Update on Wireless

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18 Νοε 2013 (πριν από 4 χρόνια και 6 μήνες)

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Update on Wireless
Avionics Intra
-
Communications
(WAIC)


ITU
-
R Update

and Future Regulatory

Considerations

ICAO WG
-
F Meeting


Paris, France

March 2011

Mr. Joseph Cramer

Agenda


AVSI and WAIC


Importance of WAIC


WRC
-
12 Agenda Item Potentially Impacting
WAIC


AI 1.12


ITU
-
R Update


Future WRC Agenda Item Proposals


Agenda Item 8.2


ICAO and Future Course of Action


ICAO and CEPT Support

AVSI and WAIC


What is the Aerospace Vehicle Systems Institute (AVSI)


Aerospace Vehicle System Institute
-

A cooperative of companies, academia
and government agencies.


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)


ITU
-
R Report M.2197


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.


Not for passengers or in
-
flight
entertainment

Importance of WAIC to Aviation Industry


Environmental Benefits


Goal is to reduce wiring and associated aircraft weight,
enabling less fuel burn.


Increased Reliability


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


Mesh networks could provide redundancy in emergencies.


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


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

WAIC Technical Characteristics


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


WAIC will utilize low transmission power (< 10 mW)


Most
applications are internal
-

within fuselage/cabin


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


Communication in WAIC systems takes place between
aircraft stations (although both on same aircraft)


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

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

WRC
-
12 Agenda Item Potentially
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.


Given protection criteria for SRS systems, unlikely WAIC can
use the band unless protection criteria are realistic.


ICAO Position


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

38 GHz. To support the body