Multiband wireless data transmission between aircraft and ground systems

Patent metadata

Field	Value
Publication number	US-9667338-B2
Application number	US-201414516668-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Oct 17, 2014
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

Provided are methods and systems for multiband wireless data transmission between aircraft and ground systems. The transmission uses different wavelength ranges, each wavelength range corresponding to a different data domain and establishing a different communication channel. This wavelength differentiation provides physical separation between different data domains and, as a result, improves data security. Furthermore, a single broadband antenna is used on the exterior of the aircraft for transmitting data sets from different data domains. The single antenna configuration reduces drag and weight and improves structural integrity of the aircraft in comparison to multi-antenna configurations. Different aircraft communication modules, which are connected to different aircraft systems, handle different data domains and operate at different wavelength ranges. These modules are connected to the same antenna using a multiplexer. This connection may be controlled using gate devices and may be conditioned on verification of communication channel availability, security status, and other factors.

First claim

What is claimed is:

1. A method for multiband wireless data transmission between an aircraft and one or more ground systems, the method comprising:
receiving a first data set at a first aircraft communication module;
generating a first radio frequency (RF) signal based on the first data set,
wherein the first RF signal is generated using the first aircraft communication module, and

sending the first RF signal to a multiplexer connected to an aircraft broadband antenna positioned on an exterior of the aircraft;
transmitting the first RF signal using the aircraft broadband antenna to a first ground system;
receiving a second data set at a second aircraft communication module;
generating a second RF signal based on the second data set,
wherein the second RF signal is generated using a second aircraft communication module,

sending the second RF signal to the multiplexer; and
transmitting the second RF signal using the aircraft broadband antenna to a second ground system,
wherein a wavelength range of the first RF signal is different from a wavelength range of the second RF signal.

2. The method of claim 1 , wherein the wavelength range of the first RF signal does not overlap with the wavelength range of the second RF signal.

3. The method of claim 1 , wherein transmitting the first RF signal at least partially overlaps in time with transmitting the second RF signal.

4. The method of claim 1 , further comprising, prior to transmitting the first RF signal, checking a first RF energy at the aircraft broadband antenna, wherein the first RF energy corresponds to the wavelength range of the first RF signal and is generated using a first ground antenna of the first ground system.

5. The method of claim 4 , wherein transmitting the first RF signal is conditioned on the first RF energy being within a first range.

6. The method of claim 4 , wherein the first aircraft communication module is connected to the multiplexer using a gate device operable to connect the first aircraft communication module to the multiplexer or to disconnect the first aircraft communication module from the multiplexer depending on the first RF energy.

7. The method of claim 1 , wherein an antenna of the first ground system is different from an antenna of the second ground system.

8. The method of claim 1 , wherein an antenna of the first ground system is a WiFi antenna, and wherein an antenna of the second ground system is a WiMAX antenna, a cellular antenna, or a SatCom.

9. The method of claim 1 , wherein an antenna of the first ground system is a WiMAX antenna, and wherein an antenna of the second ground system is a SatCom.

10. The method of claim 1 , wherein the first ground system and the second ground system share an antenna.

11. The method of claim 1 , wherein the aircraft broadband antenna is configured to transmit with a wavelength range of between about 700 MHz and 6 GHz.

12. The method of claim 1 , wherein the first data set is received from a first aircraft system, wherein the second data set is received from the second aircraft system, and wherein the first aircraft system and the second aircraft system are communicatively separated.

13. The method of claim 1 , wherein the first aircraft system and the second aircraft system are physically separated.

14. The method of claim 1 , wherein the first aircraft system is an aircraft control system, and wherein the second aircraft system is one of an airline information services system or a passenger information and entertainment services system.

15. The method of claim 1 , wherein the first aircraft communication module is not operable within the wavelength range of the second RF signal, and wherein the second aircraft communication module is not operable within the wavelength range of the first RF signal.

16. A system for multiband wireless data transmission between an aircraft and one or more ground systems, the system comprising:
a first aircraft communication module configured to operate within a first wavelength operating range;
a second aircraft communication module configured to operate within a second wavelength operating range,
wherein the second wavelength operating range does not overlap with the first wavelength operating range;

a multiplexer connected to the first aircraft communication module and to the second aircraft communication module,
wherein the multiplexer is configured to combine RF signals from the first aircraft communication module in the first wavelength operating range and from the second aircraft communication module in the second wavelength operating range; and

a broadband antenna positioned on exterior of the aircraft,
wherein the broadband antenna is connected to the multiplexer and configured to transmit the RF signals in the first wavelength operating range and the second wavelength operating range.

17. The system of claim 16 , wherein further comprising a first gate device and a second gate device, wherein the first gate device controls RF signal transfer between the multiplexer and the first aircraft communication module, and wherein the second gate device controls RF signal transfer between the multiplexer and the second aircraft communication module.

18. The system of claim 17 , wherein the second gate device is controlled by the RF signal with the second wavelength operating range.

19. The system of claim 16 , wherein the first aircraft communication module is connected to a first aircraft system, wherein the second aircraft communication module is connected to a second aircraft system, and wherein the first aircraft system and the second aircraft system are communicatively separated.

20. The system of claim 16 , wherein the system is a part of the aircraft, wherein the aircraft further comprises an aircraft control system, an airline information services system, and a passenger information and entertainment services system, wherein at least one of the aircraft control system, the airline information services system, and the passenger information and entertainment services system is communicatively coupled to the first aircraft communication module, and wherein a different one of the aircraft control system, the airline information services system, and the passenger information and entertainment services system is communicatively coupled to the second aircraft communication module.

Assignees

• Boeing Co

Inventors

• Shelton Jason W
• Mitchell Timothy M
• Nguyen Daniel

Classifications

• H01Q5/00

  Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements (combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30) · CPC title

• H01Q1/286

  substantially flush mounted with the skin of the craft · CPC title

• H04B7/18506 Primary

  Communications with or from aircraft, i.e. aeronautical mobile service · CPC title