined as limited to safety applications.


WAIC systems will be installed onboard civil aircraft operated along
national or international civil air routes