CONTENTS

Policy on Intellectual Property Right (IPR)
�1���� Introduction
�2���� Discussion
������� 2.1���� Substitution of wiring
������� 2.2���� Enhanced reliability
������� 2.3���� Additional functions
�3���� Wireless Avionics Intra-Communications application characteristics
������� 3.1���� Categorization process description
����������������� 3.1.1���� System data rate categorization
����������������� 3.1.2���� System location
����������������� 3.1.3���� Category definition
������� 3.2���� Detailed description of applications by category
����������������� 3.2.1���� Category low data rate inside
����������������� 3.2.2���� Category low data rate outside
����������������� 3.2.3���� Category High data rate Inside
����������������� 3.2.4���� Category High data rate Outside
�4���� Wireless Avionics Intra-Communications system characteristics
������� 4.1���� Reference aircraft
������� 4.2���� Reference Wireless Avionics Intra-Communications (WAIC) system architecture
����������������� 4.2.1���� Network components
����������������� 4.2.2���� Generic network architecture for internal Wireless Avionics Intra-Communications applications (low and high data rate inside)
����������������� 4.2.3���� Generic network architecture for external Wireless Avionics Intra-Communications applications (low and high data rate outside)
������� 4.3���� Aircraft shielding characteristics
����������������� 4.3.1���� Wireless Avionics Intra-Communications systems inside the aircraft structure
������� 4.4���� Wireless Avionics Intra-Communications radio interface characteristics
������� 4.5���� Overall effective radiated power per aircraft and Wireless Avionics Intra‑Communications application category
�5���� Spectrum requirements for Wireless Avionics Intra-Communications
������� 5.1���� Net average application data rate (P_eff)
������� 5.2���� Protocol overhead factor (a)
������� 5.3���� Channelization overhead factor (b)
������� 5.4���� Multiple aircraft factor
������� 5.5���� Modulation efficiency
������� 5.6���� Calculation of Wireless Avionics Intra-Communications spectrum requirements
�6���� Summary
Annex 1� Protocol considerations
����� A-1.1���� Introduction
����� A-1.2���� Overhead in IEEE 802.15.4 and 802.11a/g packed-oriented communications systems
����� A-1.3���� Security-related overhead
����� A-1.4���� Error correction overhead
����� A-1.5���� Calculation of protocol overhead factor a
����� A-1.6���� Channelization overhead factor b
����� A-1.7���� Modulation efficiency η
Annex 2� Multiple aircraft considerations
����� A-2.1���� Aircraft-to-aircraft interference model
����� A-2.2���� Aircraft model
����� A-2.3���� Distribution of Wireless Avionics Intra-Communications nodes outside the aircraft structure
����� A-2.4���� Interference ranges
����� A-2.5���� Aircraft configuration
����� A-2.6���� Estimated number of interfering aircraft
����� A-2.7���� Multiplicative factor for spectrum requirements
����� A-2.8���� Conclusion on multiple aircraft overhead
Annex 3� Propagation considerations
����� A-3.1���� Introduction
����� A-3.2���� Definition of channel gain/loss models for various areas of the aircraft
����� A-3.3���� General channel model
����� A-3.4���� Modelling large-scale channel characteristics
����� A-3.5���� Large-scale prediction error or modelling shadowing
����� A-3.6���� Modelling small-scale fading statistics
����� A-3.7���� Modelling aircraft fuselage attenuation in closed form
Annex 4� Overall emissions of an aircraft caused by Wireless Avionics Intra-Communications systems
����� A-4.1���� Introduction
����� A-4.2���� Per-compartment emissions for low data rate inside Wireless Avionics Intra-Communications systems
����� A-4.3���� Per-area emissions for low data rate outside Wireless Avionics Intra-Communications systems
����� A-4.4���� Per-compartment emissions for high data rate inside Wireless Avionics Intra-Communications systems
����� A-4.5���� Per-area emissions for high data rate outside Wireless Avionics Intra-Communications systems
Annex 5� List of acronyms